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 com.datastax.oss.driver.internal.core.cql;
  
  import com.datastax.oss.driver.api.core.CqlIdentifier;
  import com.datastax.oss.driver.api.core.cql.ColumnDefinition;
  import com.datastax.oss.driver.api.core.cql.ColumnDefinitions;
  import com.datastax.oss.driver.api.core.detach.AttachmentPoint;
  import com.datastax.oss.driver.internal.core.data.IdentifierIndex;
  import edu.umd.cs.findbugs.annotations.NonNull;
  import java.io.InvalidObjectException;
  import java.io.ObjectInputStream;
  import java.io.Serializable;
  import java.util.ArrayList;
  import java.util.Iterator;
  import java.util.List;
  import net.jcip.annotations.Immutable;
  
  @Immutable
  public class DefaultColumnDefinitions implements ColumnDefinitions, Serializable {
  
    public static ColumnDefinitions valueOf(List<ColumnDefinition> definitions) {
      return definitions.isEmpty()
          ? EmptyColumnDefinitions.INSTANCE
          : new DefaultColumnDefinitions(definitions);
    }
  
    private final List<ColumnDefinition> definitions;
    private final IdentifierIndex index;
  
    private DefaultColumnDefinitions(List<ColumnDefinition> definitions) {
      assert definitions != null && definitions.size() > 0;
      this.definitions = definitions;
      this.index = buildIndex(definitions);
    }
  
    @Override
    public int size() {
      return definitions.size();
    }
  
    @NonNull
    @Override
    public ColumnDefinition get(int i) {
      return definitions.get(i);
    }
  
    @NonNull
    @Override
    public Iterator<ColumnDefinition> iterator() {
      return definitions.iterator();
    }
  
    @Override
    public boolean contains(@NonNull String name) {
      return index.firstIndexOf(name) >= 0;
    }
  
    @Override
    public boolean contains(@NonNull CqlIdentifier id) {
      return index.firstIndexOf(id) >= 0;
    }
  
    @NonNull
    @Override
    public List<Integer> allIndicesOf(@NonNull String name) {
      return index.allIndicesOf(name);
    }
  
    @Override
    public int firstIndexOf(@NonNull String name) {
      return index.firstIndexOf(name);
    }
  
    @NonNull
    @Override
    public List<Integer> allIndicesOf(@NonNull CqlIdentifier id) {
      return index.allIndicesOf(id);
    }
  
    @Override
    public int firstIndexOf(@NonNull CqlIdentifier id) {
      return index.firstIndexOf(id);
    }
  
    @Override
    public boolean isDetached() {
      return definitions.get(0).isDetached();
    }
  
    @Override
    public void attach(@NonNull AttachmentPoint attachmentPoint) {
      for (ColumnDefinition definition : definitions) {
        definition.attach(attachmentPoint);
      }
    }
  
    private static IdentifierIndex buildIndex(List<ColumnDefinition> definitions) {
      List<CqlIdentifier> identifiers = new ArrayList<>(definitions.size());
      for (ColumnDefinition definition : definitions) {
        identifiers.add(definition.getName());
      }
      return new IdentifierIndex(identifiers);
    }
  
    /**
     * @serialData The list of definitions (the identifier index is reconstructed at deserialization).
     */
    private Object writeReplace() {
      return new SerializationProxy(this);
    }
  
    private void readObject(@SuppressWarnings("unused") ObjectInputStream stream)
        throws InvalidObjectException {
      // Should never be called since we serialized a proxy
      throw new InvalidObjectException("Proxy required");
    }
  
    private static class SerializationProxy implements Serializable {
  
      private static final long serialVersionUID = 1;
  
      private final List<ColumnDefinition> definitions;
  
      private SerializationProxy(DefaultColumnDefinitions columnDefinitions) {
        this.definitions = columnDefinitions.definitions;
      }
  
      private Object readResolve() {
        return new DefaultColumnDefinitions(this.definitions);
      }
    }
  }
  