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Diffstat (limited to 'core/src/main/scala/org/apache/spark/api/java/function/WrappedFunction2.scala')
-rw-r--r-- | core/src/main/scala/org/apache/spark/api/java/function/WrappedFunction2.scala | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/core/src/main/scala/org/apache/spark/api/java/function/WrappedFunction2.scala b/core/src/main/scala/org/apache/spark/api/java/function/WrappedFunction2.scala new file mode 100644 index 0000000000..eb9277c6fb --- /dev/null +++ b/core/src/main/scala/org/apache/spark/api/java/function/WrappedFunction2.scala @@ -0,0 +1,32 @@ +/* + * 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.spark.api.java.function + +import scala.runtime.AbstractFunction2 + +/** + * Subclass of Function2 for ease of calling from Java. The main thing it does is re-expose the + * apply() method as call() and declare that it can throw Exception (since AbstractFunction2.apply + * isn't marked to allow that). + */ +private[spark] abstract class WrappedFunction2[T1, T2, R] extends AbstractFunction2[T1, T2, R] { + @throws(classOf[Exception]) + def call(t1: T1, t2: T2): R + + final def apply(t1: T1, t2: T2): R = call(t1, t2) +} |