1 /* 2 * Copyright (C) 2019 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.provider; 18 19 import static java.lang.annotation.ElementType.FIELD; 20 import static java.lang.annotation.RetentionPolicy.RUNTIME; 21 22 import android.content.ContentProvider; 23 import android.content.ContentValues; 24 import android.database.Cursor; 25 26 import java.lang.annotation.Documented; 27 import java.lang.annotation.Retention; 28 import java.lang.annotation.Target; 29 30 /** 31 * Denotes that a field is a {@link ContentProvider} column. It can be used as a 32 * key for {@link ContentValues} when inserting or updating data, or as a 33 * projection when querying. 34 * 35 * @hide 36 */ 37 @Documented 38 @Retention(RUNTIME) 39 @Target({FIELD}) 40 public @interface Column { 41 /** 42 * The {@link Cursor#getType(int)} of the data stored in this column. 43 */ 44 int value(); 45 46 /** 47 * This column is read-only and cannot be defined during insert or updates. 48 */ 49 boolean readOnly() default false; 50 } 51
