org.springframework.webflow.execution.repository.continuation.FlowExecutionContinuation Maven / Gradle / Ivy
/*
* Copyright 2002-2006 the original author or authors.
*
* 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
*
* 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.springframework.webflow.execution.repository.continuation;
import java.io.Serializable;
import org.springframework.webflow.execution.FlowExecution;
/**
* A snapshot of a flow execution that can be restored from and serialized to a byte
* array.
*
* @see FlowExecutionContinuationFactory
*
* @author Erwin Vervaet
* @author Keith Donald
*/
public abstract class FlowExecutionContinuation implements Serializable {
/**
* Restores the flow execution wrapped in this continuation.
* @return the unmarshalled flow execution
* @throws ContinuationUnmarshalException when there is a problem unmarshalling
* this continuation
*/
public abstract FlowExecution unmarshal() throws ContinuationUnmarshalException;
/**
* Converts this continuation to a byte array for convenient serialization.
* @return this as a byte array
*/
public abstract byte[] toByteArray();
}