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2024-11-04 21:45 本頁(yè)面
【文章內(nèi)容簡(jiǎn)介】 5. How to Receive a Message How to Enable Service Broker in a Database Check Service Broker status 1 Enable Service Broker 2 SELECT is_broker_enabled FROM WHERE database_id = db_id() ALTER DATABASE AdventureWorks SET ENABLE_BROKER Implementing Services Design: Message types Contracts Queues Services Service program logic to Create Contracts Create message types 1 Create contract 2 CREATE CONTRACT [//] ( [//] SENT BY INITIATOR, [// ] SENT BY TARGET ) CREATE MESSAGE TYPE [//] VALIDATION = WELL_FORMED_XML CREATE MESSAGE TYPE [//] VALIDATION = VALID_XML WITH SCHEMA COLLECTION awschemas to Create Queues Create queue name 1 Choose whether queue is available 2 Specify any activation parameters 3 CREATE QUEUE ExpenseQueue CREATE QUEUE ExpenseQueueWithActivation WITH STATUS = OFF, ACTIVATION ( PROCEDURE_NAME = ProcessExpense, MAX_QUEUE_READERS = 5, EXECUTE AS SELF) Create service name to Create Services 1 Choose storage queue List contracts for which the service is a target Choose whether to retain messages for conversation lifetime 2 3 4 CREATE SERVICE [//] ON QUEUE ExpenseQueue ( [//] ) to Send a Message Declare a dialog handle variable 1 Begin a dialog conversation 2 Send the message 3 DECLARE @dialog_handle uniqueidentifier DECLARE @dialog
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