The client persistence strategy doesn't use the "squeezers."
-----Original Message-----
From: Jun Tsai [mailto:[EMAIL PROTECTED]
Sent: Sunday, April 23, 2006 10:56 PM
To: Tapestry users
Subject: Re: T4 DataSqueezer/SqueezeAdaptor, Spring & Hibernate
How to use MySqueezeAdaptor ?
<property name="xx" persist="client"/> ?
Jun Tsai
2005/9/8, Adam Henderson Azudio <[EMAIL PROTECTED]>:
>
> Adam,
>
> OK got it to work, the following is what I did along with a little
> bit of code.
>
> In hivemodule.xml:
>
> <service-point id="MySqueezeAdaptor"
> interface="com.azudio.project1.MySqueezeAdaptor">
> <invoke-factory>
> <construct class="com.azudio.project1.MySqueezeAdaptor"/>
> <set-object property="myService"
> value="spring:myService" />
> </invoke-factory>
> </service-point>
>
> <contribution configuration-id="tapestry.data.SqueezeAdaptors">
> <adaptor object="service:MySqueezeAdaptor" />
> </contribution>
>
> The Adaptor class:
> *Note: This is not a complete implementation, ie: the adaptor isn't
> really useful but just demonstrates how to get a SqueezeAdaptor set
> up and registered, although it works, it squeezes a SomeBase instance
> and reconstitutes it later.
>
> import org.apache.commons.logging.Log;
> import org.apache.commons.logging.LogFactory;
> import org.apache.tapestry.services.DataSqueezer;
> import org.apache.tapestry.util.io.SqueezeAdaptor;
>
> public class MySqueezeAdaptor implements SqueezeAdaptor {
>
> private static final Log log = LogFactory.getLog
> (MySqueezeAdaptor.class);
>
> private MySpringBean _myService;
>
> public MySpringBean getMyService(){
> return _myService;
> }
> public void setMyService(MySpringBean myService){
> _myService = myService;
> }
>
>
> private static final String PREFIX = "H";
>
> public String getPrefix() {
> return PREFIX;
> }
>
> public Class getDataClass() {
> log.debug("Getting DataClass");
> return SomeBase.class;
> }
>
> public String squeeze(DataSqueezer datasqueezer, Object entity) {
> log.debug("Squeezing Object");
>
> // Will return something like: "H:XXX:1234"
> return getPrefix() + ":" + "XXX:" + ((SomeBase)entity).getId();
> }
>
> public Object unsqueeze(DataSqueezer dataSqueezer, String
> stringRepresentation) {
> log.debug("Unsqueezing Object");
>
> String parts[] = stringRepresentation.split(":");
>
> Long id = Long.parseLong(parts[2]);
>
> log.debug("Id: " + id);
>
> return getMyService().getSomeBase(id);
> }
>
> }
>
> I'm assuming that the Spring context is all set up etc.
>
> Hope that helps.
>
> Adam.
>
> On 3 Sep 2005, at 01:14, Adam Greene wrote:
>
> > Ok, first thing right off. You do not need to subclass
> > BaseEngine. The steps are :
> >
> > 1. Your class implements org.apache.tapestry.services.DataSqueezer.
> > 2. Setup your class as a service in hivemodule.xml:
> > 3. Then contribute to the tapestry.data.SqueezeAdaptors
> > configuration point, put something like this in your hivemodule.xml:
> >
> > <contribution configuration-id="tapestry.data.SqueezeAdaptors">
> > <adaptor object="service:YourAdaptor"/>
> > </contribution>
> >
> > if you look at tapestry-4.0.jar!/META-INF/tapestry-data.xml, you
> > will see how this all works. The examples there are based on
> > "instance:" but you can use "service:"
> >
> > ----- Original Message ----- From: "Adam Henderson Azudio"
> > <[EMAIL PROTECTED]>
> > To: "Tapestry users" <tapestry-user@jakarta.apache.org>
> > Sent: Friday, September 02, 2005 11:22 AM
> > Subject: T4 DataSqueezer/SqueezeAdaptor, Spring & Hibernate
> >
> >
> >
> >> Hi,
> >>
> >> I've written a SqueezeAdaptor for use with my Hibernate entities
> >> and it works well in T3.
> >>
> >> My HibernateSqueezeAdaptor unsqueezes the string by decoding a
> >> entity type code along with the id, then it accesses my Spring
> >> appService bean and asks it to retrieve my entity.
> >>
> >> I'm attempting to upgrade/convert to T4 and I'm a bit stumped as
> >> how to do the conversion.
> >>
> >> How do I create and register a SqueezeAdaptor that uses a Spring
> >> service object, what do I put in my subclass of BaseEngine?, do I
> >> need to subclass BaseEngine? How do I inject my spring service
> >> into my adaptor? Do I need a hivemodule.xml? if so what do I put
> >> in it?
> >>
> >> What would be the logical steps needed to implement this. Also is
> >> there any security issues with what I'm doing?
> >>
> >> Many thanks
> >>
> >> Adam.
> >>
> >>
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> >>
> >>
> >
> >
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> >
>
>
>
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