HP Email Archiving Software for Exchange OWA Extension High-Level Workflow, Is the Message Class?

OWA Extension High-Level Workflow

This section describes the OWA Extension workflow.

When a user opens any mail in OWA 2007, it first checks the registry.xml file for any custom message class definitions (see below). If a match is found, control is redirected to the custom page where tombstone retrieval is handled. In the custom page, the mail item’s DocRef is read and a DocRef Document Retrieval URL is constructed with the DocRef value along with values provided in web.config. The OWA Extension Exchange Web Service (EWS) client then parses the TNEF MIME message for non-mail items, and uses the DocRef Document Retrieval URL to send an HTTP request to retrieve the document from IAP. With this document, a temporary item is created in the RISSTemp folder under Drafts, and the item is displayed to the user.

Figure 2. OWA Extension Workflow

User opens mail item in OWA

Is the Message Class?

IPM.Note.PERSISTMailItemNO

IPM.Task.PERSISTMailItem

IPM.Note.Document.PERSISTMailItem

IPM.Post.PERSISTMailItem

YES

OWA Extension

Exchange Web Service (EWS) client

Application is called through its custom form

The EWS client application creates a

temporary mail item for the opened OWA

item and retrieves DocRef from IAP

The EWS client application performs the

TNEF parsing to parse TNEF MIME

message (non mail items)

Exchange opens a

default form

The EWS client application displays the retrieved IAP message to the OWA user

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