content: /*
   * Copyright 2010-2025 Hyland Software, Inc. and its affiliates.
   *
   * 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.impl.persistence.entity.data.impl.util;
  
  import java.util.List;
  import org.activiti.engine.impl.persistence.entity.ExecutionEntity;
  
  /**
   * Prints a nicely tree-looking overview of the executions.
   *
  
   */
  public class ExecutionTreeStringBuilder {
  
      protected ExecutionEntity executionEntity;
  
      public ExecutionTreeStringBuilder(ExecutionEntity executionEntity) {
          this.executionEntity = executionEntity;
      }
  
      /* See http://stackoverflow.com/questions/4965335/how-to-print-binary-tree-diagram */
      @Override
      public String toString() {
          StringBuilder strb = new StringBuilder();
          strb
              .append(executionEntity.getId())
              .append(" : ")
              .append(executionEntity.getActivityId())
              .append(", parent id ")
              .append(executionEntity.getParentId())
              .append("\r\n");
  
          List<? extends ExecutionEntity> children = executionEntity.getExecutions();
          if (children != null) {
              for (ExecutionEntity childExecution : children) {
                  internalToString(childExecution, strb, "", true);
              }
          }
          return strb.toString();
      }
  
      protected void internalToString(ExecutionEntity execution, StringBuilder strb, String prefix, boolean isTail) {
          strb
              .append(prefix)
              .append(isTail ? "└── " : "├── ")
              .append(execution.getId())
              .append(" : ")
              .append("activityId=" + execution.getActivityId())
              .append(", parent id ")
              .append(execution.getParentId())
              .append(execution.isScope() ? " (scope)" : "")
              .append(execution.isMultiInstanceRoot() ? " (multi instance root)" : "")
              .append("\r\n");
  
          List<? extends ExecutionEntity> children = executionEntity.getExecutions();
          if (children != null) {
              for (int i = 0; i < children.size() - 1; i++) {
                  internalToString(children.get(i), strb, prefix + (isTail ? "    " : "│   "), false);
              }
              if (children.size() > 0) {
                  internalToString(children.get(children.size() - 1), strb, prefix + (isTail ? "    " : "│   "), true);
              }
          }
      }
  }
  