How to Configure an Application-Timestamped Channel Using Oracle CEP IDE for Eclipse

Configuring Channels 9-13 channel namepriceStreamname max-size10000size channel ■ Add a selector child element to specify which up-stream Oracle CQL processor queries are permitted to output their results to the channel. You may configure a channel element with a selector before creating the queries in the upstream processor. In this case, you must specify query names that match the names in the selector. For more information, Section 9.1.5, Controlling Which Queries Output to a Downstream Channel: selector . For more information, Section D.78, selector .

10. Select File Save.

The EPN Editor adds a configuration badge to the channel as Figure 9–2 shows. For more information, see Section 6.2.7, Configuration Badging . Figure 9–3 Channel With Configuration Badge

9.2.3 How to Create a Channel Component Configuration File Manually

Although the Oracle CEP IDE for Eclipse is the most efficient and least error-prone way to create and a channel configuration file see Section 9.2.1, How to Configure a System-Timestamped Channel Using Oracle CEP IDE for Eclipse , alternatively, you can also create and maintain a channel configuration file manually. For simplicity, the following procedure assumes that you are going to configure all components of an application in a single XML file. To create a channel component configuration file manually: 1. Create an EPN assembly file and add a wlevs:channel element for each channel in your application. Uniquely identify each wlevs:channel with the id attribute. See Section 4.3, Creating EPN Assembly Files for details. 2. Optionally, override the default channel assembly file configuration by adding additional wlevs:channel attributes and child elements: a. Add the appropriate wlevs:channel attributes. See Table C–9, Attributes of the wlevs:channel Application Assembly Element . b. Add the appropriate wlevs:channel child elements. Note: The selector attribute is only applicable if the up-stream node is an Oracle CQL processor. For more information, see Chapter 10, Configuring Oracle CQL Processors .