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 /*
  * Copyright 2012 Amazon.com, Inc. or its affiliates. All Rights Reserved.
  *
  * Licensed under the Apache License, Version 2.0 (the "License").
  * You may not use this file except in compliance with the License.
  * A copy of the License is located at
  *
  *  http://aws.amazon.com/apache2.0
  *
 * or in the "license" file accompanying this file. This file 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 com.amazonaws.services.simpleworkflow.flow.generic;
Extend this class to implement an activity. There are two types of activity implementation: synchronous and asynchronous. Synchronous ties thread that calls execute(java.lang.String,com.amazonaws.services.simpleworkflow.flow.ActivityExecutionContext) method.

public abstract class ActivityImplementationBase extends ActivityImplementation {

    
    @Override
    public String execute(ActivityExecutionContext context
            throws ActivityFailureExceptionCancellationException {
        ActivityTask task = context.getTask();
        return execute(task.getInput(), context);
    }
    @Override
        return new ActivityTypeExecutionOptions();
    }

    
By default do not register
    @Override
        return null;
    }

    
Execute activity.

Parameters:
input activity input.
Returns:
result of activity execution
Throws:
java.lang.Exception any other exception is converted to status, reason and details using com.amazonaws.services.simpleworkflow.flow.DataConverter.failureToTaskFailed(java.lang.Throwable).
See also:
isManualActivityCompletion()
    protected abstract String execute(String inputActivityExecutionContext context
            throws ActivityFailureExceptionCancellationException;
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