// uniCenta oPOS - Touch Friendly Point Of Sale
// Copyright (c) 2009-2013 uniCenta & previous Openbravo POS works
// http://www.unicenta.net/unicentaopos
//
// This file is part of uniCenta oPOS
//
// uniCenta oPOS 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.
//
// uniCenta oPOS 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 uniCenta oPOS. If not, see <http://www.gnu.org/licenses/>.
package com.openbravo.pos.scripting;
import com.openbravo.pos.forms.AppView;
import java.io.StringReader;
import java.io.StringWriter;
import java.io.Writer;
import org.apache.velocity.VelocityContext;
import org.apache.velocity.app.VelocityEngine;
import org.apache.velocity.exception.MethodInvocationException;
import org.apache.velocity.exception.ParseErrorException;
/**
*
* @author adrianromero
* Created on 5 de marzo de 2007, 19:57
*
*/
class ScriptEngineVelocity implements ScriptEngine {
private static VelocityEngine m_ve = null;
private VelocityContext c = null;
private AppView m_App;
/** Creates a new instance of ScriptEngineVelocity */
public ScriptEngineVelocity() throws ScriptException {
if (m_ve == null) {
// Inicializo Velocity
m_ve = new VelocityEngine();
// ve.setProperty(VelocityEngine.RUNTIME_LOG_LOGSYSTEM, this);
// m_ve.setProperty(VelocityEngine.RESOURCE_LOADER, "class");
// // m_ve.setProperty("class.resource.loader.description", "Velocity Classpath Resource Loader");
// // m_ve.setProperty("class.resource.loader.class", "org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader");
// m_ve.setProperty("class.resource.loader.class", "com.openbravo.pos.forms.SystemResourceLoader");
// m_ve.setProperty("class.resource.loader.description", "Velocity Resource Loader");
// m_ve.setProperty("class.resource.loader.appresources", this);
m_ve.setProperty(VelocityEngine.RUNTIME_LOG_LOGSYSTEM_CLASS, "org.apache.velocity.runtime.log.NullLogSystem");
m_ve.setProperty(VelocityEngine.ENCODING_DEFAULT, "UTF-8");
m_ve.setProperty(VelocityEngine.INPUT_ENCODING, "UTF-8");
try {
m_ve.init();
} catch (Exception e) {
throw new ScriptException("Cannot initialize Velocity Engine", e);
}
}
c = new VelocityContext();
}
@Override
public void put(String key, Object value) {
c.put(key, value);
}
@Override
public Object get(String key) {
return c.get(key);
}
@Override
public Object eval(String src) throws ScriptException {
if (m_ve == null) {
throw new ScriptException("Velocity engine not initialized.");
} else {
Writer w = new StringWriter();
try {
if (m_ve.evaluate(c, w, "log", new StringReader(src))) {
return w.toString();
} else {
throw new ScriptException("Velocity engine unexpected error.");
}
} catch (ParseErrorException e) {
throw new ScriptException(e.getMessage(), e);
} catch (MethodInvocationException e) {
throw new ScriptException(e.getMessage(), e);
} catch (Exception e) {
throw new ScriptException(e.getMessage(), e);
}
}
}
}