![]() * and must be called right after the database has been created. * method does not work if any data has been written to the database file, * Returns the current database page size, in bytes. */ long setMaximumSize ( long numBytes ) /** * numBytes the maximum database size, in bytes * Sets the maximum size the database will grow to. * Returns the maximum size the database may grow to. */ ( "unused" ) public interface SupportSQLiteDatabase extends Closeable /** * A database abstraction which removes the framework dependency and allows swapping underlying ![]() */ package import import import import import import import android.os.Build import android.os.CancellationSignal import android.os.OperationCanceledException import import import import import java.io.Closeable import import /** * See the License for the specific language governing permissions and * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * distributed under the License is distributed on an "AS IS" BASIS, * Unless required by applicable law or agreed to in writing, software * You may obtain a copy of the License at * you may not use this file except in compliance with the License. * Licensed under the Apache License, Version 2.0 (the "License") The following method inserts a document and assigns it to a task within a single transaction.* Copyright (C) 2016 The Android Open Source Project */ public function insertDoc ($mimeType, $pathToFile) Code language: SQL (Structured Query Language) ( sql ) * Insert blob data into the documents table The following method inserts a new document into the documents table and returns the document id. ![]() We create a new class name SQLiteTransaction for the demonstration. In case something wrong happened, you can roll back all the operations using the rollback() method as follows: $pdo->rollback() Code language: PHP ( php ) SQLite PHP transaction example To commit the transaction, you call the commit() method: $pdo->commit() Code language: PHP ( php ) To wrap multiple operations inside a transaction, we call the beginTransaction() method of the PDO object as follows: $pdo->beginTransaction() Code language: PHP ( php ) Whenever we execute a statement in PDO, the database commits the operation by default. xml layout file and replace the TextView with a ListView. ![]() ) Code language: SQL (Structured Query Language) ( sql )Ä«asically, a task has multiple documents and a document may belong to many tasks. ![]() REFERENCES documents (document_id) ON UPDATE CASCADE ON DELETE CASCADE REFERENCES tasks (task_id) ON UPDATE CASCADE ON DELETE CASCADE, CREATE TABLE IF NOT EXISTS task_documents ( Letâs create a new table named task_documents that stores the relationships between a task and a document. Summary: in this tutorial, we will show you how to use the transaction features of PHP PDO to ensure the data integrity in the SQLite database. ![]()
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