Examples with Transaction org.apache.fluo.api.client.Transaction used on opensource projects

Example 1 with Transaction

use of org.apache.fluo.api.client.Transaction in project incubator-rya by apache.

the class FluoBinPruner method pruneBindingSetBin.

/**
 * This method deletes BindingSets in the specified bin from the BindingSet
 * Column of the indicated Fluo nodeId
 *
 * @param id
 *            - Fluo nodeId
 * @param bin
 *            - bin id
 */
@Override
public void pruneBindingSetBin(final NodeBin nodeBin) {
    final String id = nodeBin.getNodeId();
    final long bin = nodeBin.getBin();
    try (Transaction tx = client.newTransaction()) {
        final Optional<NodeType> type = NodeType.fromNodeId(id);
        if (!type.isPresent()) {
            log.trace("Unable to determine NodeType from id: " + id);
            throw new RuntimeException();
        }
        final Column batchInfoColumn = type.get().getResultColumn();
        final Bytes batchInfoSpanPrefix = BindingHashShardingFunction.getShardedScanPrefix(id, vf.createLiteral(bin));
        final SpanBatchDeleteInformation batchInfo = SpanBatchDeleteInformation.builder().setColumn(batchInfoColumn).setSpan(Span.prefix(batchInfoSpanPrefix)).build();
        BatchInformationDAO.addBatch(tx, id, batchInfo);
        tx.commit();
    }
}

Example 2 with Transaction

use of org.apache.fluo.api.client.Transaction in project incubator-rya by apache.

the class FluoQueryMetadataDAOIT method joinMetadataTest.

@Test
public void joinMetadataTest() {
    final FluoQueryMetadataDAO dao = new FluoQueryMetadataDAO();
    // Create the object that will be serialized.
    final JoinMetadata.Builder builder = JoinMetadata.builder("nodeId");
    builder.setVarOrder(new VariableOrder("g;y;s"));
    builder.setJoinType(JoinType.NATURAL_JOIN);
    builder.setParentNodeId("parentNodeId");
    builder.setLeftChildNodeId("leftChildNodeId");
    builder.setRightChildNodeId("rightChildNodeId");
    final JoinMetadata originalMetadata = builder.build();
    try (FluoClient fluoClient = FluoFactory.newClient(super.getFluoConfiguration())) {
        // Write it to the Fluo table.
        try (Transaction tx = fluoClient.newTransaction()) {
            dao.write(tx, originalMetadata);
            tx.commit();
        }
        // Read it from the Fluo table.
        JoinMetadata storedMetadata = null;
        try (Snapshot sx = fluoClient.newSnapshot()) {
            storedMetadata = dao.readJoinMetadata(sx, "nodeId");
        }
        // Ensure the deserialized object is the same as the serialized one.
        assertEquals(originalMetadata, storedMetadata);
    }
}

Example 3 with Transaction

use of org.apache.fluo.api.client.Transaction in project incubator-rya by apache.

the class FluoQueryMetadataDAOIT method constructQueryMetadataTest.

@Test
public void constructQueryMetadataTest() throws MalformedQueryException {
    final String query = "select ?x ?y where {?x <uri:p1> ?y. ?y <uri:p2> <uri:o1> }";
    final SPARQLParser parser = new SPARQLParser();
    final ParsedQuery pq = parser.parseQuery(query, null);
    final List<StatementPattern> patterns = StatementPatternCollector.process(pq.getTupleExpr());
    final FluoQueryMetadataDAO dao = new FluoQueryMetadataDAO();
    // Create the object that will be serialized.
    final ConstructQueryMetadata.Builder builder = ConstructQueryMetadata.builder();
    builder.setNodeId("nodeId");
    builder.setChildNodeId("childNodeId");
    builder.setParentNodeId("parentNodeId");
    builder.setVarOrder(new VariableOrder("a;b;c"));
    builder.setConstructGraph(new ConstructGraph(patterns));
    final ConstructQueryMetadata originalMetadata = builder.build();
    try (FluoClient fluoClient = FluoFactory.newClient(super.getFluoConfiguration())) {
        // Write it to the Fluo table.
        try (Transaction tx = fluoClient.newTransaction()) {
            dao.write(tx, originalMetadata);
            tx.commit();
        }
        // Read it from the Fluo table.
        ConstructQueryMetadata storedMetdata = null;
        try (Snapshot sx = fluoClient.newSnapshot()) {
            storedMetdata = dao.readConstructQueryMetadata(sx, "nodeId");
        }
        // Ensure the deserialized object is the same as the serialized one.
        assertEquals(originalMetadata, storedMetdata);
    }
}

Example 4 with Transaction

use of org.apache.fluo.api.client.Transaction in project incubator-rya by apache.

the class FluoQueryMetadataDAOIT method fluoQueryTest.

@Test
public void fluoQueryTest() throws MalformedQueryException, UnsupportedQueryException {
    final FluoQueryMetadataDAO dao = new FluoQueryMetadataDAO();
    // Create the object that will be serialized.
    final String sparql = "SELECT ?customer ?worker ?city " + "{ " + "FILTER(?customer = <http://Alice>) " + "FILTER(?city = <http://London>) " + "?customer <http://talksTo> ?worker. " + "?worker <http://livesIn> ?city. " + "?worker <http://worksAt> <http://Chipotle>. " + "}";
    final SparqlFluoQueryBuilder builder = new SparqlFluoQueryBuilder();
    builder.setSparql(sparql);
    builder.setFluoQueryId(NodeType.generateNewFluoIdForType(NodeType.QUERY));
    final FluoQuery originalQuery = builder.build();
    assertEquals(QueryType.PROJECTION, originalQuery.getQueryType());
    assertEquals(false, originalQuery.getConstructQueryMetadata().isPresent());
    try (FluoClient fluoClient = FluoFactory.newClient(super.getFluoConfiguration())) {
        // Write it to the Fluo table.
        try (Transaction tx = fluoClient.newTransaction()) {
            dao.write(tx, originalQuery);
            tx.commit();
        }
        // Read it from the Fluo table.
        FluoQuery storedQuery = null;
        try (Snapshot sx = fluoClient.newSnapshot()) {
            storedQuery = dao.readFluoQuery(sx, originalQuery.getQueryMetadata().getNodeId());
        }
        // Ensure the deserialized object is the same as the serialized one.
        assertEquals(originalQuery, storedQuery);
    }
}

Example 5 with Transaction

use of org.apache.fluo.api.client.Transaction in project incubator-rya by apache.

the class FluoQueryMetadataDAOIT method fluoNestedConstructQueryTest.

@Test
public void fluoNestedConstructQueryTest() throws MalformedQueryException, UnsupportedQueryException {
    final FluoQueryMetadataDAO dao = new FluoQueryMetadataDAO();
    // Create the object that will be serialized.
    final String sparql = "CONSTRUCT { " + "_:b a <urn:highSpeedTrafficArea> . " + "_:b <urn:hasCount> ?obsCount . " + "_:b <urn:hasLocation> ?location ." + "_:b <urn:hasAverageVelocity> ?avgVelocity ." + "} WHERE { " + "FILTER(?obsCount > 1) " + "{ " + "SELECT ?location (count(?obs) AS ?obsCount) (avg(?velocity) AS ?avgVelocity) " + "WHERE { " + "FILTER(?velocity > 75) " + "?obs <urn:hasVelocity> ?velocity. " + "?obs <urn:hasLocation> ?location. " + "}GROUP BY ?location }}";
    final SparqlFluoQueryBuilder builder = new SparqlFluoQueryBuilder();
    builder.setSparql(sparql);
    builder.setFluoQueryId(NodeType.generateNewFluoIdForType(NodeType.QUERY));
    final FluoQuery originalQuery = builder.build();
    assertEquals(QueryType.CONSTRUCT, originalQuery.getQueryType());
    try (FluoClient fluoClient = FluoFactory.newClient(super.getFluoConfiguration())) {
        // Write it to the Fluo table.
        try (Transaction tx = fluoClient.newTransaction()) {
            dao.write(tx, originalQuery);
            tx.commit();
        }
        // Read it from the Fluo table.
        FluoQuery storedQuery = null;
        try (Snapshot sx = fluoClient.newSnapshot()) {
            storedQuery = dao.readFluoQuery(sx, originalQuery.getQueryMetadata().getNodeId());
        }
        // Ensure the deserialized object is the same as the serialized one.
        assertEquals(originalQuery, storedQuery);
    }
}