CustomHandlerBase.java example

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 * Copyright 2017 Capital One Services, LLC and Bitwise, Inc.
 * Licensed 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
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package hydrograph.engine.cascading.assembly.handlers;

import cascading.operation.FunctionCall;
import cascading.operation.OperationCall;
import cascading.tuple.Fields;
import hydrograph.engine.cascading.assembly.context.CustomFunctionContext;

import java.io.Serializable;

public interface CustomHandlerBase extends Serializable {

	public Fields getInputFields();

	public Fields getOutputFields();

	public Object onPrepare(OperationCall<CustomFunctionContext> call);

	public void perform(FunctionCall<CustomFunctionContext> call);

	public void onCleanup(FunctionCall<CustomFunctionContext> call);

}