/*
* Copyright (C) NetStruxr, Inc. All rights reserved.
*
* This software is published under the terms of the NetStruxr
* Public Software License version 0.5, a copy of which has been
* included with this distribution in the LICENSE.NPL file. */
package er.directtoweb.components;
import com.webobjects.appserver.WOContext;
import com.webobjects.appserver.WORequest;
import com.webobjects.appserver.WOResponse;
import com.webobjects.foundation.NSArray;
import com.webobjects.foundation.NSDictionary;
// This component will remap keys, useful if you want to have the ability to have two sets of keys for a page
// Look in the Comparision template for how this component can be used.
/**
* Useful for remapping keys if say you want to compare two different objects in a compare list.<br />
* @d2wKey componentName
* @d2wKey keyMappingsForComparisonObject
*/
public class ERD2WKeyMapper extends ERD2WStatelessComponent {
/**
* Do I need to update serialVersionUID?
* See section 5.6 <cite>Type Changes Affecting Serialization</cite> on page 51 of the
* <a href="http://java.sun.com/j2se/1.4/pdf/serial-spec.pdf">Java Object Serialization Spec</a>
*/
private static final long serialVersionUID = 1L;
public ERD2WKeyMapper(WOContext context) { super(context); }
@Override
public void reset() {
super.reset();
_mappedKey=null;
}
String _mappedKey;
public String mappedKey() {
if (_mappedKey==null) {
NSDictionary mapping=(NSDictionary)d2wContext().valueForKey("keyMappingsForComparisonObject");
_mappedKey = (String) (mapping!=null ? mapping.objectForKey(propertyKey()) : null);
}
return _mappedKey;
}
public boolean renderMe() {
String mk=mappedKey();
if (mk==null && propertyKey()!=null && propertyKey().indexOf(".")!=-1) {
// if the key is not mentioned we render it EXCEPT if it is a key path
// and the first atom of that kp is not rendering (in which case the keypath we know will fail
NSArray components=NSArray.componentsSeparatedByString(propertyKey(),".");
NSDictionary mapping=(NSDictionary)d2wContext().valueForKey("keyMappingsForComparisonObject");
String mappingForFirstAtom=(String)mapping.objectForKey(components.objectAtIndex(0));
if (mappingForFirstAtom!=null && mappingForFirstAtom.length()==0) mk="";
}
return (mk==null || mk.length()>0) && propertyKey()!=null;
}
@Override
public void appendToResponse(WOResponse r, WOContext c) {
if (renderMe()) {
String originalKey=propertyKey();
if (mappedKey()!=null) d2wContext().takeValueForKey(mappedKey(),"propertyKey");
super.appendToResponse(r,c);
d2wContext().takeValueForKey(originalKey,"propertyKey");
}
}
@Override
public void takeValuesFromRequest(WORequest q, WOContext c) {
// no form in here -- so do nothing -- do not call super
}
}