org.jbpm.gd.jpdl.util.JbpmClasspathContainer.java Source code

Introduction

Here is the source code for org.jbpm.gd.jpdl.util.JbpmClasspathContainer.java

Source

/*
 * JBoss, Home of Professional Open Source
 * Copyright 2005, JBoss Inc., and individual contributors as indicated
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software 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.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.jbpm.gd.jpdl.util;

import java.net.MalformedURLException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.XPath;
import org.dom4j.io.SAXReader;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.core.variables.VariablesPlugin;
import org.eclipse.jdt.core.IClasspathContainer;
import org.eclipse.jdt.core.IClasspathEntry;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;
import org.jboss.tools.jbpm.preferences.JbpmInstallation;
import org.jbpm.gd.jpdl.Constants;
import org.jbpm.gd.jpdl.Logger;

public class JbpmClasspathContainer implements IClasspathContainer, Constants {

    IClasspathEntry[] jbpmLibraryEntries;
    JbpmInstallation jbpmInstallation;

    IJavaProject javaProject = null;

    public JbpmClasspathContainer(IJavaProject javaProject, JbpmInstallation jbpmInstallation) {
        this.javaProject = javaProject;
        this.jbpmInstallation = jbpmInstallation;

    }

    public IClasspathEntry[] getClasspathEntries() {
        if (jbpmLibraryEntries == null) {
            jbpmLibraryEntries = createJbpmLibraryEntries(javaProject);
        }
        return jbpmLibraryEntries;
    }

    public String getDescription() {
        return "jBPM Library [" + jbpmInstallation.name + "]";
    }

    public int getKind() {
        return IClasspathContainer.K_APPLICATION;
    }

    public IPath getPath() {
        return new Path("JBPM/" + jbpmInstallation.name);
    }

    private IClasspathEntry[] createJbpmLibraryEntries(IJavaProject project) {
        Map jarNames = getJarNames();
        ArrayList entries = new ArrayList();
        Iterator iterator = jarNames.keySet().iterator();
        while (iterator.hasNext()) {
            IPath jarPath = (IPath) iterator.next();
            IPath srcPath = (IPath) jarNames.get(jarPath);
            IPath srcRoot = null;
            entries.add(JavaCore.newLibraryEntry(jarPath, srcPath, srcRoot));
        }
        return (IClasspathEntry[]) entries.toArray(new IClasspathEntry[entries.size()]);
    }

    private Map getJarNames() {
        HashMap result = new HashMap();
        try {
            String location = VariablesPlugin.getDefault().getStringVariableManager()
                    .performStringSubstitution(jbpmInstallation.location);
            IPath locationPath = new Path(location);
            Document document = new SAXReader()
                    .read(locationPath.append("src/resources/gpd/version.info.xml").toFile());
            XPath xpath = document.createXPath("/jbpm-version-info/classpathentry");
            List list = xpath.selectNodes(document);
            for (int i = 0; i < list.size(); i++) {
                Element entry = (Element) list.get(i);
                IPath sourcePath = null;
                if (entry.attribute("src") != null) {
                    sourcePath = locationPath.append((String) entry.attribute("src").getData());
                }
                result.put(locationPath.append((String) entry.attribute("path").getData()), sourcePath);
            }
        } catch (MalformedURLException e) {
        } catch (DocumentException e) {
        } catch (CoreException e) {
            Logger.logError("Problem while resolving expression", e);
        }
        return result;
    }

}