Question about T5 and OpenSessionInViewFilter

[Toby Hobson <to...@btinternet.com>]

Hi guys,

Anyone know af any "gotchas" re: using this filter in T5? I'm trying to display a collection of objects in my page but i'm getting hibernate LazyInitialization errors. Here's the relevant code:

Start.tml

            <t:loop source="newPhotos" value="currentPhoto">
                <div class="pic">
                    <img alt="#" src="${currentPhoto.imageResource}" width="64"
                        height="64" />
                    <h2>${photo.name}</h2>
                    By
                    <span>${photo.name}</span>
                </div>
            </t:loop>

Start.java

public class Start
{
    
    @Inject
    @Service("imageService")
    private ImageService imageService;
    
    private Photo currentPhoto;

    public Collection<Photo> getNewPhotos() {
        return imageService.getRecentUploads(5);
    }

    public Photo getCurrentPhoto() {
        return currentPhoto;
    }

    public void setCurrentPhoto(Photo photo) {
        this.currentPhoto = photo;
    }
    
}

web.xml

    <filter>
        <filter-name>app</filter-name>
        <!-- Special filter that adds in a T5 IoC module derived from the Spring WebApplicationContext. -->
        <filter-class>
            org.apache.tapestry.spring.TapestrySpringFilter
        </filter-class>
    </filter>

    <filter>
        <filter-name>hibernateFilter</filter-name>
        <filter-class>
            org.springframework.orm.hibernate3.support.OpenSessionInViewFilter
        </filter-class>
    </filter>

    <filter-mapping>
        <filter-name>app</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <filter-mapping>
        <filter-name>hibernateFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

And i get:

Render queue error inorg.apache.tapestry.internal.services.PageElementFactoryImpl$1@c74dfb:could not initialize proxy - the owning Session was closed

RE: Question about T5 and OpenSessionInViewFilter

[Jonathan Barker <jo...@gmail.com>]

You might want to try reversing the order of your filter and filter-mapping
declarations in web.xml to put OpenSessionInViewFilter first.

Other than that, I would need to see your applicationContext.xml file.

Jonathan


> -----Original Message-----
> From: Toby Hobson [mailto:toby.hobson@btinternet.com]
> Sent: Wednesday, April 30, 2008 1:00 PM
> To: users@tapestry.apache.org
> Subject: Question about T5 and OpenSessionInViewFilter
> 
> Hi guys,
> 
> Anyone know af any "gotchas" re: using this filter in T5? I'm trying to
> display a collection of objects in my page but i'm getting hibernate
> LazyInitialization errors. Here's the relevant code:
> 
> Start.tml
> 
>             <t:loop source="newPhotos" value="currentPhoto">
>                 <div class="pic">
>                     <img alt="#" src="${currentPhoto.imageResource}"
> width="64"
>                         height="64" />
>                     <h2>${photo.name}</h2>
>                     By
>                     <span>${photo.name}</span>
>                 </div>
>             </t:loop>
> 
> Start.java
> 
> public class Start
> {
> 
>     @Inject
>     @Service("imageService")
>     private ImageService imageService;
> 
>     private Photo currentPhoto;
> 
>     public Collection<Photo> getNewPhotos() {
>         return imageService.getRecentUploads(5);
>     }
> 
>     public Photo getCurrentPhoto() {
>         return currentPhoto;
>     }
> 
>     public void setCurrentPhoto(Photo photo) {
>         this.currentPhoto = photo;
>     }
> 
> }
> 
> web.xml
> 
>     <filter>
>         <filter-name>app</filter-name>
>         <!-- Special filter that adds in a T5 IoC module derived from the
> Spring WebApplicationContext. -->
>         <filter-class>
>             org.apache.tapestry.spring.TapestrySpringFilter
>         </filter-class>
>     </filter>
> 
>     <filter>
>         <filter-name>hibernateFilter</filter-name>
>         <filter-class>
> 
> org.springframework.orm.hibernate3.support.OpenSessionInViewFilter
>         </filter-class>
>     </filter>
> 
>     <filter-mapping>
>         <filter-name>app</filter-name>
>         <url-pattern>/*</url-pattern>
>     </filter-mapping>
> 
>     <filter-mapping>
>         <filter-name>hibernateFilter</filter-name>
>         <url-pattern>/*</url-pattern>
>     </filter-mapping>
> 
> And i get:
> 
> Render queue error
> inorg.apache.tapestry.internal.services.PageElementFactoryImpl$1@c74dfb:co
> uld not initialize proxy - the owning Session was closed
> 
> 
> 
> 



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