/*******************************************************************************
* Copyright (c) 1998, 2009 Oracle. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
* which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* Oracle - initial API and implementation from Oracle TopLink
******************************************************************************/
package org.eclipse.persistence.internal.xr;
// Javase imports
// Java extension imports
import javax.xml.namespace.QName;
// EclipseLink imports
import org.eclipse.persistence.internal.helper.DatabaseField;
import org.eclipse.persistence.platform.database.DatabasePlatform;
import org.eclipse.persistence.queries.DatabaseQuery;
import org.eclipse.persistence.queries.StoredFunctionCall;
import org.eclipse.persistence.queries.StoredProcedureCall;
import static org.eclipse.persistence.internal.helper.ClassConstants.OBJECT;
import static org.eclipse.persistence.internal.xr.Util.SCHEMA_2_CLASS;
/**
* <p><b>INTERNAL:</b> StoredFunctionQueryHandler sets up the StoredFunctionCall
* and its arguments in the given {@link DatabaseQuery}
*
* @author Mike Norman - michael.norman@oracle.com
* @since EclipseLink 1.x
*/
public class StoredFunctionQueryHandler extends StoredProcedureQueryHandler {
@Override
public boolean isStoredFunctionQueryHandler() {
return true;
}
@Override
protected StoredProcedureCall createCall() {
return new StoredFunctionCall();
}
@Override
protected void setSingleResult(XRServiceAdapter xrService, StoredProcedureCall spCall, QName resultType) {
if (isCursorType(xrService, resultType)) {
spCall.useUnnamedCursorOutputAsResultSet();
}
else {
StoredFunctionCall sfCall = (StoredFunctionCall)spCall;
Class<?> clz = SCHEMA_2_CLASS.get(resultType);
if (clz != null) {
sfCall.setResult("", clz);
}
else {
sfCall.setResult("", OBJECT);
}
DatabasePlatform platform = xrService.getORSession().getPlatform();
if (platform == null) {
platform = new DatabasePlatform();
}
// StoredFunction's return value is the first parameter
((DatabaseField)sfCall.getParameters().firstElement()).setSqlType(
platform.getJDBCType(clz));
}
}
}