Mule applications can use AND filters to determine if a message passes through a flow. The example shows an AND filter that checks if a SOAP payload contains the words "mule" and "soft" - if it contains both words, it logs a success message. The AND filter allows combining multiple expression filters to specify complex logical conditions for a message to satisfy.

1. And Filter

2. Abstract
 The main motto of this PPT is How to use And Filter
in our applications.

3. Introduction
 Mule bundles more than a dozen Filters that
determine whether a message can proceed through
an application flow. The simplest filters implement
basic logic operators (such as and, or, and not), but
these simple elements can be combined in various
ways to specify complex logical conditions.

4. Example

5. .mflow
<?xml version="1.0" encoding="UTF-8"?>
<mule xmlns:http="http://www.mulesoft.org/schema/mule/http"
xmlns="http://www.mulesoft.org/schema/mule/core"
xmlns:doc="http://www.mulesoft.org/schema/mule/documentation"
xmlns:spring="http://www.springframework.org/schema/beans" version="EE-3.4.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-current.xsd
http://www.mulesoft.org/schema/mule/core
http://www.mulesoft.org/schema/mule/core/current/mule.xsd
http://www.mulesoft.org/schema/mule/http http://www.mulesoft.org/schema/mule/http/current/mule-
http.xsd">
<flow name="AndFilterFlow1" doc:name="AndFilterFlow1">
<http:inbound-endpoint exchange-pattern="request-response" host="localhost" port="8089"
path="andfilter" doc:name="HTTP"/>
<logger message="--entered into the flow" level="INFO" doc:name="Logger"/>
<set-payload value="&lt;Soap-
Env&gt;&lt;Body&gt;&lt;Path&gt;mulesoft&lt;/Path&gt;&lt;/Body&gt;&lt;/Soap-Env&gt;" doc:name="Set
Payload"/>
<and-filter doc:name="And">
<expression-filter expression="#[xpath('/Soap-Env/Body/Path/text()').text.contains('mule')]"/>
<expression-filter expression="#[xpath('/Soap-Env/Body/Path/text()').text.contains('soft')]"/>
</and-filter>
<logger message="--Success" level="INFO" doc:name="Logger"/>
</flow>
</mule>

6.  Output:
INFO 2015-12-12 06:49:37,897 [main] org.mule.DefaultMuleContext:
**********************************************************************
* Application: AndFilter *
* OS encoding: Cp1252, Mule encoding: UTF-8 *
* *
* Agents Running: *
* Clustering Agent *
* JMX Agent *
**********************************************************************
INFO 2015-12-12 06:49:37,898 [main] org.mule.module.launcher.MuleDeploymentService:
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ Started app 'AndFilter' +
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
INFO 2015-12-12 06:49:41,558 [[AndFilter].connector.http.mule.default.receiver.02]
org.mule.api.processor.LoggerMessageProcessor: --entered into the flow
INFO 2015-12-12 06:49:42,214 [[AndFilter].connector.http.mule.default.receiver.02]
org.mule.api.processor.LoggerMessageProcessor: --Success

7.  Flow of execution:
1. URL to trigger the service from browser
http://localhost:8089/andfilter
2. AND filter checks whether the request contains
‘mule’ and ‘soft’ or not?, if yes, it will print a message
‘Success’, else it will not go further.

8. References
 https://docs.mulesoft.com/mule-user-
guide/v/3.7/filters