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package oracle.toplink.essentials.queryframework;
import oracle.toplink.essentials.exceptions.*;
import oracle.toplink.essentials.internal.sessions.UnitOfWorkImpl;
/**
* <p><b>Purpose</b>:
* Concrete class used for executing non selecting SQL strings.
*
* <p><b>Responsibilities</b>:
* <ul>
* <li> Execute a non selecting raw SQL string.
* </ul>
*
* @author Yvon Lavoie
* @since TOPLink/Java 1.0
*/
public class DataModifyQuery extends ModifyQuery {
public DataModifyQuery() {
super();
}
public DataModifyQuery(String sqlString) {
this();
setSQLString(sqlString);
}
public DataModifyQuery(Call call) {
this();
setCall(call);
}
/**
* INTERNAL:
* Perform the work to execute the SQL call.
* Return the row count of the number of rows effected by the SQL call.
*/
public Object executeDatabaseQuery() throws DatabaseException {
/* Fix to allow executing non-selecting SQL in a UnitOfWork. - RB */
if (getSession().isUnitOfWork()) {
UnitOfWorkImpl unitOfWork = (UnitOfWorkImpl)getSession();
/* bug:4211104 for DataModifyQueries executed during an event, while transaction was started by the uow*/
if ( !unitOfWork.getCommitManager().isActive() && !unitOfWork.isInTransaction()) {
unitOfWork.beginEarlyTransaction();
}
unitOfWork.setWasNonObjectLevelModifyQueryExecuted(true);
}
return getQueryMechanism().executeNoSelect();
}
/**
* PUBLIC:
* Return if this is a data modify query.
*/
public boolean isDataModifyQuery() {
return true;
}
/**
* INTERNAL:
* Prepare the receiver for execution in a session.
*/
protected void prepare() {
super.prepare();
getQueryMechanism().prepareExecuteNoSelect();
}
/**
* INTERNAL:
* Prepare the receiver for execution in a session. In particular,
* set the descriptor of the receiver to the Descriptor for the
* appropriate class for the receiver's object.
*/
public void prepareForExecution() throws QueryException {
super.prepareForExecution();
setModifyRow(getTranslationRow());
}
}