/*!
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program 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 Lesser General Public License for more details.
*
* Copyright (c) 2002-2013 Pentaho Corporation.. All rights reserved.
*/
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package org.pentaho.reporting.engine.classic.extensions.charting.runtime;
import java.io.FileReader;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.mozilla.javascript.Context;
import org.mozilla.javascript.ContextFactory;
import org.mozilla.javascript.Script;
import org.mozilla.javascript.Scriptable;
import org.mozilla.javascript.ScriptableObject;
/**
* @author pdpi
*/
public abstract class BaseScript implements Script
{
private static final Log logger = LogFactory.getLog(BaseScript.class);
private String source;
private String rootPath;
private Scriptable scope;
BaseScript()
{
}
BaseScript(final String source)
{
this.source = source.replaceAll("\\\\", "/").replaceAll("/+", "/");
this.rootPath = this.source.replaceAll("(.*/).*", "$1");
}
public void initializeObjects()
{
final Context context = ContextFactory.getGlobal().enterContext();
try
{
final Object wrappedFactory = Context.javaToJS(new DatasourceFactory(), scope);
ScriptableObject.putProperty(scope, "datasourceFactory", wrappedFactory);
}
finally
{
context.exit();
}
}
public void setScope(final Scriptable scope)
{
this.scope = scope;
if (scope instanceof BaseScope)
{
final BaseScope baseScope = (BaseScope) scope;
baseScope.setBasePath(this.rootPath);
}
initializeObjects();
}
protected void executeScript(final Map<String, Object> params)
{
final Context cx = Context.getCurrentContext();
// env.js has methods that pass the 64k Java limit, so we can't compile
// to bytecode. Interpreter mode to the rescue!
cx.setOptimizationLevel(-1);
cx.setLanguageVersion(Context.VERSION_1_7);
final Object wrappedParams;
if (params != null)
{
wrappedParams = Context.javaToJS(params, scope);
}
else
{
wrappedParams = Context.javaToJS(new HashMap<String, Object>(), scope);
}
try
{
ScriptableObject.defineProperty(scope, "params", wrappedParams, 0);
cx.evaluateReader(scope, new FileReader(source), this.source, 1, null);
}
catch (IOException ex)
{
logger.error("Failed to read " + source + ": " + ex.toString());
}
}
}