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_02()
    {
        // READ(start)-WRITE(abort)-READ(finish)-check
        StoreConnection sConn = getStoreConnection() ;
        DatasetGraphTxn dsgR1 = sConn.begin(ReadWrite.READ) ;
        
        DatasetGraphTxn dsgW = sConn.begin(ReadWrite.WRITE) ;
        
        dsgW.add(q) ;
        dsgW.abort() ;

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    {
        // READ(start)-WRITE(abort)-READ(finish)-check
        StoreConnection sConn = getStoreConnection() ;
        DatasetGraphTxn dsgR1 = sConn.begin(ReadWrite.READ) ;
        
        DatasetGraphTxn dsgW = sConn.begin(ReadWrite.WRITE) ;
        
        dsgW.add(q) ;
        dsgW.abort() ;
        dsgW.end() ;

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        dsgW.end() ;
        
        assertFalse(dsgR1.contains(q)) ;
        dsgR1.end() ;


        DatasetGraphTxn dsgR2 = sConn.begin(ReadWrite.READ) ;
        assertFalse(dsgR2.contains(q)) ;
        dsgR2.end() ;
        
        DatasetGraph dsg = sConn.getBaseDataset() ;
        assertFalse(dsg.contains(q)) ;

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    @Test public void trans_readBlock_03()
    {
        // READ(start)-WRITE(commit)-WRITE(commit)-READ(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(commit)-WRITE(commit)-READ(finish)-check
        StoreConnection sConn = getStoreConnection() ;
        DatasetGraphTxn dsgR1 = sConn.begin(ReadWrite.READ) ;
        
        DatasetGraphTxn dsgW1 = sConn.begin(ReadWrite.WRITE) ;
        dsgW1.add(q1) ;
        dsgW1.commit() ;
        dsgW1.end() ;


        assertFalse(dsgR1.contains(q1)) ;

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        dsgW1.commit() ;
        dsgW1.end() ;


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


        assertFalse(dsgR1.contains(q1)) ;

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        assertFalse(dsgR1.contains(q1)) ;
        assertFalse(dsgR1.contains(q2)) ;


        dsgR1.end() ;


        DatasetGraphTxn dsgR2 = sConn.begin(ReadWrite.READ) ;
        assertTrue(dsgR2.contains(q1)) ;
        assertTrue(dsgR2.contains(q2)) ;
        dsgR2.end() ;
        
        DatasetGraph dsg = sConn.getBaseDataset() ;

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    @Test
    public void trans_readBlock_04()
    {
        // READ(block)-WRITE(abort)-WRITE(commit)-READ(close)-check
        StoreConnection sConn = getStoreConnection() ;
        DatasetGraphTxn dsgR1 = sConn.begin(ReadWrite.READ) ;
        
        DatasetGraphTxn dsgW2 = sConn.begin(ReadWrite.WRITE) ;
        dsgW2.add(q2) ;
        dsgW2.abort() ; // ABORT
        dsgW2.end() ;

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    {
        // READ(block)-WRITE(abort)-WRITE(commit)-READ(close)-check
        StoreConnection sConn = getStoreConnection() ;
        DatasetGraphTxn dsgR1 = sConn.begin(ReadWrite.READ) ;
        
        DatasetGraphTxn dsgW2 = sConn.begin(ReadWrite.WRITE) ;
        dsgW2.add(q2) ;
        dsgW2.abort() ; // ABORT
        dsgW2.end() ;
        assertFalse(dsgR1.contains(q2)) ;

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        dsgW2.add(q2) ;
        dsgW2.abort() ; // ABORT
        dsgW2.end() ;
        assertFalse(dsgR1.contains(q2)) ;


        DatasetGraphTxn dsgW3 = sConn.begin(ReadWrite.WRITE) ;
        dsgW3.add(q3) ;
        // Can see W1
        assertFalse(dsgW3.contains(q2)) ;
        dsgW3.commit() ;
        dsgW3.end() ;

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