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/*
* Copyright (C) 2013 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 com.android.providers.contacts.database;
import static android.provider.ContactsContract.Contacts;
import static com.android.providers.contacts.ContactsDatabaseHelper.Tables;
import android.content.ContentValues;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.provider.ContactsContract;
import android.text.TextUtils;
import com.android.common.io.MoreCloseables;
import com.android.providers.contacts.util.Clock;
import java.util.Set;
/**
* Methods for operating on the contacts table.
*/
public class ContactsTableUtil {
/**
* Drop indexes if present. Create indexes.
*
* @param db The sqlite database instance.
*/
public static void createIndexes(SQLiteDatabase db) {
final String table = Tables.CONTACTS;
db.execSQL("CREATE INDEX contacts_has_phone_index ON " + table + " (" +
Contacts.HAS_PHONE_NUMBER +
");");
db.execSQL("CREATE INDEX contacts_name_raw_contact_id_index ON " + table + " (" +
Contacts.NAME_RAW_CONTACT_ID +
");");
db.execSQL(MoreDatabaseUtils.buildCreateIndexSql(table,
Contacts.CONTACT_LAST_UPDATED_TIMESTAMP));
}
public static void updateContactLastUpdateByContactId(SQLiteDatabase db, long contactId) {
final ContentValues values = new ContentValues();
values.put(Contacts.CONTACT_LAST_UPDATED_TIMESTAMP,
Clock.getInstance().currentTimeMillis());
db.update(Tables.CONTACTS, values, Contacts._ID + " = ?",
new String[] {String.valueOf(contactId)});
}
/**
* Refreshes the last updated timestamp of the contact with the current time.
*
* @param db The sqlite database instance.
* @param rawContactIds A set of raw contacts ids to refresh the contact for.
*/
public static void updateContactLastUpdateByRawContactId(SQLiteDatabase db,
Set<Long> rawContactIds) {
if (rawContactIds.isEmpty()) {
return;
}
db.execSQL(buildUpdateLastUpdateSql(rawContactIds));
}
/**
* Build a sql to update the last updated timestamp for contacts.
*
* @param rawContactIds The raw contact ids that contacts should be updated for.
* @return The update sql statement.
*/
private static String buildUpdateLastUpdateSql(Set<Long> rawContactIds) {
// Not using bind args here due to sqlite bind arg size limit. Large number of bind args
// will cause a sqlite error:
// android.database.sqlite.SQLiteException: too many SQL variables (code 1)
// Sql injection is not possible because input is a set of Long. If any part of the sql
// is built with user input strings, then this must be converted to using bind args.
final String sql = "UPDATE " + Tables.CONTACTS
+ " SET " + Contacts.CONTACT_LAST_UPDATED_TIMESTAMP + " = "
+ Clock.getInstance().currentTimeMillis()
+ " WHERE " + Contacts._ID + " IN ( "
+ " SELECT " + ContactsContract.RawContacts.CONTACT_ID
+ " FROM " + Tables.RAW_CONTACTS
+ " WHERE " + ContactsContract.RawContacts._ID
+ " IN (" + TextUtils.join(",", rawContactIds) + ") "
+ ")";
return sql;
}
/**
* Delete a contact identified by the contact id.
*
* @param db The sqlite database instance.
* @param contactId The contact id to delete.
* @return The number of records deleted.
*/
public static int deleteContact(SQLiteDatabase db, long contactId) {
DeletedContactsTableUtil.insertDeletedContact(db, contactId);
return db.delete(Tables.CONTACTS, Contacts._ID + " = ?", new String[]{contactId + ""});
}
/**
* Delete the aggregate contact if it has no constituent raw contacts other than the supplied
* one.
*/
public static int deleteContactIfSingleton(SQLiteDatabase db, long rawContactId) {
// This query will find a contact id if the contact has a raw contacts other than the one
// passed in.
final String sql = "select " + ContactsContract.RawContacts.CONTACT_ID + ", count(1)"
+ " from " + Tables.RAW_CONTACTS
+ " where " + ContactsContract.RawContacts.CONTACT_ID + " ="
+ " (select " + ContactsContract.RawContacts.CONTACT_ID
+ " from " + Tables.RAW_CONTACTS
+ " where " + ContactsContract.RawContacts._ID + " = ?)"
+ " group by " + ContactsContract.RawContacts.CONTACT_ID;
final Cursor cursor = db.rawQuery(sql, new String[]{rawContactId + ""});
try {
if (cursor.moveToNext()) {
long contactId = cursor.getLong(0);
long numRawContacts = cursor.getLong(1);
if (numRawContacts == 1) {
// Only one raw contact, we can delete the parent.
return deleteContact(db, contactId);
}
}
} finally {
MoreCloseables.closeQuietly(cursor);
}
return 0;
}
}
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