org.eclipse.persistence.internal.xr.StoredFunctionQueryHandler Maven / Gradle / Ivy
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/*
* Copyright (c) 1998, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0,
* or the Eclipse Distribution License v. 1.0 which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
*/
// 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;
/**
* INTERNAL: StoredFunctionQueryHandler sets up the StoredFunctionCall
* and its arguments in the given {@link DatabaseQuery}
*
* @author Mike Norman - [email protected]
* @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().get(0)).setSqlType(
platform.getJDBCType(clz));
}
}
}