Mule ESB: Creating Custom Fliter

In this tip, I will show you how to create a very simple Custom Filter inside your Mule flow.

At first, you need to create a Java class implementing the org.mule.api.routing.filter.Filter, you have to override the accept() method. Check out the below sample filter which can be used to Filter out Input Streams java.io.InputStream.

package org.rahul.mule.filter;

import org.mule.api.MuleMessage;
import org.mule.api.routing.filter.Filter;
public class InputStreamFilter implements  Filter{

    @Override
    public boolean accept(MuleMessage message) {
        
        Object obj = message.getPayload();

        /* Return Payload is a Stream or not*/
        return obj instanceof java.io.InputStream;
    }
}

Provide this class in Custom Filter component from the palette.

Your custom filter is now ready to use!

  <custom-filter class="org.rahul.mule.filter.InputStreamFilter" doc:name="Streamable Filter">           
        </custom-filter>

I hope this helps!