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HHH-18108 Avoid applying the ClassTransformer on types we will be loading

This commit is contained in:
Sanne Grinovero 2024-06-18 21:38:16 +01:00 committed by Christian Beikov
parent 1c1572b88e
commit 7fb23cd783
1 changed files with 13 additions and 0 deletions
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13
hibernate-core/src/main/java/org/hibernate/jpa/internal/enhance/EnhancingClassTransformerImpl.java
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@ -31,6 +31,9 @@ public class EnhancingClassTransformerImpl implements ClassTransformer {
private final ReentrantLock lock = new ReentrantLock();
private volatile WeakReference<Entry> entryReference;
//This list is matching the constants used by CoreTypePool's default constructor
private static final String[] NO_TRANSFORM_PREFIXES = { "jakarta/", "java/", "org/hibernate/annotations/" };
public EnhancingClassTransformerImpl(EnhancementContext enhancementContext) {
Objects.requireNonNull( enhancementContext );
this.enhancementContext = enhancementContext;
@ -45,6 +48,16 @@ public class EnhancingClassTransformerImpl implements ClassTransformer {
ProtectionDomain protectionDomain,
byte[] classfileBuffer) throws TransformerException {
//Take care to not transform certain types; this is both an optimisation (we can skip this unnecessary work)
//and a safety precaution as we otherwise risk attempting to redefine classes which have already been loaded:
//see https://hibernate.atlassian.net/browse/HHH-18108
//N.B. this className doesn't use the dot-format but the slashes for package separators.
for ( String prefix : NO_TRANSFORM_PREFIXES ) {
if ( className.startsWith( prefix ) ) {
return null;
}
}
try {
return getEnhancer( loader ).enhance( className, classfileBuffer );
}