content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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.apache.asterix.column.assembler;
  
  import org.apache.hyracks.storage.am.lsm.btree.column.error.ColumnarValueException;
  
  import com.fasterxml.jackson.databind.node.ObjectNode;
  
  public class AssemblerState {
      private EndOfRepeatedGroupAssembler currentGroup;
  
      public AssemblerState() {
          // Initially, not in a group
          currentGroup = null;
      }
  
      public EndOfRepeatedGroupAssembler enterRepeatedGroup(EndOfRepeatedGroupAssembler newGroup) {
          EndOfRepeatedGroupAssembler previousGroup = currentGroup;
          currentGroup = newGroup;
          return previousGroup;
      }
  
      public boolean isCurrentGroup(EndOfRepeatedGroupAssembler group) {
          return currentGroup == group;
      }
  
      public void exitRepeatedGroup(EndOfRepeatedGroupAssembler previousGroup) {
          currentGroup = previousGroup;
      }
  
      public boolean isInGroup() {
          return currentGroup != null;
      }
  
      public void appendStateInfo(ColumnarValueException e) {
          ObjectNode stateNode = e.createNode(getClass().getSimpleName());
          if (isInGroup()) {
              stateNode.put("inGroup", true);
              currentGroup.reader.appendReaderInformation(stateNode.putObject("endOfGroupReader"));
          } else {
              stateNode.put("inGroup", false);
          }
      }
  }
  