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Oracle Fusion Middleware Java API Reference for Oracle TopLink 11g Release 1 (11.1.1) B32476-02 |
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java.lang.Object
oracle.toplink.queryframework.DatabaseQuery
oracle.toplink.queryframework.ReadQuery
oracle.toplink.queryframework.DataReadQuery
public class DataReadQuery
Purpose: Concrete class to perform read using raw SQL.
Responsibilities: Execute a selecting raw SQL string. This returns a Collection of the Records representing the result set.
Field Summary |
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Fields inherited from class oracle.toplink.queryframework.DatabaseQuery |
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CascadeAggregateDelete, CascadeAllParts, CascadeByMapping, CascadeDependentParts, CascadePrivateParts, NoCascading |
Constructor Summary | |
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DataReadQuery() Initialize the state of the query. |
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DataReadQuery(Call call) Initialize the query to use the specified call. |
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DataReadQuery(java.lang.String sqlString) Initialize the query to use the specified SQL string. |
Method Summary | |
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oracle.toplink.internal.queryframework.ContainerPolicy |
getContainerPolicy() Return the query's ContainerPolicy. |
boolean |
isDataReadQuery() Return if this is a data read query. |
void |
setContainerPolicy(oracle.toplink.internal.queryframework.ContainerPolicy containerPolicy) Set the container policy. |
void |
useCollectionClass(java.lang.Class concreteClass) Configure the query to use an instance of the specified container class to hold the target objects. |
void |
useCursoredStream() Use a CursoredStream as the result collection. |
void |
useCursoredStream(int initialReadSize, int pageSize) Use a CursoredStream as the result collection. |
void |
useCursoredStream(int initialReadSize, int pageSize, ValueReadQuery sizeQuery) Use a CursoredStream as the result collection. |
void |
useScrollableCursor() Use a ScrollableCursor as the result collection. |
void |
useScrollableCursor(int pageSize) Use a ScrollableCursor as the result collection. |
void |
useScrollableCursor(ScrollableCursorPolicy policy) Use a ScrollableCursor as the result collection. |
Methods inherited from class oracle.toplink.queryframework.ReadQuery |
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cacheQueryResults, clearQueryResults, clearQueryResults, doNotCacheQueryResults, getFetchSize, getFirstResult, getMaxRows, getQueryResultsCachePolicy, isReadQuery, setFetchSize, setFirstResult, setMaxRows, setQueryResultsCachePolicy, setShouldCacheQueryResults, shouldCacheQueryResults |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public DataReadQuery()
public DataReadQuery(java.lang.String sqlString)
public DataReadQuery(Call call)
Method Detail |
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public oracle.toplink.internal.queryframework.ContainerPolicy getContainerPolicy()
public boolean isDataReadQuery()
isDataReadQuery
in class DatabaseQuery
public void setContainerPolicy(oracle.toplink.internal.queryframework.ContainerPolicy containerPolicy)
public void useCollectionClass(java.lang.Class concreteClass)
public void useCursoredStream()
public void useCursoredStream(int initialReadSize, int pageSize)
initialReadSize
- the initial number of objects to readpageSize
- the number of objects to read when more objects are needed from the databasepublic void useCursoredStream(int initialReadSize, int pageSize, ValueReadQuery sizeQuery)
initialReadSize
- the initial number of objects to readpageSize
- the number of objects to read when more objects are needed from the databasesizeQuery
- a query that will return the size of the result set; this must be set if an expression is not used (i.e. custom SQL)public void useScrollableCursor()
public void useScrollableCursor(int pageSize)
pageSize
- the number of elements to be read into a the cursor when more elements are needed from the database.public void useScrollableCursor(ScrollableCursorPolicy policy)
policy
- the scrollable cursor policy allows for additional result set options. Example:
ScrollableCursorPolicy policy = new ScrollableCursorPolicy()
policy.setResultSetType(ScrollableCursorPolicy.TYPE_SCROLL_INSENSITIVE);
query.useScrollableCursor(policy);
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