https://source.android.com/ 
/*
 * Copyright (C) 2017 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 android.annotation.SystemApi;
import android.net.Uri;


A set of constants for implementing a time zone data content provider, which is used by the time
zone updater application.

@hide
/**
 * A set of constants for implementing a time zone data content provider, which is used by the time
 * zone updater application.
 *
 * @hide
 */
@SystemApi
public final class TimeZoneRulesDataContract {

    private TimeZoneRulesDataContract() {}

    
The authority that must be used for the time zone data content provider.
To be accepted by the time zone updater application it must be exposed by the
package specified in the config_timeZoneRulesDataPackage config value.

/**
     * The authority that <em>must</em> be used for the time zone data content provider.
     * To be accepted by the time zone updater application it <em>must</em> be exposed by the
     * package specified in the config_timeZoneRulesDataPackage config value.
     */
    public static final String AUTHORITY = "com.android.timezone";

    
A content:// style uri to the authority for the time zone data content provider 
/** A content:// style uri to the authority for the time zone data content provider */
    private static final Uri AUTHORITY_URI = Uri.parse("content://" + AUTHORITY);

    
Defines fields exposed through the CONTENT_URI for describing a time zone distro operation. 
/**
     * Defines fields exposed through the {@link Operation#CONTENT_URI} for describing a time zone
     * distro operation.
     */
    public static final class Operation {

        
Not instantiable. 
/** Not instantiable. */
        private Operation() {
        }

        
The content:// style URI for determining what type of update is available.

The URI can be queried using ContentProvider.query(Uri, String[], String, String[], String); the result will be a cursor with a single row. If the COLUMN_TYPE column is TYPE_INSTALL then ContentProvider.openFile(Uri, String) can be used with "r" mode to obtain the binary data. 
/**
         * The content:// style URI for determining what type of update is available.
         *
         * <p>The URI can be queried using
         * {@link android.content.ContentProvider#query(Uri, String[], String, String[], String)};
         * the result will be a cursor with a single row. If the {@link Operation#COLUMN_TYPE}
         * column is {@link Operation#TYPE_INSTALL} then
         * {@link android.content.ContentProvider#openFile(Uri, String)} can be used with "r" mode
         * to obtain the binary data.
         */
        public static final Uri CONTENT_URI = Uri.withAppendedPath(AUTHORITY_URI, "operation");

        
The String column of the CONTENT_URI that provides an int specifying the type of operation to perform. See TYPE_NO_OP, TYPE_UNINSTALL and TYPE_INSTALL. 
/**
         * The {@code String} column of the {@link #CONTENT_URI} that provides an int specifying
         * the type of operation to perform. See {@link #TYPE_NO_OP},
         * {@link #TYPE_UNINSTALL} and {@link #TYPE_INSTALL}.
         */
        public static final String COLUMN_TYPE = "type";

        
An operation type used when the current time zone rules on device should be replaced by a new set obtained via the ContentProvider.openFile(Uri, String) method. 
/**
         * An operation type used when the current time zone rules on device should be replaced by
         * a new set obtained via the {@link android.content.ContentProvider#openFile(Uri, String)}
         * method.
         */
        public static final String TYPE_INSTALL = "INSTALL";

        
An operation type used when the current time zone rules on device should be uninstalled,
returning to the values held in the system partition.

/**
         * An operation type used when the current time zone rules on device should be uninstalled,
         * returning to the values held in the system partition.
         */
        public static final String TYPE_UNINSTALL = "UNINSTALL";

        
An operation type used when the time zone rules on device should be left as they are.
This is not expected to be used in normal operation but a safe result in the event of an
error that cannot be recovered from.

/**
         * An operation type used when the time zone rules on device should be left as they are.
         * This is not expected to be used in normal operation but a safe result in the event of an
         * error that cannot be recovered from.
         */
        public static final String TYPE_NO_OP = "NOOP";

        
The nullable int column of the CONTENT_URI that describes the major version of the distro to be installed. Only non-null if COLUMN_TYPE contains TYPE_INSTALL. 
/**
         * The {@code nullable int} column of the {@link #CONTENT_URI} that describes the major
         * version of the distro to be installed.
         * Only non-null if {@link #COLUMN_TYPE} contains {@link #TYPE_INSTALL}.
         */
        public static final String COLUMN_DISTRO_MAJOR_VERSION = "distro_major_version";

        
The nullable int column of the CONTENT_URI that describes the minor version of the distro to be installed. Only non-null if COLUMN_TYPE contains TYPE_INSTALL. 
/**
         * The {@code nullable int} column of the {@link #CONTENT_URI} that describes the minor
         * version of the distro to be installed.
         * Only non-null if {@link #COLUMN_TYPE} contains {@link #TYPE_INSTALL}.
         */
        public static final String COLUMN_DISTRO_MINOR_VERSION = "distro_minor_version";

        
The nullable String column of the CONTENT_URI that describes the IANA rules version of the distro to be installed. Only non-null if COLUMN_TYPE contains TYPE_INSTALL. 
/**
         * The {@code nullable String} column of the {@link #CONTENT_URI} that describes the IANA
         * rules version of the distro to be installed.
         * Only non-null if {@link #COLUMN_TYPE} contains {@link #TYPE_INSTALL}.
         */
        public static final String COLUMN_RULES_VERSION = "rules_version";

        
The nullable int column of the CONTENT_URI that describes the revision number of the distro to be installed. Only non-null if COLUMN_TYPE contains TYPE_INSTALL. 
/**
         * The {@code nullable int} column of the {@link #CONTENT_URI} that describes the revision
         * number of the distro to be installed.
         * Only non-null if {@link #COLUMN_TYPE} contains {@link #TYPE_INSTALL}.
         */
        public static final String COLUMN_REVISION = "revision";
    }
}