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Traverse ancestor class loader

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This commit is contained in:
Taro L. Saito 2011-06-24 14:23:01 +09:00
parent b531cb36dc
commit 4a7694e295
1 changed files with 9 additions and 1 deletions
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10
src/main/java/org/xerial/snappy/SnappyLoader.java
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@ -84,6 +84,14 @@ public class SnappyLoader
private static boolean isInitialized = false; private static boolean isInitialized = false;
private static boolean isLoaded = false; private static boolean isLoaded = false;
private static ClassLoader getAncestorClassLoader() {
ClassLoader cl = SnappyLoader.class.getClassLoader();
while (cl.getParent() != null) {
cl = cl.getParent();
}
return cl;
}
private static byte[] getByteCode(String resourcePath) throws IOException { private static byte[] getByteCode(String resourcePath) throws IOException {
InputStream in = SnappyLoader.class.getResourceAsStream(resourcePath); InputStream in = SnappyLoader.class.getResourceAsStream(resourcePath);
@ -134,7 +142,7 @@ public class SnappyLoader
Method defineClass = classLoader.getDeclaredMethod("defineClass", new Class[] { String.class, Method defineClass = classLoader.getDeclaredMethod("defineClass", new Class[] { String.class,
byte[].class, int.class, int.class, ProtectionDomain.class }); byte[].class, int.class, int.class, ProtectionDomain.class });
ClassLoader systemClassLoader = ClassLoader.getSystemClassLoader(); ClassLoader systemClassLoader = getAncestorClassLoader();
// ClassLoader.defineClass is a protected method, so we have to make it accessible // ClassLoader.defineClass is a protected method, so we have to make it accessible
defineClass.setAccessible(true); defineClass.setAccessible(true);
try { try {