ognl.EnumerationPropertyAccessor Maven / Gradle / Ivy
//--------------------------------------------------------------------------
// Copyright (c) 1998-2004, Drew Davidson and Luke Blanshard
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// 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.
// Neither the name of the Drew Davidson nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS 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
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// 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
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// 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.
//--------------------------------------------------------------------------
package ognl;
import java.util.*;
/**
* Implementation of PropertyAccessor that provides "property" reference to
* "nextElement" (aliases to "next" also) and "hasMoreElements" (also aliased
* to "hasNext").
* @author Luke Blanshard ([email protected])
* @author Drew Davidson ([email protected])
*/
public class EnumerationPropertyAccessor extends ObjectPropertyAccessor
implements PropertyAccessor // This is here to make javadoc show this class as an implementor
{
public Object getProperty( Map context, Object target, Object name ) throws OgnlException
{
Object result;
Enumeration e = (Enumeration)target;
if ( name instanceof String ) {
if (name.equals("next") || name.equals("nextElement")) {
result = e.nextElement();
} else {
if (name.equals("hasNext") || name.equals("hasMoreElements")) {
result = e.hasMoreElements() ? Boolean.TRUE : Boolean.FALSE;
} else {
result = super.getProperty( context, target, name );
}
}
} else {
result = super.getProperty(context, target, name);
}
return result;
}
public void setProperty( Map context, Object target, Object name, Object value ) throws OgnlException
{
throw new IllegalArgumentException( "can't set property " + name + " on Enumeration" );
}
}