[SOLVED] Why there is no Tridion page template system metadata published to broker database?

Why there is no Tridion page template system metadata published to broker database?

We are using Tridion 2011 SP1 HR1 and New UI.

We would like to generate new UI JSON tags using our Java framework based on the Java content delivery API: Tridion delivery framework (TDF).

The JSON tag for the page should contain the PageTemplateModified parameter.

<!-- Page Settings: {"PageID":"tcm:48-84852-64",
    "PageModified":"2013-02-28T15:04:30",
    "PageTemplateID":"tcm:48-24343-128",
    "PageTemplateModified":"2013-02-27T17:11:31"} 
 -->

But when a Tridion page or a Tridion page template is published to the broker database, the zip sent to the deployer does not contain any information about the page template. In the broker DB, ITEMS table does not contain any rows for page templates.

It is easy to verify using the following SQL query on the broker DB:

select * from items where item_type = 128

Is there a reason, why?

[edit]

I am speaking about system metadata.

Solution

This is very subjective,and not really a fit for Stack Overflow consider asking it at https://tridion.stackexchange.com/grant-beta-access?key=63880f9cbf452c62f726770209533893

I think the only way you will be able to get the modification date of a PT into your rendered page output would be to add the data to your page (or page meta) at publish time.

To answer the Why? Part of your Q, probably nobody thought of a reason for it, so it was never designed that way.