Spring/spring-statemachine
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jvalkeal
2018-02-15 18:31:42 +02:00
parent 6315509165
commit b5acbf9d98
2 changed files with 8 additions and 7 deletions
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5
spring-statemachine-core/src/main/java/org/springframework/statemachine/support/tree/AbstractIterator.java
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@@ -1,5 +1,5 @@
/*
* Copyright 2015 the original author or authors.
* Copyright 2015-2018 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.
@@ -39,7 +39,7 @@ public abstract class AbstractIterator<T> implements Iterator<T> {
@Override
public final boolean hasNext() {
Assert.state(state != State.FAILED);
Assert.state(state != State.FAILED, "state cannot be null");
switch (state) {
case DONE:
return false;
@@ -78,6 +78,7 @@ public abstract class AbstractIterator<T> implements Iterator<T> {
return next;
}
@Override
public final void remove() {
throw new UnsupportedOperationException("remove");
}

10
spring-statemachine-core/src/main/java/org/springframework/statemachine/support/tree/TreeTraverser.java
View File

@@ -1,5 +1,5 @@
/*
* Copyright 2015 the original author or authors.
* Copyright 2015-2018 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.
@@ -24,14 +24,14 @@ public abstract class TreeTraverser<T> {
/**
* Returns the children of the specified node. Must not contain null.
*
*
* @param root the node
* @return child iterables
*/
public abstract Iterable<T> children(T root);
public final Iterable<T> postOrderTraversal(final T root) {
Assert.notNull(root);
Assert.notNull(root, "root cannot be null");
return new Iterable<T>() {
@Override
public Iterator<T> iterator() {
@@ -49,8 +49,8 @@ public abstract class TreeTraverser<T> {
final Iterator<T> childIterator;
PostOrderNode(T root, Iterator<T> childIterator) {
Assert.notNull(root);
Assert.notNull(childIterator);
Assert.notNull(root, "root cannot be null");
Assert.notNull(childIterator, "childIterator cannot be null");
this.root = root;
this.childIterator = childIterator;
}