org.eclipse.persistence.queries
Class ObjectBuildingQuery

java.lang.Object
  org.eclipse.persistence.queries.DatabaseQuery
      org.eclipse.persistence.queries.ReadQuery
          org.eclipse.persistence.queries.ObjectBuildingQuery

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable

Direct Known Subclasses:

ObjectLevelReadQuery, ResultSetMappingQuery

public abstract class ObjectBuildingQuery
extends ReadQuery

Purpose: Abstract class for all read queries that build objects and potentially manipulate the TopLink cache.

Description: Contains common behavior for all read queries building objects.

See Also:

Serialized Form

Author:

Gordon Yorke

Since:

TopLink Essentials

Field Summary

static short	DEFAULT_LOCK_MODE
protected long	executionTime Used to set the read time on objects that use this query.
protected boolean	isCacheCheckComplete was a check early return completed
static short	LOCK
static short	LOCK_NOWAIT
static java.lang.String	LOCK_RESULT_PROPERTY INTERNAL: This is the key for accessing unregistered and locked result in the query's properties.
protected org.eclipse.persistence.internal.expressions.ForUpdateClause	lockingClause Used for pessimistic locking.
static short	NO_LOCK
protected java.util.Map<java.lang.Object,org.eclipse.persistence.internal.identitymaps.CacheKey>	prefetchedCacheKeys
protected java.lang.Class	referenceClass The class of the target objects to be read from the database.
protected java.lang.String	referenceClassName
protected java.lang.Boolean	requiresDeferredLocks When reading across relationships, queries may be set to acquire deferred locks This is used to ensure any Eagerly fetched object that is the target of a relationship with an object the acquires deferred locks behaves the same as its owner
protected boolean	shouldBuildNullForNullPk INTERNAL: If primary key is null ObjectBuilder.buildObject returns null in case this flag is set to true (instead of throwing exception).
protected boolean	shouldRefreshIdentityMapResult Allows for the resulting objects to be refresh with the data from the database.
protected boolean	shouldRefreshRemoteIdentityMapResult
protected boolean	shouldRegisterResultsInUnitOfWork INTERNAL: for bug 2612601 allow ability not to register results in UOW.
protected boolean	shouldUseExclusiveConnection Added for Exclusive Connection (VPD) support see accessor for information
protected boolean	wasDefaultLockMode PERF: Store if the query originally used the default lock mode.

Fields inherited from class org.eclipse.persistence.queries.ReadQuery

fetchSize, firstResult, maxRows, queryId, queryResultCachingPolicy, temporaryCachedQueryResults

Fields inherited from class org.eclipse.persistence.queries.DatabaseQuery

accessors, allowNativeSQLQuery, argumentFields, arguments, argumentTypeNames, argumentTypes, argumentValues, BATCH_FETCH_PROPERTY, CascadeAggregateDelete, CascadeAllParts, CascadeByMapping, CascadeDependentParts, cascadePolicy, CascadePrivateParts, descriptor, doNotRedirect, executionSession, flushOnExecute, hintString, isCustomQueryUsed, isExecutionClone, isNativeConnectionRequired, isPrepared, isUserDefined, isUserDefinedSQLCall, monitorName, name, NoCascading, nullableArguments, parameterDelimiter, partitioningPolicy, properties, queryMechanism, queryTimeout, redirector, session, sessionName, shouldBindAllParameters, shouldCacheStatement, shouldCloneCall, shouldMaintainCache, shouldPrepare, shouldRetrieveBypassCache, shouldStoreBypassCache, shouldUseWrapperPolicy, shouldValidateUpdateCallCacheUse, sourceMapping, translationRow

Constructor Summary

ObjectBuildingQuery()
INTERNAL: Initialize the state of the query

Method Summary

java.lang.Object	clone() INTERNAL: Clone the query
protected void	clonedQueryExecutionComplete(DatabaseQuery query, org.eclipse.persistence.internal.sessions.AbstractSession session) INTERNAL Used to give the subclasses opportunity to copy aspects of the cloned query to the original query.
void	convertClassNamesToClasses(java.lang.ClassLoader classLoader) INTERNAL: Convert all the class-name-based settings in this query to actual class-based settings.
void	copyFromQuery(DatabaseQuery query) INTERNAL: Copy all setting from the query.
java.lang.Object	deepClone() INTERNAL: Clone the query, including its selection criteria.
void	dontRefreshIdentityMapResult() PUBLIC: When unset means perform read normally and dont do refresh.
void	dontRefreshRemoteIdentityMapResult() PUBLIC: When unset means perform read normally and dont do refresh.
java.util.List	getDataResults() INTERNAL: Return all of the rows fetched by the query, used for 1-m joining.
org.eclipse.persistence.internal.queries.EntityFetchGroup	getEntityFetchGroup() INTERNAL: Returns EntityFetchGroup that will be applied to objects returned by the query.
FetchGroup	getExecutionFetchGroup() INTERNAL: Returns FetchGroup that will be applied to the query.
long	getExecutionTime() INTERNAL: Return the time this query actually went to the database
short	getLockMode() PUBLIC: Return the current locking mode.
java.util.Map<java.lang.Object,org.eclipse.persistence.internal.identitymaps.CacheKey>	getPrefetchedCacheKeys()
protected java.lang.Object	getQueryPrimaryKey() INTERNAL: Return the primary key stored in this query if there is one This is overridden by subclasses that actually hold a primary key
java.lang.Class	getReferenceClass() PUBLIC: Return the reference class of the query.
java.lang.String	getReferenceClassName() INTERNAL: Return the reference class of the query.
boolean	hasExecutionFetchGroup() INTERNAL: Indicates whether a FetchGroup will be applied to the query.
boolean	hasPartialAttributeExpressions() INTERNAL: Return if partial attributes.
boolean	isAttributeJoined(ClassDescriptor mappingDescriptor, java.lang.String attributeName) INTERNAL: Return if the attribute is specified for joining.
boolean	isCacheCheckComplete() INTERNAL: Returns true if an early return cache check was completed
boolean	isClonePessimisticLocked(java.lang.Object clone, org.eclipse.persistence.internal.sessions.UnitOfWorkImpl uow) INTERNAL: Helper method that checks if clone has been locked with uow.
boolean	isDefaultLock() INTERNAL: Helper method to determine the default mode.
boolean	isLockQuery() PUBLIC: Answers if the query lock mode is known to be LOCK or LOCK_NOWAIT.
boolean	isObjectBuildingQuery() PUBLIC: Return if this is an object building query.
boolean	isRegisteringResults() INTERNAL: Answers if we are executing through a UnitOfWork and registering results.
void	postRegisterIndividualResult(java.lang.Object clone, java.lang.Object original, java.lang.Object primaryKey, org.eclipse.persistence.internal.sessions.UnitOfWorkImpl unitOfWork, org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager, ClassDescriptor concreteDescriptor) Post process the object once it is registered in the unit of work.
protected void	prepareCustomQuery(DatabaseQuery customQuery) INTERNAL: Set the properties needed to be cascaded into the custom query including the translation row.
void	prepareFromQuery(DatabaseQuery query) INTERNAL: Prepare the query from the prepared query.
void	recordCloneForPessimisticLocking(java.lang.Object clone, org.eclipse.persistence.internal.sessions.UnitOfWorkImpl uow) INTERNAL: Helper method that records clone with uow if query is pessimistic locking.
void	refreshIdentityMapResult() PUBLIC: Refresh the attributes of the object(s) resulting from the query.
void	refreshRemoteIdentityMapResult() PUBLIC: Refresh the attributes of the object(s) resulting from the query.
java.lang.Object	registerIndividualResult(java.lang.Object result, java.lang.Object primaryKey, org.eclipse.persistence.internal.sessions.UnitOfWorkImpl unitOfWork, org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager, ClassDescriptor concreteDescriptor) INTERNAL: Constructs the final (registered) object for every individual object queried via a UnitOfWork.
boolean	requiresDeferredLocks() INTERNAL: When reading across relationships, queries may be set to acquire deferred locks This is used to ensure any Eagerly fetched object that is the target of a relationship with an object the acquires deferred locks behaves the same as its owner
void	setExecutionTime(long executionTime) INTERNAL: Set the the time this query went to the database.
void	setLockMode(short lockMode) PUBLIC: Sets whether this is a pessimistically locking query.
void	setPrefetchedCacheKeys(java.util.Map<java.lang.Object,org.eclipse.persistence.internal.identitymaps.CacheKey> prefetchedCacheKeys)
void	setReferenceClass(java.lang.Class aClass) REQUIRED: Set the reference class for the query.
void	setReferenceClassName(java.lang.String aClass) INTERNAL: Set the reference class for the query.
void	setRequiresDeferredLocks(boolean cascadeDeferredLocks) INTERNAL: When reading across relationships, queries may be set to acquire deferred locks This is used to ensure any Eagerly fetched object that is the target of a relationship with an object the acquires deferred locks behaves the same as its owner
void	setShouldBuildNullForNullPk(boolean shouldBuildNullForNullPk) INTERNAL: If primary key is null ObjectBuilder.buildObject returns null in case this flag is set to true (instead of throwing exception).
void	setShouldRefreshIdentityMapResult(boolean shouldRefreshIdentityMapResult) PUBLIC: Set if the attributes of the object(s) resulting from the query should be refreshed.
void	setShouldRefreshRemoteIdentityMapResult(boolean shouldRefreshIdentityMapResult) PUBLIC: Set if the attributes of the object(s) resulting from the query should be refreshed.
void	setShouldRegisterResultsInUnitOfWork(boolean shouldRegisterResultsInUnitOfWork) INTERNAL: Set to false to have queries conform to a UnitOfWork without registering any additional objects not already in that UnitOfWork.
void	setShouldUseExclusiveConnection(boolean shouldUseExclusiveConnection) ADVANCED: If the user has isolated data and specified that the client session should use an exclusive connection then by setting this condition to true EclipseLink will ensure that the query is executed through the exclusive connection.
protected void	setWasDefaultLockMode(boolean wasDefaultLockMode) INTERNAL: Set if this query originally used the default lock mode.
boolean	shouldBuildNullForNullPk() INTERNAL: If primary key is null ObjectBuilder.buildObject returns null in case this flag is set to true (instead of throwing exception).
boolean	shouldReadAllMappings() INTERNAL: Return if this is a full object query, not partial nor fetch group.
boolean	shouldReadMapping(DatabaseMapping mapping) INTERNAL: Check if the mapping is part of the partial attributes.
boolean	shouldRefreshIdentityMapResult() PUBLIC: Set to a boolean.
boolean	shouldRefreshRemoteIdentityMapResult() PUBLIC: Set to a boolean.
boolean	shouldRegisterResultsInUnitOfWork() INTERNAL: Allows one to do conforming in a UnitOfWork without registering.
boolean	shouldUseExclusiveConnection() ADVANCED: If the user has isolated data and specified that the client session should use an exclusive connection then by setting this condition to true EclipseLink will ensure that the query is executed through the exclusive connection.
protected boolean	wasDefaultLockMode() INTERNAL: Return if this query originally used the default lock mode.

Methods inherited from class org.eclipse.persistence.queries.ReadQuery

buildObject, cacheQueryResults, cacheResult, clearQueryResults, doNotCacheQueryResults, getFetchSize, getFirstResult, getMaxRows, getQueryId, getQueryResults, getQueryResults, getQueryResults, getQueryResultsCachePolicy, getTemporaryCachedQueryResults, isDefaultPropertiesQuery, isReadQuery, prepare, prepareForExecution, remoteExecute, setFetchSize, setFirstResult, setMaxRows, setQueryId, setQueryResults, setQueryResultsCachePolicy, setTemporaryCachedQueryResults, shouldCacheQueryResults

Methods inherited from class org.eclipse.persistence.queries.DatabaseQuery

addArgument, addArgument, addArgument, addArgument, addArgumentByTypeName, addArgumentValue, addArgumentValues, addCall, addStatement, bindAllParameters, buildArgumentFields, buildSelectionCriteria, cacheStatement, cascadeAllParts, cascadeByMapping, cascadeOnlyDependentParts, cascadePrivateParts, checkDescriptor, checkEarlyReturn, checkForCustomQuery, checkPrepare, checkPrepare, dontBindAllParameters, dontCacheStatement, dontCascadeParts, dontMaintainCache, execute, executeDatabaseQuery, executeInUnitOfWork, extractRemoteResult, getAccessor, getAccessors, getArguments, getArgumentTypeNames, getArgumentTypes, getArgumentValues, getBatchObjects, getCall, getCascadePolicy, getDatasourceCall, getDatasourceCalls, getDefaultRedirector, getDescriptor, getDomainClassNounName, getDoNotRedirect, getEJBQLString, getExecutionSession, getFlushOnExecute, getHintString, getJPQLString, getMonitorName, getName, getNullableArguments, getParameterDelimiter, getParameterDelimiterChar, getPartitioningPolicy, getProperties, getProperty, getQueryMechanism, getQueryNounName, getQueryTimeout, getRedirector, getRedirectorForQuery, getSelectionCriteria, getSensorName, getSession, getSessionName, getShouldBindAllParameters, getSourceMapping, getSQLStatement, getSQLString, getSQLStrings, getTranslatedSQLString, getTranslatedSQLStrings, getTranslationRow, hasAccessor, hasArguments, hasNullableArguments, hasProperties, hasQueryMechanism, hasSessionName, ignoreBindAllParameters, ignoreCacheStatement, isCallQuery, isCascadeOfAggregateDelete, isCustomQueryUsed, isCustomSelectionQuery, isDataModifyQuery, isDataReadQuery, isDeleteAllQuery, isDeleteObjectQuery, isDirectReadQuery, isExecutionClone, isExpressionQuery, isInsertObjectQuery, isJPQLCallQuery, isModifyAllQuery, isModifyQuery, isNativeConnectionRequired, isObjectLevelModifyQuery, isObjectLevelReadQuery, isPrepared, isReadAllQuery, isReadObjectQuery, isReportQuery, isSQLCallQuery, isUpdateAllQuery, isUpdateObjectQuery, isUserDefined, isUserDefinedSQLCall, isValueReadQuery, isWriteObjectQuery, maintainCache, prepareCall, prepareForRemoteExecution, redirectQuery, remoteExecute, removeProperty, replaceValueHoldersIn, resetMonitorName, retrieveBypassCache, rowFromArguments, setAccessor, setAccessors, setAllowNativeSQLQuery, setArguments, setArgumentTypeNames, setArgumentTypes, setArgumentValues, setBatchObjects, setCall, setCascadePolicy, setDatasourceCall, setDescriptor, setDoNotRedirect, setEJBQLString, setExecutionSession, setFlushOnExecute, setHintString, setIsCustomQueryUsed, setIsExecutionClone, setIsNativeConnectionRequired, setIsPrepared, setIsUserDefined, setIsUserDefinedSQLCall, setJPQLString, setName, setNullableArguments, setParameterDelimiter, setPartitioningPolicy, setProperties, setProperty, setQueryMechanism, setQueryTimeout, setRedirector, setSelectionCriteria, setSession, setSessionName, setShouldBindAllParameters, setShouldBindAllParameters, setShouldCacheStatement, setShouldMaintainCache, setShouldPrepare, setShouldRetrieveBypassCache, setShouldStoreBypassCache, setShouldUseWrapperPolicy, setShouldValidateUpdateCallCacheUse, setSourceMapping, setSQLStatement, setSQLString, setTranslationRow, shouldAllowNativeSQLQuery, shouldBindAllParameters, shouldCacheStatement, shouldCascadeAllParts, shouldCascadeByMapping, shouldCascadeOnlyDependentParts, shouldCascadeParts, shouldCascadePrivateParts, shouldCloneCall, shouldIgnoreBindAllParameters, shouldIgnoreCacheStatement, shouldMaintainCache, shouldPrepare, shouldPrepare, shouldRetrieveBypassCache, shouldStoreBypassCache, shouldUseWrapperPolicy, shouldValidateUpdateCallCacheUse, storeBypassCache, toString

Methods inherited from class java.lang.Object

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

Field Detail

referenceClass

protected java.lang.Class referenceClass

The class of the target objects to be read from the database.

referenceClassName

protected java.lang.String referenceClassName

shouldRefreshIdentityMapResult

protected boolean shouldRefreshIdentityMapResult

Allows for the resulting objects to be refresh with the data from the database.

shouldRefreshRemoteIdentityMapResult

protected boolean shouldRefreshRemoteIdentityMapResult

shouldRegisterResultsInUnitOfWork

protected boolean shouldRegisterResultsInUnitOfWork

INTERNAL: for bug 2612601 allow ability not to register results in UOW.

lockingClause

protected org.eclipse.persistence.internal.expressions.ForUpdateClause lockingClause

Used for pessimistic locking.

NO_LOCK

public static final short NO_LOCK

See Also:

Constant Field Values

LOCK

public static final short LOCK

See Also:

Constant Field Values

LOCK_NOWAIT

public static final short LOCK_NOWAIT

See Also:

Constant Field Values

DEFAULT_LOCK_MODE

public static final short DEFAULT_LOCK_MODE

See Also:

Constant Field Values

executionTime

protected long executionTime

Used to set the read time on objects that use this query. Should be set to the time the query returned from the database.

shouldUseExclusiveConnection

protected boolean shouldUseExclusiveConnection

Added for Exclusive Connection (VPD) support see accessor for information

LOCK_RESULT_PROPERTY

public static final java.lang.String LOCK_RESULT_PROPERTY

INTERNAL: This is the key for accessing unregistered and locked result in the query's properties. The uow and QueryBaseValueHolder use this property to record and to retrieve the result respectively.

See Also:

Constant Field Values

wasDefaultLockMode

protected boolean wasDefaultLockMode

PERF: Store if the query originally used the default lock mode.

shouldBuildNullForNullPk

protected boolean shouldBuildNullForNullPk

INTERNAL: If primary key is null ObjectBuilder.buildObject returns null in case this flag is set to true (instead of throwing exception).

requiresDeferredLocks

protected java.lang.Boolean requiresDeferredLocks

When reading across relationships, queries may be set to acquire deferred locks This is used to ensure any Eagerly fetched object that is the target of a relationship with an object the acquires deferred locks behaves the same as its owner

isCacheCheckComplete

protected boolean isCacheCheckComplete

was a check early return completed

prefetchedCacheKeys

protected java.util.Map<java.lang.Object,org.eclipse.persistence.internal.identitymaps.CacheKey> prefetchedCacheKeys

Constructor Detail

ObjectBuildingQuery

public ObjectBuildingQuery()

INTERNAL: Initialize the state of the query

Method Detail

clone

public java.lang.Object clone()

INTERNAL: Clone the query

Overrides:

clone in class DatabaseQuery

clonedQueryExecutionComplete

protected void clonedQueryExecutionComplete(DatabaseQuery query,
                                            org.eclipse.persistence.internal.sessions.AbstractSession session)

INTERNAL Used to give the subclasses opportunity to copy aspects of the cloned query to the original query.

Overrides:

clonedQueryExecutionComplete in class ReadQuery

convertClassNamesToClasses

public void convertClassNamesToClasses(java.lang.ClassLoader classLoader)

INTERNAL: Convert all the class-name-based settings in this query to actual class-based settings. This method is used when converting a project that has been built with class names to a project with classes.

Overrides:

convertClassNamesToClasses in class DatabaseQuery

Parameters:

classLoader -

wasDefaultLockMode

protected boolean wasDefaultLockMode()

INTERNAL: Return if this query originally used the default lock mode.

setWasDefaultLockMode

protected void setWasDefaultLockMode(boolean wasDefaultLockMode)

INTERNAL: Set if this query originally used the default lock mode.

deepClone

public java.lang.Object deepClone()

INTERNAL: Clone the query, including its selection criteria.

Normally selection criteria are not cloned here as they are cloned later on during prepare.

copyFromQuery

public void copyFromQuery(DatabaseQuery query)

INTERNAL: Copy all setting from the query. This is used to morph queries from one type to the other. By default this calls prepareFromQuery, but additional properties may be required to be copied as prepareFromQuery only copies properties that affect the SQL.

Overrides:

copyFromQuery in class ReadQuery

prepareCustomQuery

protected void prepareCustomQuery(DatabaseQuery customQuery)

INTERNAL: Set the properties needed to be cascaded into the custom query including the translation row. This is used only for primary key queries, as the descriptor query manager stores a predefined query for this query to avoid having to re-prepare and allow for customization.

Overrides:

prepareCustomQuery in class DatabaseQuery

prepareFromQuery

public void prepareFromQuery(DatabaseQuery query)

INTERNAL: Prepare the query from the prepared query. This allows a dynamic query to prepare itself directly from a prepared query instance. This is used in the EJBQL parse cache to allow preparsed queries to be used to prepare dynamic queries. This only copies over properties that are configured through EJBQL.

Overrides:

prepareFromQuery in class DatabaseQuery

dontRefreshIdentityMapResult

public void dontRefreshIdentityMapResult()

PUBLIC: When unset means perform read normally and dont do refresh.

dontRefreshRemoteIdentityMapResult

public void dontRefreshRemoteIdentityMapResult()

PUBLIC: When unset means perform read normally and dont do refresh.

hasExecutionFetchGroup

public boolean hasExecutionFetchGroup()

INTERNAL: Indicates whether a FetchGroup will be applied to the query.

getExecutionFetchGroup

public FetchGroup getExecutionFetchGroup()

INTERNAL: Returns FetchGroup that will be applied to the query. Note that the returned fetchGroup may be updated during preProcess.

getEntityFetchGroup

public org.eclipse.persistence.internal.queries.EntityFetchGroup getEntityFetchGroup()

INTERNAL: Returns EntityFetchGroup that will be applied to objects returned by the query. Should not be called before preProcess - may not yet exist.

getLockMode

public short getLockMode()

PUBLIC: Return the current locking mode.

getDataResults

public java.util.List getDataResults()

INTERNAL: Return all of the rows fetched by the query, used for 1-m joining.

getExecutionTime

public long getExecutionTime()

INTERNAL: Return the time this query actually went to the database

getPrefetchedCacheKeys

public java.util.Map<java.lang.Object,org.eclipse.persistence.internal.identitymaps.CacheKey> getPrefetchedCacheKeys()

getQueryPrimaryKey

protected java.lang.Object getQueryPrimaryKey()

INTERNAL: Return the primary key stored in this query if there is one This is overridden by subclasses that actually hold a primary key

Returns:

See Also:

ReadObjectQuery

getReferenceClass

public java.lang.Class getReferenceClass()

PUBLIC: Return the reference class of the query.

Overrides:

getReferenceClass in class DatabaseQuery

getReferenceClassName

public java.lang.String getReferenceClassName()

INTERNAL: Return the reference class of the query.

Overrides:

getReferenceClassName in class DatabaseQuery

hasPartialAttributeExpressions

public boolean hasPartialAttributeExpressions()

INTERNAL: Return if partial attributes.

isLockQuery

public boolean isLockQuery()

PUBLIC: Answers if the query lock mode is known to be LOCK or LOCK_NOWAIT. In the case of DEFAULT_LOCK_MODE and the query reference class being a CMP entity bean, at execution time LOCK, LOCK_NOWAIT, or NO_LOCK will be decided.

If a single joined attribute was configured for pessimistic locking then this will return true (after first execution) as the SQL contained a FOR UPDATE OF clause.

isObjectBuildingQuery

public boolean isObjectBuildingQuery()

PUBLIC: Return if this is an object building query.

Overrides:

isObjectBuildingQuery in class DatabaseQuery

isRegisteringResults

public boolean isRegisteringResults()

INTERNAL: Answers if we are executing through a UnitOfWork and registering results. This is only ever false if using the conforming without registering feature.

refreshIdentityMapResult

public void refreshIdentityMapResult()

PUBLIC: Refresh the attributes of the object(s) resulting from the query. If cascading is used the private parts of the objects will also be refreshed.

refreshRemoteIdentityMapResult

public void refreshRemoteIdentityMapResult()

PUBLIC: Refresh the attributes of the object(s) resulting from the query. If cascading is used the private parts of the objects will also be refreshed.

registerIndividualResult

public java.lang.Object registerIndividualResult(java.lang.Object result,
                                                 java.lang.Object primaryKey,
                                                 org.eclipse.persistence.internal.sessions.UnitOfWorkImpl unitOfWork,
                                                 org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager,
                                                 ClassDescriptor concreteDescriptor)

INTERNAL: Constructs the final (registered) object for every individual object queried via a UnitOfWork.

Called for every object in a read all, the object in a read object, and every time the next or previous row is retrieved from a cursor.

The (conform) without registering feature is implemented here, and may return an original non UnitOfWork registered result.

Pessimistically locked objects are tracked here.

Returns:

a refreshed UnitOfWork queried object, unwrapped.

postRegisterIndividualResult

public void postRegisterIndividualResult(java.lang.Object clone,
                                         java.lang.Object original,
                                         java.lang.Object primaryKey,
                                         org.eclipse.persistence.internal.sessions.UnitOfWorkImpl unitOfWork,
                                         org.eclipse.persistence.internal.queries.JoinedAttributeManager joinManager,
                                         ClassDescriptor concreteDescriptor)

Post process the object once it is registered in the unit of work.

requiresDeferredLocks

public boolean requiresDeferredLocks()

INTERNAL: When reading across relationships, queries may be set to acquire deferred locks This is used to ensure any Eagerly fetched object that is the target of a relationship with an object the acquires deferred locks behaves the same as its owner

setExecutionTime

public void setExecutionTime(long executionTime)

INTERNAL: Set the the time this query went to the database.

setLockMode

public void setLockMode(short lockMode)

PUBLIC: Sets whether this is a pessimistically locking query.

• ObjectBuildingQuery.LOCK: SELECT .... FOR UPDATE issued.
• ObjectBuildingQuery.LOCK_NOWAIT: SELECT .... FOR UPDATE NO WAIT issued.
• ObjectBuildingQuery.NO_LOCK: no pessimistic locking.
• ObjectBuildingQuery.DEFAULT_LOCK_MODE (default) and you have a CMP descriptor: fine grained locking will occur.

Fine Grained Locking: On execution the reference class and those of all joined attributes will be checked. If any of these have a PessimisticLockingPolicy set on their descriptor, they will be locked in a SELECT ... FOR UPDATE OF ... {NO WAIT}. Issues fewer locks and avoids setting the lock mode on each query.

Example:readAllQuery.setSelectionCriteria(employee.get("address").equal("Ottawa"));

• LOCK: all employees in Ottawa and all referenced Ottawa addresses will be locked.
• DEFAULT_LOCK_MODE: if address is a joined attribute, and only address has a pessimistic locking policy, only referenced Ottawa addresses will be locked.

See Also:

PessimisticLockingPolicy

setPrefetchedCacheKeys

public void setPrefetchedCacheKeys(java.util.Map<java.lang.Object,org.eclipse.persistence.internal.identitymaps.CacheKey> prefetchedCacheKeys)

setReferenceClass

public void setReferenceClass(java.lang.Class aClass)

REQUIRED: Set the reference class for the query.

setReferenceClassName

public void setReferenceClassName(java.lang.String aClass)

INTERNAL: Set the reference class for the query.

setRequiresDeferredLocks

public void setRequiresDeferredLocks(boolean cascadeDeferredLocks)

INTERNAL: When reading across relationships, queries may be set to acquire deferred locks This is used to ensure any Eagerly fetched object that is the target of a relationship with an object the acquires deferred locks behaves the same as its owner

setShouldRefreshIdentityMapResult

public void setShouldRefreshIdentityMapResult(boolean shouldRefreshIdentityMapResult)

PUBLIC: Set if the attributes of the object(s) resulting from the query should be refreshed. If cascading is used the private parts of the objects will also be refreshed.

setShouldRefreshRemoteIdentityMapResult

public void setShouldRefreshRemoteIdentityMapResult(boolean shouldRefreshIdentityMapResult)

PUBLIC: Set if the attributes of the object(s) resulting from the query should be refreshed. If cascading is used the private parts of the objects will also be refreshed.

setShouldRegisterResultsInUnitOfWork

public void setShouldRegisterResultsInUnitOfWork(boolean shouldRegisterResultsInUnitOfWork)

INTERNAL: Set to false to have queries conform to a UnitOfWork without registering any additional objects not already in that UnitOfWork.

See Also:

shouldRegisterResultsInUnitOfWork

Related Bugs:

2612601

setShouldUseExclusiveConnection

public void setShouldUseExclusiveConnection(boolean shouldUseExclusiveConnection)

ADVANCED: If the user has isolated data and specified that the client session should use an exclusive connection then by setting this condition to true EclipseLink will ensure that the query is executed through the exclusive connection. This may be required in certain cases. An example being where database security will prevent a query joining to a secure table from returning the correct results when executed through the shared connection.

shouldRegisterResultsInUnitOfWork

public boolean shouldRegisterResultsInUnitOfWork()

INTERNAL: Allows one to do conforming in a UnitOfWork without registering. Queries executed on a UnitOfWork will only return working copies for objects that have already been registered.

Extreme care should be taken in using this feature, for a user will get back a mix of registered and original (unregistered) objects.

Best used with a WrapperPolicy where invoking on an object will trigger its registration (CMP). Without a WrapperPolicy registerExistingObject should be called on any object that you intend to change.

Returns:

true by default.

See Also:

setShouldRegisterResultsInUnitOfWork(boolean)

Related Bugs:

2612601

shouldUseExclusiveConnection

public boolean shouldUseExclusiveConnection()

ADVANCED: If the user has isolated data and specified that the client session should use an exclusive connection then by setting this condition to true EclipseLink will ensure that the query is executed through the exclusive connection. This may be required in certain cases. An example being where database security will prevent a query joining to a secure table from returning the correct results when executed through the shared connection.

shouldReadAllMappings

public boolean shouldReadAllMappings()

INTERNAL: Return if this is a full object query, not partial nor fetch group.

shouldReadMapping

public boolean shouldReadMapping(DatabaseMapping mapping)

INTERNAL: Check if the mapping is part of the partial attributes.

shouldRefreshIdentityMapResult

public boolean shouldRefreshIdentityMapResult()

PUBLIC: Set to a boolean. When set means refresh the instance variables of referenceObject from the database.

shouldRefreshRemoteIdentityMapResult

public boolean shouldRefreshRemoteIdentityMapResult()

PUBLIC: Set to a boolean. When set means refresh the instance variables of referenceObject from the database.

isAttributeJoined

public boolean isAttributeJoined(ClassDescriptor mappingDescriptor,
                                 java.lang.String attributeName)

INTERNAL: Return if the attribute is specified for joining.

isCacheCheckComplete

public boolean isCacheCheckComplete()

INTERNAL: Returns true if an early return cache check was completed

isClonePessimisticLocked

public boolean isClonePessimisticLocked(java.lang.Object clone,
                                        org.eclipse.persistence.internal.sessions.UnitOfWorkImpl uow)

INTERNAL: Helper method that checks if clone has been locked with uow.

recordCloneForPessimisticLocking

public void recordCloneForPessimisticLocking(java.lang.Object clone,
                                             org.eclipse.persistence.internal.sessions.UnitOfWorkImpl uow)

INTERNAL: Helper method that records clone with uow if query is pessimistic locking.

isDefaultLock

public boolean isDefaultLock()

INTERNAL: Helper method to determine the default mode. If true and quey has a pessimistic locking policy, locking will be configured according to the pessimistic locking policy.

shouldBuildNullForNullPk

public boolean shouldBuildNullForNullPk()

INTERNAL: If primary key is null ObjectBuilder.buildObject returns null in case this flag is set to true (instead of throwing exception).

setShouldBuildNullForNullPk

public void setShouldBuildNullForNullPk(boolean shouldBuildNullForNullPk)

INTERNAL: If primary key is null ObjectBuilder.buildObject returns null in case this flag is set to true (instead of throwing exception).