RE: Re: Trails question

Here is an snippet from roster demo pojos ...
 
Persons have photos...
Players have clips...
 

public class Person implements UserDetails, Cloneable, Serializable {

private UploadableMedia photo = new UploadableMedia();

@BlobDescriptor(renderType = RenderType.IMAGE, contentDisposition = ContentDisposition.ATTACHMENT)

@PropertyDescriptor(summary = true, index = 1)

@OneToOne(cascade = CascadeType.ALL)

public UploadableMedia getPhoto() {

return photo;

}
.....
 
 

public class Player extends Person

{

    private Set<UploadableMedia> clips =

        new HashSet<UploadableMedia>();

....

Best regards
Ken in nashua

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From: nhhockeyplayer@...
To: users@...
CC: tim.cave2@...
Date: Mon, 27 Oct 2008 09:53:56 -0400
Subject: RE: [trails-users] Re: Trails question

Hi Tim,
 
I had alot of fun implementing everything you look for...
 
There is a blob download component in trails-1.2.X branch which will facilitate threaded infrastructure to ingest and render images/documents via blob.
 
The POJO part I just operated UploadableMedia for the property of my POJO that has an image/doc or collection of such. Checkout roster demo.
 
To get the images to render everywhere like your asking... I operated my own private MimedImage component (that just articulated icons for mimetypes)... here is how I operated it inside EditCollection (snippet follows...)... works like a dream
 

<table jwcid="any@Any">

<tr jwcid="foreach@For" source="ognl:collection" value="ognl:currentObject" index="ognl:index"

renderTag="true">

<td>

<a href="#" jwcid="@EditLink" model="ognl:currentObject"

associationDescriptor="ognl:collectionDescriptor" parent="ognl:model">

<span jwcid="@If" condition="ognl:renderType">

<span jwcid="@If" condition="ognl:renderType.image">

<img jwcid="@MimedImage"

propertyDescriptor="ognl:currentObjectDescriptor"

model="ognl:currentObject"

image="ognl:byteArrayAsset"

bytes="ognl:currentObject[currentObjectDescriptor.name]"

alt="ognl:byteArrayAsset.fileName"

title="ognl:byteArrayAsset.fileName"

/>

</span>

</span>

<span jwcid="@Else">

<span jwcid="insert@Insert" value="ognl:currentObject"/>

</span>

</a>

</td>
 


Best regards
Ken in nashua

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Date: Sun, 26 Oct 2008 10:52:08 -0700
From: kalle.o.korhonen@...
To: users@...
CC: tim.cave2@...
Subject: [trails-users] Re: Trails question

Please use the Trails users mailing list when asking questions about the framework. So, you got your image bytes in the database, then what? I assume you want to show the images on the table. If so, you'd override the columnvalue for Picture property (http://www.trailsframework.org/Customizing+pages

, "Customizing ObjectTable component") and you'd render an img tag and its src link instead (with a value something like /pictureservice?id=XX). Then, you'd implement a simple Tapestry service that finds the right entity based on the given id and returns the image stream.

The 64K is a database-specific default for a lob field. You can set a different size with a Hibernate annotation, e.g. @Column(length = 1048576)

Kalle

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