/*
* Copyright 2015-2016 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.statemachine.support;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.springframework.statemachine.ExtendedState;
import org.springframework.statemachine.StateMachineContext;
/**
* Default implementation of a {@link StateMachineContext}.
*
* @author Janne Valkealahti
*
* @param <S> the type of state
* @param <E> the type of event
*/
public class DefaultStateMachineContext<S, E> implements StateMachineContext<S, E> {
private final String id;
private final List<StateMachineContext<S, E>> childs;
private final S state;
private final Map<S, S> historyStates;
private final E event;
private final Map<String, Object> eventHeaders;
private final ExtendedState extendedState;
/**
* Instantiates a new default state machine context.
*
* @param state the state
* @param event the event
* @param eventHeaders the event headers
* @param extendedState the extended state
*/
public DefaultStateMachineContext(S state, E event, Map<String, Object> eventHeaders, ExtendedState extendedState) {
this(new ArrayList<StateMachineContext<S, E>>(), state, event, eventHeaders, extendedState);
}
/**
* Instantiates a new default state machine context.
*
* @param state the state
* @param event the event
* @param eventHeaders the event headers
* @param extendedState the extended state
* @param historyStates the history state mappings
*/
public DefaultStateMachineContext(S state, E event, Map<String, Object> eventHeaders, ExtendedState extendedState,
Map<S, S> historyStates) {
this(new ArrayList<StateMachineContext<S, E>>(), state, event, eventHeaders, extendedState, historyStates);
}
/**
* Instantiates a new default state machine context.
*
* @param state the state
* @param event the event
* @param eventHeaders the event headers
* @param extendedState the extended state
* @param historyStates the history state mappings
* @param id the machine id
*/
public DefaultStateMachineContext(S state, E event, Map<String, Object> eventHeaders, ExtendedState extendedState,
Map<S, S> historyStates, String id) {
this(new ArrayList<StateMachineContext<S, E>>(), state, event, eventHeaders, extendedState, historyStates, id);
}
/**
* Instantiates a new default state machine context.
*
* @param childs the child state machine contexts
* @param state the state
* @param event the event
* @param eventHeaders the event headers
* @param extendedState the extended state
*/
public DefaultStateMachineContext(List<StateMachineContext<S, E>> childs, S state, E event,
Map<String, Object> eventHeaders, ExtendedState extendedState) {
this(childs, state, event, eventHeaders, extendedState, null);
}
/**
* Instantiates a new default state machine context.
*
* @param childs the child state machine contexts
* @param state the state
* @param event the event
* @param eventHeaders the event headers
* @param extendedState the extended state
* @param historyStates the history state mappings
*/
public DefaultStateMachineContext(List<StateMachineContext<S, E>> childs, S state, E event,
Map<String, Object> eventHeaders, ExtendedState extendedState, Map<S, S> historyStates) {
this(childs, state, event, eventHeaders, extendedState, historyStates, null);
}
/**
* Instantiates a new default state machine context.
*
* @param childs the child state machine contexts
* @param state the state
* @param event the event
* @param eventHeaders the event headers
* @param extendedState the extended state
* @param historyStates the history state mappings
* @param id the machine id
*/
public DefaultStateMachineContext(List<StateMachineContext<S, E>> childs, S state, E event,
Map<String, Object> eventHeaders, ExtendedState extendedState, Map<S, S> historyStates, String id) {
this.childs = childs;
this.state = state;
this.event = event;
this.eventHeaders = eventHeaders;
this.extendedState = extendedState;
this.historyStates = historyStates != null ? historyStates : new HashMap<S, S>();
this.id = id;
}
@Override
public String getId() {
return id;
}
@Override
public List<StateMachineContext<S, E>> getChilds() {
return childs;
}
@Override
public S getState() {
return state;
}
@Override
public Map<S, S> getHistoryStates() {
return historyStates;
}
@Override
public E getEvent() {
return event;
}
@Override
public Map<String, Object> getEventHeaders() {
return eventHeaders;
}
@Override
public ExtendedState getExtendedState() {
return extendedState;
}
@Override
public String toString() {
return "DefaultStateMachineContext [id=" + id + ", childs=" + childs + ", state=" + state + ", historyStates=" + historyStates
+ ", event=" + event + ", eventHeaders=" + eventHeaders + ", extendedState=" + extendedState + "]";
}
}