// Path: cloud-spanner-r2dbc/src/main/java/com/google/cloud/spanner/r2dbc/util/Assert.java
// public class Assert {
// 
//   private Assert() {
//     // Prevent instantiation.
//   }
// 
//   /**
//    * Checks that a specified object reference is not {@code null} and throws a customized
//    * {@link IllegalArgumentException} if it is.
//    *
//    * @param t the object reference to check for nullity
//    * @param message informative message to be used in the event that an
//    *     {@link IllegalArgumentException} is thrown
//    * @param <T> the type of object reference
//    *
//    * @return the original object {@code t}
//    *
//    * @throws IllegalArgumentException if {@code o} is {@code null}
//    */
//   public static <T> T requireNonNull(@Nullable T t, String message) {
//     if (t == null) {
//       throw new IllegalArgumentException(message);
//     }
// 
//     return t;
//   }
// 
//   /**
//    * Checks that a specified object reference is not {@code null} or an empty string, and throws a
//    * customized {@link IllegalArgumentException} if it is.
//    *
//    * @param s string to check
//    * @param message informative message to be used in the event that an
//    *     {@link IllegalArgumentException} is thrown
//    *
//    * @return the original string {@code s}
//    *
//    * @throws IllegalArgumentException if {@code o} is {@code null}
//    */
//   public static ByteString requireNonEmpty(@Nullable ByteString s, String message) {
//     if (s == null || s.isEmpty()) {
//       throw new IllegalArgumentException(message);
//     }
// 
//     return s;
//   }
// 
//   /**
//    * Checks that a specified object reference is not {@code null} or an empty string, and throws a
//    * customized {@link IllegalArgumentException} if it is.
//    *
//    * @param s string to check
//    * @param message informative message to be used in the event that an
//    *     {@link IllegalArgumentException} is thrown
//    *
//    * @return the original string {@code s}
//    *
//    * @throws IllegalArgumentException if {@code o} is {@code null}
//    */
//   public static String requireNonEmpty(@Nullable String s, String message) {
//     if (s == null || s.isEmpty()) {
//       throw new IllegalArgumentException(message);
//     }
// 
//     return s;
//   }
// 
// }


import com.google.cloud.spanner.Struct;
import com.google.cloud.spanner.r2dbc.util.Assert;
import io.r2dbc.spi.Row;
import io.r2dbc.spi.RowMetadata;
/*
 * Copyright 2019-2020 Google LLC
 *
 * Licensed 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
 *
 *     https://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.google.cloud.spanner.r2dbc.v2;


class SpannerClientLibraryRow implements Row {
  private Struct rowFields;

  public SpannerClientLibraryRow(Struct rowFields) {
    Assert.requireNonNull(rowFields, "rowFields must not be null");
    this.rowFields = rowFields;
  }

  @Override
// Path: cloud-spanner-r2dbc/src/main/java/com/google/cloud/spanner/r2dbc/util/Assert.java
// public class Assert {
// 
//   private Assert() {
//     // Prevent instantiation.
//   }
// 
//   /**
//    * Checks that a specified object reference is not {@code null} and throws a customized
//    * {@link IllegalArgumentException} if it is.
//    *
//    * @param t the object reference to check for nullity
//    * @param message informative message to be used in the event that an
//    *     {@link IllegalArgumentException} is thrown
//    * @param <T> the type of object reference
//    *
//    * @return the original object {@code t}
//    *
//    * @throws IllegalArgumentException if {@code o} is {@code null}
//    */
//   public static <T> T requireNonNull(@Nullable T t, String message) {
//     if (t == null) {
//       throw new IllegalArgumentException(message);
//     }
// 
//     return t;
//   }
// 
//   /**
//    * Checks that a specified object reference is not {@code null} or an empty string, and throws a
//    * customized {@link IllegalArgumentException} if it is.
//    *
//    * @param s string to check
//    * @param message informative message to be used in the event that an
//    *     {@link IllegalArgumentException} is thrown
//    *
//    * @return the original string {@code s}
//    *
//    * @throws IllegalArgumentException if {@code o} is {@code null}
//    */
//   public static ByteString requireNonEmpty(@Nullable ByteString s, String message) {
//     if (s == null || s.isEmpty()) {
//       throw new IllegalArgumentException(message);
//     }
// 
//     return s;
//   }
// 
//   /**
//    * Checks that a specified object reference is not {@code null} or an empty string, and throws a
//    * customized {@link IllegalArgumentException} if it is.
//    *
//    * @param s string to check
//    * @param message informative message to be used in the event that an
//    *     {@link IllegalArgumentException} is thrown
//    *
//    * @return the original string {@code s}
//    *
//    * @throws IllegalArgumentException if {@code o} is {@code null}
//    */
//   public static String requireNonEmpty(@Nullable String s, String message) {
//     if (s == null || s.isEmpty()) {
//       throw new IllegalArgumentException(message);
//     }
// 
//     return s;
//   }
// 
// }


// Path: cloud-spanner-r2dbc/src/main/java/com/google/cloud/spanner/r2dbc/v2/SpannerClientLibraryRow.java
import com.google.cloud.spanner.Struct;
import com.google.cloud.spanner.r2dbc.util.Assert;
import io.r2dbc.spi.Row;
import io.r2dbc.spi.RowMetadata;

/*
 * Copyright 2019-2020 Google LLC
 *
 * Licensed 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
 *
 *     https://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.google.cloud.spanner.r2dbc.v2;


class SpannerClientLibraryRow implements Row {
  private Struct rowFields;

  public SpannerClientLibraryRow(Struct rowFields) {
    Assert.requireNonNull(rowFields, "rowFields must not be null");
    this.rowFields = rowFields;
  }

  @Override
  public <T> T get(int index, Class<T> type) {