Initial commit. Was missed in the original one. Sorry Jose.

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@271282 13f79535-47bb-0310-9956-ffa450edef68

proposal/sandbox/antlib/src/main/org/apache/tools/ant/types/DataTypeAdapterTask.java

@@ -0,0 +1,125 @@
+/*
+ * The Apache Software License, Version 1.1
+ *
+ * Copyright (c) 2000-2001 The Apache Software Foundation.  All rights 
+ * reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. The end-user documentation included with the redistribution, if
+ *    any, must include the following acknowlegement:  
+ *       "This product includes software developed by the 
+ *        Apache Software Foundation (http://www.apache.org/)."
+ *    Alternately, this acknowlegement may appear in the software itself,
+ *    if and wherever such third-party acknowlegements normally appear.
+ *
+ * 4. The names "The Jakarta Project", "Ant", and "Apache Software
+ *    Foundation" must not be used to endorse or promote products derived
+ *    from this software without prior written permission. For written 
+ *    permission, please contact apache@apache.org.
+ *
+ * 5. Products derived from this software may not be called "Apache"
+ *    nor may "Apache" appear in their names without prior written
+ *    permission of the Apache Group.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation.  For more
+ * information on the Apache Software Foundation, please see
+ * <http://www.apache.org/>.
+ */
+
+package org.apache.tools.ant.types;
+
+import java.lang.reflect.Method;
+import org.apache.tools.ant.*;
+
+
+/**
+ *  Use introspection to "adapt" a DataType to be accepted in a Task position
+ *
+ * @author j_a_fernandez@yahoo.com
+ */
+public class DataTypeAdapterTask extends Task implements RoleAdapter {
+
+    Object proxy;
+    
+    /**
+     * Checks a class, whether it is suitable to be adapted.
+     *
+     * Throws a BuildException and logs as Project.MSG_ERR for
+     * conditions, that will cause the task execution to fail.
+     * Logs other suspicious conditions with Project.MSG_WARN.
+     */
+    public static void checkClass(final Class typeClass, 
+				  final Project project) {
+        // Any class can be used as a data type
+    }
+    
+    /**
+     * Do the execution.
+     */
+    public void execute() throws BuildException {
+	// Check to see if the DataType has a setProject method to set
+	if (proxy instanceof ProjectComponent) {
+	    ((ProjectComponent)proxy).setProject(project);
+	    return;
+	}
+
+	// This may not be needed
+	// We are trying to set project even it is was not declared
+	// just like TaskAdapter does for beans, this is not done
+	// by the original code
+        Method setProjectM = null;
+        try {
+            Class c = proxy.getClass();
+            setProjectM = 
+                c.getMethod( "setProject", new Class[] {Project.class});
+            if(setProjectM != null) {
+                setProjectM.invoke(proxy, new Object[] {project});
+            }
+        } catch (NoSuchMethodException e) {
+            // ignore this if the class being used as a task does not have
+            // a set project method.
+        } catch( Exception ex ) {
+            log("Error setting project in " + proxy.getClass(), 
+                Project.MSG_ERR);
+            throw new BuildException( ex );
+        }
+    }
+    
+    /**
+     * Set the target object class
+     */
+    public void setProxy(Object o) {
+        this.proxy = o;
+    }
+
+    public Object getProxy() {
+        return this.proxy ;
+    }
+
+}