/* * (c) Copyright 2008, 2009 Hewlett-Packard Development Company, LP * All rights reserved. * [See end of file] */ package dev; import java.sql.SQLException; import com.hp.hpl.jena.graph.Graph; import com.hp.hpl.jena.graph.Triple; import com.hp.hpl.jena.sdb.SDBFactory; import com.hp.hpl.jena.sdb.Store; import com.hp.hpl.jena.sdb.StoreDesc; import com.hp.hpl.jena.sdb.sql.SDBConnection; import com.hp.hpl.jena.sdb.sql.SDBConnectionFactory; import com.hp.hpl.jena.sdb.sql.TableUtils; import com.hp.hpl.jena.sdb.store.StoreFactory; import com.hp.hpl.jena.sparql.sse.SSE; /** * Imitate connection pooling. * Create an SQL/JDBC connection, create a store around it, do something * then remove the store (forget it, close it). * Create another store on the JDBC conenction. */ public class TestStores2Connections1 { public static void main(String ... argv) throws SQLException { Triple t1 = SSE.parseTriple("(:x1 :p :z)") ; Triple t2 = SSE.parseTriple("(:x2 :p :z)") ; StoreDesc desc = StoreDesc.read("sdb.ttl") ; java.sql.Connection conn = SDBFactory.createSqlConnection("sdb.ttl") ; boolean explicitTransactions = false ; { SDBConnection sConn1 = SDBConnectionFactory.create(conn) ; Store store1 = StoreFactory.create(desc, sConn1) ; if ( explicitTransactions ) store1.getConnection().getTransactionHandler().begin() ; Graph graph1 = SDBFactory.connectDefaultGraph(store1) ; graph1.getBulkUpdateHandler().removeAll() ; SSE.write(graph1) ; System.out.println(); graph1.add(t1) ; SSE.write(graph1) ; System.out.println(); // Look for temporary tables. TableUtils.hasTable(sConn1.getSqlConnection(), "#NNodeTriples", new String[0]) ; if ( explicitTransactions ) store1.getConnection().getTransactionHandler().commit() ; //store1.close() ; } // Mythically return conn to the pool. // Get from pool // i.e. same connection. Make a store around it { SDBConnection sConn2 = SDBConnectionFactory.create(conn) ; Store store2 = StoreFactory.create(desc, sConn2) ; if ( explicitTransactions ) store2.getConnection().getTransactionHandler().begin() ; Graph graph2 = SDBFactory.connectDefaultGraph(store2) ; graph2.add(t2) ; SSE.write(graph2) ; System.out.println(); if ( explicitTransactions ) store2.getConnection().getTransactionHandler().commit() ; store2.close() ; } System.exit(0) ; } } /* * (c) Copyright 2008, 2009 Hewlett-Packard Development Company, LP * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */