Add binding/dom codec class loader support

[mdsal.git] / binding / mdsal-binding-dom-codec / src / main / java / org / opendaylight / mdsal / binding / dom / codec / loader / LeafCodecClassLoader.java

diff --git a/binding/mdsal-binding-dom-codec/src/main/java/org/opendaylight/mdsal/binding/dom/codec/loader/LeafCodecClassLoader.java b/binding/mdsal-binding-dom-codec/src/main/java/org/opendaylight/mdsal/binding/dom/codec/loader/LeafCodecClassLoader.java
new file mode 100644 (file)
index 0000000..fdf2903
--- /dev/null
+++ b/binding/mdsal-binding-dom-codec/src/main/java/org/opendaylight/mdsal/binding/dom/codec/loader/LeafCodecClassLoader.java
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2019 PANTHEON.tech, s.r.o. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.mdsal.binding.dom.codec.loader;
+
+import static com.google.common.base.Verify.verify;
+import static java.util.Objects.requireNonNull;
+
+import org.eclipse.jdt.annotation.NonNull;
+
+// A leaf class loader, binding together a root class loader and some other class loader
+final class LeafCodecClassLoader extends CodecClassLoader {
+    static {
+        verify(registerAsParallelCapable());
+    }
+
+    private final @NonNull ClassLoader target;
+    private final @NonNull RootCodecClassLoader root;
+
+    LeafCodecClassLoader(final RootCodecClassLoader root, final ClassLoader target) {
+        super(root);
+        this.root = requireNonNull(root);
+        this.target = requireNonNull(target);
+    }
+
+    @Override
+    protected Class<?> findClass(final String name) throws ClassNotFoundException {
+        return target.loadClass(name);
+    }
+
+    @Override
+    CodecClassLoader findClassLoader(final Class<?> bindingClass) {
+        final ClassLoader bindingTarget = bindingClass.getClassLoader();
+        return target.equals(bindingTarget) ? this : root.findClassLoader(bindingClass);
+    }
+}