1 files changed, 107 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/1.0-incubator-M2/kernel/host-api/src/main/java/org/apache/tuscany/host/util/LaunchHelper.java b/sca-java-1.x/tags/1.0-incubator-M2/kernel/host-api/src/main/java/org/apache/tuscany/host/util/LaunchHelper.java
new file mode 100644
index 0000000000..c0f9003b89
--- /dev/null
+++ b/sca-java-1.x/tags/1.0-incubator-M2/kernel/host-api/src/main/java/org/apache/tuscany/host/util/LaunchHelper.java
@@ -0,0 +1,107 @@
+/*
+ * 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.host.util;
+
+import java.io.File;
+import java.io.FilenameFilter;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.net.MalformedURLException;
+import java.net.URL;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public final class LaunchHelper {
+
+    ///CLOVER:OFF
+    private LaunchHelper() {
+    }
+
+    /**
+     * Scan a directory for jar files to be added to the classpath.
+     *
+     * @param lib the directory to scan
+     * @return the URLs or jar files in that directory
+     */
+    public static URL[] scanDirectoryForJars(File lib) {
+        File[] jars = lib.listFiles(new FilenameFilter() {
+            public boolean accept(File dir, String name) {
+                return name.endsWith(".jar");
+            }
+        });
+
+        URL[] urls = new URL[jars.length];
+        for (int i = 0; i < jars.length; i++) {
+            try {
+                urls[i] = jars[i].toURI().toURL();
+            } catch (MalformedURLException e) {
+                // toURI should have escaped the URL
+                throw new AssertionError();
+            }
+        }
+        return urls;
+    }
+
+    /**
+     * Set a JavaBean property on an object.
+     *
+     * @param instance the object whose property should be set
+     * @param name     the name of the property
+     * @param value    the value to set it to
+     */
+    public static void setProperty(Object instance, String name, Object value) {
+        Class<?> beanType = instance.getClass();
+        name = "set" + Character.toUpperCase(name.charAt(0)) + name.substring(1);
+        Class<?> propertyType = value.getClass();
+        try {
+            Method setter = beanType.getMethod(name, propertyType);
+            setter.invoke(instance, value);
+        } catch (NoSuchMethodException e) {
+            throw new IllegalArgumentException(e);
+        } catch (IllegalAccessException e) {
+            throw new IllegalArgumentException(e);
+        } catch (InvocationTargetException e) {
+            throw new IllegalStateException(e.getCause());
+        }
+    }
+
+    /**
+     * Invoke a method on an object.
+     *
+     * @param instance the object to invoke
+     * @param name     the name of the method to invoke
+     * @param args     arguments to call the method with
+     * @return the value returned by the method
+     * @throws InvocationTargetException if the method throw an Exception
+     */
+    public static Object invoke(Object instance, String name, Class<?>[] paramTypes, Object... args)
+        throws InvocationTargetException {
+        try {
+            Method method = instance.getClass().getMethod(name, paramTypes);
+            return method.invoke(instance, (Object[]) args);
+        } catch (NoSuchMethodException e) {
+            throw new IllegalArgumentException(e);
+        } catch (IllegalAccessException e) {
+            throw new IllegalArgumentException(e);
+        }
+    }
+
+
+}