Writing User-Defined Extension Classes

Define your own extension functions to use in transformation services.

After you define a class or set of classes containing the extension functions, build a JAR file containing these classes and add it to Sybase WorkSpace. The JAR file can be located anywhere on the file system.

Create a Java project.
Create a new public Java class in the project.

Create public static methods in the new Java class. Choose from the following Parameter and Return types:

Table 1. Parameter types
Java type	Expression.xml
boolean	boolean
byte	integer
short	integer
int	integer
long	integer
float	decimal
double	decimal
java.lang.String	string date time dateTime
org.w3c.dom.Node	anyType
org.w3c.dom.NodeList	node-set

Table 2. Return types
Java type	Expression.xml
boolean	boolean
byte	integer
short	integer
int	integer
long	integer
float	decimal
double	decimal
java.lang.String	string date time dateTime

Examples:

Java byte, short, int, or long parameter should be declared as type, integer, in an expression.xml file.
Depending on the context, java.lang.String parameters can be declared as string, date, time, or dateTime in expressions.xml.

Write implementations for the methods.
Build a JAR file for the project.

Next

Add user-defined extension function JAR files.