Examples of com.hp.hpl.jena.tdb.StoreConnection.begin()

Class com.hp.hpl.jena.tdb.StoreConnection

Examples of com.hp.hpl.jena.tdb.StoreConnection.begin()

com.hp.hpl.jena.tdb.StoreConnection.begin()
Begin a transaction. Terminate a write transaction with {@link Transaction#commit()} or {@link Transaction#abort()}. Terminate a write transaction with {@link Transaction#close()}.


    @Test public void trans_readBlock_08()
    {
        // WRITE(start)-add-READ(start)-WRITE(commit)-READ sees old DSG.
        StoreConnection sConn = getStoreConnection() ;
        DatasetGraphTxn dsgW = sConn.begin(ReadWrite.WRITE) ;
        dsgW.add(q) ;
        
        DatasetGraphTxn dsgR1 = sConn.begin(ReadWrite.READ) ;
        assertFalse(dsgR1.contains(q)) ;

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        // WRITE(start)-add-READ(start)-WRITE(commit)-READ sees old DSG.
        StoreConnection sConn = getStoreConnection() ;
        DatasetGraphTxn dsgW = sConn.begin(ReadWrite.WRITE) ;
        dsgW.add(q) ;
        
        DatasetGraphTxn dsgR1 = sConn.begin(ReadWrite.READ) ;
        assertFalse(dsgR1.contains(q)) ;  
        
        dsgW.commit() ;
        dsgW.end() ;

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        assertFalse(dsgR1.contains(q)) ;  
        
        dsgW.commit() ;
        dsgW.end() ;
        
        DatasetGraphTxn dsgR2 = sConn.begin(ReadWrite.READ) ;
        
        assertFalse(dsgR1.contains(q)) ;    // Before view
        assertTrue(dsgR2.contains(q)) ;     // After view
        dsgR1.end() ;
        dsgR2.end() ;

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    @Test public void trans_readBlock_09()
    {
        // WRITE(commit)-READ(start)-WRITE(commit)-READ(finish)-check
        StoreConnection sConn = getStoreConnection() ;
        DatasetGraphTxn dsgW1 = sConn.begin(ReadWrite.WRITE) ;
        dsgW1.add(q1) ;
        dsgW1.commit() ;
        dsgW1.end() ;


        DatasetGraphTxn dsgR1 = sConn.begin(ReadWrite.READ) ;

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        DatasetGraphTxn dsgW1 = sConn.begin(ReadWrite.WRITE) ;
        dsgW1.add(q1) ;
        dsgW1.commit() ;
        dsgW1.end() ;


        DatasetGraphTxn dsgR1 = sConn.begin(ReadWrite.READ) ;
        DatasetGraphTxn dsgW2 = sConn.begin(ReadWrite.WRITE) ;
        dsgW2.add(q2) ;
        dsgW2.commit() ;
        dsgW2.end() ;

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        dsgW1.add(q1) ;
        dsgW1.commit() ;
        dsgW1.end() ;


        DatasetGraphTxn dsgR1 = sConn.begin(ReadWrite.READ) ;
        DatasetGraphTxn dsgW2 = sConn.begin(ReadWrite.WRITE) ;
        dsgW2.add(q2) ;
        dsgW2.commit() ;
        dsgW2.end() ;


        DatasetGraphTxn dsgR2 = sConn.begin(ReadWrite.READ) ;

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        DatasetGraphTxn dsgW2 = sConn.begin(ReadWrite.WRITE) ;
        dsgW2.add(q2) ;
        dsgW2.commit() ;
        dsgW2.end() ;


        DatasetGraphTxn dsgR2 = sConn.begin(ReadWrite.READ) ;
        assertTrue(dsgR1.contains(q1)) ;
        assertFalse(dsgR1.contains(q2)) ;
        
        assertTrue(dsgR2.contains(q1)) ;
        assertTrue(dsgR2.contains(q2)) ;

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    @Test public void trans_readBlock_10()
    {
        // READ(start)-WRITE(start)-WRITE(finish)-WRITE(start)-READ(finish)-WRITE(finish)-check
        StoreConnection sConn = getStoreConnection() ;


        DatasetGraphTxn dsgR1 = sConn.begin(ReadWrite.READ) ;
        DatasetGraphTxn dsgW1 = sConn.begin(ReadWrite.WRITE) ;
        dsgW1.add(q1) ;
        dsgW1.commit() ;
        dsgW1.end() ;

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    {
        // READ(start)-WRITE(start)-WRITE(finish)-WRITE(start)-READ(finish)-WRITE(finish)-check
        StoreConnection sConn = getStoreConnection() ;


        DatasetGraphTxn dsgR1 = sConn.begin(ReadWrite.READ) ;
        DatasetGraphTxn dsgW1 = sConn.begin(ReadWrite.WRITE) ;
        dsgW1.add(q1) ;
        dsgW1.commit() ;
        dsgW1.end() ;
        
        DatasetGraphTxn dsgW2 = sConn.begin(ReadWrite.WRITE) ;

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        DatasetGraphTxn dsgW1 = sConn.begin(ReadWrite.WRITE) ;
        dsgW1.add(q1) ;
        dsgW1.commit() ;
        dsgW1.end() ;
        
        DatasetGraphTxn dsgW2 = sConn.begin(ReadWrite.WRITE) ;
        dsgW2.add(q2) ;
        dsgR1.end() ;


        dsgW2.commit() ;
        dsgW2.end() ;

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