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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
 * 
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
 * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 * 
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
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 * as provided by Sun in the GPL Version 2 section of the License file that
 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
 * identifying information: "Portions Copyrighted [year]
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 * its licensees as provided above.  However, if you add GPL Version 2 code
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 */

package com.sun.enterprise.deployment.archivist;

import com.sun.enterprise.deployment.Application;
import com.sun.enterprise.deployment.ApplicationClientDescriptor;
import com.sun.enterprise.deployment.io.AppClientDeploymentDescriptorFile;
import com.sun.enterprise.deployment.io.DeploymentDescriptorFile;
import com.sun.enterprise.deployment.io.runtime.AppClientRuntimeDDFile;
import com.sun.enterprise.deployment.util.ApplicationValidator;
import com.sun.enterprise.deployment.util.DOLUtils;
import com.sun.enterprise.deployment.util.ModuleContentValidator;
import com.sun.enterprise.deployment.util.ModuleDescriptor;
import org.glassfish.api.deployment.archive.ReadableArchive;
import org.glassfish.api.deployment.archive.WritableArchive;
import org.jvnet.hk2.annotations.Service;
import org.jvnet.hk2.annotations.Scoped;
import org.jvnet.hk2.component.PerLookup;
import org.xml.sax.SAXParseException;

import javax.enterprise.deploy.shared.ModuleType;
import java.io.File;
import java.io.IOException;
import java.util.Vector;
import java.util.jar.Attributes;
import java.util.jar.Manifest;
import java.util.logging.Level;

/**
 * This class is responsible for handling J2EE app client files.
 *
 * @author Sheetal Vartak
 */
@Service
@Scoped(PerLookup.class)
public class AppClientArchivist extends Archivist 
    implements PrivateArchivist {

    ApplicationClientDescriptor descriptor = null;
    DeploymentDescriptorFile standardDD = new AppClientDeploymentDescriptorFile();

    /**
     * Creates new ApplicationClientArchvisit
     */
    public AppClientArchivist() {
        handleRuntimeInfo = true;
    }

    /**
     * @return the  module type handled by this archivist
     *         as defined in the application DTD
     */
    @Override
    public ModuleType getModuleType() {
        return ModuleType.CAR;
    }


    public void setDescriptor(Application application) {

        // this is acceptable if the application actually represents
        // a standalone module
        java.util.Set appClientBundles = application.getApplicationClientDescriptors();
        if (appClientBundles.size() > 0) {
            this.descriptor = (ApplicationClientDescriptor) appClientBundles.iterator().next();
            if (this.descriptor.getModuleDescriptor().isStandalone())
                return;
            else
                this.descriptor = null;
        }
        DOLUtils.getDefaultLogger().log(Level.SEVERE, "enterprise.deployment.backend.descriptorFailure", new Object[]{this});
        throw new RuntimeException("Error setting descriptor " + descriptor + " in " + this);
    }

    /**
     * @return the DeploymentDescriptorFile responsible for handling
     *         standard deployment descriptor
     */
    @Override
    public DeploymentDescriptorFile getStandardDDFile() {
        return standardDD;
    }

    /**
     * @return if exists the DeploymentDescriptorFile responsible for
     *         handling the configuration deployment descriptors
     */
    @Override
    public DeploymentDescriptorFile getConfigurationDDFile() {
        return new AppClientRuntimeDDFile();
    }

    /**
     * @return a default BundleDescriptor for this archivist
     */
    @Override
    public ApplicationClientDescriptor getDefaultBundleDescriptor() {
        ApplicationClientDescriptor appClientDesc =
                new ApplicationClientDescriptor();
        return appClientDesc;
    }

    /**
     * validates the DOL Objects associated with this archivist, usually
     * it requires that a class loader being set on this archivist or passed
     * as a parameter
     */
    @Override
    public void validate(ClassLoader aClassLoader) {
        ClassLoader cl = aClassLoader;
        if (cl == null) {
            cl = classLoader;
        }
        if (cl == null) {
            return;
        }
        descriptor.setClassLoader(cl);
        descriptor.visit(new ApplicationValidator());
    }

    /**
     * perform any action after all standard DDs is read
     *
     * @param descriptor the deployment descriptor for the module
     * @param archive    the module archive
     */
    @Override
    protected void postStandardDDsRead(ApplicationClientDescriptor descriptor,
                                       ReadableArchive archive) throws IOException {
        super.postStandardDDsRead(descriptor, archive);
        // look for MAIN_CLASS
        Manifest m = archive.getManifest();
        descriptor.setMainClassName(getMainClassName(m));
    }

    /**
     * perform any post deployment descriptor reading action
     *
     * @param descriptor the deployment descriptor for the module
     * @param archive    the module archive
     */
    @Override
    protected void postOpen(ApplicationClientDescriptor descriptor, ReadableArchive archive)
            throws IOException {

        super.postOpen(descriptor, archive);

        ApplicationClientDescriptor appClient = descriptor;
        ModuleContentValidator mdv = new ModuleContentValidator(archive);
        appClient.visit(mdv);
    }

    /**
     * writes the content of an archive to a JarFile
     *
     * @param in            the input  archive
     * @param out           the archive output stream to write to
     * @param entriesToSkip the files to not write from the original archive
     */
    @Override
    protected void writeContents(ReadableArchive in, WritableArchive out, Vector entriesToSkip)
            throws IOException {

        // prepare the manifest file to add the main class entry
        if (manifest == null) {
            manifest = new Manifest();
        }
        manifest.getMainAttributes().put(Attributes.Name.MANIFEST_VERSION, MANIFEST_VERSION_VALUE);
        manifest.getMainAttributes().put(Attributes.Name.MAIN_CLASS,
                ((ApplicationClientDescriptor) getDescriptor()).getMainClassName());

        super.writeContents(in, out, entriesToSkip);
    }

    /**
     * @return the manifest attribute Main-class
     */
    public String getMainClassName(Manifest m) {
        if (m != null) {
            return m.getMainAttributes().getValue(Attributes.Name.MAIN_CLASS);
        }
        return null;
    }

    @Override
    protected boolean postHandles(ReadableArchive archive)
            throws IOException {
        //check the main-class attribute
        if (getMainClassName(archive.getManifest()) != null) {
            return true;
        }

        return false;
    }

    protected String getArchiveExtension() {
        return APPCLIENT_EXTENSION;
    }

    @Override
    public void readPersistenceDeploymentDescriptors(
            ReadableArchive archive,
            ApplicationClientDescriptor descriptor)
            throws IOException, SAXParseException {
        if (logger.isLoggable(Level.FINE)) {
            logger.logp(Level.FINE, "AppClientArchivist",
                    "readPersistenceDeploymentDescriptors", "archive = {0}",
                    archive.getURI());
        }
        // note we pass "" as the PURootPath because META-INF/persistence.xml
        // can only be present on the top level in an client-jar, so the root of
        // persistence unit is always same as the root of an client-jar file.
        // hence relative distance between them is empty.
        readPersistenceDeploymentDescriptor(archive, "", descriptor);
    }
}




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