org.eclipse.persistence.internal.queries

Class CallQueryMechanism

java.lang.Object

org.eclipse.persistence.internal.queries.DatabaseQueryMechanism

org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism

org.eclipse.persistence.internal.queries.CallQueryMechanism

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable

Direct Known Subclasses:

StatementQueryMechanism

public class CallQueryMechanism
extends DatasourceCallQueryMechanism

Purpose: Mechanism used for custom SQL and stored procedure queries.

Responsibilities: Executes the appropriate call.

Since:

TOPLink/Java 2.0

Author:

James Sutherland

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
CallQueryMechanism()
CallQueryMechanism(DatabaseQuery query) Initialize the state of the query
CallQueryMechanism(DatabaseQuery query, DatabaseCall call) Initialize the state of the query

Method Summary

Modifier and Type	Method and Description
DatabaseCall	getDatabaseCall() Return the call.
void	prepareCall() INTERNAL: This is different from 'prepareForExecution' in that this is called on the original query, and the other is called on the copy of the query.
void	prepareCursorSelectAllRows() Pre-build configure the SQL call.
void	prepareDeleteAll() Pre-build configure the SQL call.
void	prepareDeleteObject() Pre-build configure the SQL call.
void	prepareDoesExist(DatabaseField field) Pre-build configure the SQL call.
void	prepareExecute() Pre-build configure the SQL call for an execute call.
void	prepareExecuteSelect() Pre-build configure the SQL call.
void	prepareSelectAllRows() Pre-build configure the SQL call.
void	prepareSelectOneRow() Pre-build configure the SQL call.
void	prepareUpdateObject() Pre-build configure the SQL call.
void	setCallHasCustomSQLArguments() INTERNAL: Configure the call to be a dynamic custom SQL call, so that it ignores the # token.
void	unprepare() Unprepare the call if required.
void	updateForeignKeyFieldBeforeDelete() Update the foreign key fields to null when resolving a deletion cycle.

Methods inherited from class org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism

addCall, cursorSelectAllRows, deleteAll, deleteAllUsingTempTables, deleteObject, execute, executeDeferredCall, executeNoSelect, executeNoSelectCall, executeSelect, executeSelectCall, getCall, getCalls, hasMultipleCalls, insertObject, isCallQueryMechanism, prepare, prepareExecuteNoSelect, prepareInsertObject, prepareReportQuerySelectAllRows, prepareReportQuerySubSelect, prepareUpdateAll, selectAllReportQueryRows, selectAllRows, selectOneRow, selectResultSet, selectRowForDoesExist, setCall, updateAll, updateAllUsingTempTables, updateObject

Methods inherited from class org.eclipse.persistence.internal.queries.DatabaseQueryMechanism

buildSelectionCriteria, checkCacheForObject, clone, clone, executeWrite, executeWriteWithChangeSet, getModifyRow, getQuery, getSelectionCriteria, insertObject, insertObjectForWrite, isExpressionQueryMechanism, isJPQLCallQueryMechanism, isQueryByExampleMechanism, isStatementQueryMechanism, setQuery, updateObjectForWrite, updateObjectForWriteWithChangeSet

Methods inherited from class java.lang.Object

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

Constructor Detail

CallQueryMechanism

public CallQueryMechanism()

CallQueryMechanism

public CallQueryMechanism(DatabaseQuery query)

Initialize the state of the query

Parameters:

query - - owner of mechanism

CallQueryMechanism

public CallQueryMechanism(DatabaseQuery query,
                          DatabaseCall call)

Initialize the state of the query

Parameters:

query - - owner of mechanism

call - - sql call

Method Detail

getDatabaseCall

public DatabaseCall getDatabaseCall()

Return the call.

unprepare

public void unprepare()

Unprepare the call if required. Clone and unprepare stored procedure calls, so they can be reprepared with possible different optional arguments.

Overrides:

unprepare in class DatabaseQueryMechanism

prepareCall

public void prepareCall()
                 throws QueryException

INTERNAL: This is different from 'prepareForExecution' in that this is called on the original query, and the other is called on the copy of the query. This query is copied for concurrency so this prepare can only setup things that will apply to any future execution of this query.

Overrides:

prepareCall in class DatasourceCallQueryMechanism

Throws:

QueryException

prepareCursorSelectAllRows

public void prepareCursorSelectAllRows()
                                throws QueryException

Pre-build configure the SQL call.

Overrides:

prepareCursorSelectAllRows in class DatasourceCallQueryMechanism

Throws:

QueryException

prepareDeleteAll

public void prepareDeleteAll()

Pre-build configure the SQL call.

Overrides:

prepareDeleteAll in class DatasourceCallQueryMechanism

prepareDeleteObject

public void prepareDeleteObject()

Pre-build configure the SQL call.

Overrides:

prepareDeleteObject in class DatasourceCallQueryMechanism

prepareDoesExist

public void prepareDoesExist(DatabaseField field)

Pre-build configure the SQL call.

Overrides:

prepareDoesExist in class DatasourceCallQueryMechanism

prepareExecute

public void prepareExecute()

Pre-build configure the SQL call for an execute call.

Overrides:

prepareExecute in class DatasourceCallQueryMechanism

prepareExecuteSelect

public void prepareExecuteSelect()

Pre-build configure the SQL call.

Overrides:

prepareExecuteSelect in class DatasourceCallQueryMechanism

prepareSelectAllRows

public void prepareSelectAllRows()

Pre-build configure the SQL call.

Overrides:

prepareSelectAllRows in class DatasourceCallQueryMechanism

prepareSelectOneRow

public void prepareSelectOneRow()

Pre-build configure the SQL call.

Overrides:

prepareSelectOneRow in class DatasourceCallQueryMechanism

prepareUpdateObject

public void prepareUpdateObject()

Pre-build configure the SQL call.

Overrides:

prepareUpdateObject in class DatasourceCallQueryMechanism

setCallHasCustomSQLArguments

public void setCallHasCustomSQLArguments()

INTERNAL: Configure the call to be a dynamic custom SQL call, so that it ignores the # token.

updateForeignKeyFieldBeforeDelete

public void updateForeignKeyFieldBeforeDelete()

Update the foreign key fields to null when resolving a deletion cycle. This must always be dynamic as it is called within an delete query and is really part of the delete and does not fire update events or worry about locking.

Overrides:

updateForeignKeyFieldBeforeDelete in class DatabaseQueryMechanism