content: /*
   * Copyright (C) 2019 The Android Open Source Project
   *
   * 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
   *
   *      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 android.provider;
  
  import static java.lang.annotation.ElementType.FIELD;
  import static java.lang.annotation.RetentionPolicy.RUNTIME;
  
  import android.content.ContentProvider;
  import android.content.ContentValues;
  import android.database.Cursor;
  
  import java.lang.annotation.Documented;
  import java.lang.annotation.Retention;
  import java.lang.annotation.Target;
  
  /**
   * Denotes that a field is a {@link ContentProvider} column. It can be used as a
   * key for {@link ContentValues} when inserting or updating data, or as a
   * projection when querying.
   *
   * @hide
   */
  @Documented
  @Retention(RUNTIME)
  @Target({FIELD})
  public @interface Column {
      /**
       * The {@link Cursor#getType(int)} of the data stored in this column.
       */
      int value();
  
      /**
       * This column is read-only and cannot be defined during insert or updates.
       */
      boolean readOnly() default false;
  }
  