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List:       tapestry-dev
Subject:    Re: activation context in Tapestry
From:       Howard Lewis Ship <hlship () gmail ! com>
Date:       2012-05-31 18:05:33
Message-ID: CACd-vsP48Z5s7x8E6frhDQUbuN2wyPHk6d6ydyiie98ESneRPw () mail ! gmail ! com
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To be clear; if there isn't a specific ValueEncoder for your object
type, then Tapestry will use a pair of TypeCoercers (your object type
-> String, and String -> your object type).  ValueEncoder (which
should really be named ValueTranscoder) is a single object that
handles both directions, and is expressly oriented for encoding data
into a client-side String (whether that string will be stored into the
URL, a hidden form field, or a cookie).

Beware of relying on Serializable; that's really intended for
prototyping only, as serializing even a simple object can result in a
huge string, and often unintentionally drags in a large object graph.
Generally speaking, when we see complaints about Tapestry rendering
slowly (either on the server or on the client), it's because they've
stumbled over this.

On Thu, May 31, 2012 at 6:05 AM, Lance Java <lance.java@googlemail.com> wrote:
> You will need to imlpement a ValueEncoder and contribute it to the
> ValueEncoderSource.
> 
> http://tapestry.apache.org/tapestry5/apidocs/org/apache/tapestry5/ValueEncoder.html
> http://tapestry.apache.org/current/apidocs/org/apache/tapestry5/services/ValueEncoderSource.html
>  
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-- 
Howard M. Lewis Ship

Creator of Apache Tapestry

The source for Tapestry training, mentoring and support. Contact me to
learn how I can get you up and productive in Tapestry fast!

(971) 678-5210
http://howardlewisship.com

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