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Oracle9i Business Components for Java API Reference
Oracle9i Jdeveloper (9.0.4)
B10391-01

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oracle.jbo.server
Class ViewRowSetImpl

java.lang.Object
  |
  +--oracle.jbo.common.PropertiesHelper
        |
        +--oracle.jbo.common.RowSetHelper
              |
              +--oracle.jbo.server.RowSetImpl
                    |
                    +--oracle.jbo.server.ViewRowSetImpl

All Implemented Interfaces:: NavigatableRowIterator, Properties, RowIterator, RowSet, RowSetIterator, WSDetailQuery, XMLInterface

Direct Known Subclasses:: EntityRowSetImpl

public class ViewRowSetImpl
extends oracle.jbo.server.RowSetImpl
implements RowSet, WSDetailQuery

The middle-tier class that manages collections of view rows that result from executing a query.

A view row set blongs to a View Object. An important distinction between a View Object and a row set is that the View Object manages the query statement. All row sets that belong to a View Object use the same query statement. However, each row set supplies its own set of binding values. This arrangement is ideally for managing the master-detail relationship: the detail View Object supplies the same query statement for all detail row sets, while each row set builds its own bind values from its master row.

View rows are maintained in an ordered list, and each view row is identified by an index into this list. This index is referred as the absolute row index. An application can insert a row at any valid row index, or delete any row, which will cause the indices of following rows to be adjusted.

The work horse behind ViewRowSetImpl are internal query collections. In a master-detail relationship the detail set is identified by its foreign key value. For example, consider the View Objects Dept and TempAgency, where Dept is the master and TempAgency is the detail, which are related through a View Link <emLocation. Suppose Depts 10 and 20 are located in "New York" and Dept 30 in "San Jose", and "New York" has two temp agencies "ABC and DEF", and "San Jose" has "GHI and JKL".

This scenario has two query collections on the detail (TempAgency) side, for "New York" and "San Jose". If the application invokes the assocation/View Link accessor to get the temp agencies from Dept, each Dept produces a view row set. Two view row sets, for Depts 10 and 20 show temp agencies in "New York", and Dept 30 shows the temp agencies in "San Jose". The first two view row sets share the same query collection, and the third has its own.

An internal table of master-key/query-collection pairs, the query collection hash table, is maintained for the View Object. When a new detail view row set is created, it checks this hash table to see if a query collection of the master key value already is in the list, and if found, uses it. Otherwise, the query is executed and a new query collection is created.

The position of a row inserted in the middle of the row set is temporary in that when the data is posted to the database, this position will not be preserved in the database. If the row set is executed again, refreshing its data from the database, the new row will appear in the position returned by the database.

Since:: JDeveloper 3.0
See Also:: ViewObject, RowSet, ViewObjectImpl, ViewRowSetIteratorImpl

Field Summary
`protected ViewRowSetIteratorImpl`	`mDefaultView`
`static byte`	`mDefaultViewLinkMode`
`protected com.sun.java.util.collections.ArrayList`	`mMasterViews`
`protected java.lang.Object[]`	`mParamValues`
`protected ViewObjectImpl`	`mQRef`
`protected com.sun.java.util.collections.ArrayList`	`mUserParams`
`protected com.sun.java.util.collections.ArrayList`	`mViews`
`static byte`	`VIEWLINK_MODE_CONSISTENT`
`static byte`	`VIEWLINK_MODE_DEFAULT`
`static byte`	`VIEWLINK_MODE_INCONSISTENT`
`static byte`	`VIEWLINK_MODE_UNINITIALIZED`

Fields inherited from class oracle.jbo.common.RowSetHelper

listeners, mMgmtListeners, mName

Fields inherited from class oracle.jbo.common.PropertiesHelper

mProperties

Fields inherited from interface oracle.jbo.RowSet

FORWARD_ONLY, RANGE_PAGING, RANGE_PAGING_AUTO_POST, SCROLLABLE

Fields inherited from interface oracle.jbo.RowIterator

ITER_MODE_LAST_PAGE_FULL, ITER_MODE_LAST_PAGE_PARTIAL, SLOT_BEFORE_FIRST, SLOT_BEYOND_LAST, SLOT_DELETED, SLOT_VALID

Fields inherited from interface oracle.jbo.XMLInterface

XML_IGNORE_DEPTH_COUNT, XML_OPT_ALL_ROWS, XML_OPT_ASSOC_CONSISTENT, XML_OPT_CHANGES_ONLY, XML_OPT_LIMIT_RANGE

Constructor Summary
`ViewRowSetImpl(ViewObjectImpl vo, java.lang.String name, ViewRowSetIteratorImpl masterRSI)` Constructs a new secondary (non-default) view row set.

Method Summary
`void`	`addListener(java.lang.Object listener)` Adds an event listener to this object.
`void`	`addManagementListener(RowSetManagementListener listener)` Adds a subscriber (listener) to be notified of `RowSetManagementListener` events generated by this Row Set Iterator.
`protected void`	`close()` Closes the view row set.
`void`	`closeRowSet()` Closes the row set.
`void`	`closeRowSetIterator()` Closes this row set iterator.
`Row`	`createAndInitRow(AttributeList initVals)`
`RowSet`	`createDetailRowSet(java.lang.String rsName, java.lang.String linkDefName)` Creates and returns an new detail row set for this row set iterator.
`Key`	`createKey(AttributeList nvp)` Given a list of name-value pairs, creates a Key object that matches the key structure for the ViewObject for this RowItertor.
`Row`	`createRow()` Creates a new view row.
`RowSetIterator`	`createRowSetIterator(java.lang.String name)` Creates and returns a new row set iterator on this row set.
`static void`	`dumpViewRowCache(RowSetIterator rsi, java.io.Writer out)` Internal: Applications should not use this method.
`java.util.Enumeration`	`enumerateRowsInRange()` Creates and returns an enumerator of the rows in the range.
`void`	`execute(boolean forceFlag, boolean notifyFlag)` Executes the query.
`void`	`execute(boolean forceFlag, boolean notifyFlag, Row[] masterRows)`
`void`	`executeDetailQuery(Row[] masterRows)`
`void`	`executeQuery()` Executes the query.
`Row[]`	`findByEntity(int eRowHandle, int maxNumOfRows)` Finds and returns View rows that use the Entity row, identified by the Entity row handle, `eRowHandle`.
`Row[]`	`findByKey(Key key, int maxNumOfRows)` Finds and returns View rows that match the specified key.
`RowSetIterator`	`findRowSetIterator(java.lang.String rsiName)` Gets the named Row Set Iterator that was created at runtime for this Row Set.
`Row`	`first()` Navigates to the first row in the row set.
`byte`	`getAccessMode()`
`Row[]`	`getAllRowsInRange()` Returns an array of all rows in the iterator's range.
`ApplicationModule`	`getApplicationModule()` Returns the application module to which this row set's View Object belongs.
`int[]`	`getCollMgmtInfo()`
`Row`	`getCurrentRow()` Returns the current row of the iterator.
`int`	`getCurrentRowIndex()` Returns the absolute row index of the current row in the row set.
`int`	`getCurrentRowSlot()` Returns the current row slot status.
`ViewRowSetIteratorImpl`	`getDefaultRowSetIterator()` Returns the default `ViewRowSetIteratorImpl`.
`RowSet[]`	`getDetailRowSets()` Returns an array of all detail row sets for this row set iterator.
`int`	`getEstimatedRangePageCount()` Returns getEstimatedRowCount()/rangePageSize, if rangeSize > 0.
`long`	`getEstimatedRowCount()` Returns an estimated number of rows in this row set.
`int`	`getFetchedRowCount()` Returns the number of rows fetched from the JDBC `RestultSet`.
`int`	`getIterMode()` Gets the current iteration mode.
`RowSetIterator[]`	`getMasterRowSetIterators()` Returns an array of all master row set iterators for this row set.
`java.util.Vector`	`getMasterViewRowSetIterators()` Returns a list of all master row set iterators for this row set.
`com.sun.java.util.collections.ArrayList`	`getMasterViewRowSetIteratorsList()` Returns a list of all master row set iterators for this row set.
`Row[]`	`getNextRangeSet()` Gets the next set of rows in the range.
`java.lang.Object[]`	`getParameters(boolean nullValueFlag)` Returns an array of bind values to be used for binding to the query.
`java.lang.Object[]`	`getParameters(boolean nullValueFlag, Row[] masterRows)`
`java.lang.Object[]`	`getParametersAsStorageTypes()` Returns an array of bind values to be used for binding to the query.
`java.lang.Object[]`	`getParametersAsStorageTypes(Row[] masterRows)`
`Row[]`	`getPreviousRangeSet()` Gets the previous set of rows in the range.
`java.util.Hashtable`	`getProperties()` Retrieves all properties.
`QueryCollection`	`getQueryCollection()` Internal: Applications should not use this method.
`int`	`getRangeIndexOf(Row row)` Returns the range index of the row specified by `row`.
`int`	`getRangeSize()` Returns the range size of the iterator.
`int`	`getRangeStart()` Returns the absolute row index of the first row in the range.
`Row`	`getRow(int index)` Returns the row at absolute row index of `index`.
`Row`	`getRow(Key key)` Returns the first row whose key matches `key`.
`Row`	`getRowAtRangeIndex(int index)` Returns the row at range index `index`.
`int`	`getRowCount()` Returns the total number of rows in this row set.
`int`	`getRowCountInRange()` Returns the actual number of rows in the range.
`Row`	`getRowFromHandle(java.lang.Object rowHandle)` Internal: Applications should not use this method.
`protected Row[]`	`getRows(EntityImpl entity)` Returns an array of view rows that use the specified entity row.
`RowSet`	`getRowSet()` Implements `RowSetIterator.getRowSet`.
`RowSetIterator`	`getRowSetIterator()` Returns the row set iterator interface of this object.
`RowSetIterator[]`	`getRowSetIterators()` Gets all Row Set Iterators that belong to this row set.
`java.lang.Object`	`getSyncLock()` Gets the locking object for this Row Set Iterator.
`byte`	`getViewLinkMode()` Internal: Applications should not use this method.
`ViewObject`	`getViewObject()` Returns this row set's View Object.
`java.lang.Object[]`	`getWhereClauseParams()` Returns an array of bind values currently specified for the query.
`boolean`	`hasDefaultRowSetIterator()`
`boolean`	`hasNext()` Indicates whether the iterator has a next row or not.
`boolean`	`hasPrevious()` Indicates whether the iterator has a previous row or not.
`void`	`insertRow(Row row)` Inserts the row into the row set.
`void`	`insertRowAt(int index, Row row)` Inserts a view row at an absolute row index specified by `index`.
`void`	`insertRowAtRangeIndex(int index, Row row)` Inserts the row into the row set at the specified range index.
`boolean`	`isAssociationConsistent()` Returns the association-consistent flag for this row set.
`boolean`	`isDefaultRS()` Internal: Applications should not use this method.
`boolean`	`isDirty()` Indicates whether data modifications have been performed since the last database post through this row set.
`boolean`	`isExecuted()` Indicates whether the row set has been executed or not.
`boolean`	`isFetchComplete()` Tests if the query result set has been fetched to the end.
`boolean`	`isForwardOnly()` Indicates whether this row set is forward-only or not.
`boolean`	`isMaxFetchSizeExceeded()` Tests if the query result has been fetched to the end and the end was reached due to hitting the maxFetchSize limit
`boolean`	`isNameGenerated()` Tests if the Iterator's name was generated by the system.
`protected boolean`	`isNotifiedRefresh()` Indicates whether row set refresh event has been notified to the row set's listeners or not.
`boolean`	`isPassivationEnabled()` Advanced Internal method only.
`boolean`	`isRangeAtBottom()` Indicates whether the iterator range contains the last row of the row set.
`boolean`	`isRangeAtTop()` Indicates whether the iterator range contains the first row of the row set.
`Row`	`last()` Navigates to the last row in the row set.
`ViewRowImpl`	`makeRowCopy(ViewRowImpl vr)`
`Row`	`next()` Navigates to the next row in the row set.
`Row`	`previous()` Navigates to the previous row in the row set.
`void`	`printActiveObjsTab(java.io.PrintWriter pw)`
`void`	`printColl(java.io.PrintWriter pw, int printFlag)`
`void`	`printRUChain(java.io.PrintWriter pw)`
`void`	`readXML(Element elem, int depthCount)`
`void`	`readXML(Element elem, int depthCount, XSLStylesheet xslt)`
`void`	`removeCurrentRow()` Removes the current row.
`void`	`removeCurrentRowFromCollection()` Removes the current Row object from the collection.
`void`	`removeListener(java.lang.Object listener)` Removes an event listener to this object from the listener list.
`void`	`removeManagementListener(RowSetManagementListener listener)` Removes a subscriber (listener) for `RowSetManagementListener` events generated by this row set iterator.
`boolean`	`removeMasterRowSetIterator(RowSetIterator masterRSI)` Removes the master row set iterator in a master-detail View Link.
`void`	`removeRowAt(int index)` Removes a view row at an absolute row index specified by `index`.
`void`	`removeRowFromCollectionAt(int index)`
`void`	`removeRowHandle(java.lang.Object rowHandle)` Internal: Applications should not use this method.
`void`	`reset()` Resets the iterator.
`int`	`scrollRange(int amount)` Scrolls the range by `amount`.
`int`	`scrollRangeTo(Row row, int index)` Scrolls the range to a specific row.
`int`	`scrollToRangePage(int amount)` Moves the row set range start to the given page index where every page consists of RangeSize number of rows.
`void`	`setAccessMode(byte flag)` Constrains the row access based on the following settings:
`void`	`setAssociationConsistent(boolean isConsistent)` Sets the association-consistent flag for this row set.
`boolean`	`setCurrentRow(Row row)` Moves the iterator to the row specified by `row`.
`boolean`	`setCurrentRowAtRangeIndex(int index)` Moves the iterator to the row whose range index is `index`.
`void`	`setForwardOnly(boolean isForwardOnly)` Sets whether this row set will be forward-only or not.
`void`	`setIterMode(int mode)` Sets the iteration mode for this Row Iterator.
`boolean`	`setMasterRowSetIterator(RowSetIterator masterRSI)` Sets the master row set iterator in a master-detail View Link.
`void`	`setPassivationEnabled(boolean flag)` Advanced Internal method only.
`int`	`setRangeSize(int size)` Sets the range size for the iterator.
`int`	`setRangeStart(int start)` Sets the range position by the absolute row index specified in `start`.
`void`	`setRowValidation(boolean flag)` Sets the validation flag on this iterator.
`void`	`setViewLinkMode(byte val)` Internal: Applications should not use this method.
`void`	`setWhereClauseParam(int index, java.lang.Object value)` Sets the bind value at a specified `index`.
`void`	`setWhereClauseParams(java.lang.Object[] values)` Sets bind values for the query.
`Node`	`writeXML(int depthCount, long options)` Renders data in a canonical XML-format.
`Node`	`writeXML(int depthCount, long options, XSLStylesheet xslt)`
`Node`	`writeXML(long options, com.sun.java.util.collections.HashMap voAttrRules)` Renders data in a canonical XML-format.
`Node`	`writeXML(long options, com.sun.java.util.collections.HashMap map, XSLStylesheet xslt)`

Methods inherited from class oracle.jbo.common.RowSetHelper

fireMgmtIteratorClosed, fireMgmtIteratorReset, fireNavigationEvent, fireRangeRefreshed, fireRangeScrolled, fireRowDeleted, fireRowInserted, fireRowUpdated, getListeners, getListenersList, getManagementListenersList, getName, hasListeners, hasManagementListeners, setName

Methods inherited from class oracle.jbo.common.PropertiesHelper

getProperty, refreshProperty, setProperty

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface oracle.jbo.RowSet

getName

Methods inherited from interface oracle.jbo.Properties

getProperty, refreshProperty

Methods inherited from interface oracle.jbo.XMLInterface

readXML, readXML, writeXML, writeXML, writeXML, writeXML

Field Detail

mQRef

protected ViewObjectImpl mQRef

mViews

protected com.sun.java.util.collections.ArrayList mViews

mDefaultView

protected ViewRowSetIteratorImpl mDefaultView

mMasterViews

protected com.sun.java.util.collections.ArrayList mMasterViews

mUserParams

protected com.sun.java.util.collections.ArrayList mUserParams

mParamValues

protected java.lang.Object[] mParamValues

VIEWLINK_MODE_UNINITIALIZED

public static final byte VIEWLINK_MODE_UNINITIALIZED

See Also:: Constant Field Values

VIEWLINK_MODE_INCONSISTENT

public static final byte VIEWLINK_MODE_INCONSISTENT

See Also:: Constant Field Values

VIEWLINK_MODE_CONSISTENT

public static final byte VIEWLINK_MODE_CONSISTENT

See Also:: Constant Field Values

VIEWLINK_MODE_DEFAULT

public static final byte VIEWLINK_MODE_DEFAULT

See Also:: Constant Field Values

mDefaultViewLinkMode

public static byte mDefaultViewLinkMode

Constructor Detail

ViewRowSetImpl

public ViewRowSetImpl(ViewObjectImpl vo,
                      java.lang.String name,
ViewRowSetIteratorImpl masterRSI)

Constructs a new secondary (non-default) view row set.
Parameters:: vo - the View Object to which this view row set belongs.; name - name to be given to this view row set. If null, the view row set is assigned the default row set name, which is the View Object's name, plus "_RowSet".; masterRSI - the master row set iterator if this view row set will be detail in a master-detail relationship. null otherwise.

Method Detail

getSyncLock

public final java.lang.Object getSyncLock()

Description copied from interface: RowSetIterator

Gets the locking object for this Row Set Iterator. Actually, this method locks the Application Module to which this Row Set Iterator belongs. See ApplicationModule.getSyncLock() for details.

Specified by:: getSyncLock in interface RowSetIterator

Returns:: the locking object.

isNameGenerated

public final boolean isNameGenerated()

Description copied from interface: RowSetIterator

Tests if the Iterator's name was generated by the system.

Specified by:: isNameGenerated in interface RowSetIterator

Returns:: true if the name was generated by the system. false if the name was given by the user and not generated by the system.

isDefaultRS

public boolean isDefaultRS()

Internal: Applications should not use this method.

Indicates whether this row set is the default row set for the View Object.

Returns:: indicates whether this row set is the default row set for the View Object.

close

protected void close()

Closes the view row set.

It closes all row set iterators, removes itself from all master row set iterators, and possibly remove the query collection from the query collection list.

closeRowSet

public void closeRowSet()

Description copied from interface: RowSet

Closes the row set. It closes all row set iterators that belong to this row set. If this row set is a detail row set in a master-detail relationship, closeRowSet removes this row set from the master row set iterator.

Specified by:: closeRowSet in interface RowSet

closeRowSetIterator

public void closeRowSetIterator()

Description copied from interface: RowSetIterator

Closes this row set iterator. If this row set iterator is a master in a master-detail relationship, closeRowSetIterator closes all detail row sets.

After that, it fires a RowSetManagementListener.iteratorClosed() event to its RowSetManagementListener's.

Then, it deregisters this row set iterator from the owning row set, and deregisters all its listeners.

Specified by:: closeRowSetIterator in interface RowSetIterator

execute

public void execute(boolean forceFlag,
                    boolean notifyFlag)

Executes the query.

forceFlag controls whether a new query collection should be force-created or not. If true, the query collection list is not consulted and a new query collection is created. If false, we check the query collection list to see if one with the key exists. If so, we reuse the existing one.

If forceFlag is true, the application may see a different set of rows than before, depending on the where-clause and data modifications performed by this application or other users.

See ViewObjectImpl.executeQuery for explanation.

Parameters:: forceFlag - indicates whether to force-create the query collection.; notifyFlag - indicates whether to send notification or not. If true, each row set iterator will fire a range refreshed event.
See Also:: ViewObjectImpl.executeQuery()

execute

public void execute(boolean forceFlag,
                    boolean notifyFlag,
Row[] masterRows)

executeQuery

public void executeQuery()

Executes the query.

See ViewObjectImpl.executeQuery for details.

Specified by:: executeQuery in interface RowSet
Overrides:: executeQuery in class oracle.jbo.server.RowSetImpl

See Also:: ViewObjectImpl.executeQuery()

executeDetailQuery

public void executeDetailQuery(Row[] masterRows)

Specified by:: executeDetailQuery in interface WSDetailQuery

createRowSetIterator

public RowSetIterator createRowSetIterator(java.lang.String name)

Creates and returns a new row set iterator on this row set.

Specified by:: createRowSetIterator in interface RowSet
Overrides:: createRowSetIterator in class oracle.jbo.server.RowSetImpl

Parameters:: name - the name of the new row set iterator.
Returns:: the new row set iterator.

getRowSetIterators

public RowSetIterator[] getRowSetIterators()

Description copied from interface: RowSet

Gets all Row Set Iterators that belong to this row set.

Specified by:: getRowSetIterators in interface RowSet

Returns:: the array of Row Set Iterators.

findRowSetIterator

public RowSetIterator findRowSetIterator(java.lang.String rsiName)

Description copied from interface: RowSet

Gets the named Row Set Iterator that was created at runtime for this Row Set.

Specified by:: findRowSetIterator in interface RowSet

Parameters:: rsiName - a Row Set Iterator name. If null, it returns the the Row Set.
Returns:: the Row Set Iterator. null if the named Row Set Iterator is not not found.

isExecuted

public boolean isExecuted()

Indicates whether the row set has been executed or not.

Specified by:: isExecuted in interface RowSet

Returns:: true if the row set has been executed.

getQueryCollection

public final QueryCollection getQueryCollection()

Internal: Applications should not use this method.

Returns the query collection for this row set.

Returns:: the QueryCollection for this row set.

hasDefaultRowSetIterator

public boolean hasDefaultRowSetIterator()

getDefaultRowSetIterator

public ViewRowSetIteratorImpl getDefaultRowSetIterator()

Returns the default ViewRowSetIteratorImpl.

The default row set iterator has the same name as this row set object.

Returns:: the default row set iterator.

addListener

public void addListener(java.lang.Object listener)

Adds an event listener to this object.

listener should implement the RowSetListener interface.

Specified by:: addListener in interface NavigatableRowIterator
Overrides:: addListener in class RowSetHelper

Parameters:: listener - the RowSetListener registering interest in this object's events.

removeListener

public void removeListener(java.lang.Object listener)

Removes an event listener to this object from the listener list.

listener should implement the RowSetListener interface.

Specified by:: removeListener in interface NavigatableRowIterator
Overrides:: removeListener in class RowSetHelper

Parameters:: listener - the RowSetListener to be removed.

addManagementListener

public void addManagementListener(RowSetManagementListener listener)

Description copied from interface: RowSetIterator

Adds a subscriber (listener) to be notified of RowSetManagementListener events generated by this Row Set Iterator.

Specified by:: addManagementListener in interface RowSetIterator
Overrides:: addManagementListener in class RowSetHelper

Parameters:: listener - the subscriber to be added. It should implement RowSetManagementListener.

removeManagementListener

public void removeManagementListener(RowSetManagementListener listener)

Description copied from interface: RowSetIterator

Removes a subscriber (listener) for RowSetManagementListener events generated by this row set iterator.

Specified by:: removeManagementListener in interface RowSetIterator
Overrides:: removeManagementListener in class RowSetHelper

Parameters:: listener - the subscriber to be removed.

getMasterViewRowSetIteratorsList

public com.sun.java.util.collections.ArrayList getMasterViewRowSetIteratorsList()

Returns a list of all master row set iterators for this row set.

Returns:: a list of all master row set iterators for this row set.

getMasterViewRowSetIterators

public java.util.Vector getMasterViewRowSetIterators()

Returns a list of all master row set iterators for this row set.

Returns:: a list of all master row set iterators for this row set.

setMasterRowSetIterator

public boolean setMasterRowSetIterator(RowSetIterator masterRSI)

Sets the master row set iterator in a master-detail View Link.

See ViewObjectImpl.setMasterRowSetIterator for details.

Specified by:: setMasterRowSetIterator in interface RowSet

Parameters:: masterRSI - master row set iterator.
Returns:: indicates whether the master row set iterator was successfully set or not.
See Also:: ViewObjectImpl.setMasterRowSetIterator(RowSetIterator)

removeMasterRowSetIterator

public boolean removeMasterRowSetIterator(RowSetIterator masterRSI)

Removes the master row set iterator in a master-detail View Link.

See ViewObjectImpl.removeMasterRowSetIterator for details.

Specified by:: removeMasterRowSetIterator in interface RowSet

Parameters:: masterRSI - master row set iterator to remove.
Returns:: indicates whether the master row set iterator was successfully removed or not.
See Also:: ViewObjectImpl.removeMasterRowSetIterator(RowSetIterator)

isDirty

public boolean isDirty()

Indicates whether data modifications have been performed since the last database post through this row set.

Returns:: flag indicating whether the row set is dirty.

isNotifiedRefresh

protected boolean isNotifiedRefresh()

Indicates whether row set refresh event has been notified to the row set's listeners or not.

Returns:: flag indicating whether refresh was notified or not.

makeRowCopy

public ViewRowImpl makeRowCopy(ViewRowImpl vr)

insertRowAt

public void insertRowAt(int index,
Row row)

Inserts a view row at an absolute row index specified by index.

An absolute row index is a row index in the entire row set. It starts at 0.

Parameters:: index - absolute row index at which the row is to be inserted.; row - the row to inserted.

removeRowAt

public void removeRowAt(int index)

Removes a view row at an absolute row index specified by index.

An absolute row index is a row index in the entire row set. It starts at 0.

Parameters:: index - absolute row index of the row to remove.

removeRowFromCollectionAt

public void removeRowFromCollectionAt(int index)

createAndInitRow

public Row createAndInitRow(AttributeList initVals)

Specified by:: createAndInitRow in interface RowIterator

createRow

public Row createRow()

Creates a new view row.

See ViewObjectImpl.createRow for details.

Specified by:: createRow in interface RowIterator
Overrides:: createRow in class oracle.jbo.server.RowSetImpl

Returns:: the new view row.
See Also:: ViewObjectImpl.createRow()

getRowCount

public int getRowCount()

Returns the total number of rows in this row set.

See ViewObjectImpl.getRowCount for details.

Specified by:: getRowCount in interface RowIterator

Returns:: the number of rows in the row set.
See Also:: ViewObjectImpl.getRowCount()

getEstimatedRangePageCount

public int getEstimatedRangePageCount()

Description copied from interface: RowSetIterator

Returns getEstimatedRowCount()/rangePageSize, if rangeSize > 0. For rangeSize <= 0, returns 1.

This number may fluxuate when the View Object is syncronized with its Entity Object.

Specified by:: getEstimatedRangePageCount in interface RowSetIterator

Returns:: the number of range-pages that this RowSet collection has.

getEstimatedRowCount

public long getEstimatedRowCount()

Returns an estimated number of rows in this row set.

See ViewObjectImpl.getEstimatedRowCount for details.

Specified by:: getEstimatedRowCount in interface RowSet

Returns:: an estimated number of rows in the row set.
See Also:: ViewObjectImpl.getEstimatedRowCount()

getMasterRowSetIterators

public RowSetIterator[] getMasterRowSetIterators()

Returns an array of all master row set iterators for this row set.

Specified by:: getMasterRowSetIterators in interface RowSet

Returns:: an array of all master row set iterators for this row set.

getApplicationModule

public ApplicationModule getApplicationModule()

Returns the application module to which this row set's View Object belongs.

Specified by:: getApplicationModule in interface RowSet

Returns:: the ApplicationModule this View Object belongs to.

getViewObject

public ViewObject getViewObject()

Returns this row set's View Object.

Specified by:: getViewObject in interface RowSet
Overrides:: getViewObject in class oracle.jbo.server.RowSetImpl

Returns:: the ViewObject this row set belongs to.

getRowSet

public RowSet getRowSet()

Implements RowSetIterator.getRowSet.

Specified by:: getRowSet in interface RowSetIterator

Returns:: the row set interface of this object.

getRowSetIterator

public RowSetIterator getRowSetIterator()

Returns the row set iterator interface of this object.

Returns:: the row set interface of this object.

setRangeSize

public int setRangeSize(int size)

Sets the range size for the iterator.

See ViewObjectImpl.setRangeSize for details.

Specified by:: setRangeSize in interface RowIterator

Parameters:: size - the new range size.
Returns:: the new range size.
See Also:: ViewObjectImpl.setRangeSize(int)

getRangeSize

public int getRangeSize()

Returns the range size of the iterator.

See ViewObjectImpl.getRangeSize for details.

Specified by:: getRangeSize in interface RowIterator

Returns:: the range size.
See Also:: ViewObjectImpl.getRangeSize()

getRangeStart

public int getRangeStart()

Returns the absolute row index of the first row in the range.

See ViewObjectImpl.getRangeStart for details.

Specified by:: getRangeStart in interface RowIterator

Returns:: the absolute row index of the first row in the range.
See Also:: ViewObjectImpl.getRangeStart()

setRangeStart

public int setRangeStart(int start)

Sets the range position by the absolute row index specified in start.

See ViewObjectImpl.setRangeStart for details.

Specified by:: setRangeStart in interface RowIterator

Parameters:: start - absolute row index of the row that should be positioned as the first row of the range. An absolute row index is a row index in the entire row set. It starts at 0.
Returns:: the absolute row index of the first row of the range.
See Also:: ViewObjectImpl.setRangeStart(int)

scrollRange

public int scrollRange(int amount)

Scrolls the range by amount.

See ViewObjectImpl.scrollRange for details.

Specified by:: scrollRange in interface RowIterator

Parameters:: amount - the number of rows to scroll.
Returns:: the actual number of rows scrolled. A negative number indicates that the scroll was scrolled upward.
See Also:: ViewObjectImpl.scrollRange(int)

scrollToRangePage

public int scrollToRangePage(int amount)

Description copied from interface: RowSetIterator

Moves the row set range start to the given page index where every page consists of RangeSize number of rows. PageIndex should start at page number 1. This method calculates the rowIndex that should start at that page and then scrolls the iterator to start at that row by using the following calculation:

(rangeSize * (pageSize-1)) - getRangeStart();

Specified by:: scrollToRangePage in interface RowSetIterator

Parameters:: amount - the page number to go to in the result set.
Returns:: the number of rows actually scrolled.

scrollRangeTo

public int scrollRangeTo(Row row,
                         int index)

Scrolls the range to a specific row.

See ViewObjectImpl.scrollRangeTo for details.

Specified by:: scrollRangeTo in interface RowIterator

Parameters:: row - the row to scroll the range to.; index - the range index to position the row at.
Returns:: the actual number of rows scrolled. A negative number indicates that the scroll was scrolled upward.
See Also:: ViewObjectImpl.scrollRangeTo(Row, int)

getAllRowsInRange

public Row[] getAllRowsInRange()

Returns an array of all rows in the iterator's range.

See ViewObjectImpl.getAllRowsInRange for details.

Specified by:: getAllRowsInRange in interface RowIterator

Returns:: an array of view rows.
See Also:: ViewObjectImpl.getAllRowsInRange()

getNextRangeSet

public Row[] getNextRangeSet()

Description copied from interface: RowSetIterator

Gets the next set of rows in the range. This method is good for processing rows in a range-ful fashion. Suppose the Row Set has 20 rows and the Iterator range size is 10. Suppose further that the Iterator is showing rows 0 through 9 (0-based indexing). Calling getNextRangeSet() will return rows 10 through 19.

If the next range set does not have enough rows to fill up the range, getNextRangeSet() returns a partially filled range. That is, this method operates as if the iteration mode is RowIterator.ITER_MODE_LAST_PAGE_PARTIAL.

If there is no more rows, this method returns an empty array (an array of length 0).

While obtaining the next range set, the range will be scrolled. This causes a #oracle.jbo.ScrollEvent to be sent to #oracle.jbo.RowSetListener.rangeScrolled(oracle.jbo.ScrollEvent). To pick up such an event, the listener object must implement the #oracle.jbo.RowSetListener interface. Further, this listener must be registered through a call to #oracle.jbo.NavigatableRowIterator.addListener(Object) (the listener object passed in as the parameter to addListener).

After the next range set is obtained, the method sets the first Row of the range as the current row. This may fire a #oracle.jbo.NavigationEvent and sends it to #oracle.jbo.RowSetListener.navigated(oracle.jbo.NavigationEvent).

Specified by:: getNextRangeSet in interface RowSetIterator

Returns:: an array of Rows in the next range set. An array of length 0 if there are no more rows.

getPreviousRangeSet

public Row[] getPreviousRangeSet()

Description copied from interface: RowSetIterator

Gets the previous set of rows in the range. This method is good for processing rows in a range-ful fashion. Suppose the Row Set has 20 rows and the Iterator range size is 10. Suppose further that the Iterator is showing rows 10 through 19 (0-based indexing). Calling getPreviousRangeSet() will return rows 0 through 9.

If there is no more rows, this method returns an empty array (an array of length 0).

While obtaining the previous range set, the range will be scrolled. This causes a #oracle.jbo.ScrollEvent to be sent to #oracle.jbo.RowSetListener.rangeScrolled(oracle.jbo.ScrollEvent). To pick up such an event, the listener object must implement the #oracle.jbo.RowSetListener interface. Further, this listener must be registered through a call to #oracle.jbo.NavigatableRowIterator.addListener(Object) (the listener object passed in as the parameter to addListener).

After the previous range set is obtained, the method sets the first Row of the range as the current row. This may fire a #oracle.jbo.NavigationEvent and sends it to #oracle.jbo.RowSetListener.navigated(oracle.jbo.NavigationEvent).

Specified by:: getPreviousRangeSet in interface RowSetIterator

Returns:: an array of Rows in the previous range set. An array of length 0 if there are no more rows.

enumerateRowsInRange

public java.util.Enumeration enumerateRowsInRange()

Creates and returns an enumerator of the rows in the range.

Specified by:: enumerateRowsInRange in interface RowIterator
Overrides:: enumerateRowsInRange in class oracle.jbo.server.RowSetImpl

Returns:: an enumerator.

getFetchedRowCount

public int getFetchedRowCount()

Returns the number of rows fetched from the JDBC RestultSet.

Specified by:: getFetchedRowCount in interface RowIterator

Returns:: the number of rows fetched so far.

isRangeAtBottom

public boolean isRangeAtBottom()

Indicates whether the iterator range contains the last row of the row set.

See ViewObjectImpl.isRangeAtBottom for details.

Specified by:: isRangeAtBottom in interface RowIterator

Returns:: true if the range contains the last row, false if not.
See Also:: ViewObjectImpl.isRangeAtBottom()

isRangeAtTop

public boolean isRangeAtTop()

Indicates whether the iterator range contains the first row of the row set.

See ViewObjectImpl.isRangeAtTop for details.

Specified by:: isRangeAtTop in interface RowIterator

Returns:: true if the range contains the first row, false if not.
See Also:: ViewObjectImpl.isRangeAtTop()

insertRow

public void insertRow(Row row)

Inserts the row into the row set.

This method does change currency. It sets the inserted row to be the current row (for the RSI through which the row is inserted). From an events standpoint, insertRow will generate two events: insert followed by navigated.

See ViewObjectImpl.insertRow for details.

Specified by:: insertRow in interface RowIterator
Overrides:: insertRow in class oracle.jbo.server.RowSetImpl

Parameters:: row - the view row to insert.
See Also:: ViewObjectImpl.insertRow(Row)

insertRowAtRangeIndex

public void insertRowAtRangeIndex(int index,
Row row)

Inserts the row into the row set at the specified range index. Using this method does not change currency.

See ViewObjectImpl.insertRowAtRangeIndex for details.

Specified by:: insertRowAtRangeIndex in interface RowIterator

Parameters:: index - the range index into which the row is to be inserted.; row - the view row to insert.
See Also:: ViewObjectImpl.insertRowAtRangeIndex(int, Row)

getRowFromHandle

public Row getRowFromHandle(java.lang.Object rowHandle)

Internal: Applications should not use this method.

Returns the row with a handle specified by hdl.

See ViewObjectImpl#getRowFromHandle(Object) for details.

Parameters:: rowHandle - the row handle.
Returns:: the row identified by the row handle.
See Also:: ViewObjectImpl.getRowFromHandle(Object)

removeRowHandle

public void removeRowHandle(java.lang.Object rowHandle)

Internal: Applications should not use this method.

Removes the row handle from the row handle hash table.

See ViewObjectImpl.removeRowHandle for details.

Parameters:: rowHandle - the row handle to remove.
See Also:: ViewObjectImpl.removeRowHandle(Object)

getRow

public Row getRow(Key key)

Returns the first row whose key matches key.

See ViewObjectImpl.getRow for details.

Specified by:: getRow in interface RowIterator

Parameters:: key - key to match.
Returns:: the first matching row. null if no match.
See Also:: ViewObjectImpl.getRow(Key)

getRangeIndexOf

public int getRangeIndexOf(Row row)

Returns the range index of the row specified by row.

See ViewObjectImpl.getRangeIndexOf for details.

Specified by:: getRangeIndexOf in interface RowIterator

Parameters:: row - the row in question.
Returns:: the range index of the row. -1 if the row is not within the range.
See Also:: ViewObjectImpl.getRangeIndexOf(Row)

removeCurrentRow

public void removeCurrentRow()

Removes the current row.

See ViewObjectImpl.removeCurrentRow for details.

Specified by:: removeCurrentRow in interface RowIterator

See Also:: ViewObjectImpl.removeCurrentRow()

removeCurrentRowFromCollection

public void removeCurrentRowFromCollection()

Description copied from interface: RowIterator

Removes the current Row object from the collection.

It does not cause the row to be deleted from the database table. It simply removes the row from the row collection.

Specified by:: removeCurrentRowFromCollection in interface RowIterator

setRowValidation

public void setRowValidation(boolean flag)

Description copied from interface: RowIterator

Sets the validation flag on this iterator. By default a RowIterator validates the current row when navigating to another row. This method can be used to turn this row-validation off by passing 'false' as parameter.

Specified by:: setRowValidation in interface RowIterator

Parameters:: flag - Whether to turn row validation off or not.

setCurrentRow

public boolean setCurrentRow(Row row)

Moves the iterator to the row specified by row.

See ViewObjectImpl.setCurrentRow for details.

Specified by:: setCurrentRow in interface RowIterator

Parameters:: row - the new current row.
Returns:: indicates whether the current row was successfully set or not.
See Also:: ViewObjectImpl.setCurrentRow(Row)

setCurrentRowAtRangeIndex

public boolean setCurrentRowAtRangeIndex(int index)

Moves the iterator to the row whose range index is index.

See ViewObjectImpl.setCurrentRowAtRangeIndex for details.

Specified by:: setCurrentRowAtRangeIndex in interface RowIterator

Parameters:: index - range index to which to move the current row.
Returns:: indicates whether the current row was successfully set or not.
See Also:: ViewObjectImpl.setCurrentRowAtRangeIndex(int)

getCurrentRow

public Row getCurrentRow()

Returns the current row of the iterator.

See ViewObjectImpl.getCurrentRow for details.

Specified by:: getCurrentRow in interface RowIterator

Returns:: the current row. null if no current row.
See Also:: ViewObjectImpl.getCurrentRow()

getCurrentRowIndex

public int getCurrentRowIndex()

Returns the absolute row index of the current row in the row set.

See ViewObjectImpl.getCurrentRowIndex for details.

Specified by:: getCurrentRowIndex in interface RowIterator

Returns:: the absolute row index of the current row. -1 if the row set has not be executed, or the iterator has just been reset.
See Also:: ViewObjectImpl.getCurrentRowIndex()

getCurrentRowSlot

public int getCurrentRowSlot()

Returns the current row slot status.

See ViewObjectImpl.getCurrentRowSlot for details.

Specified by:: getCurrentRowSlot in interface RowIterator

Returns:: one of the slot status constants listed above.
See Also:: ViewObjectImpl.getCurrentRowSlot()

getIterMode

public int getIterMode()

Description copied from interface: RowIterator

Gets the current iteration mode. See Iteration Modes above for details on iteration mode which controls how the range behaves when it reaches the end of the Row Set.

Specified by:: getIterMode in interface RowIterator

Returns:: ITER_MODE_LAST_PAGE_PARTIAL if the iteration mode is "partial-last-page", ITER_MODE_LAST_PAGE_FULL if it is "full-last-page".

setIterMode

public void setIterMode(int mode)

Description copied from interface: RowIterator

Sets the iteration mode for this Row Iterator. See Iteration Modes above for details on iteration mode which controls how the range behaves when it reaches the end of the Row Set.

Specified by:: setIterMode in interface RowIterator

Parameters:: mode - should be ITER_MODE_LAST_PAGE_PARTIAL if the iteration mode is to be "partial-last-page", ITER_MODE_LAST_PAGE_FULL if it is to be "full-last-page".

hasNext

public boolean hasNext()

Indicates whether the iterator has a next row or not.

See ViewObjectImpl.hasNext for details.

Specified by:: hasNext in interface RowIterator
Overrides:: hasNext in class oracle.jbo.server.RowSetImpl

Returns:: true if there is a next row, false if not.
See Also:: ViewObjectImpl.hasNext()

hasPrevious

public boolean hasPrevious()

Indicates whether the iterator has a previous row or not.

See ViewObjectImpl.hasPrevious for details.

Specified by:: hasPrevious in interface RowIterator

Returns:: true if there is a previous row, false if not.
See Also:: ViewObjectImpl.hasPrevious()

first

public Row first()

Navigates to the first row in the row set.

See ViewObjectImpl.first for details.

Specified by:: first in interface RowIterator

Returns:: the first row, which becomes the current row for the iterator. null if the row set has no rows.
See Also:: ViewObjectImpl.first()

last

public Row last()

Navigates to the last row in the row set.

See ViewObjectImpl.last for details.

Specified by:: last in interface RowIterator

Returns:: the last row, which becomes the current row for the iterator. null if the row set has no rows.
See Also:: ViewObjectImpl.last()

public Row next()

Navigates to the next row in the row set.

See ViewObjectImpl.next for details.

Specified by:: next in interface RowIterator
Overrides:: next in class oracle.jbo.server.RowSetImpl

Returns:: the next row, which becomes the current row for the iterator. null if no next row. If no next row, the current row is not moved.
See Also:: ViewObjectImpl.next()

public Row previous()

Navigates to the previous row in the row set.

See ViewObjectImpl.previous for details.

Specified by:: previous in interface RowIterator

Returns:: the previous row, which becomes the current row for the iterator. null if no previous row. If no previous row, the current row is not moved.
See Also:: ViewObjectImpl.previous()

reset

public void reset()

Resets the iterator.

See ViewObjectImpl.reset for details.

Specified by:: reset in interface RowIterator

See Also:: ViewObjectImpl.reset()

getDetailRowSets

public RowSet[] getDetailRowSets()

Returns an array of all detail row sets for this row set iterator. See ViewObjectImpl.getDetailRowSets for details.

Specified by:: getDetailRowSets in interface RowSetIterator

Returns:: an array of all detail row sets for this row set iterator.
See Also:: ViewObjectImpl.getDetailRowSets()

createDetailRowSet

public RowSet createDetailRowSet(java.lang.String rsName,
                                 java.lang.String linkDefName)

Creates and returns an new detail row set for this row set iterator.

See ViewObjectImpl.createDetailRowSet for details.

Specified by:: createDetailRowSet in interface RowSetIterator

Parameters:: rsName - the name of the row set to be assigned to the new detail row set.; linkDefName - identifies the View Link definition that defines the master-detail relationship between this row set iterator and the new detail row set.
Returns:: the new detail row set.
See Also:: ViewObjectImpl.createDetailRowSet(String, String)

setForwardOnly

public void setForwardOnly(boolean isForwardOnly)

Sets whether this row set will be forward-only or not.

See ViewObjectImpl.setForwardOnly for details.

Specified by:: setForwardOnly in interface RowSet

Parameters:: isForwardOnly - indicates whether the row set should be forward-only or not.
See Also:: ViewObjectImpl.setForwardOnly(boolean)

isForwardOnly

public final boolean isForwardOnly()

Indicates whether this row set is forward-only or not.

See ViewObjectImpl.isForwardOnly for details.

Specified by:: isForwardOnly in interface RowSet

Returns:: indicates whether this row set is forward-only or not.
See Also:: ViewObjectImpl.isForwardOnly()

getAccessMode

public final byte getAccessMode()

Specified by:: getAccessMode in interface RowSet

Returns:: Returns the current access mode for this RowSet.
See Also:: RowSet.setAccessMode(byte)

setAccessMode

public void setAccessMode(byte flag)

Description copied from interface: RowSet

Constrains the row access based on the following settings:

SCROLLABLE - if this RowSet should fetch rows and cache the ViewRows in a collection. This is the most flexible mode for accessing rows and working with a RowSet.
FORWARD_ONLY - if this RowSet should only provide sequential access to Rows in its collection. The iterators on this RowSet will not allow scrolling back.
RANGE_PAGING - if this RowSet should fetch rows in ranges (set using setRangeSize()), such that on scroll to the the next range or to fetch a row that's not in the current range, it's fetched back from the database using ROWNUM query and the row at the desired index is placed as the first row in the current range.
New rows inserted in this mode will be inserted at the beginning of the rowset to maintain their row indices if the new-rows are scrolled out of the current set.

Switching access modes for a rowset will not take effect until the next explicit call to executeQuery.

Specified by:: setAccessMode in interface RowSet

Parameters:: flag - One of the three enumerated values SCROLLABLE, FORWARD_ONLY, RANGE_PAGING

getViewLinkMode

public byte getViewLinkMode()

Internal: Applications should not use this method.

setViewLinkMode

public void setViewLinkMode(byte val)

Internal: Applications should not use this method.

setAssociationConsistent

public void setAssociationConsistent(boolean isConsistent)

Sets the association-consistent flag for this row set.

See ViewObjectImpl.setAssociationConsistent for details.

Specified by:: setAssociationConsistent in interface RowSet

Parameters:: isConsistent - indicates whether association-consistency should be on or not.
See Also:: ViewObjectImpl.setAssociationConsistent(boolean)

isMaxFetchSizeExceeded

public final boolean isMaxFetchSizeExceeded()

Description copied from interface: RowSet

Tests if the query result has been fetched to the end and the end was reached due to hitting the maxFetchSize limit

Specified by:: isMaxFetchSizeExceeded in interface RowSet

Returns:: true if the result set has been fetched to the maxFetchSize limit and there are still more rows in the database.

isFetchComplete

public boolean isFetchComplete()

Description copied from interface: RowSet

Tests if the query result set has been fetched to the end.

Specified by:: isFetchComplete in interface RowSet

Returns:: true if the result set has been fetched to the end.

isAssociationConsistent

public boolean isAssociationConsistent()

Returns the association-consistent flag for this row set.

See ViewObjectImpl.isAssociationConsistent for details.

Specified by:: isAssociationConsistent in interface RowSet

Returns:: the association-consistent flag for this row set.
See Also:: ViewObjectImpl.isAssociationConsistent()

getRowCountInRange

public int getRowCountInRange()

Returns the actual number of rows in the range.

See ViewObjectImpl.getRowCountInRange for details.

Specified by:: getRowCountInRange in interface RowIterator

Returns:: the actual number of rows in the range.
See Also:: ViewObjectImpl.getRowCountInRange()

setWhereClauseParams

public void setWhereClauseParams(java.lang.Object[] values)

Sets bind values for the query.

See ViewObjectImpl.setWhereClauseParams for details.

Specified by:: setWhereClauseParams in interface RowSet

Parameters:: values - an array of bind values.
See Also:: ViewObjectImpl.setWhereClauseParams(Object[])

setWhereClauseParam

public void setWhereClauseParam(int index,
                                java.lang.Object value)

Sets the bind value at a specified index.

See ViewObjectImpl.setWhereClauseParam for details.

Specified by:: setWhereClauseParam in interface RowSet

Parameters:: index - index of the bind value.; value - the bind value.
See Also:: ViewObjectImpl.setWhereClauseParam(int, Object)

getWhereClauseParams

public java.lang.Object[] getWhereClauseParams()

Returns an array of bind values currently specified for the query. See ViewObjectImpl.getWhereClauseParams for details.

Specified by:: getWhereClauseParams in interface RowSet

Returns:: an array of bind values.
See Also:: ViewObjectImpl.getWhereClauseParams()

getParametersAsStorageTypes

public java.lang.Object[] getParametersAsStorageTypes()

Returns an array of bind values to be used for binding to the query.

See ViewObjectImpl.getParametersAsStorageTypes for details.

Returns:: an array of the bind values as torage types. null if there is no bind value to return.
See Also:: ViewObjectImpl.getParametersAsStorageTypes()

getParametersAsStorageTypes

public java.lang.Object[] getParametersAsStorageTypes(Row[] masterRows)

getRow

public Row getRow(int index)

Returns the row at absolute row index of index.

An absolute row index is a row index in the entire row set. It starts at 0.

Parameters:: index - the absolute row index.
Returns:: the row. null if the index is invalid.

getRowAtRangeIndex

public Row getRowAtRangeIndex(int index)

Returns the row at range index index.

Range index is a 0 based index within the range.

Specified by:: getRowAtRangeIndex in interface RowIterator

Parameters:: index - range index of the row.
Returns:: the row at the specified range index. null if the index is outside the range, or if there is no row at the specified index.

dumpViewRowCache

public static void dumpViewRowCache(RowSetIterator rsi,
                                    java.io.Writer out)

Internal: Applications should not use this method.

Debug routine that prints the view row cache content for the query collection.

View row cache manages mapping between entity rows and view rows. If a View Object consists of entities A, B, C, each view row consists of three entity rows (from A, B, and C, respectively). For this, the view row cache manages three hash tables, each mapping the entity row to view rows that use it as a constituent entity row.

This method dumps the content of that mapping to out.

Parameters:: rsi - the row set iterator whose view row cache is to be dumped.; out - where to dump the output.

getRows

protected Row[] getRows(EntityImpl entity)

Returns an array of view rows that use the specified entity row.

A view row consists of entity rows. This method returns all view rows (so far retrieved) that use the entity row specified by entity

Returns:: an arry of rows that use entity. null if no view row uses entity.

findByKey

public Row[] findByKey(Key key,
                       int maxNumOfRows)

Finds and returns View rows that match the specified key.

See #oracle.jbo.RowIterator.findByKey(oracle.jbo.Key, int) for details.

Specified by:: findByKey in interface RowIterator
Overrides:: findByKey in class oracle.jbo.server.RowSetImpl

Parameters:: key - the key to match.; maxNumOfRows - the maximum size of the array to return, or -1 to return all rows.
Returns:: an array of rows matching the key.

createKey

public Key createKey(AttributeList nvp)

Description copied from interface: RowIterator

Given a list of name-value pairs, creates a Key object that matches the key structure for the ViewObject for this RowItertor. This Key object could be used as a valid argument to findByKey. This Key will have null values for attributes expected in the key structure for this ViewObject, but not found in the given set of name-value pairs.

Specified by:: createKey in interface RowIterator

findByEntity

public Row[] findByEntity(int eRowHandle,
                          int maxNumOfRows)

Description copied from interface: RowIterator

Finds and returns View rows that use the Entity row, identified by the Entity row handle, eRowHandle.

Specified by:: findByEntity in interface RowIterator

Parameters:: eRowHandle - the Entity row handle.; maxNumOfRows - the maximum size of the row array to return, or -1 to return all rows.
Returns:: an array of View rows that use the Entity row.

getParameters

public java.lang.Object[] getParameters(boolean nullValueFlag)

Returns an array of bind values to be used for binding to the query.

This array is a union of the following set of bind values:

Bind values supplied by the application (setWhereClauseParam).
Bind values to be used for where-clause expressions built from View Links. Values are supplied by the master row.

This method differs from getParametersAsStorageTypes in that, if the bind values are domain instanes, this method returns them as is, while getParametersAsStorageTypes returns the actual data out of the domain.

Returns:: an array of the bind values. null if there is no bind value to return.

getParameters

public java.lang.Object[] getParameters(boolean nullValueFlag,
Row[] masterRows)

getProperties

public java.util.Hashtable getProperties()

Retrieves all properties. It is a union of properties on this View Object and those on the view definition.

Specified by:: getProperties in interface Properties
Specified by:: getProperties in class PropertiesHelper

Returns:: hash table (name-value pairs) of all properties.

printActiveObjsTab

public void printActiveObjsTab(java.io.PrintWriter pw)

printRUChain

public void printRUChain(java.io.PrintWriter pw)

printColl

public void printColl(java.io.PrintWriter pw,
                      int printFlag)

getCollMgmtInfo

public int[] getCollMgmtInfo()

setPassivationEnabled

public void setPassivationEnabled(boolean flag)

Advanced Internal method only.

isPassivationEnabled

public boolean isPassivationEnabled()

Advanced Internal method only.

writeXML

public final Node writeXML(long options,
                           com.sun.java.util.collections.HashMap voAttrRules)

Description copied from interface: XMLInterface

Renders data in a canonical XML-format. The classes ViewObjectImpl and ViewRowImpl implement this method to render data in XML.

Use this method whenever data is required in XML format, either to present a UI (after converting XML data into some HTTP format using a stylesheet) or to pass the data as payload for messages via JMS.

The options parameter represents a set of bit flags that will control the writeXML behavior. The following bit flags have been defined:

public static long XML_OPT_LIMIT_RANGE = 0x00000001 - Controls whether writeXML will only write rows in the range. If this flag is off, all rows in the row set will be written. If this flag is on, only rows in the current range will be written.
public static long XML_OPT_CHANGES_ONLY = 0x00000002 - Controls whether only changed attribute values of an entity row is written. If this is on, only the attributes whose value has been marked as "changed" will be written. If this is off, all attributes (regardless of whether the attribute value has been changed or not) will be written. This flag is relevant only when writing EntityImpl.

The voAttrMap parameter represents in a hashmap, the mapping between a given ViewObject's definition type and the corresponding Attributes/accessors to render. A null entry in the hashmap means, render all attributes and accessors of that viewobject type.

Specified by:: writeXML in interface XMLInterface

Parameters:: options - a set of bit flags that will control the writeXML; voAttrRules - HashMap containing Definition names of ViewObjects and an array of AttributeDef to render for a ViewObject of that definition type.

writeXML

public Node writeXML(int depthCount,
                     long options)

Description copied from interface: XMLInterface

Renders data in a canonical XML-format. The classes ViewObjectImpl and ViewRowImpl implement this method to render data in XML.

The depthcount parameter represents to what level the rendering should recurse. A depthcount of zero (0) means do not traverse any View Links while rendering. One (1) means traverse the View Links on this object but no View Links thereafter, and so on.

The options parameter represents a set of bit flags that will control the writeXML behavior. The following bit flags have been defined:

public static long XML_OPT_LIMIT_RANGE = 0x00000001 - Controls whether writeXML will only write rows in the range. If this flag is off, all rows in the row set will be written. If this flag is on, only rows in the current range will be written.
public static long XML_OPT_CHANGES_ONLY = 0x00000002 - Controls whether only changed attribute values of an entity row is written. If this is on, only the attributes whose value has been marked as "changed" will be written. If this is off, all attributes (regardless of whether the attribute value has been changed or not) will be written. This flag is relevant only when writing EntityImpl.

Specified by:: writeXML in interface XMLInterface

Parameters:: depthCount - represents to what level the rendering should recurse.; options - a set of bit flags that will control the writeXML behavior.

writeXML

public Node writeXML(long options,
                     com.sun.java.util.collections.HashMap map,
XSLStylesheet xslt)

Specified by:: writeXML in interface XMLInterface

writeXML

public Node writeXML(int depthCount,
                     long options,
XSLStylesheet xslt)

Specified by:: writeXML in interface XMLInterface

readXML

public void readXML(Element elem,
                    int depthCount,
XSLStylesheet xslt)

Specified by:: readXML in interface XMLInterface

readXML

public void readXML(Element elem,
                    int depthCount)

Specified by:: readXML in interface XMLInterface

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Oracle9i Business Components for Java API Reference
Oracle9i Jdeveloper (9.0.4)
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oracle.jbo.server Class ViewRowSetImpl

mQRef

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mParamValues

VIEWLINK_MODE_UNINITIALIZED

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ViewRowSetImpl

getSyncLock

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close

closeRowSet

closeRowSetIterator

execute

execute

executeQuery

executeDetailQuery

createRowSetIterator

getRowSetIterators

findRowSetIterator

isExecuted

getQueryCollection

hasDefaultRowSetIterator

getDefaultRowSetIterator

addListener

removeListener

addManagementListener

removeManagementListener

getMasterViewRowSetIteratorsList

getMasterViewRowSetIterators

setMasterRowSetIterator

removeMasterRowSetIterator

isDirty

isNotifiedRefresh

makeRowCopy

insertRowAt

removeRowAt

removeRowFromCollectionAt

createAndInitRow

createRow

getRowCount

getEstimatedRangePageCount

getEstimatedRowCount

getMasterRowSetIterators

getApplicationModule

getViewObject

getRowSet

getRowSetIterator

setRangeSize

getRangeSize

getRangeStart

setRangeStart

scrollRange

scrollToRangePage

scrollRangeTo

getAllRowsInRange

getNextRangeSet

getPreviousRangeSet

enumerateRowsInRange

getFetchedRowCount

isRangeAtBottom

isRangeAtTop

insertRow

insertRowAtRangeIndex

getRowFromHandle

removeRowHandle

getRow

getRangeIndexOf

removeCurrentRow

removeCurrentRowFromCollection

setRowValidation

setCurrentRow

setCurrentRowAtRangeIndex

getCurrentRow

oracle.jbo.server
Class ViewRowSetImpl