PLEASE NOTE: This documentation applies to Pentaho 8.3 and earlier. For Pentaho 9.0 and later, see Java Filter on the Pentaho Enterprise Edition documentation site.
Description
The Java Filter Step allows the stream to be filtered using user defined Java expressions. The input stream, coming from one or more steps, can be redirected to two different steps based on the evaluation of the written expression.
In other words, the user is able to perform an if-statement to filter the data stream with pure java expressions:
if( Condition )
{matching-step}
else
{non-matching step}
Options
Option | Description |
|---|---|
Step Name | Name of the step; this name has to be unique in a single transformation. |
Destination step for matching rows (optional) | The rows for which the written condition is evaluated to true are sent to this step |
Destination step for non-matching rows (optional) | The rows for which the written condition is evaluated to false are sent to this step |
Condition (Java Expression) | Defines the Java condition on which to filter the data. See examples below |
Examples
These code samples applies to the Condition (Java Expression) field.
Filters a string that contains white space
field.contains(" ");
Filters a string that is identical to a constant string
field.equals("Positive");
Filters a boolean value
field == Boolean.TRUE