svn commit: r1640354 - /uima/sandbox/uima-ducc/trunk/uima-ducc-container/src/main/java/org/apache/uima/ducc/container/common/classloader/PrivateClassLoader.java

[bu...@apache.org]

Author: burn
Date: Tue Nov 18 14:48:03 2014
New Revision: 1640354

URL: http://svn.apache.org/r1640354
Log:
UIMA-4110 Create a class-loader for user code

Added:
    uima/sandbox/uima-ducc/trunk/uima-ducc-container/src/main/java/org/apache/uima/ducc/container/common/classloader/PrivateClassLoader.java   (with props)

Added: uima/sandbox/uima-ducc/trunk/uima-ducc-container/src/main/java/org/apache/uima/ducc/container/common/classloader/PrivateClassLoader.java
URL: http://svn.apache.org/viewvc/uima/sandbox/uima-ducc/trunk/uima-ducc-container/src/main/java/org/apache/uima/ducc/container/common/classloader/PrivateClassLoader.java?rev=1640354&view=auto
==============================================================================
--- uima/sandbox/uima-ducc/trunk/uima-ducc-container/src/main/java/org/apache/uima/ducc/container/common/classloader/PrivateClassLoader.java (added)
+++ uima/sandbox/uima-ducc/trunk/uima-ducc-container/src/main/java/org/apache/uima/ducc/container/common/classloader/PrivateClassLoader.java Tue Nov 18 14:48:03 2014
@@ -0,0 +1,61 @@
+/*
+ * 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.uima.ducc.container.common.classloader;
+
+import java.io.File;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.util.ArrayList;
+
+/*
+ * Create a URL class-loader from a classpath string or an array of classpath elements
+ * as a peer (not a child) of the system class-loader.
+ * Expand wild-cards to a list of jars
+ * Quietly ignore missing files just as Java does
+ * NOTE: directory elements in a URLClassLoader must end in a '/' but the toURI() method adds those 
+ */
+
+public class PrivateClassLoader {
+
+  public static URLClassLoader create(String classPath) throws MalformedURLException {
+    return create(classPath.split(":"));
+  }
+
+  public static URLClassLoader create(String[] classPathElements) throws MalformedURLException {
+    ArrayList<URL> urlList = new ArrayList<URL>(classPathElements.length);
+    for (String element : classPathElements) {
+      if (element.endsWith("*")) {
+        File dir = new File(element.substring(0, element.length() - 1));
+        for (File f : dir.listFiles()) {
+          if (f.getName().endsWith(".jar")) {
+            urlList.add(f.toURI().toURL());
+          }
+        }
+      } else {
+        File f = new File(element);
+        if (f.exists()) {
+          urlList.add(f.toURI().toURL());
+        }
+      }
+    }
+    URL[] urls = new URL[urlList.size()];
+    return new URLClassLoader(urlList.toArray(urls), ClassLoader.getSystemClassLoader().getParent());
+  }
+}

Propchange: uima/sandbox/uima-ducc/trunk/uima-ducc-container/src/main/java/org/apache/uima/ducc/container/common/classloader/PrivateClassLoader.java
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