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.metadata.schema.primitive;
  
  import java.io.DataInput;
  import java.io.DataOutput;
  import java.io.IOException;
  
  import org.apache.asterix.column.metadata.PathInfoSerializer;
  import org.apache.asterix.column.metadata.schema.AbstractSchemaNode;
  import org.apache.asterix.column.metadata.schema.ISchemaNodeVisitor;
  import org.apache.asterix.om.types.ATypeTag;
  import org.apache.hyracks.api.exceptions.HyracksDataException;
  
  public class PrimitiveSchemaNode extends AbstractSchemaNode {
      private final int columnIndex;
      private final ATypeTag typeTag;
      private final boolean primaryKey;
  
      public PrimitiveSchemaNode(int columnIndex, ATypeTag typeTag, boolean primaryKey) {
          this.columnIndex = columnIndex;
          this.typeTag = typeTag;
          this.primaryKey = primaryKey;
          this.previousNumberOfColumns = 0;
          this.numberOfColumns = 1;
      }
  
      public PrimitiveSchemaNode(ATypeTag typeTag, DataInput input) throws IOException {
          this.typeTag = typeTag;
          columnIndex = input.readInt();
          primaryKey = input.readBoolean();
          this.previousNumberOfColumns = 1;
          this.numberOfColumns = 1;
      }
  
      public final int getColumnIndex() {
          return columnIndex;
      }
  
      @Override
      public final ATypeTag getTypeTag() {
          return typeTag;
      }
  
      @Override
      public final boolean isNested() {
          return false;
      }
  
      @Override
      public final boolean isObjectOrCollection() {
          return false;
      }
  
      @Override
      public final boolean isCollection() {
          return false;
      }
  
      public final boolean isPrimaryKey() {
          return primaryKey;
      }
  
      @Override
      public final <R, T> R accept(ISchemaNodeVisitor<R, T> visitor, T arg) throws HyracksDataException {
          return visitor.visit(this, arg);
      }
  
      @Override
      public void serialize(DataOutput output, PathInfoSerializer pathInfoSerializer) throws IOException {
          output.write(typeTag.serialize());
          output.writeInt(columnIndex);
          output.writeBoolean(primaryKey);
          pathInfoSerializer.writePathInfo(typeTag, columnIndex, primaryKey);
      }
  }
  