Re: [Springframework-developer] PropertyEditor lookup question

[Steven D. <ste...@gm...>]

For clarities sake, this is the property editor I'm registering:

package sandbox;

import java.beans.PropertyEditor;
import java.beans.PropertyEditorSupport;
import java.util.HashMap;
import java.util.Map;

/**
 * <p>Property editor that delegates to other property editors based on
 * a prefix. This value should be:</p>
 * 
 * <pre>
 *    &ltprefix&gt;:some_value
 * </pre>
 * 
 * <p>So for example, to resolve class names add an entry to the delegates
 * property with key &quot;class&quot; and value 
 * <code>org.springframework.beans.propertyeditors.ClassEditor</code>. A
 * value that would match for <code>ClassEditor</code> would be:</p>
 * 
 * <pre>
 *    class:mypackage.myClass
 * </pre>
 * 
 * <p>If not prefix is found or the prefix is registered the value is
 * returned as a string.</p>
 * 
 * @since 06-01-2005
 * @author Steven Devijver
 */
public class DelegatingPropertyEditor extends PropertyEditorSupport {

	private Map delegates = null;
	
	public DelegatingPropertyEditor() {
		super();
		this.delegates = new HashMap();
	}
	
	public void setDelegates(Map delegates) {
		this.delegates = delegates;
	}
	
	public void setAsText(String text) throws IllegalArgumentException {
		boolean hasSemiColon = false;
		String key = null;
		String value = null;
		if (text.indexOf(":") > -1) {
			hasSemiColon = true;
			key = text.substring(0, text.indexOf(":"));
			value = text.substring(text.indexOf(":") + 1, text.length());
		}
		if (hasSemiColon && this.delegates.containsKey(key)) {
			PropertyEditor propertyEditor = (PropertyEditor)this.delegates.get(key);
			propertyEditor.setAsText(value);
			setValue(propertyEditor.getValue());
		} else {
			/*
			 * It's a string!
			 */
			setValue(text);
		}
	}
}



On Thu, 6 Jan 2005 15:52:58 +0100, Steven Devijver
<ste...@gm...> wrote:
> The key is java.lang.Object, I want to explicitly register for that.
> My property editor works for a normal property that accepts an Object
> parameter but apparently not for lists.
> 
> It would be nice to use the available property editors when handling
> lists and maps. The default editors would never be used as none are
> registered for Object. Likewise, when setting properties the default
> once would be used because they come first in the list.
> 
> 
> On Thu, 06 Jan 2005 14:14:30 +0000, Rob Harrop <ro...@ca...> wrote:
> > The key of the customEditors Map entries must be the name of the class
> > you are registering the property  editor for.
> >
> > Rob
> >
> > Steven Devijver wrote:
> >
> > >I register a delegating property editor like this:
> > >
> > >       <bean class="org.springframework.beans.factory.config.CustomEditorConfigurer">
> > >               <property name="customEditors">
> > >                       <map>
> > >                               <entry key="java.lang.Object">
> > >                                       <bean class="sandbox.DelegatingPropertyEditor">
> > >                                               <property name="delegates">
> > >                                                       <map>
> > >                                                               <entry key="classpath">
> > >                                                                       <bean class="org.springframework.beans.propertyeditors.InputStreamEditor"/>
> > >                                                               </entry>
> > >                                                               <entry key="class">
> > >                                                                       <bean class="org.springframework.beans.propertyeditors.ClassEditor"/>
> > >                                                               </entry>
> > >                                                       </map>
> > >                                               </property>
> > >                                       </bean>
> > >                               </entry>
> > >                       </map>
> > >               </property>
> > >       </bean>
> > >
> > >When I create this bean my property editor is not called. Why is that?
> > >
> > >       <bean id="aList" class="java.util.ArrayList">
> > >               <constructor-arg>
> > >                       <list>
> > >                               <value>classpath:sandbox.xml</value>
> > >                               <value>class:sandbox.TestSandBox</value>
> > >                               <value>a string</value>
> > >                       </list>
> > >               </constructor-arg>
> > >       </bean>
> > >
> > >Steven
> > >
> > >
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