Catalog Service

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The Catalog object is the highest-level container in the SDBCX layer. It contains structural features of databases, like the schema and security model for the database. The connection, for instance, represents the database, and the Catalog is the database container for the tables, views, groups, and users within a connection or database. To create a catalog object, the database driver must support the interface and an existing connection object. The following code fragment lists tables in a database.

 // create the Driver with the implementation name
 Object aDriver = xORB.createInstance("");
 // query for the interface xDriver;
 xDriver = (XDriver)UnoRuntime.queryInterface(XDriver.class, aDriver);
 if (xDriver != null) {
     // first create the needed url
     String adabasURL = "sdbc:adabas::MYDB0";
     // second create the necessary properties [] adabasProps = new[] {
         new"user", 0, "test1",
         new"password", 0, "test1",
     // now create a connection to adabas
     XConnection adabasConnection = xDriver.connect(adabasURL, a dabasProps);
     if(adabasConnection != null) {
         System.out.println("Connection could be created!");
         // we need the XDatabaseDefinitionSupplier interface 
         // from the driver to get the XTablesSupplier
         XDataDefinitionSupplier xDDSup = (XDataDefinitionSupplier)UnoRuntime.queryInterface(
             XDataDefinitionSupplier.class, xDriver);
         if (xDDSup != null) {
             XTablesSupplier xTabSup = xDDSup.getDataDefinitionByConnection(adabasConnection);
         if (xTabSup != null) {
             XNameAccess xTables = xTabSup.getTables();
             // now print all table names
             System.out.println("Tables available:");
             String [] aTableNames = xTables.getElementNames();
             for ( int i =0; i<= aTableNames.length-1; i++)
         else {
             System.out.println("The driver is not SDBCX capable!");
         // now we dispose the connection to close it
         XComponent xComponent = (XComponent)UnoRuntime.queryInterface(
             XComponent.class, adabasConnection);
         if (xComponent != null) {
             System.out.println("Connection disposed!");
     else {
         System.out.println("Connection could not be created!");

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