oracle.jbo.server
Class QueryCollection

java.lang.Object
  |
  +--com.sun.java.util.collections.AbstractCollection
        |
        +--com.sun.java.util.collections.AbstractList
              |
              +--oracle.jbo.server.QueryCollection

All Implemented Interfaces:

com.sun.java.util.collections.Collection, com.sun.java.util.collections.List, oracle.jbo.pcoll.PCollListener

public class QueryCollection

extends com.sun.java.util.collections.AbstractList

implements oracle.jbo.pcoll.PCollListener

The QueryCollection represents the result of executing a ViewRow. The QueryCollection object will use the meta-data provided to "pull-apart" the rows of data that come back and locate/construct the appropriate Entity row definition.

In essense, it is a collection of ViewRow's.

Version:

INTERNAL

Field Summary

Fields inherited from class com.sun.java.util.collections.AbstractList

modCount

Method Summary

void	add(int index, java.lang.Object row) Add a row to the QueryCollection at the specified index.
void	afterActivateElement(oracle.jbo.pcoll.PCollection pcoll, oracle.jbo.pcoll.PCollPersistable elem)
protected void	afterRemove(EntityImpl entity) Removes the ViewRow from cache and collection
void	beforePassivateElement(oracle.jbo.pcoll.PCollection pcoll, oracle.jbo.pcoll.PCollPersistable elem)
boolean	equals(java.lang.Object qc)
protected void	finalize()
java.lang.Object	get(int index) Return the data at the index.
protected int[]	getIndexes(EntityImpl row)
java.lang.String	getName(java.lang.Object accessKey)
long	getNextObjId()
RowFilter	getRowFilter()
protected Row[]	getRows(EntityImpl row)
protected Row[]	getRows(Key ky)
oracle.jbo.server.ViewRowStorage	getRowStorageFromId(long id)
int	hashCode()
int	indexOf(java.lang.Object row)
void	printActiveObjsTab(java.io.PrintWriter pw)
void	printColl(java.io.PrintWriter pw, int printFlag)
void	printRUChain(java.io.PrintWriter pw)
java.lang.Object	remove(int index) Remove a row from the QueryCollection at the specified index.
java.lang.Object	removeFromCollection(int index)
protected void	removeReference(ViewRowImpl row, EntityImpl entity) Remove entity references, i.e, set references to null
java.lang.Object	set(int index, java.lang.Object element) Set the data at the index.
int	size() The size of the Collection.
protected void	updateReference(ViewRowImpl row, EntityImpl entity, int entityIndex) Set reference entity based on foreign keys

Methods inherited from class com.sun.java.util.collections.AbstractList

add, addAll, clear, iterator, lastIndexOf, listIterator, listIterator, removeRange, subList

Methods inherited from class com.sun.java.util.collections.AbstractCollection

addAll, contains, containsAll, isEmpty, remove, removeAll, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

clone, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.sun.java.util.collections.List

addAll, contains, containsAll, isEmpty, remove, removeAll, retainAll, toArray, toArray

Method Detail

beforePassivateElement

public void beforePassivateElement(oracle.jbo.pcoll.PCollection pcoll,
                                   oracle.jbo.pcoll.PCollPersistable elem)

Specified by:

beforePassivateElement in interface oracle.jbo.pcoll.PCollListener

afterActivateElement

public void afterActivateElement(oracle.jbo.pcoll.PCollection pcoll,
                                 oracle.jbo.pcoll.PCollPersistable elem)

Specified by:

afterActivateElement in interface oracle.jbo.pcoll.PCollListener

getNextObjId

public long getNextObjId()

Specified by:

getNextObjId in interface oracle.jbo.pcoll.PCollListener

size

public int size()

The size of the Collection. Implementation of the Collection interface.

--Calling this method will result in the entire Collection being --brought into memory (in order to give an accurate count of the --rows in it). THIS HAS CHANGED. THE NEW BEHAVIOR IS : We're currently returning only the fetched size of the query collection We could return the correct size, if atleast one row is fetched, however we should NOT return correct size if no rows are fetched (and thereby getting all rows in memory as AbstractList.hash() performs hasNext() that performs size() leading to fetching all row at the very beginning of iteration). - modified during move to AbstractList from Vector.

Specified by:

size in interface com.sun.java.util.collections.List

Specified by:

size in class com.sun.java.util.collections.AbstractCollection

Returns:

the number of rows in the collection.

get

public java.lang.Object get(int index)

Return the data at the index. Implementation of the Collection interface.

Specified by:

get in interface com.sun.java.util.collections.List

Specified by:

get in class com.sun.java.util.collections.AbstractList

Parameters:

index - the row index to use.

Returns:

the data at that row.

getRowStorageFromId

public oracle.jbo.server.ViewRowStorage getRowStorageFromId(long id)

set

public java.lang.Object set(int index,
                            java.lang.Object element)

Set the data at the index. Implementation of the Collection interface.

Specified by:

set in interface com.sun.java.util.collections.List

Overrides:

set in class com.sun.java.util.collections.AbstractList

Parameters:

index - the row index to use.

element - the value to put there.

add

public void add(int index,
                java.lang.Object row)

Add a row to the QueryCollection at the specified index.

Specified by:

add in interface com.sun.java.util.collections.List

Overrides:

add in class com.sun.java.util.collections.AbstractList

Parameters:

index - the insertion index or -ve to insert at the end.

row - a ViewRow row to be inserted into the QueryCollection.

remove

public java.lang.Object remove(int index)

Remove a row from the QueryCollection at the specified index.

Specified by:

remove in interface com.sun.java.util.collections.List

Overrides:

remove in class com.sun.java.util.collections.AbstractList

Parameters:

index - the deletion index.

Returns:

the row removed.

removeFromCollection

public java.lang.Object removeFromCollection(int index)

getIndexes

protected int[] getIndexes(EntityImpl row)

Parameters:

row - to locate view rows which reference it.

Returns:

the row indexes of view rows

indexOf

public int indexOf(java.lang.Object row)

Specified by:

indexOf in interface com.sun.java.util.collections.List

Overrides:

indexOf in class com.sun.java.util.collections.AbstractList

afterRemove

protected void afterRemove(EntityImpl entity)

Removes the ViewRow from cache and collection

getRows

protected Row[] getRows(EntityImpl row)

Returns:

a list for ViewRows that reference the entity

getRows

protected Row[] getRows(Key ky)

removeReference

protected void removeReference(ViewRowImpl row,
EntityImpl entity)

Remove entity references, i.e, set references to null

updateReference

protected void updateReference(ViewRowImpl row,
EntityImpl entity,
                               int entityIndex)

Set reference entity based on foreign keys

getRowFilter

public RowFilter getRowFilter()

getName

public java.lang.String getName(java.lang.Object accessKey)

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)

finalize

protected void finalize()

Overrides:

finalize in class java.lang.Object

hashCode

public int hashCode()

Specified by:

hashCode in interface com.sun.java.util.collections.List

Overrides:

hashCode in class com.sun.java.util.collections.AbstractList

equals

public boolean equals(java.lang.Object qc)

Specified by:

equals in interface com.sun.java.util.collections.List

Overrides:

equals in class com.sun.java.util.collections.AbstractList