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.types;
  
  import java.util.Objects;
  
  import org.apache.hyracks.api.exceptions.HyracksDataException;
  import org.apache.hyracks.api.io.IJsonSerializable;
  import org.apache.hyracks.api.io.IPersistedResourceRegistry;
  
  import com.fasterxml.jackson.databind.JsonNode;
  import com.fasterxml.jackson.databind.node.ObjectNode;
  
  public abstract class AbstractCollectionType extends AbstractComplexType {
  
      private static final long serialVersionUID = 1L;
      private static final String ITEM_TYPE_FIELD = "itemType";
      private IAType itemType;
  
      AbstractCollectionType(IAType itemType, String typeName) {
          super(typeName);
          this.itemType = Objects.requireNonNull(itemType);
      }
  
      public boolean isTyped() {
          // TODO(ali): this should be removed. itemType is already enforced to be NonNull
          return itemType != null;
      }
  
      public IAType getItemType() {
          return itemType;
      }
  
      public void setItemType(IAType itemType) {
          this.itemType = Objects.requireNonNull(itemType);
      }
  
      @Override
      public IAType getType() {
          return BuiltinType.ALL_TYPE;
      }
  
      @Override
      public void generateNestedDerivedTypeNames() {
          if (itemType.getTypeTag().isDerivedType() && itemType.getTypeName() == null) {
              AbstractComplexType nestedType = (AbstractComplexType) itemType;
              nestedType.setTypeName(getTypeName() + "_Item");
              nestedType.generateNestedDerivedTypeNames();
          }
      }
  
      @Override
      public boolean containsType(IAType type) {
          return isTyped() && itemType.getTypeName().equals(type.getTypeName());
      }
  
      @Override
      public <R, T> R accept(IATypeVisitor<R, T> visitor, T arg) {
          return visitor.visit(this, arg);
      }
  
      JsonNode convertToJson(IPersistedResourceRegistry registry, Class<? extends IJsonSerializable> clazz, long version)
              throws HyracksDataException {
          final ObjectNode jsonObject = registry.getClassIdentifier(clazz, version);
          addToJson(jsonObject);
          jsonObject.set(ITEM_TYPE_FIELD, itemType.toJson(registry));
          return jsonObject;
      }
  
      static IJsonSerializable convertToObject(IPersistedResourceRegistry registry, JsonNode json, boolean ordered)
              throws HyracksDataException {
          String typeName = json.get(TYPE_NAME_FIELD).asText();
          JsonNode itemTypeJson = json.get(ITEM_TYPE_FIELD);
          IAType itemType = (IAType) registry.deserialize(itemTypeJson);
          return ordered ? new AOrderedListType(itemType, typeName) : new AUnorderedListType(itemType, typeName);
      }
  }
  