org.hibernate.loader.plan.exec.internal

Class EntityLoadQueryDetails

java.lang.Object

org.hibernate.loader.plan.exec.internal.AbstractLoadQueryDetails

org.hibernate.loader.plan.exec.internal.EntityLoadQueryDetails

All Implemented Interfaces:

LoadQueryDetails

public class EntityLoadQueryDetails
extends AbstractLoadQueryDetails

Handles interpreting a LoadPlan (for loading of an entity) by:

• generating the SQL query to perform
• creating the readers needed to read the results from the SQL's ResultSet

Author:

Steve Ebersole, Gail Badner

Nested Class Summary

Nested classes/interfaces inherited from class org.hibernate.loader.plan.exec.internal.AbstractLoadQueryDetails

AbstractLoadQueryDetails.ReaderCollectorImpl

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	EntityLoadQueryDetails(EntityLoadQueryDetails initialEntityLoadQueryDetails, QueryBuildingParameters buildingParameters) Constructs an EntityLoadQueryDetails object from an initial object and new building parameters, with the guarantee that only batch size changed between the initial parameters and the new ones.
protected	EntityLoadQueryDetails(LoadPlan loadPlan, String[] keyColumnNames, AliasResolutionContextImpl aliasResolutionContext, EntityReturn rootReturn, QueryBuildingParameters buildingParameters, SessionFactoryImplementor factory) Constructs a EntityLoadQueryDetails object from the given inputs.

Method Summary

Modifier and Type	Method and Description
protected void	applyRootReturnFilterRestrictions(SelectStatementBuilder selectStatementBuilder)
protected void	applyRootReturnOrderByFragments(SelectStatementBuilder selectStatementBuilder)
protected void	applyRootReturnSelectFragments(SelectStatementBuilder selectStatementBuilder)
protected void	applyRootReturnTableFragments(SelectStatementBuilder select) Applies "table fragments" to the FROM-CLAUSE of the given SelectStatementBuilder for the given Loadable
protected void	applyRootReturnWhereJoinRestrictions(SelectStatementBuilder selectStatementBuilder)
protected ReaderCollector	getReaderCollector()
protected QuerySpace	getRootQuerySpace()
protected String	getRootTableAlias()
boolean	hasCollectionInitializers()
protected boolean	isSubselectLoadingEnabled(FetchStats fetchStats) Is subselect loading enabled?
protected boolean	shouldApplyRootReturnFilterBeforeKeyRestriction()
protected boolean	shouldUseOptionalEntityInstance()

Methods inherited from class org.hibernate.loader.plan.exec.internal.AbstractLoadQueryDetails

generate, getAliasResolutionContext, getKeyColumnNames, getLoadPlan, getQueryBuildingParameters, getQuerySpace, getResultSetProcessor, getRootReturn, getSessionFactory, getSqlStatement

Methods inherited from class java.lang.Object

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

Constructor Detail

EntityLoadQueryDetails

protected EntityLoadQueryDetails(LoadPlan loadPlan,
                                 String[] keyColumnNames,
                                 AliasResolutionContextImpl aliasResolutionContext,
                                 EntityReturn rootReturn,
                                 QueryBuildingParameters buildingParameters,
                                 SessionFactoryImplementor factory)

Constructs a EntityLoadQueryDetails object from the given inputs.

Parameters:

loadPlan - The load plan

keyColumnNames - The columns to load the entity by (the PK columns or some other unique set of columns)

buildingParameters - And influencers that would affect the generated SQL (mostly we are concerned with those that add additional joins here)

factory - The SessionFactory

EntityLoadQueryDetails

protected EntityLoadQueryDetails(EntityLoadQueryDetails initialEntityLoadQueryDetails,
                                 QueryBuildingParameters buildingParameters)

Constructs an EntityLoadQueryDetails object from an initial object and new building parameters, with the guarantee that only batch size changed between the initial parameters and the new ones.

Parameters:

initialEntityLoadQueryDetails - The initial object to be copied

buildingParameters - The new building parameters, with only the batch size being different from the parameters used in the initial object.

Method Detail

hasCollectionInitializers

public boolean hasCollectionInitializers()

applyRootReturnTableFragments

protected void applyRootReturnTableFragments(SelectStatementBuilder select)

Applies "table fragments" to the FROM-CLAUSE of the given SelectStatementBuilder for the given Loadable

Specified by:

applyRootReturnTableFragments in class AbstractLoadQueryDetails

Parameters:

select - The SELECT statement builder

See Also:

OuterJoinLoadable.fromTableFragment(java.lang.String), Joinable.fromJoinFragment(java.lang.String, boolean, boolean)

applyRootReturnFilterRestrictions

protected void applyRootReturnFilterRestrictions(SelectStatementBuilder selectStatementBuilder)

Specified by:

applyRootReturnFilterRestrictions in class AbstractLoadQueryDetails

applyRootReturnWhereJoinRestrictions

protected void applyRootReturnWhereJoinRestrictions(SelectStatementBuilder selectStatementBuilder)

Specified by:

applyRootReturnWhereJoinRestrictions in class AbstractLoadQueryDetails

applyRootReturnOrderByFragments

protected void applyRootReturnOrderByFragments(SelectStatementBuilder selectStatementBuilder)

Specified by:

applyRootReturnOrderByFragments in class AbstractLoadQueryDetails

isSubselectLoadingEnabled

protected boolean isSubselectLoadingEnabled(FetchStats fetchStats)

Description copied from class: AbstractLoadQueryDetails

Is subselect loading enabled?

Specified by:

isSubselectLoadingEnabled in class AbstractLoadQueryDetails

Parameters:

fetchStats - the fetch stats; may be null

Returns:

true if subselect loading is enabled; false otherwise.

shouldUseOptionalEntityInstance

protected boolean shouldUseOptionalEntityInstance()

Specified by:

shouldUseOptionalEntityInstance in class AbstractLoadQueryDetails

getReaderCollector

protected ReaderCollector getReaderCollector()

Specified by:

getReaderCollector in class AbstractLoadQueryDetails

getRootQuerySpace

protected QuerySpace getRootQuerySpace()

Specified by:

getRootQuerySpace in class AbstractLoadQueryDetails

getRootTableAlias

protected String getRootTableAlias()

Specified by:

getRootTableAlias in class AbstractLoadQueryDetails

shouldApplyRootReturnFilterBeforeKeyRestriction

protected boolean shouldApplyRootReturnFilterBeforeKeyRestriction()

Specified by:

shouldApplyRootReturnFilterBeforeKeyRestriction in class AbstractLoadQueryDetails

applyRootReturnSelectFragments

protected void applyRootReturnSelectFragments(SelectStatementBuilder selectStatementBuilder)

Specified by:

applyRootReturnSelectFragments in class AbstractLoadQueryDetails