olabusayoT commented on a change in pull request #273: WIP: Add User Defined
Functions Capability
URL: https://github.com/apache/incubator-daffodil/pull/273#discussion_r334018600
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File path:
daffodil-test/src/test/java/org/goodudfs/example/StringFunctions/StringFunctionsProvider.java
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@@ -0,0 +1,25 @@
+package org.goodudfs.example.StringFunctions;
+
+import org.apache.daffodil.udf.*;
+
+public class StringFunctionsProvider extends UDFunctionProvider {
+ public StringFunctionsProvider() {
+ super.setFunctionClasses( new Class<?>[] { Replace.class,
Compare.class } );
+ }
+
+ public Object lookupFunctionClass(String namespace, String name) {
+ Object functionClass = null;
+
+ String nn = String.join("_", namespace, name);
+
+ switch (nn) {
+ case "com.ext.UDFunction.StringFunctions_replace":
+ functionClass = new Replace();
+ break;
+ case "com.ext.UDFunction.StringFunctions_compare":
+ functionClass = new Compare();
+ break;
+ }
+ return functionClass;
Review comment:
Ahh yes, this was definitely misnamed and has been updated to actually do
the function class and evaluate method checks. We now return the
functionClassObject, evaluateMethod, paramTypes and retType. So it's called
lookupUDFCallingInfo. Any naming suggestions welcome!
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