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.om.base;
  
  import org.apache.asterix.om.types.ARecordType;
  import org.apache.asterix.om.utils.RecordUtil;
  import org.apache.hyracks.util.JSONUtil;
  
  import com.fasterxml.jackson.databind.ObjectMapper;
  import com.fasterxml.jackson.databind.node.ArrayNode;
  import com.fasterxml.jackson.databind.node.ObjectNode;
  
  public class ARecord implements IAObject {
      public static final ARecord EMPTY_OPEN_RECORD = new ARecord(RecordUtil.FULLY_OPEN_RECORD_TYPE, new IAObject[] {});
  
      protected ARecordType type;
      protected IAObject[] fields;
  
      public ARecord(ARecordType type, IAObject[] fields) {
          this.type = type;
          this.fields = fields;
      }
  
      @Override
      public ARecordType getType() {
          return type;
      }
  
      public boolean isOpen() {
          return type.isOpen();
      }
  
      // efficient way of retrieving the value of a field; pos starts from 0
      public IAObject getValueByPos(int pos) {
          return fields[pos];
      }
  
      public int numberOfFields() {
          return fields.length;
      }
  
      @Override
      public boolean deepEqual(IAObject obj) {
          return equals(obj);
      }
  
      @Override
      public boolean equals(Object obj) {
          if (!(obj instanceof ARecord)) {
              return false;
          }
          ARecord r = (ARecord) obj;
          if (!type.deepEqual(r.type)) {
              return false;
          }
          return InMemUtils.deepEqualArrays(fields, r.fields);
      }
  
      @Override
      public int hash() {
          int h = 0;
          for (int i = 0; i < fields.length; i++) {
              h += 31 * h + fields[i].hash();
          }
          return h;
      }
  
      @Override
      public String toString() {
          StringBuilder sb = new StringBuilder();
          sb.append("{ ");
          if (fields != null) {
              for (int i = 0; i < fields.length; i++) {
                  if (i > 0) {
                      sb.append(", ");
                  }
                  JSONUtil.quoteAndEscape(sb, type.getFieldNames()[i]);
                  sb.append(": ");
                  sb.append(fields[i]);
              }
          }
          sb.append(" }");
          return sb.toString();
      }
  
      @Override
      public ObjectNode toJSON() {
          ObjectMapper om = new ObjectMapper();
          ObjectNode json = om.createObjectNode();
  
          ArrayNode record = om.createArrayNode();
          for (int i = 0; i < fields.length; i++) {
              ObjectNode item = om.createObjectNode();
              item.set(type.getFieldNames()[i], fields[i].toJSON());
              record.add(item);
          }
          json.set("ARecord", record);
  
          return json;
      }
  }
  