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@ -25,14 +25,10 @@ import java.io.File;
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import java.io.IOException;
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import java.util.HashMap;
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import de.anomic.server.logging.serverLog;
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public final class serverClassLoader extends ClassLoader {
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/**
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* directory of class files
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*/
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private static final String HTROOT = "htroot" + File.separator;
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private final static String baseDir = System.getProperty("user.dir");
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private final HashMap<File, Class<?>> classes;
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public serverClassLoader() {
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@ -51,93 +47,30 @@ public final class serverClassLoader extends ClassLoader {
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}
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public Class<?> loadClass(final File classfile) throws ClassNotFoundException {
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// we consider that the classkey can either be only the name of a class, or a partial or
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// complete path to a class file
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// normalize classkey: strip off '.class'
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//if (classkey.endsWith(".class")) classkey = classkey.substring(0, classkey.length() - 6);
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String classFileName = null;
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try {
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classFileName = classfile.getCanonicalPath();
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} catch (final IOException e) {
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throw new ClassNotFoundException("Unable to resolve the classfile path");
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}
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// try to load the class
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synchronized(classFileName.intern()) {
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// first try: take the class out of the cache, denoted by the classname
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// take the class out of the cache, denoted by the class file
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Class<?> c = this.classes.get(classfile);
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if (c != null) return c;
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// consider classkey as a file and extract the file name
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//File classfile = new File(classkey);
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// this file cannot exist for real, since we stripped off the .class
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// we constructed the classfile for the only purpose to strip off the name:
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final int p = classfile.getName().indexOf(".");
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if (p < 0) throw new ClassNotFoundException("wrong class name: " + classfile.getName());
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final String classname = classfile.getName().substring(0, p);
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/* get the class name out of the classfile */
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// make classFileName relative
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classFileName = classFileName.substring(classFileName.indexOf(baseDir) + baseDir.length());
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// special source dirs
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if(classFileName.contains(HTROOT)) {
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classFileName = classFileName.substring(classFileName.indexOf(HTROOT) + HTROOT.length());
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}
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String packge = "";
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final int endPackage = classFileName.lastIndexOf(File.separatorChar);
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if(endPackage != -1) {
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packge = classFileName.substring(0, endPackage);
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// the files under htroot/yacy are all in 'default package'!
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if(packge.startsWith("yacy")) {
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packge = "";
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}
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if(packge.length() > 0) {
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packge = packge.replace(File.separatorChar, '.');
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packge += ".";
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}
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}
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final int p = classFileName.indexOf(".", endPackage);
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final String classname = packge + classFileName.substring(endPackage + 1, p);
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// now that we have the name, we can create the real class file
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//classfile = new File(classkey + ".class");
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// This code doesn't work properly if there are multiple classes with the same name
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// This is because we havn't definded package names in our servlets
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//
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// try {
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// c = findLoadedClass(classname);
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// if (c == null) {
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// // second try: ask the system
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// c = findSystemClass(classname);
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// }
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// if (c == null) {
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// // third try
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// throw new ClassNotFoundException("internal trigger");
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// }
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// } catch (ClassNotFoundException e) {
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//System.out.println("INTERNAL ERROR1 in cachedClassLoader: " + e.getMessage());
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// third try: load the file from the file system
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// load the file from the file system
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byte[] b;
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try {
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b = serverFileUtils.read(classfile);
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// now make a class out of the stream
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// System.out.println("loading class " + classname + " from file " + classfile.toString());
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// make a class out of the stream
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c = this.defineClass(null, b, 0, b.length);
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resolveClass(c);
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this.classes.put(classfile, c);
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} catch (final LinkageError ee) {
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c = findLoadedClass(classname);
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if (c != null) return c;
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serverLog.logSevere("ClassLoader", "class "+ classname +" not defined: "+ ee);
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throw new ClassNotFoundException(classfile.toString());
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} catch (final IOException ee) {
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//System.out.println("INTERNAL ERROR2 in cachedClassLoader: " + ee.getMessage());
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throw new ClassNotFoundException(classfile.toString());
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}
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// }
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return c;
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}
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}
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}
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