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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.bpmn.model.FlowElement;
import org.activiti.bpmn.model.SequenceFlow;
import org.activiti.engine.impl.persistence.entity.ExecutionEntity;
/**
*/
public class ExecutionTreeNode implements Iterable {
protected ExecutionEntity executionEntity;
protected ExecutionTreeNode parent;
protected List children;
public ExecutionTreeNode(ExecutionEntity executionEntity) {
this.executionEntity = executionEntity;
}
public ExecutionEntity getExecutionEntity() {
return executionEntity;
}
public void setExecutionEntity(ExecutionEntity executionEntity) {
this.executionEntity = executionEntity;
}
public ExecutionTreeNode getParent() {
return parent;
}
public void setParent(ExecutionTreeNode parent) {
this.parent = parent;
}
public List getChildren() {
return children;
}
public void setChildren(List children) {
this.children = children;
}
@Override
public Iterator iterator() {
return new ExecutionTreeBfsIterator(this);
}
public ExecutionTreeBfsIterator leafsFirstIterator() {
return new ExecutionTreeBfsIterator(this, true);
}
/* See http://stackoverflow.com/questions/4965335/how-to-print-binary-tree-diagram */
@Override
public String toString() {
StringBuilder strb = new StringBuilder();
strb.append(getExecutionEntity().getId());
if (getExecutionEntity().getActivityId() != null) {
strb.append(" : " + getExecutionEntity().getActivityId());
}
if (getExecutionEntity().getParentId() != null) {
strb.append(", parent id " + getExecutionEntity().getParentId());
}
if (getExecutionEntity().isProcessInstanceType()) {
strb.append(" (process instance)");
}
strb.append(System.lineSeparator());
if (children != null) {
for (ExecutionTreeNode childNode : children) {
childNode.internalToString(strb, "", true);
}
}
return strb.toString();
}
protected void internalToString(StringBuilder strb, String prefix, boolean isTail) {
strb.append(prefix + (isTail ? "└── " : "├── ") + getExecutionEntity().getId() + " : "
+ getCurrentFlowElementId()
+ ", parent id " + getExecutionEntity().getParentId()
+ (getExecutionEntity().isActive() ? " (active)" : " (not active)")
+ (getExecutionEntity().isScope() ? " (scope)" : "")
+ (getExecutionEntity().isMultiInstanceRoot() ? " (multi instance root)" : "")
+ (getExecutionEntity().isEnded() ? " (ended)" : "")
+ System.lineSeparator());
if (children != null) {
for (int i = 0; i < children.size() - 1; i++) {
children.get(i).internalToString(strb, prefix + (isTail ? " " : "│ "), false);
}
if (children.size() > 0) {
children.get(children.size() - 1).internalToString(strb, prefix + (isTail ? " " : "│ "), true);
}
}
}
protected String getCurrentFlowElementId() {
FlowElement flowElement = getExecutionEntity().getCurrentFlowElement();
if (flowElement instanceof SequenceFlow) {
SequenceFlow sequenceFlow = (SequenceFlow) flowElement;
return sequenceFlow.getSourceRef() + " -> " + sequenceFlow.getTargetRef();
} else if (flowElement != null) {
return flowElement.getId() + " (" + flowElement.getClass().getSimpleName();
} else {
return "";
}
}
}
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