/*
* Copyright (c) 2006-2011 Nuxeo SA (http://nuxeo.com/) and others.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* bstefanescu
*/
package org.eclipse.ecr.automation.core.scripting;
import java.io.Serializable;
import org.eclipse.ecr.automation.OperationContext;
import org.mvel2.MVEL;
/**
* @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a>
*/
public class MvelExpression implements Expression {
private static final long serialVersionUID = 1L;
protected transient volatile Serializable compiled;
protected final String expr;
public MvelExpression(String expr) {
this.expr = expr;
}
public Object eval(OperationContext ctx) throws Exception {
if (compiled == null) {
compiled = MVEL.compileExpression(expr);
}
return MVEL.executeExpression(compiled, Scripting.initBindings(ctx));
}
}