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/* 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.activiti.engine.debug;
import java.util.Iterator;
import java.util.List;
import org.activiti.engine.impl.persistence.entity.ExecutionEntity;
/**
*/
public class ExecutionTree implements Iterable {
protected ExecutionTreeNode root;
public ExecutionTree() {
}
public ExecutionTreeNode getRoot() {
return root;
}
public void setRoot(ExecutionTreeNode root) {
this.root = root;
}
/**
* Looks up the {@link ExecutionEntity} for a given id.
*/
public ExecutionTreeNode getTreeNode(String executionId) {
return getTreeNode(executionId, root);
}
protected ExecutionTreeNode getTreeNode(String executionId, ExecutionTreeNode currentNode) {
if (currentNode.getExecutionEntity().getId().equals(executionId)) {
return currentNode;
}
List children = currentNode.getChildren();
if (currentNode.getChildren() != null && children.size() > 0) {
int index = 0;
while (index < children.size()) {
ExecutionTreeNode result = getTreeNode(executionId, children.get(index));
if (result != null) {
return result;
}
index++;
}
}
return null;
}
@Override
public Iterator iterator() {
return new ExecutionTreeBfsIterator(this.getRoot());
}
public ExecutionTreeBfsIterator bfsIterator() {
return new ExecutionTreeBfsIterator(this.getRoot());
}
/**
* Uses an {@link ExecutionTreeBfsIterator}, but returns the leafs first (so flipped order of BFS)
*/
public ExecutionTreeBfsIterator leafsFirstIterator() {
return new ExecutionTreeBfsIterator(this.getRoot(), true);
}
@Override
public String toString() {
return root != null ? root.toString() : "";
}
}
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