- VISUAL STUDIO MARKETPLACE LISTING CONNECTALL FULL
- VISUAL STUDIO MARKETPLACE LISTING CONNECTALL SOFTWARE
In normal operations, where TTClasses and applications are compiled with the TTEXCEPT flag, a TTStatus object is thrown as an exception if an error or warning occurs during the operation. When an application establishes a connection to TimesTen, using TTConnection::Connect(), the application should prepare all TTCmd objects associated with the connection. Note that preparing is a relatively expensive operation. TTCmd automatically defines and binds all necessary columns at prepare time. There is no need to explicitly bind columns or parameters to a SQL statement, as is necessary when you use ODBC directly. The value for " ?" is specified at runtime by using the TTCmd::setParam() method.
It is more efficient to prepare a single parameterized statement and execute it multiple times: With TimesTen, statements are typically parameterized for better performance. Note that the Prepare() method only prepares and does not execute the statement.
The association is accomplished by using the Prepare() method, which also compiles and optimizes the SQL statement to ensure it will be executed in an efficient manner. The XYZConnection class contains private TTCmd members representing the prepared SQL statements that can be used in the application, and provides new public methods to implement the application-specific database functionality through these private TTCmd members.īefore a TTCmd object can be used, a SQL statement (such as SELECT, INSERT, UPDATE, or DELETE) must be associated with it. For an application named XYZ, you can create a class XYZConnection, for example.
VISUAL STUDIO MARKETPLACE LISTING CONNECTALL FULL
In ODBC, and thus in TTClasses, statements are bound to a particular connection, so a full set of the statements used by the application will often be associated with every connection to the database.Ī convenient way to accomplish this is to develop an application-specific class that is derived from TTConnection. Ideally, all SQL statements that will be used by an application are prepared when the application begins, using a separate TTCmd object for each statement. To achieve optimal performance, real-time applications should use prepared SQL statements. While TTClasses can be used in several ways, the following general approach has been used successfully and can easily be adapted to a variety of applications. Us ing TTCmd, TTConnection, and TTConnectionPool Parameterized SQL is strongly encouraged and its use is greatly simplified in TTClasses compared to hand-coded ODBC. For example, autocommit is disabled by default. The library uses TimesTen in an optimal manner.
VISUAL STUDIO MARKETPLACE LISTING CONNECTALL SOFTWARE
TTClasses is also intended to promote best practices when writing application software that uses the TimesTen Data Manager. For general information about XLA, see "XLA and TimesTen Event Management" in Oracle TimesTen In-Memory Database C Developer's Guide. TTClasses provides a convenient interface to the most commonly used aspects of XLA functionality. When other applications change that table, the changes are reported through XLA to the monitoring application. XLA allows an application to monitor one or more tables in a database. In addition to providing a C++ interface to the TimesTen ODBC interface, TTClasses supplies an interface to the TimesTen Transaction Log API (XLA). Refer to ODBC API reference documentation for detailed information about ODBC. It was developed to meet the demand for an API that is easier to use than ODBC but does not sacrifice performance. The TimesTen C++ Interface Classes library (TTClasses) provides wrappers around the most common ODBC functionality to allow database access.
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