Page History

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• component event requests target a specific component on a specific page, triggering an event within that component
• render requests target a specific page, and stream the HTML markup for that page back to the client

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This dichotomy between component event requests and render requests is new in Tapestry 5. It is in some ways based on ideas from the Portlet specification and differentiating the two types of requests alleviates a number of problems in traditional web applications related to the browser back button, or to the user hitting the refresh button in their browser.

Logical Page Name Shortening

In certain cases, Tapestry will shorten the the logical name of a page. For example, the page class org.example.pages.address.CreateAddress will be given a logical name of "address/Create" (the redundant "Address" is removed as a suffix). However, this only affects how the page is referenced in URLs; the template file will still be CreateAddress.tml, whether on the classpath, or as address/CreateAddress.tml (in the web context).

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Tapestry actually creates multiple names for the name page: "address/Create" and "address/CreateAddress" are both synonymous. You can user either in Java code that refers to a page by name, or as the page parameter of a PageLink.

Component Event Requests & Responses

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