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diff --git a/doc/src/declarative/globalobject.qdoc b/doc/src/declarative/globalobject.qdoc index 0911784e56..6d501802a8 100644 --- a/doc/src/declarative/globalobject.qdoc +++ b/doc/src/declarative/globalobject.qdoc @@ -118,90 +118,6 @@ browser. The following objects and properties are supported by the QML implemen The \l{declarative/xml/xmlhttprequest}{XMLHttpRequest example} demonstrates how to use the XMLHttpRequest object to make a request and read the response headers. -\section1 Offline Storage API - -\section2 Database API - -The \c openDatabaseSync() and related functions -provide the ability to access local offline storage in an SQL database. - -These databases are user-specific and QML-specific, but accessible to all QML applications. -They are stored in the \c Databases subdirectory -of QDeclarativeEngine::offlineStoragePath(), currently as SQLite databases. - -Database connections are automatically closed during Javascript garbage collection. - -The API can be used from JavaScript functions in your QML: - -\snippet declarative/sqllocalstorage/hello.qml 0 - -The API conforms to the Synchronous API of the HTML5 Web Database API, -\link http://www.w3.org/TR/2009/WD-webdatabase-20091029/ W3C Working Draft 29 October 2009\endlink. - -The \l{declarative/sqllocalstorage}{SQL Local Storage example} demonstrates the basics of -using the Offline Storage API. - -\section3 db = openDatabaseSync(identifier, version, description, estimated_size, callback(db)) - -Returns the database identified by \i identifier. If the database does not already exist, it -is created, and the function \i callback is called with the database as a parameter. \i description -and \i estimated_size are written to the INI file (described below), but are otherwise currently -unused. - -May throw exception with code property SQLException.DATABASE_ERR, or SQLException.VERSION_ERR. - -When a database is first created, an INI file is also created specifying its characteristics: - -\table -\header \o \bold {Key} \o \bold {Value} -\row \o Name \o The name of the database passed to \c openDatabase() -\row \o Version \o The version of the database passed to \c openDatabase() -\row \o Description \o The description of the database passed to \c openDatabase() -\row \o EstimatedSize \o The estimated size (in bytes) of the database passed to \c openDatabase() -\row \o Driver \o Currently "QSQLITE" -\endtable - -This data can be used by application tools. - -\section3 db.changeVersion(from, to, callback(tx)) - -This method allows you to perform a \i{Scheme Upgrade}. - -If the current version of \i db is not \i from, then an exception is thrown. - -Otherwise, a database transaction is created and passed to \i callback. In this function, -you can call \i executeSql on \i tx to upgrade the database. - -May throw exception with code property SQLException.DATABASE_ERR or SQLException.UNKNOWN_ERR. - -\section3 db.transaction(callback(tx)) - -This method creates a read/write transaction and passed to \i callback. In this function, -you can call \i executeSql on \i tx to read and modify the database. - -If the callback throws exceptions, the transaction is rolled back. - -\section3 db.readTransaction(callback(tx)) - -This method creates a read-only transaction and passed to \i callback. In this function, -you can call \i executeSql on \i tx to read the database (with SELECT statements). - -\section3 results = tx.executeSql(statement, values) - -This method executes a SQL \i statement, binding the list of \i values to SQL positional parameters ("?"). - -It returns a results object, with the following properties: - -\table -\header \o \bold {Type} \o \bold {Property} \o \bold {Value} \o \bold {Applicability} -\row \o int \o rows.length \o The number of rows in the result \o SELECT -\row \o var \o rows.item(i) \o Function that returns row \i i of the result \o SELECT -\row \o int \o rowsAffected \o The number of rows affected by a modification \o UPDATE, DELETE -\row \o string \o insertId \o The id of the row inserted \o INSERT -\endtable - -May throw exception with code property SQLException.DATABASE_ERR, SQLException.SYNTAX_ERR, or SQLException.UNKNOWN_ERR. - \section1 Logging \c console.log(), \c console.debug(), \c console.time(), and \c console.timeEnd() can be used to print information |