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 /*
  * 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.pig;

An interface that captures a unit of work against an item where an exception might be thrown.

Parameters:
<S> The argument type for the function.
<T> The return type for the function.
<E> The exception type that the function throws.
public interface ExceptionalFunction<S, T, E extends Exception> {

    
Performs a unit of work on item, possibly throwing E in the process.

Parameters:
item The item to perform work against.
Returns:
The result of the computation.
Throws:
E if there was a problem performing the work.
    public T apply(S itemthrows E;
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