1 files changed, 84 insertions, 0 deletions
diff --git a/velocity-engine-core/src/main/java/org/apache/velocity/runtime/parser/node/MapSetExecutor.java b/velocity-engine-core/src/main/java/org/apache/velocity/runtime/parser/node/MapSetExecutor.java
new file mode 100644
index 00000000..3dd3301a
--- /dev/null
+++ b/velocity-engine-core/src/main/java/org/apache/velocity/runtime/parser/node/MapSetExecutor.java
@@ -0,0 +1,84 @@
+package org.apache.velocity.runtime.parser.node;
+
+/*
+ * 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.
+ */
+
+import org.apache.velocity.exception.VelocityException;
+import org.slf4j.Logger;
+
+import java.util.Map;
+
+/**
+ * SetExecutor that is smart about Maps. If it detects one, it does not
+ * use Reflection but a cast to access the setter.
+ *
+ * @author <a href="mailto:henning@apache.org">Henning P. Schmiedehausen</a>
+ * @version $Id$
+ * @since 1.5
+ */
+public class MapSetExecutor
+        extends SetExecutor
+{
+    private final String property;
+
+    public MapSetExecutor(final Logger log, final Class clazz, final String property)
+    {
+        this.log = log;
+        this.property = property;
+        discover(clazz);
+    }
+
+    protected void discover (final Class<?> clazz)
+    {
+        Class<?> [] interfaces = clazz.getInterfaces();
+        for (Class<?> anInterface : interfaces)
+        {
+            if (anInterface.equals(Map.class))
+            {
+                try
+                {
+                    if (property != null)
+                    {
+                        setMethod(Map.class.getMethod("put", Object.class, Object.class));
+                    }
+                }
+                /*
+                 * pass through application level runtime exceptions
+                 */
+                catch (RuntimeException e)
+                {
+                    throw e;
+                }
+                catch (Exception e)
+                {
+                    String msg = "Exception while looking for put('" + property + "') method";
+                    log.error(msg, e);
+                    throw new VelocityException(msg, e);
+                }
+                break;
+            }
+        }
+    }
+
+    @Override
+    public Object execute(final Object o, final Object arg)
+    {
+        return ((Map) o).put(property, arg);
+    }
+}