[GitHub] [incubator-daffodil] bsloane1650 commented on a change in pull request #279: WIP: User Defined Functions feature

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bsloane1650 commented on a change in pull request #279: WIP: User Defined Functions feature
URL: https://github.com/apache/incubator-daffodil/pull/279#discussion_r338344414
 
 

 ##########
 File path: daffodil-runtime1/src/main/scala/org/apache/daffodil/dpath/UserDefinedFunctionBase.scala
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 @@ -0,0 +1,93 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.daffodil.dpath
+
+import org.apache.daffodil.udf.UserDefinedFunction
+import org.apache.daffodil.udf.UserDefinedFunctionService.UserDefinedFunctionMethod
+import java.lang.reflect.Method
+import java.lang.reflect.InvocationTargetException
+import org.apache.daffodil.udf.exceptions.UserDefinedFunctionFatalException
+import org.apache.daffodil.udf.exceptions.UserDefinedFunctionProcessingError
+import org.apache.daffodil.processors.ProcessingError
+import org.apache.daffodil.util.Maybe
+import org.apache.daffodil.exceptions.SchemaFileLocation
+import org.apache.daffodil.api.DataLocation
+import org.apache.daffodil.exceptions.Abort
+
+/**
+ * User Defined Function Exception class to wrap processing errors from the UDF
+ * into Daffodil Processing Errors
+ */
+case class UserDefinedFunctionProcessingErrorException(
+  errorInfo: String,
+  schemaContext: Maybe[SchemaFileLocation],
+  dataContext: Maybe[DataLocation],
+  errorCause: Maybe[Throwable],
+  errorStr: Maybe[String])
+  extends ProcessingError(errorInfo, schemaContext, dataContext, errorCause, errorStr)
+
+/**
+ * User Defined Function Exception class to wrap fatal errors from the UDF
+ * into Daffodil Aborts
+ */
+case class UserDefinedFunctionFatalErrorException(description: String = "", cause: Throwable, classOfInterest: String = "")
+  extends Abort(description ++ cause.getMessage) {
+
+  if (classOfInterest.nonEmpty) {
+    val curStackTrace = cause.getStackTrace
+    val indexLastUdfEntry = curStackTrace.lastIndexWhere(_.getClassName == classOfInterest)
+    val finalStackTrace = if (indexLastUdfEntry >= 0) curStackTrace.slice(0, indexLastUdfEntry + 1) else curStackTrace
+    this.setStackTrace(finalStackTrace)
+  }
 
 Review comment:
   This block probably deserves a comment

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