1 files changed, 85 insertions, 0 deletions
diff --git a/sandbox/ant/container.script/src/main/java/org/apache/tuscany/container/script/helper/ScriptHelperImplementationLoader.java b/sandbox/ant/container.script/src/main/java/org/apache/tuscany/container/script/helper/ScriptHelperImplementationLoader.java
new file mode 100644
index 0000000000..cda196590c
--- /dev/null
+++ b/sandbox/ant/container.script/src/main/java/org/apache/tuscany/container/script/helper/ScriptHelperImplementationLoader.java
@@ -0,0 +1,85 @@
+/*
+ * 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.tuscany.container.script.helper;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.Reader;
+import java.net.URL;
+
+import javax.xml.namespace.QName;
+
+import org.apache.tuscany.spi.annotation.Autowire;
+import org.apache.tuscany.spi.extension.LoaderExtension;
+import org.apache.tuscany.spi.loader.LoaderException;
+import org.apache.tuscany.spi.loader.LoaderRegistry;
+import org.apache.tuscany.spi.loader.MissingResourceException;
+import org.osoa.sca.annotations.Constructor;
+
+/**
+ * Loader for handling implementation.script elements.
+ * 
+ * <implementation.script script="path/foo.py" class="myclass">
+ * 
+ */
+public abstract class ScriptHelperImplementationLoader extends LoaderExtension<ScriptHelperImplementation> {
+
+    @Constructor( { "registry" })
+    public ScriptHelperImplementationLoader(@Autowire LoaderRegistry registry) {
+        super(registry);
+    }
+
+    public abstract QName getXMLType();
+
+    protected String loadSource(ClassLoader cl, String resource) throws LoaderException {
+        URL url = cl.getResource(resource);
+        if (url == null) {
+            throw new MissingResourceException(resource);
+        }
+        InputStream is;
+        try {
+            is = url.openStream();
+        } catch (IOException e) {
+            MissingResourceException mre = new MissingResourceException(resource, e);
+            mre.setIdentifier(resource);
+            throw mre;
+        }
+        try {
+            Reader reader = new InputStreamReader(is, "UTF-8");
+            char[] buffer = new char[1024];
+            StringBuilder source = new StringBuilder();
+            int count;
+            while ((count = reader.read(buffer)) > 0) {
+                source.append(buffer, 0, count);
+            }
+            return source.toString();
+        } catch (IOException e) {
+            LoaderException le = new LoaderException(e);
+            le.setIdentifier(resource);
+            throw le;
+        } finally {
+            try {
+                is.close();
+            } catch (IOException e) {
+                // ignore
+            }
+        }
+    }
+}