Examples of org.neo4j.graphdb.index.RelationshipIndex.query()

Class org.neo4j.graphdb.index.RelationshipIndex

Examples of org.neo4j.graphdb.index.RelationshipIndex.query()

org.neo4j.graphdb.index.RelationshipIndex.query()
Returns matches from this index based on the supplied {@code key} andquery object, which can be a query string or an implementation-specific query object. @param key the key in this query. @param queryOrQueryObjectOrNull the query for the {@code key} to match. @param startNodeOrNull filter so that only {@link Relationship}s with that given start node will be returned. @param endNodeOrNull filter so that only {@link Relationship}s with that given end node will be returned. @return the result wrapped in an {@link IndexHits} object. If the entireresult set isn't looped through, {@link IndexHits#close()} mustbe called before disposing of the result.


        // START SNIPPET: queryForRelationships
        // find relationships filtering on end node
        // using a query
        IndexHits<Relationship> matrixNeoHits;
        matrixNeoHits = roles.query( "name", "*eo", null, theMatrix );
        Relationship matrixNeo = matrixNeoHits.iterator().next();
        matrixNeoHits.close();
        // END SNIPPET: queryForRelationships
        assertEquals( "Neo", matrixNeo.getProperty( "name" ) );
        actor = matrixNeo.getStartNode();

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        // and uncommitted index entries, so we'll commit before querying:
        tx.success();
        tx.finish();
        // and now we can search for it:
        IndexHits<Relationship> typeHits;
        typeHits = roles.query( "type:ACTS_IN AND name:Neo", null, theMatrix );
        Relationship typeNeo = typeHits.iterator().next();
        typeHits.close();
        // END SNIPPET: queryForRelationshipType
        assertEquals( "Neo", typeNeo.getProperty( "name" ) );
        actor = matrixNeo.getStartNode();

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        index.add( rel1, "name", "something" );
        index.add( rel2, "name", "something" );
        
        for ( int i = 0; i < 2; i++ )
        {
            assertThat( index.query( "name:something" ), contains( rel1, rel2 ) );
            assertThat( index.query( "name:something", null, endNode1 ), contains( rel1 ) );
            assertThat( index.query( "name:something", startNode, endNode2 ), contains( rel2 ) );
            assertThat( index.query( null, startNode, endNode1 ), contains( rel1 ) );
            assertThat( index.get( "name", "something", null, endNode1 ), contains( rel1 ) );
            assertThat( index.get( "name", "something", startNode, endNode2 ), contains( rel2 ) );

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        index.add( rel2, "name", "something" );
        
        for ( int i = 0; i < 2; i++ )
        {
            assertThat( index.query( "name:something" ), contains( rel1, rel2 ) );
            assertThat( index.query( "name:something", null, endNode1 ), contains( rel1 ) );
            assertThat( index.query( "name:something", startNode, endNode2 ), contains( rel2 ) );
            assertThat( index.query( null, startNode, endNode1 ), contains( rel1 ) );
            assertThat( index.get( "name", "something", null, endNode1 ), contains( rel1 ) );
            assertThat( index.get( "name", "something", startNode, endNode2 ), contains( rel2 ) );
            assertThat( index.get( null, null, startNode, endNode1 ), contains( rel1 ) );

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        for ( int i = 0; i < 2; i++ )
        {
            assertThat( index.query( "name:something" ), contains( rel1, rel2 ) );
            assertThat( index.query( "name:something", null, endNode1 ), contains( rel1 ) );
            assertThat( index.query( "name:something", startNode, endNode2 ), contains( rel2 ) );
            assertThat( index.query( null, startNode, endNode1 ), contains( rel1 ) );
            assertThat( index.get( "name", "something", null, endNode1 ), contains( rel1 ) );
            assertThat( index.get( "name", "something", startNode, endNode2 ), contains( rel2 ) );
            assertThat( index.get( null, null, startNode, endNode1 ), contains( rel1 ) );

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        for ( int i = 0; i < 2; i++ )
        {
            assertThat( index.query( "name:something" ), contains( rel1, rel2 ) );
            assertThat( index.query( "name:something", null, endNode1 ), contains( rel1 ) );
            assertThat( index.query( "name:something", startNode, endNode2 ), contains( rel2 ) );
            assertThat( index.query( null, startNode, endNode1 ), contains( rel1 ) );
            assertThat( index.get( "name", "something", null, endNode1 ), contains( rel1 ) );
            assertThat( index.get( "name", "something", startNode, endNode2 ), contains( rel2 ) );
            assertThat( index.get( null, null, startNode, endNode1 ), contains( rel1 ) );
            
            restartTx();

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