1 files changed, 79 insertions, 0 deletions
diff --git a/velocity-engine-core/src/main/java/org/apache/velocity/context/Context.java b/velocity-engine-core/src/main/java/org/apache/velocity/context/Context.java
new file mode 100644
index 00000000..f0d51f8f
--- /dev/null
+++ b/velocity-engine-core/src/main/java/org/apache/velocity/context/Context.java
@@ -0,0 +1,79 @@
+package org.apache.velocity.context;
+
+/*
+ * 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.
+ */
+
+/**
+ *  Interface describing the application data context.  This set of
+ *  routines is used by the application to set and remove 'named' data
+ *  object to pass them to the template engine to use when rendering
+ *  a template.
+ *
+ *  This is the same set of methods supported by the original Context
+ *  class
+ *
+ *  @see org.apache.velocity.context.AbstractContext
+ *  @see org.apache.velocity.VelocityContext
+ *
+ *  @author <a href="mailto:jvanzyl@apache.org">Jason van Zyl</a>
+ *  @author <a href="mailto:geirm@optonline.net">Geir Magnusson Jr.</a>
+ *  @version $Id$
+ */
+public interface Context
+{
+    /**
+     * Adds a name/value pair to the context.
+     *
+     * @param key   The name to key the provided value with.
+     * @param value The corresponding value.
+     * @return The old object or null if there was no old object.
+     */
+    Object put(String key, Object value);
+
+    /**
+     * Gets the value corresponding to the provided key from the context.
+     *
+     * @param key The name of the desired value.
+     * @return    The value corresponding to the provided key.
+     */
+    Object get(String key);
+
+    /**
+     * Indicates whether the specified key is in the context.
+     *
+     * @param key The key to look for.
+     * @return    Whether the key is in the context.
+     */
+    boolean containsKey(String key);
+
+    /**
+     * Get all the keys for the values in the context.
+     * @return All the keys for the values in the context.
+     */
+    String[] getKeys();
+
+    /**
+     * Removes the value associated with the specified key from the context.
+     *
+     * @param key The name of the value to remove.
+     * @return    The value that the key was mapped to, or <code>null</code>
+     *            if unmapped.
+     */
+    Object remove(String key);
+}