Chapter 15. Filtering Messages

Procedure

• Add the filter element to the desired queue and include the filter you want to apply as the value of the element. In the example below, the filter NEWS='technology' is added to the queue technologyQueue.

  <configuration>
    <core>
      ...
      <addresses>
          <address name="myQueue">
             <anycast>
                <queue name="myQueue">
                  <filter string="NEWS='technology'"/>
                </queue>
             </anycast>
          </address>
       </addresses>
     </core>
  </configuration>

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Procedure

• Edit BROKER_INSTANCE_DIR/etc/broker.xml by applying the prefix convert_string_expressions: to the desired filter. The example below edits the filter value from age > 18 to convert_string_expressions:age > 18.

  <configuration>
    <core>
      ...
      <addresses>
          <address name="myQueue">
             <anycast>
                <queue name="myQueue">
                  <filter string="convert_string_expressions='age > 18'"/>
                </queue>
             </anycast>
          </address>
       </addresses>
     </core>
  </configuration>

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Procedure

• Edit BROKER_INSTANCE_DIR/etc/broker.xml by applying the prefix hyphenated_props: to the desired filter. In the example below, a filter is edited so that it can select for the hyphenated property foo-bar.

  <configuration>
    <core>
      ...
      <addresses>
          <address name="myQueue">
             <anycast>
                <queue name="myQueue">
                  <filter string="hyphenated_props='foo-bar = 0'"/>
                </queue>
             </anycast>
          </address>
       </addresses>
     </core>
  </configuration>

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