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.calcite.linq4j.tree;
  
  import org.checkerframework.checker.nullness.qual.Nullable;
  
  import java.lang.reflect.Array;
  import java.lang.reflect.Type;
  import java.util.Objects;
  
  import static java.util.Objects.requireNonNull;
  
  /**
   * Length field of a RecordType.
   */
  @SuppressWarnings("rawtypes")
  public class ArrayLengthRecordField implements Types.RecordField {
    private final String fieldName;
    private final Class clazz;
  
    public ArrayLengthRecordField(String fieldName, Class clazz) {
      this.fieldName = requireNonNull(fieldName, "fieldName");
      this.clazz = requireNonNull(clazz, "clazz");
    }
  
    @Override public boolean nullable() {
      return false;
    }
  
    @Override public String getName() {
      return fieldName;
    }
  
    @Override public Type getType() {
      return int.class;
    }
  
    @Override public int getModifiers() {
      return 0;
    }
  
    @Override public Object get(@Nullable Object o) {
      return Array.getLength(requireNonNull(o, "o"));
    }
  
    @Override public Type getDeclaringClass() {
      return clazz;
    }
  
    @Override public boolean equals(@Nullable Object o) {
      if (this == o) {
        return true;
      }
      if (o == null || getClass() != o.getClass()) {
        return false;
      }
  
      ArrayLengthRecordField that = (ArrayLengthRecordField) o;
      return clazz.equals(that.clazz)
          && fieldName.equals(that.fieldName);
    }
  
    @Override public int hashCode() {
      return Objects.hash(fieldName, clazz);
    }
  }
  