Examples of org.lilyproject.hbaseindex.Query

org.lilyproject.hbaseindex.Query
Description of query.
A query is performed by instantiating this object, adding conditions to it, and then passing it to {@link Index#performQuery}.
A query can contain equals conditions on zero or more fields, and at most one range condition. The range condition should always be on the last used field. A query does not need to use all fields defined in the index, but you have to use them 'left to right'.
A query can also have an optional {@link IndexFilter}to do some additional filtering on the results, based on the fields and data stored in the index.
The structural validity of the query will be checked once the query is supplied to {@link Index#performQuery}, not while adding the individual conditions.

     * @param parentRecordId record id of the record to find dependencies for
     * @param vtag     vtag of the record to find dependencies for
     * @return the record ids and vtags on which the given record depends
     */
    Set<DependencyEntry> findDependencies(AbsoluteRecordId parentRecordId, SchemaId vtag) throws IOException {
        final Query query = new Query();
        query.addEqualsCondition("dependant_recordid", parentRecordId.toBytes());
        query.addEqualsCondition("dependant_vtag", vtag.getBytes());


        final Set<DependencyEntry> result;


        final QueryResult queryResult = forwardDerefIndex.performQuery(query);
        if (queryResult.next() != null) {

View Full Code Here

    public DependantRecordIdsIterator findDependantsOf(AbsoluteRecordId parentRecordId, Set<SchemaId> fields,
                                                       SchemaId vtag) throws IOException {


        final RecordId master = parentRecordId.getRecordId().getMaster();


        final Query query = new Query();
        query.addEqualsCondition("dependency_masterrecordid", master.toBytes());
        if (vtag != null) {
            query.addEqualsCondition("dependant_vtag", vtag.getBytes());
        }


        query.setIndexFilter(new DerefMapIndexFilter(parentRecordId.getRecordId().getVariantProperties(), fields));


        return new DependantRecordIdsIteratorImpl(backwardDerefIndex.performQuery(query), this.serializationUtil);
    }

View Full Code Here


    private class SingleFieldEqualsQuery implements Runnable {
        @Override
        public void run() {
            try {
                Query query = new Query();
                query.addEqualsCondition("word", Words.get());


                int resultCount = 0;


                long before = System.nanoTime();
                QueryResult result = index.performQuery(query);

View Full Code Here

                    word = Words.get();
                }


                String prefix = word.substring(0, 3);


                Query query = new Query();
                query.setRangeCondition("word", prefix, prefix, true, true);


                int resultCount = 0;


                long before = System.nanoTime();
                QueryResult result = index.performQuery(query);

View Full Code Here


    public Set<AbsoluteRecordId> getAbsoluteReferrers(AbsoluteRecordId record, SchemaId vtag, SchemaId sourceField)
            throws LinkIndexException, InterruptedException {
        long before = System.currentTimeMillis();
        try {
            Query query = new Query();
            query.addEqualsCondition("target", record.toBytes());
            if (vtag != null) {
                query.addEqualsCondition("vtag", vtag.getBytes());
            }
            if (sourceField != null) {
                query.addEqualsCondition("sourcefield", sourceField.getBytes());
            }


            Set<AbsoluteRecordId> result = Sets.newHashSet();


            QueryResult qr = backwardIndex.performQuery(query);

View Full Code Here


    public Set<FieldedLink> getFieldedReferrers(RecordId record, SchemaId vtag)
            throws LinkIndexException, InterruptedException {
        long before = System.currentTimeMillis();
        try {
            Query query = new Query();
            query.addEqualsCondition("target", record.toBytes());
            if (vtag != null) {
                query.addEqualsCondition("vtag", vtag.getBytes());
            }


            Set<FieldedLink> result = new HashSet<FieldedLink>();


            QueryResult qr = backwardIndex.performQuery(query);

View Full Code Here


    public Set<Pair<FieldedLink, SchemaId>> getAllForwardLinks(AbsoluteRecordId record)
            throws LinkIndexException, InterruptedException {
        long before = System.currentTimeMillis();
        try {
            Query query = new Query();
            query.addEqualsCondition("source", record.toBytes());


            Set<Pair<FieldedLink, SchemaId>> result = new HashSet<Pair<FieldedLink, SchemaId>>();


            QueryResult qr = forwardIndex.performQuery(query);
            byte[] id;

View Full Code Here


    public Set<AbsoluteRecordId> getForwardLinks(AbsoluteRecordId record, SchemaId vtag, SchemaId sourceField)
            throws LinkIndexException, InterruptedException {
        long before = System.currentTimeMillis();
        try {
            Query query = new Query();
            query.addEqualsCondition("source", record.toBytes());
            if (vtag != null) {
                query.addEqualsCondition("vtag", vtag.getBytes());
            }
            if (sourceField != null) {
                query.addEqualsCondition("sourcefield", sourceField.getBytes());
            }


            Set<AbsoluteRecordId> result = new HashSet<AbsoluteRecordId>();


            QueryResult qr = forwardIndex.performQuery(query);

View Full Code Here


    public Set<FieldedLink> getFieldedForwardLinks(AbsoluteRecordId record, SchemaId vtag)
            throws LinkIndexException, InterruptedException {
        long before = System.currentTimeMillis();
        try {
            Query query = new Query();
            query.addEqualsCondition("source", record.toBytes());
            if (vtag != null) {
                query.addEqualsCondition("vtag", vtag.getBytes());
            }


            Set<FieldedLink> result = new HashSet<FieldedLink>();


            QueryResult qr = forwardIndex.performQuery(query);

View Full Code Here

TOP

Related Classes of org.lilyproject.hbaseindex.Query

org.lilyproject.hbaseindex.perftest.HbaseIndexPerfTest$SingleFieldEqualsQuery

org.lilyproject.hbaseindex.perftest.HbaseIndexPerfTest$StringRangeQuery

org.lilyproject.indexer.derefmap.DerefMapHbaseImpl

org.lilyproject.linkindex.LinkIndex

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.