1 files changed, 73 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/SplitClassLoader.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/SplitClassLoader.java
new file mode 100644
index 00000000..f48d3d3e
--- /dev/null
+++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/SplitClassLoader.java
@@ -0,0 +1,73 @@
+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one or more
+ *  contributor license agreements.  See the NOTICE file distributed with
+ *  this work for additional information regarding copyright ownership.
+ *  The ASF licenses this file to You under the Apache License, Version 2.0
+ *  (the "License"); you may not use this file except in compliance with
+ *  the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ */
+package org.apache.tools.ant.util;
+
+import org.apache.tools.ant.AntClassLoader;
+import org.apache.tools.ant.Project;
+import org.apache.tools.ant.types.Path;
+
+/**
+ * Specialized classloader for tasks that need finer grained control
+ * over which classes are to be loaded via Ant's classloader and which
+ * should not even if they are available.
+ */
+public final class SplitClassLoader extends AntClassLoader {
+
+    private final String[] splitClasses;
+
+    /**
+     * @param splitClasses classes contained herin will not be loaded
+     * via Ant's classloader
+     */
+    public SplitClassLoader(ClassLoader parent, Path path, Project project,
+                            String[] splitClasses) {
+        super(parent, project, path, true);
+        this.splitClasses = splitClasses;
+    }
+
+    // forceLoadClass is not convenient here since it would not
+    // properly deal with inner classes of these classes.
+    protected synchronized Class loadClass(String classname, boolean resolve)
+        throws ClassNotFoundException {
+        Class theClass = findLoadedClass(classname);
+        if (theClass != null) {
+            return theClass;
+        }
+        if (isSplit(classname)) {
+            theClass = findClass(classname);
+            if (resolve) {
+                resolveClass(theClass);
+            }
+            return theClass;
+        } else {
+            return super.loadClass(classname, resolve);
+        }
+    }
+
+    private boolean isSplit(String classname) {
+        String simplename = classname.substring(classname.lastIndexOf('.') + 1);
+        for (int i = 0; i < splitClasses.length; i++) {
+            if (simplename.equals(splitClasses[i])
+                || simplename.startsWith(splitClasses[i] + '$')) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+}