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EclipseLink 1.1.0_ 1.1.0.r3634 API Reference | |||||||||
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java.lang.Objectorg.eclipse.persistence.internal.queries.ContainerPolicy
org.eclipse.persistence.queries.CursorPolicy
org.eclipse.persistence.queries.CursoredStreamPolicy
public class CursoredStreamPolicy
Purpose: Used to support cursored streams in a read query.
Responsibilities: Execute the cursored read and build the stream.
| Field Summary | |
|---|---|
protected int |
initialReadSize
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protected ValueReadQuery |
sizeQuery
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| Fields inherited from class org.eclipse.persistence.queries.CursorPolicy |
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pageSize, query |
| Fields inherited from class org.eclipse.persistence.internal.queries.ContainerPolicy |
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constructor, defaultContainerClass, elementDescriptor |
| Constructor Summary | |
|---|---|
CursoredStreamPolicy()
default constructor |
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CursoredStreamPolicy(ReadQuery query,
int pageSize)
set the initial read size to match the page size |
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CursoredStreamPolicy(ReadQuery query,
int initialReadSize,
int pageSize)
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CursoredStreamPolicy(ReadQuery query,
int initialReadSize,
int pageSize,
ValueReadQuery sizeQuery)
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| Method Summary | |
|---|---|
java.lang.Object |
execute()
INTERNAL: Execute the cursored select and build the stream. |
int |
getInitialReadSize()
Specifies the number of elements to be read initially into a cursored stream. |
ValueReadQuery |
getSizeQuery()
Return the query used to read the size. |
boolean |
hasSizeQuery()
INTERNAL: Return if a custom size query is defined. |
boolean |
isCursoredStreamPolicy()
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void |
prepare(DatabaseQuery query,
org.eclipse.persistence.internal.sessions.AbstractSession session)
INTERNAL: Prepare and validate. |
java.lang.Object |
remoteExecute()
INTERNAL: Execute the cursored select and build the stream. |
void |
setInitialReadSize(int initialReadSize)
Specifies the number of elements to be read initially into a cursored stream |
void |
setSizeQuery(ValueReadQuery sizeQuery)
Set the query used to read the size. |
| Methods inherited from class org.eclipse.persistence.queries.CursorPolicy |
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clone, getPageSize, getQuery, hasNext, isCursorPolicy, iteratorFor, next, overridesRead, setPageSize, setQuery, sizeFor, toStringInfo |
| Methods inherited from class org.eclipse.persistence.internal.queries.ContainerPolicy |
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addInto, addInto, addInto, addIntoWithOrder, addIntoWithOrder, addIntoWithOrder, buildContainerFromVector, buildDefaultPolicy, buildPolicyFor, buildPolicyFor, clear, clone, cloneFor, compareCollectionsForChange, compareKeys, concatenateContainers, containerInstance, containerInstance, contains, contains, containsKey, convertClassNamesToClasses, equals, getConstructor, getContainerClass, getContainerClassName, getDefaultContainerClass, getElementDescriptor, hasElementDescriptor, hasOrder, initializeConstructor, isCollectionPolicy, isDirectMapPolicy, isEmpty, isListPolicy, isMapPolicy, isScrollableCursorPolicy, isValidContainer, isValidContainerType, keyFrom, mergeCascadeParts, mergeChanges, next, prepareForExecution, recordAddToCollectionInChangeRecord, recordRemoveFromCollectionInChangeRecord, recordUpdateToCollectionInChangeRecord, removeAllElements, removeFrom, removeFrom, removeFrom, removeFromWithOrder, setConstructor, setContainerClass, setContainerClassName, setDefaultContainerClass, setElementDescriptor, setKeyName, setKeyName, toString, validateElementAndRehashIfRequired, vectorFor |
| Methods inherited from class java.lang.Object |
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finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
| Field Detail |
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protected int initialReadSize
protected ValueReadQuery sizeQuery
| Constructor Detail |
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public CursoredStreamPolicy()
public CursoredStreamPolicy(ReadQuery query,
int pageSize)
public CursoredStreamPolicy(ReadQuery query,
int initialReadSize,
int pageSize)
public CursoredStreamPolicy(ReadQuery query,
int initialReadSize,
int pageSize,
ValueReadQuery sizeQuery)
| Method Detail |
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public java.lang.Object execute()
execute in class CursorPolicypublic int getInitialReadSize()
public ValueReadQuery getSizeQuery()
public boolean hasSizeQuery()
public boolean isCursoredStreamPolicy()
isCursoredStreamPolicy in class org.eclipse.persistence.internal.queries.ContainerPolicy
public void prepare(DatabaseQuery query,
org.eclipse.persistence.internal.sessions.AbstractSession session)
throws QueryException
prepare in class CursorPolicyQueryExceptionpublic java.lang.Object remoteExecute()
remoteExecute in class CursorPolicypublic void setInitialReadSize(int initialReadSize)
public void setSizeQuery(ValueReadQuery sizeQuery)
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