Developer Transformation Guide

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Java Transformation API Methods Overview

On the code entry tabs in the

Java

view in the editor

, you can add API methods to the Java code to define transformation behavior.

To add an API method to the code, expand the

Callable APIs

list in the navigator on the code entry tab, and then double-click the name of the method that you want to add to the code.

Alternatively, you can drag the method from the navigator into the Java code snippet or manually enter the API method in the Java code snippet.

You can add the following API methods to the Java code in a Java transformation:

defineJExpression: Defines a Java expression.
failSession: Throws an exception with an error message and fails the
mapping
.
generateRow: Generates an output row for active Java transformations.
getInRowType: Returns the input type of the current row in the transformation.
incrementErrorCount: Increments the error count for the
mapping
.
invokeJExpression: Invokes a Java expression that you have defined by using the defineJExpression method.
isNull: Checks for a null value in an input column.
logError: Writes an error message to the log.
logInfo: Writes an informational message to the log.
resetNotification: If the Data Integration Service machine runs in restart mode, resets variables that you use in the Java code after a mapping run.
setNull: Sets the value of an output column in an active or passive Java transformation to null.