oracle.toplink.essentials.ejb.cmp3.persistence.JarFileArchive Maven / Gradle / Ivy
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package oracle.toplink.essentials.ejb.cmp3.persistence;
import java.util.jar.JarFile;
import java.util.jar.JarEntry;
import java.util.Iterator;
import java.util.Enumeration;
import java.util.ArrayList;
import java.util.logging.Logger;
import java.util.logging.Level;
import java.util.zip.ZipEntry;
import java.io.InputStream;
import java.io.IOException;
import java.io.File;
import java.net.URL;
import java.net.MalformedURLException;
/**
* This is an implementation of {@link Archive} when container returns a
* file: url that refers to a jar file. e.g. file:/tmp/a_ear/lib/pu.jar
*
* @author [email protected]
*/
public class JarFileArchive implements Archive {
private JarFile jarFile;
private URL rootURL;
private Logger logger;
public JarFileArchive(JarFile jarFile) throws MalformedURLException {
this(jarFile, Logger.global);
}
public JarFileArchive(JarFile jarFile, Logger logger)
throws MalformedURLException {
logger.entering("JarFileArchive", "JarFileArchive", // NOI18N
new Object[]{jarFile});
this.logger = logger;
this.jarFile = jarFile;
rootURL = new File(jarFile.getName()).toURI().toURL();
logger.logp(Level.FINER, "JarFileArchive", "JarFileArchive", // NOI18N
"rootURL = {0}", rootURL); // NOI18N
}
public Iterator getEntries() {
Enumeration jarEntries = jarFile.entries();
ArrayList result = new ArrayList();
while (jarEntries.hasMoreElements()) {
final JarEntry jarEntry = jarEntries.nextElement();
if(!jarEntry.isDirectory()) { // exclude directory entries
result.add(jarEntry.getName());
}
}
return result.iterator();
}
public InputStream getEntry(String entryPath) throws IOException {
InputStream is = null;
final ZipEntry entry = jarFile.getEntry(entryPath);
if (entry != null) {
is = jarFile.getInputStream(entry);
}
return is;
}
public URL getEntryAsURL(String entryPath) throws IOException {
return jarFile.getEntry(entryPath)!= null ?
new URL("jar:"+rootURL+"!/"+entryPath) : null; // NOI18N
}
public URL getRootURL() {
return rootURL;
}
}