svn commit: r604218 - /lenya/branches/branch_1_2_x_shibboleth/src/java/org/apache/lenya/util/Assert.java

Author: andreas
Date: Fri Dec 14 08:35:52 2007
New Revision: 604218

URL: http://svn.apache.org/viewvc?rev=604218&view=rev
Log:
Adding Assert utility class

Added:
    lenya/branches/branch_1_2_x_shibboleth/src/java/org/apache/lenya/util/Assert.java

Added: lenya/branches/branch_1_2_x_shibboleth/src/java/org/apache/lenya/util/Assert.java
URL: http://svn.apache.org/viewvc/lenya/branches/branch_1_2_x_shibboleth/src/java/org/apache/lenya/util/Assert.java?rev=604218&view=auto
==============================================================================
--- lenya/branches/branch_1_2_x_shibboleth/src/java/org/apache/lenya/util/Assert.java (added)
+++ lenya/branches/branch_1_2_x_shibboleth/src/java/org/apache/lenya/util/Assert.java Fri Dec 14 08:35:52 2007
@@ -0,0 +1,55 @@
+/*
+ * 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.lenya.util;
+
+/**
+ * Assertion utility.
+ */
+public final class Assert {
+
+    /**
+     * @param parameterName The parameter name to use in the exception.
+     * @param object The object.
+     * @throws RuntimeException if the object is null.
+     */
+    public static final void notNull(String parameterName, Object object) {
+        if (object == null) {
+            throw new RuntimeException("The parameter [" + parameterName + "] must not be null!");
+        }
+    }
+
+    /**
+     * @param parameterName The parameter name to use in the exception.
+     * @param object The object.
+     * @throws RuntimeException if the object is null.
+     */
+    public static final void notNull(Object object) {
+        notNull("undefined", object);
+    }
+
+    /**
+     * @param expression The expression to check.
+     * @param value The value.
+     * @throws RuntimeException if the value is not true.
+     */
+    public static final void isTrue(String expression, boolean value) {
+        if (!value) {
+            throw new RuntimeException("The expression [" + expression + "] is not true!");
+        }
+    }
+}