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[java] Don't cache jar files when loading classes

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This makes sure, that the underlying JarFiles are closed
as soon as the streams to read single classes are closed.
This commit is contained in:
Andreas Dangel
2023-10-18 16:07:17 +02:00
parent 95b1150e25
commit fbf2f77871
1 changed files with 6 additions and 1 deletions
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7
pmd-java/src/main/java/net/sourceforge/pmd/lang/java/symbols/internal/asm/Loader.java
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@@ -8,6 +8,7 @@ package net.sourceforge.pmd.lang.java.symbols.internal.asm;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;
import org.checkerframework.checker.nullness.qual.NonNull;
import org.checkerframework.checker.nullness.qual.Nullable;
@@ -48,7 +49,11 @@ abstract class Loader {
@Override
@Nullable
InputStream getInputStream() throws IOException {
return url.openStream();
URLConnection connection = url.openConnection();
// disable the cache, so that the underlying JarFile (if any) is closed, when
// the returned stream is closed - leaving no open files behind.
connection.setUseCaches(false);
return connection.getInputStream();
}
@Override