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Posted to dev@commons.apache.org by js...@apache.org on 2002/09/24 12:55:59 UTC
cvs commit: jakarta-commons-sandbox/jelly/src/java/org/apache/commons/jelly/tags/core SetPropertiesTag.java CoreTagLibrary.java
jstrachan 2002/09/24 03:55:59
Modified: jelly/src/java/org/apache/commons/jelly/tags/core
CoreTagLibrary.java
Added: jelly/src/java/org/apache/commons/jelly/tags/core
SetPropertiesTag.java
Log:
Added support for a <j:setProperties> tag which can make creating beans and setting properties on them much simpler.
e.g.
<j:new var="customer" className="com.acme.MyCustomer"/>
<j:setProperties object="${customer}" name="James" location="London" orders="${foo.findOrders()}"/>
Revision Changes Path
1.15 +6 -5 jakarta-commons-sandbox/jelly/src/java/org/apache/commons/jelly/tags/core/CoreTagLibrary.java
Index: CoreTagLibrary.java
===================================================================
RCS file: /home/cvs/jakarta-commons-sandbox/jelly/src/java/org/apache/commons/jelly/tags/core/CoreTagLibrary.java,v
retrieving revision 1.14
retrieving revision 1.15
diff -u -r1.14 -r1.15
--- CoreTagLibrary.java 15 Jul 2002 15:06:19 -0000 1.14
+++ CoreTagLibrary.java 24 Sep 2002 10:55:59 -0000 1.15
@@ -99,6 +99,7 @@
// extensions to JSTL
registerTag("expr", ExprTag.class);
registerTag("new", NewTag.class);
+ registerTag("setProperties", SetPropertiesTag.class);
registerTag("whitespace", WhitespaceTag.class);
registerTag("thread", ThreadTag.class);
registerTag("file", FileTag.class);
1.1 jakarta-commons-sandbox/jelly/src/java/org/apache/commons/jelly/tags/core/SetPropertiesTag.java
Index: SetPropertiesTag.java
===================================================================
/*
*
* ====================================================================
*
* The Apache Software License, Version 1.1
*
* Copyright (c) 1999-2002 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", "Commons", 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.commons.jelly.tags.core;
import java.util.Map;
import org.apache.commons.beanutils.BeanUtils;
import org.apache.commons.jelly.MissingAttributeException;
import org.apache.commons.jelly.MapTagSupport;
import org.apache.commons.jelly.XMLOutput;
/**
* A tag which sets the bean properties on the given bean.
* So if you used it as follows, for example using the <j:new> tag.
* <pre>
* <j:new className="com.acme.Person" var="person"/>
* <j:setProperties object="${person}" name="James" location="${loc}"/>
* </pre>
* Then it would set the name and location properties on the bean denoted by
* the expression ${person}.
*
* @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
* @version $Revision: 1.3 $
*/
public class SetPropertiesTag extends MapTagSupport {
public SetPropertiesTag(){
}
// Tag interface
//-------------------------------------------------------------------------
public void doTag(XMLOutput output) throws Exception {
Map attributes = getAttributes();
Object bean = attributes.remove( "object" );
if ( bean == null ) {
throw new MissingAttributeException("bean");
}
setBeanProperties(bean, attributes);
}
// Implementation methods
//-------------------------------------------------------------------------
/**
* Sets the properties on the bean. Derived tags could implement some custom
* type conversion etc.
*/
protected void setBeanProperties(Object bean, Map attributes) throws Exception {
BeanUtils.populate(bean, attributes);
}
}
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