/*
* Copyright 2016-2017 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.config.configurers;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.springframework.statemachine.action.Action;
import org.springframework.statemachine.action.Actions;
import org.springframework.statemachine.config.builders.StateMachineTransitionBuilder;
import org.springframework.statemachine.config.builders.StateMachineTransitionConfigurer;
import org.springframework.statemachine.config.common.annotation.AnnotationConfigurerAdapter;
import org.springframework.statemachine.config.model.JunctionData;
import org.springframework.statemachine.config.model.TransitionsData;
import org.springframework.statemachine.guard.Guard;
/**
* Default implementation of a {@link JunctionTransitionConfigurer}.
*
* @author Janne Valkealahti
*
* @param <S> the type of state
* @param <E> the type of event
*/
public class DefaultJunctionTransitionConfigurer<S, E>
extends AnnotationConfigurerAdapter<TransitionsData<S, E>, StateMachineTransitionConfigurer<S, E>, StateMachineTransitionBuilder<S, E>>
implements JunctionTransitionConfigurer<S, E> {
private S source;
private JunctionData<S, E> first;
private final List<JunctionData<S, E>> thens = new ArrayList<JunctionData<S, E>>();
private JunctionData<S, E> last;
@Override
public void configure(StateMachineTransitionBuilder<S, E> builder) throws Exception {
List<JunctionData<S, E>> junctions = new ArrayList<JunctionData<S, E>>();
if (first != null) {
junctions.add(first);
}
junctions.addAll(thens);
if (last != null) {
junctions.add(last);
}
builder.addJunction(source, junctions);
}
@Override
public JunctionTransitionConfigurer<S, E> source(S source) {
this.source = source;
return this;
}
@Override
public JunctionTransitionConfigurer<S, E> first(S target, Guard<S, E> guard) {
return first(target, guard, null);
}
@Override
public JunctionTransitionConfigurer<S, E> first(S target, Guard<S, E> guard, Action<S, E> action) {
return first(target, guard, action, null);
}
@Override
public JunctionTransitionConfigurer<S, E> first(S target, Guard<S, E> guard, Action<S, E> action, Action<S, E> error) {
Collection<Action<S, E>> actions = new ArrayList<>();
if (action != null) {
actions.add(error != null ? Actions.errorCallingAction(action, error) : action);
}
this.first = new JunctionData<S, E>(source, target, guard, actions);
return this;
}
@Override
public JunctionTransitionConfigurer<S, E> then(S target, Guard<S, E> guard) {
return then(target, guard, null);
}
@Override
public JunctionTransitionConfigurer<S, E> then(S target, Guard<S, E> guard, Action<S, E> action) {
return then(target, guard, action, null);
}
@Override
public JunctionTransitionConfigurer<S, E> then(S target, Guard<S, E> guard, Action<S, E> action, Action<S, E> error) {
Collection<Action<S, E>> actions = new ArrayList<>();
if (action != null) {
actions.add(error != null ? Actions.errorCallingAction(action, error) : action);
}
thens.add(new JunctionData<S, E>(source, target, guard, actions));
return this;
}
@Override
public JunctionTransitionConfigurer<S, E> last(S target) {
return last(target, null);
}
@Override
public JunctionTransitionConfigurer<S, E> last(S target, Action<S, E> action) {
return last(target, action, null);
}
@Override
public JunctionTransitionConfigurer<S, E> last(S target, Action<S, E> action, Action<S, E> error) {
Collection<Action<S, E>> actions = new ArrayList<>();
if (action != null) {
actions.add(error != null ? Actions.errorCallingAction(action, error) : action);
}
this.last = new JunctionData<S, E>(source, target, null, actions);
return this;
}
}