1 files changed, 139 insertions, 0 deletions
diff --git a/velocity-engine-core/src/main/java/org/apache/velocity/util/introspection/UberspectPublicFields.java b/velocity-engine-core/src/main/java/org/apache/velocity/util/introspection/UberspectPublicFields.java
new file mode 100644
index 00000000..59ef91cb
--- /dev/null
+++ b/velocity-engine-core/src/main/java/org/apache/velocity/util/introspection/UberspectPublicFields.java
@@ -0,0 +1,139 @@
+package org.apache.velocity.util.introspection;
+
+/*
+ * 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.runtime.RuntimeServices;
+import org.apache.velocity.runtime.parser.node.PublicFieldExecutor;
+import org.apache.velocity.runtime.parser.node.SetPublicFieldExecutor;
+import org.apache.velocity.util.RuntimeServicesAware;
+import org.apache.velocity.util.introspection.UberspectImpl.VelGetterImpl;
+import org.apache.velocity.util.introspection.UberspectImpl.VelSetterImpl;
+import org.slf4j.Logger;
+
+import java.util.Iterator;
+
+/**
+ * Implementation of Uberspect to additionally provide access to public fields.
+ *
+ * @author <a href="mailto:geirm@optonline.net">Geir Magnusson Jr.</a>
+ * @author <a href="mailto:henning@apache.org">Henning P. Schmiedehausen</a>
+ * @author <a href="mailto:cdauth@cdauth.eu">Candid Dauth</a>
+ */
+public class UberspectPublicFields implements Uberspect, RuntimeServicesAware
+{
+    /**
+     *  Our runtime logger.
+     */
+    protected Logger log;
+
+    /**
+     *  the default Velocity introspector
+     */
+    protected Introspector introspector;
+
+    /**
+     *  init - generates the Introspector. As the setup code
+     *  makes sure that the log gets set before this is called,
+     *  we can initialize the Introspector using the log object.
+     */
+    @Override
+    public void init()
+    {
+        introspector = new Introspector(log);
+    }
+
+    /**
+     * Property getter
+     * @param obj
+     * @param identifier
+     * @param i
+     * @return A Velocity Getter Method.
+     */
+    @Override
+    public VelPropertyGet getPropertyGet(Object obj, String identifier, Info i)
+    {
+        if (obj == null)
+        {
+            return null;
+        }
+
+        Class<?> claz = obj.getClass();
+
+        PublicFieldExecutor executor = new PublicFieldExecutor(log, introspector, claz, identifier);
+
+        return (executor.isAlive()) ? new VelGetterImpl(executor) : null;
+    }
+
+    /**
+     * Property setter
+     * @param obj
+     * @param identifier
+     * @param arg
+     * @param i
+     * @return A Velocity Setter method.
+     */
+    @Override
+    public VelPropertySet getPropertySet(Object obj, String identifier, Object arg, Info i)
+    {
+        if (obj == null)
+        {
+            return null;
+        }
+
+        Class<?> claz = obj.getClass();
+
+        SetPublicFieldExecutor executor = new SetPublicFieldExecutor(log, introspector, claz, identifier, arg);
+
+        return (executor.isAlive()) ? new VelSetterImpl(executor) : null;
+    }
+
+    /**
+     * @param obj
+     * @param info
+     * @return iterator
+     */
+    @Override
+    public Iterator getIterator(Object obj, Info info)
+    {
+        return null;
+    }
+
+    /**
+     * @param obj
+     * @param method
+     * @param args
+     * @param info
+     * @return method wrapper
+     */
+    @Override
+    public VelMethod getMethod(Object obj, String method, Object[] args, Info info)
+    {
+        return null;
+    }
+
+    /**
+     * @param rs RuntimeServices object assigned during initialization
+     */
+    @Override
+    public void setRuntimeServices(RuntimeServices rs)
+    {
+        log = rs.getLog("rendering");
+    }
+}