transform-function-factory-java.md
The TransformFunctionFactory API provides the following methods for extension by subclasses:
public abstract TransformFunction createTransformFunction(ServerInterface srvInterface);
public abstract void getPrototype(ServerInterface srvInterface, ColumnTypes argTypes, ColumnTypes returnType);
public abstract void getReturnType(ServerInterface srvInterface, SizedColumnTypes argTypes,
SizedColumnTypes returnType) throws UdfException;
public void getParameterType(ServerInterface srvInterface, SizedColumnTypes parameterTypes);