Sample Custom Function

package com.acme.functions;
import java.util.List;
import org.activebpel.rt.bpel.function.AeFunction;
import org.activebpel.rt.bpel.function.AeFunctionCallException;
import org.activebpel.rt.bpel.function.AeFunctionContext;
import org.activebpel.rt.bpel.function.AeFunctionUnit;
import org.activebpel.rt.bpel.function.AeUnresolvableException;
import org.activebpel.rt.bpel.function.IAeFunction;
import org.activebpel.rt.bpel.function.IAeFunctionContext;
import org.activebpel.rt.bpel.function.IAeFunctionExecutionContext;
@AeFunctionContext(name = "AcmeContext", namespace = "http://acme.com/functions")
public class GenericFunctionContext implements IAeFunctionContext {
private IAeFunction echoFunction = new EchoFunction();
private IAeFunction companyNameFunction = new CompanyNameFunction();
@Override
@AeFunctionUnit(prefix = "ac", display = "ACME",
hoverText = "Acme company functions", functions = {
@AeFunction(syntax = "${prefix}:echo(${caret})", display = "echo(param)", hoverText = "echo function that returns the given string"),
@AeFunction(syntax = "${prefix}:companyName()", display = "companyName()", hoverText = "Returns company name") })
public IAeFunction getFunction(String aFunctionName)
throws AeUnresolvableException {
if (aFunctionName.equals("echo"))
return echoFunction;
else if (aFunctionName.equals("companyName"))
return companyNameFunction;
return null;
}
private class EchoFunction implements IAeFunction {
@Override
public Object call(IAeFunctionExecutionContext aContext, List aArgs)
throws AeFunctionCallException {
if (aArgs.size() == 1)
return aArgs.get(0);
return null;
}
}
private class CompanyNameFunction implements IAeFunction {
@Override
public Object call(IAeFunctionExecutionContext arg0, List arg1)
throws AeFunctionCallException {
return "acme";
}
}
}