Examples with DatasetGraphTDB org.apache.jena.tdb.store.DatasetGraphTDB used on opensource projects

Example 11 with DatasetGraphTDB

use of org.apache.jena.tdb.store.DatasetGraphTDB in project jena by apache.

the class TestQuadFilter method setup.

/** Example setup - in-memory dataset with two graphs, one triple in each */
private static Dataset setup() {
    Dataset ds = TDBFactory.createDataset();
    DatasetGraphTDB dsg = (DatasetGraphTDB) (ds.asDatasetGraph());
    Quad q1 = SSE.parseQuad("(<http://example/g1> <http://example/s> <http://example/p> <http://example/o1>)");
    Quad q2 = SSE.parseQuad("(<http://example/g2> <http://example/s> <http://example/p> <http://example/o2>)");
    dsg.add(q1);
    dsg.add(q2);
    return ds;
}

Example 12 with DatasetGraphTDB

use of org.apache.jena.tdb.store.DatasetGraphTDB in project jena by apache.

the class TestQuadFilter method createFilter.

/** Create a filter to exclude the graph http://example/g2 */
private static Predicate<Tuple<NodeId>> createFilter(Dataset ds) {
    DatasetGraphTDB dsg = (DatasetGraphTDB) (ds.asDatasetGraph());
    final NodeTable nodeTable = dsg.getQuadTable().getNodeTupleTable().getNodeTable();
    final NodeId target = nodeTable.getNodeIdForNode(NodeFactory.createURI(graphToHide));
    return item -> !(item.len() == 4 && item.get(0).equals(target));
}

Example 13 with DatasetGraphTDB

use of org.apache.jena.tdb.store.DatasetGraphTDB in project jena by apache.

the class StoreConnection method make.

/**
     * Return a StoreConnection for a particular connection. This is used to
     * create transactions for the database at the location.
     */
public static synchronized StoreConnection make(Location location, StoreParams params) {
    StoreConnection sConn = cache.get(location);
    if (sConn != null)
        return sConn;
    DatasetGraphTDB dsg = DatasetBuilderStd.create(location, params);
    sConn = _makeAndCache(dsg);
    return sConn;
}

Example 14 with DatasetGraphTDB

use of org.apache.jena.tdb.store.DatasetGraphTDB in project jena by apache.

the class TDB method sync.

/** Sync a TDB-backed DatasetGraph. Do nothing if not TDB-backed. */
public static void sync(DatasetGraph dataset) {
    if (dataset == null)
        return;
    // Should be: SystemARQ.sync(dataset) ;
    if (dataset instanceof DatasetGraphTDB) {
        syncObject(dataset);
        return;
    }
    if (dataset instanceof DatasetGraphTransaction) {
        DatasetGraphTransaction dsgt = (DatasetGraphTransaction) dataset;
        // This only sync if the dataset has not been used transactionally.
        // Can't sync transactional datasets (it's meaningless)
        dsgt.syncIfNotTransactional();
        return;
    }
    // May be a general purpose dataset with TDB objects in it.
    sync(dataset.getDefaultGraph());
    Iterator<Node> iter = dataset.listGraphNodes();
    // Avoid iterator concurrency.
    iter = Iter.toList(iter).iterator();
    for (; iter.hasNext(); ) {
        Node n = iter.next();
        Graph g = dataset.getGraph(n);
        sync(g);
    }
}

Example 15 with DatasetGraphTDB

use of org.apache.jena.tdb.store.DatasetGraphTDB in project jena by apache.

the class TestTransRestart method setupPlain.

private void setupPlain() {
    // Make without transactions.
    DatasetGraphTDB dsg = createPlain(location);
    dsg.add(quad1);
    dsg.close();
    StoreConnection.release(location);
    return;
}