FlexPMD/language-module/ruleset/ruleset-flex-basic/src/main/resources/rulesets/flex/binding.xml

<?xml version="1.0"?>
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<ruleset name="Binding Rules"
         xmlns="http://pmd.sourceforge.net/ruleset/2.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://pmd.sourceforge.net/ruleset/2.0.0 http://pmd.sourceforge.net/ruleset_2_0_0.xsd"
         xsi:noNamespaceSchemaLocation="http://pmd.sf.net/ruleset_xml_schema.xsd">

	<description>
      The Binding ruleset contains a collection of good practices around usage of binding.
	</description>

	<rule class="org.apache.flex.pmd.rules.binding.BindingUtilsRule"
		message="BindingUtils class uses hard coded strings, which won't be picked up by the compiler if you rename this attribute. You should probably consider refactoring using events">
		<description></description>
		<priority>1</priority>
		<example>
public class Controller extends FrontController
{
   public function Controller()
   {
   	 BindingUtils.bindSetter(setContent, value, "content"); // VIOLATION
   }
}	 
      	 </example>
	</rule>

	<rule class="org.apache.flex.pmd.rules.binding.ChangeWatcherRule"
		message="ChangeWatcher class uses hard coded strings to specify the attribute name, to listen to. Prefer listening to events or setters">
		<priority>1</priority>
		<example>
public final class Title 
{
	private var watcher : ChangeWatcher; // VIOLATION
}		
		</example>
	</rule>

	<rule class="org.apache.flex.pmd.rules.binding.TooLongBindingExpressionRule"
		message="This binding expression is too long ({0} dots maximum, but {1} actually)">
		<description>A Binding expression is executed as soon as one of the bindable attributes changed. If a binding expression contains too many expression, there could be some performance issue.</description>
		<priority>3</priority>
		<properties>
			<property name="maximum">
				<value>3</value>
			</property>
		</properties>
		<example>
		<![CDATA[
<mx:Label text="{ vfrfr.frfr.frf.lala }"/> <!-- Violation-->
		]]>
		</example>
	</rule>
</ruleset>