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Enqueue dequeue java card game drivers#
Enqueue dequeue java card game driver#

Oracle server implementation of AQRawPayload Oracle server implementation of AQQueueTable Oracle Server implementation of AQMessage Oracle server implementation of AQSession Table 7-4 Oracle8i AQ Classes Class Summary Table 7-3 AQ Common Classes Class Summary * JDBC setup and connection creation: */Ĭlass.forName("") ĭb_conn = DriverManager.getConnection "aquser", "aquser") Ĭlass.forName("oracle.AQ.AQOracleDriver") Īq_sess = AQDriverManager.createAQSession(db_conn) ĪPIs/Classes Table 7-2 AQ Interfaces Interface Summary Įxample Connection db_conn /* JDBC connection */ For more information, see "Setup for AQ Examples".

Enqueue dequeue java card game driver#

Loading the driver multiple times will have no effect. Note that the driver needs to be loaded only once (before the first createAQSession call). Then you must load the AQDriver that you need to use in the application. To create an AQSession, you must first open a JDBC connection. Syntax: public static void registerDriver(AQDriver aq_driver) This method is used by various implementations of the AQ driver to register themselves with the driver manager (this method is not directly called by client programs) We recommend that multithreaded programs create a different AQSession in each thread (using the same or a different JDBC connection) and get new queue table and queue handles using the getQueueTable and getQueue methods in AQSession.

You can pass these objects between threads, but the program must ensure that the methods on these AQ objects are not invoked concurrently. Therefore, methods on AQSession, AQQueueTable, AQQueue and other AQ objects should not be called concurrently from different threads. If the user is using the AQOracleDriver, then the object passed in must be a valid JDBC connectionĬurrently Java AQ objects are not thread safe. Table 7-1 getAQSession Parameters Parameter Syntax: public static AQSession getAQSession ( conn) throws AQException It returns a Vector of strings containing the names of the registered drivers.

Enqueue dequeue java card game drivers#

This method returns the list of drivers registered with the driver manager. Users can also acquire these rights through the AQ_USER_ROLE or the AQ_ADMINSTRATOR_ROLE.Users will also need the appropriate system and queue privileges for 8.1 style queue tables.Ĭurrently the Oracle8i AQDriver supports only RAW type payloads. Users must have the execute privilege on the DBMS_AQIN package in order to use the AQ Java interfaces. The Oracle8 i AQDriver expects a valid JDBC connection to be passed in as a parameter to create an AQSession. createAQSession() method is invoked, it calls the appropriate AQDriver (amongst the registered drivers) depending on the parameter passed to the createAQSession() call. The driver manager is used to create an AQSession which can be used to perform messaging tasks. Both OLite and Oracle8i will have an AQDriver which is registered with the AQDriverManager. The various implementations of the Java AQ API are managed via an AQDriverManager. The way to create a multi-consumer queue is described in the "AQSession". Set up for the test_aqjava class is described in "Setup for AQ Examples".

Enqueue of Messages with Priority Using Java.

Enqueue and Dequeue of RAW Type Messages Using Java.

jar file into the database using the "loadjava" utility.Ĭhapter 8, "Oracle Advanced Queuing by Example" contains the following examples: If the application is using the KPRB driver and accessing the java AQ API from java stored procedures, you must first load the aqapi. If your application uses the OCI8 or thin JDBC driver, you must include $ ORACLE_HOME/ rdbms/ jlib/ aqapi. These classes can be used with any Oracle8 i JDBC driver. The java AQ classes are located in $ORACLE_HOME/ rdbms/ jlib/ aqapi. In this document we describe the common interfaces and their corresponding Oracle8i implementations, which are in turn prefixed with "AQOracle". These interfaces will have different implementations in Oracle8i and Oracle Lite. The common interfaces are prefixed with "AQ". The following sections describe the common interfaces and classes based on the current PL/SQL interfaces. This means that you will no longer be required to use the PL/SQL interfaces. In developing Java programs for messaging applications, you will use JDBC to open a connection to the database and then the Java AQ API for message queuing. The Java AQ API supports both the administrative and operational features of Oracle AQ. This chapter introduces and details the Java Application Programmer's Interface for Advanced Queuing under the following headings: