Voir l'exemple d'écouteur suivant dans FirstListener.xml

<?xml version="1.0" encoding="iso-8859-1"?>
<template code="test_listeners" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation=".../src/main/com/efacte/datamodel/entity/listener/importing/listener_import.xsd">
  <listener>
    <name>pre save.1. If color changes to Blue, set amount to 99</name>
    <trigger>pre save</trigger>
    <source_condition boolean="AND">
      <property>
        <attribute>
          <code>color</code>
          <current_value>true</current_value>
        </attribute>
        <operator>!=</operator>
        <compared_attribute>
          <code>color</code>
          <current_value>false</current_value>
        </compared_attribute>
      </property>
      <source_condition>
        <value>
          <attribute>
            <code>color</code>
            <current_value>true</current_value>
          </attribute>
          <operator>==</operator>
          <compared_value>Blue</compared_value>
        </value>
      </source_condition>
    </source_condition>
    <action_chain>
      <name>Set amount to 99</name>
      <action>
        <name>Set amount</name>
        <class>com.efacte.datamodel.entity.action.implementations.ChangeDataCardValuesAction</class>
      </action>
    </action_chain>
  </listener>
</template>