org.eclipse.persistence.queries
Class DeleteObjectQuery

java.lang.Object
  org.eclipse.persistence.queries.DatabaseQuery
      org.eclipse.persistence.queries.ModifyQuery
          org.eclipse.persistence.queries.ObjectLevelModifyQuery
              org.eclipse.persistence.queries.DeleteObjectQuery

All Implemented Interfaces:

Serializable, Cloneable

public class DeleteObjectQuery
extends ObjectLevelModifyQuery

Purpose: Used for deleting objects.

Responsibilities: Extract primary key from object and delete it.

Since:

TOPLink/Java 1.0

Author:

Yvon Lavoie

See Also:

Serialized Form

Field Summary

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

BATCH_FETCH_PROPERTY, CascadeAggregateDelete, CascadeAllParts, CascadeByMapping, CascadeDependentParts, CascadePrivateParts, NoCascading

Constructor Summary

DeleteObjectQuery()

DeleteObjectQuery(Call call)

DeleteObjectQuery(Object objectToDelete)

Method Summary

Object	executeDatabaseQuery() INTERNAL: Perform the work to delete an object.
boolean	isDeleteObjectQuery() PUBLIC: Return if this is a delete object query.
boolean	isFullRowRequired() ADVANCED: Return if the full row is required by the delete query.
void	prepareForExecution() INTERNAL: Prepare the receiver for execution in a session.
void	setIsFullRowRequired(boolean isFullRowRequired) ADVANCED: Set if the full row is required by the delete query.

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

checkDescriptor, executeInUnitOfWork, getBackupClone, getObject, getObjectChangeSet, getPrimaryKey, getReferenceClass, getReferenceClassName, isObjectLevelModifyQuery, setBackupClone, setObject, setObjectChangeSet, setPrimaryKey, toString

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

forceBatchStatementExecution, getModifyRow, isModifyQuery, setForceBatchStatementExecution, setModifyRow

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

addArgument, addArgument, addArgument, addArgumentByTypeName, addArgumentValue, addArgumentValues, addCall, addStatement, bindAllParameters, buildArgumentFields, cacheStatement, cascadeAllParts, cascadeByMapping, cascadeOnlyDependentParts, cascadePrivateParts, checkEarlyReturn, checkPrepare, checkPrepare, clone, convertClassNamesToClasses, copyFromQuery, dontBindAllParameters, dontCacheStatement, dontCascadeParts, dontMaintainCache, execute, extractRemoteResult, getAccessor, getArguments, getArgumentTypeNames, getArgumentTypes, getArgumentValues, getBatchObjects, getCall, getCascadePolicy, getDatasourceCall, getDatasourceCalls, getDescriptor, getDomainClassNounName, getDoNotRedirect, getEJBQLString, getExecutionSession, getFlushOnExecute, getHintString, getJPQLString, getName, getProperties, getProperty, getQueryMechanism, getQueryNounName, getQueryTimeout, getRedirector, getSelectionCriteria, getSensorName, getSession, getSessionName, getShouldBindAllParameters, getSourceMapping, getSQLStatement, getSQLString, getSQLStrings, getTranslatedSQLString, getTranslatedSQLStrings, getTranslationRow, hasAccessor, hasArguments, hasProperties, hasQueryMechanism, hasSessionName, ignoreBindAllParameters, ignoreCacheStatement, isCallQuery, isCascadeOfAggregateDelete, isCustomQueryUsed, isDataModifyQuery, isDataReadQuery, isDefaultPropertiesQuery, isDeleteAllQuery, isDirectReadQuery, isExecutionClone, isExpressionQuery, isInsertObjectQuery, isJPQLCallQuery, isModifyAllQuery, isNativeConnectionRequired, isObjectBuildingQuery, isObjectLevelReadQuery, isPrepared, isReadAllQuery, isReadObjectQuery, isReadQuery, isReportQuery, isSQLCallQuery, isUpdateAllQuery, isUpdateObjectQuery, isUserDefined, isValueReadQuery, isWriteObjectQuery, maintainCache, prepareCall, prepareFromQuery, redirectQuery, remoteExecute, removeProperty, replaceValueHoldersIn, retrieveBypassCache, rowFromArguments, setAccessor, setArguments, setArgumentTypeNames, setArgumentTypes, setArgumentValues, setBatchObjects, setCall, setCascadePolicy, setDatasourceCall, setDescriptor, setDoNotRedirect, setEJBQLString, setFlushOnExecute, setHintString, setIsExecutionClone, setIsNativeConnectionRequired, setIsPrepared, setIsUserDefined, setJPQLString, setName, setProperties, setProperty, setQueryTimeout, setRedirector, setSelectionCriteria, setSession, setSessionName, setShouldBindAllParameters, setShouldBindAllParameters, setShouldCacheStatement, setShouldMaintainCache, setShouldPrepare, setShouldRetrieveBypassCache, setShouldStoreBypassCache, setShouldUseWrapperPolicy, setSourceMapping, setSQLStatement, setSQLString, setTranslationRow, shouldBindAllParameters, shouldCacheStatement, shouldCascadeAllParts, shouldCascadeByMapping, shouldCascadeOnlyDependentParts, shouldCascadeParts, shouldCascadePrivateParts, shouldCloneCall, shouldIgnoreBindAllParameters, shouldIgnoreCacheStatement, shouldMaintainCache, shouldPrepare, shouldRetrieveBypassCache, shouldStoreBypassCache, shouldUseWrapperPolicy, storeBypassCache

Methods inherited from class java.lang.Object

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

Constructor Detail

DeleteObjectQuery

public DeleteObjectQuery()

DeleteObjectQuery

public DeleteObjectQuery(Object objectToDelete)

DeleteObjectQuery

public DeleteObjectQuery(Call call)

Method Detail

isFullRowRequired

public boolean isFullRowRequired()

ADVANCED: Return if the full row is required by the delete query. This can be set on custom delete queries if more than the objects primary key and version is required.

setIsFullRowRequired

public void setIsFullRowRequired(boolean isFullRowRequired)

ADVANCED: Set if the full row is required by the delete query. This can be set on custom delete queries if more than the objects primary key and version is required.

executeDatabaseQuery

public Object executeDatabaseQuery()
                            throws DatabaseException,
                                   OptimisticLockException

INTERNAL: Perform the work to delete an object.

Specified by:

executeDatabaseQuery in class DatabaseQuery

Returns:

object - the object being deleted.

Throws:

DatabaseException - - an error has occurred on the database.

OptimisticLockException - - an error has occurred using the optimistic lock feature.

isDeleteObjectQuery

public boolean isDeleteObjectQuery()

PUBLIC: Return if this is a delete object query.

Overrides:

isDeleteObjectQuery in class DatabaseQuery

prepareForExecution

public void prepareForExecution()
                         throws QueryException

INTERNAL: Prepare the receiver for execution in a session. In particular, verify that the object is not null and contains a valid primary key.

Overrides:

prepareForExecution in class ObjectLevelModifyQuery

Throws:

QueryException