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*
* // Copyright 2006-2007 Sun Microsystems, Inc. All rights reserved.
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* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can obtain
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* or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
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* 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
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* Header, with the fields enclosed by brackets [] replaced by your own
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package oracle.toplink.essentials.ejb.cmp3.persistence;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.JarURLConnection;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
import java.util.jar.JarInputStream;
import java.util.logging.Logger;
import java.util.logging.Level;
/**
* This class is written to deal with various URLs that can be returned by
* {@link javax.persistence.spi.PersistenceUnitInfo#getPersistenceUnitRootUrl()}
*
* @author Sanjeeb.Sahoo@Sun.COM
*/
public class ArchiveFactoryImpl {
/*
* Implementation Note: This class does not have any dependency on TopLink
* or GlassFish implementation classes. Please retain this searation.
*/
private Logger logger;
public ArchiveFactoryImpl() {
this(Logger.global);
}
public ArchiveFactoryImpl(Logger logger) {
this.logger = logger;
}
public Archive createArchive(URL url) throws URISyntaxException, IOException {
logger.entering("ArchiveFactoryImpl", "createArchive", new Object[]{url});
Archive result;
String protocol = url.getProtocol();
logger.logp(Level.FINER, "ArchiveFactoryImpl", "createArchive", "protocol = {0}", protocol);
if ("file".equals(protocol)) {
URI uri = null;
try {
// Attempt to use url.toURI since it will deal with all urls
// without special characters and URISyntaxException allows us
// to catch issues with special characters. This will handle
// URLs that already have special characters replaced such as
// URLS derived from searches for persistence.xml on the Java
// System class loader
uri = url.toURI();
} catch (URISyntaxException exception) {
// Use multi-argument constructor for URI since single-argument
// constructor and URL.toURI() do not deal with special
// characters in path
uri = new URI(url.getProtocol(), url.getUserInfo(), url.getHost(), url.getPort(), url.getPath(), url.getQuery(), null);
}
File f = new File(uri);
if (f.isDirectory()) {
// e.g. file:/tmp/a_ear/ejb_jar
result = new DirectoryArchive(f);
} else {
// e.g. file:/tmp/a_ear/lib/pu.jar
// It's not a directory. Then it must be a jar file.
result = new JarFileArchive(new JarFile(f));
}
} else if ("jar".equals(protocol)) { // NOI18N
JarURLConnection conn = JarURLConnection.class.cast(url.openConnection());
JarEntry je = conn.getJarEntry();
if (je == null) {
// e.g. jar:file:/tmp/a_ear/lib/pu.jar!/
// No entryName specified, hence URL points to a JAR file and
// not to any entry inside it. Ideally this should have been
// file:/tmp/a_ear/lib/pu.jar,
// but containers (e.g.) WebLogic return this kind of URL,
// so we better handle this in our code to imrove pluggability.
// Read the entire jar file.
result = new JarFileArchive(conn.getJarFile());
} else if (je.isDirectory()) {
// e.g. jar:file:/tmp/a_ear/b.war!/WEB-INF/classes/
// entryName [je.getName()] is a directory
result = new DirectoryInsideJarURLArchive(url);
} else {
// some URL (e.g.) jar:file:/tmp/a_ear/b.war!/WEB-INF/lib/pu.jar
// entryName [je.getName()] is a file, so treat this URL as a
// URL from which a JAR format InputStream can be obtained.
result = new JarInputStreamURLArchive(url);
}
} else if (isJarInputStream(url)){
result = new JarInputStreamURLArchive(url);
} else {
result = new URLArchive(url);
}
logger.exiting("ArchiveFactoryImpl", "createArchive", result);
return result;
}
/**
* This method is called for a URL which has neither jar nor file protocol.
* This attempts to find out if we can treat it as a URL from which a JAR
* format InputStream can be obtained.
* @param url
*/
private boolean isJarInputStream(URL url) throws IOException {
InputStream in = null;
try {
in = url.openStream();
if (in == null) { // for directories, we may get InputStream as null
return false;
}
JarInputStream jis = new JarInputStream(in);
jis.close();
return true; // we are successful in creating a Jar format IS
} catch (IOException ioe) {
if (in != null) {
in.close();
}
return false;
}
}
}
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