/*******************************************************************************
* Copyright 2009, 2010 Innovation Gate GmbH. All Rights Reserved.
*
* This file is part of the OpenWGA server platform.
*
* OpenWGA is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* In addition, a special exception is granted by the copyright holders
* of OpenWGA called "OpenWGA plugin exception". You should have received
* a copy of this exception along with OpenWGA in file COPYING.
* If not, see <http://www.openwga.com/gpl-plugin-exception>.
*
* OpenWGA is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with OpenWGA in file COPYING.
* If not, see <http://www.gnu.org/licenses/>.
******************************************************************************/
package de.innovationgate.wgpublisher.expressions;
import java.util.Map;
import de.innovationgate.webgate.api.WGAPIException;
import de.innovationgate.webgate.api.WGDatabase;
import de.innovationgate.webgate.api.WGDocument;
import de.innovationgate.webgate.api.WGExpressionException;
import de.innovationgate.wgpublisher.webtml.utils.TMLContext;
public class NativeExpressionEngine implements ExpressionEngine {
public ExpressionResult evaluateExpression(String expression, TMLContext context, int type, Map objects) {
WGDocument doc = context.getapiobject();
if (!doc.getDatabase().hasFeature(WGDatabase.FEATURE_NATIVEEXPRESSIONS)) {
return new ExpressionResult(null, false, false, new WGExpressionException("This database does not support native expressions", expression));
}
Object result = null;
try {
result = doc.evaluateExpression(expression);
}
catch (WGExpressionException e) {
return new ExpressionResult(null, false, true, e);
}
catch (WGAPIException e) {
return new ExpressionResult(null, false, true, new WGExpressionException(e.getMessage(), expression, e));
}
return new ExpressionResult(result, doc.resultIsTrue(result), doc.resultIsFalse(result), null);
}
public void close() {
}
}