org.janusgraph.graphdb.query.graph

Class GraphCentricQueryBuilder

java.lang.Object

org.janusgraph.graphdb.query.graph.GraphCentricQueryBuilder

All Implemented Interfaces:

JanusGraphQuery<GraphCentricQueryBuilder>

public class GraphCentricQueryBuilder
extends Object
implements JanusGraphQuery<GraphCentricQueryBuilder>

Builds a JanusGraphQuery, optimizes the query and compiles the result into a GraphCentricQuery which is then executed through a QueryProcessor.

Author:

Matthias Broecheler (me@matthiasb.com)

Constructor Summary

Constructors

Constructor and Description
GraphCentricQueryBuilder(StandardJanusGraphTx tx, IndexSerializer serializer, IndexSelectionStrategy indexSelector)

Method Summary

Modifier and Type	Method and Description
GraphCentricQuery	constructQuery(ElementCategory resultType)
GraphCentricQuery	constructQueryWithoutProfile(ElementCategory resultType)
void	disableSmartLimit()
Iterable<JanusGraphEdge>	edges() Returns all edges that match the conditions.
List<PredicateCondition<String,JanusGraphElement>>	getConstraints()
GraphCentricQueryBuilder	has(PropertyKey key, JanusGraphPredicate predicate, Object condition)
GraphCentricQueryBuilder	has(String key)
GraphCentricQueryBuilder	has(String key, JanusGraphPredicate predicate, Object condition) The returned element must have a property for the given key that matches the condition according to the specified relation
GraphCentricQueryBuilder	has(String key, Object value)
GraphCentricQueryBuilder	hasNot(String key)
GraphCentricQueryBuilder	hasNot(String key, Object value)
<T extends Comparable<?>> GraphCentricQueryBuilder	interval(String s, T t1, T t2)
<E extends JanusGraphElement> Iterable<E>	iterables(GraphCentricQuery query, Class<E> aClass)
GraphCentricQueryBuilder	limit(int limit) Limits the size of the returned result set
GraphCentricQueryBuilder	or(Collection<GraphCentricQueryBuilder> subQueries)
GraphCentricQueryBuilder	orderBy(String keyName, org.apache.tinkerpop.gremlin.process.traversal.Order order) Orders the element results of this query according to their property for the given key in the given order (increasing/decreasing).
GraphCentricQueryBuilder	profiler(QueryProfiler profiler)
Iterable<JanusGraphVertexProperty>	properties() Returns all properties that match the conditions
Iterable<JanusGraphVertex>	vertices() Returns all vertices that match the conditions.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

GraphCentricQueryBuilder

public GraphCentricQueryBuilder(StandardJanusGraphTx tx,
                                IndexSerializer serializer,
                                IndexSelectionStrategy indexSelector)

Method Detail

disableSmartLimit

public void disableSmartLimit()

getConstraints

public List<PredicateCondition<String,JanusGraphElement>> getConstraints()

profiler

public GraphCentricQueryBuilder profiler(QueryProfiler profiler)

has

public GraphCentricQueryBuilder has(String key,
                                    JanusGraphPredicate predicate,
                                    Object condition)

Description copied from interface: JanusGraphQuery

The returned element must have a property for the given key that matches the condition according to the specified relation

Specified by:

has in interface JanusGraphQuery<GraphCentricQueryBuilder>

Parameters:

key - Key that identifies the property

predicate - Relation between property and condition

Returns:

This query

has

public GraphCentricQueryBuilder has(PropertyKey key,
                                    JanusGraphPredicate predicate,
                                    Object condition)

has

public GraphCentricQueryBuilder has(String key)

Specified by:

has in interface JanusGraphQuery<GraphCentricQueryBuilder>

hasNot

public GraphCentricQueryBuilder hasNot(String key)

Specified by:

hasNot in interface JanusGraphQuery<GraphCentricQueryBuilder>

has

public GraphCentricQueryBuilder has(String key,
                                    Object value)

Specified by:

has in interface JanusGraphQuery<GraphCentricQueryBuilder>

hasNot

public GraphCentricQueryBuilder hasNot(String key,
                                       Object value)

Specified by:

hasNot in interface JanusGraphQuery<GraphCentricQueryBuilder>

interval

public <T extends Comparable<?>> GraphCentricQueryBuilder interval(String s,
                                                                   T t1,
                                                                   T t2)

Specified by:

interval in interface JanusGraphQuery<GraphCentricQueryBuilder>

limit

public GraphCentricQueryBuilder limit(int limit)

Description copied from interface: JanusGraphQuery

Limits the size of the returned result set

Specified by:

limit in interface JanusGraphQuery<GraphCentricQueryBuilder>

Parameters:

limit - The maximum number of results to return

Returns:

This query

orderBy

public GraphCentricQueryBuilder orderBy(String keyName,
                                        org.apache.tinkerpop.gremlin.process.traversal.Order order)

Description copied from interface: JanusGraphQuery

Orders the element results of this query according to their property for the given key in the given order (increasing/decreasing).

Specified by:

orderBy in interface JanusGraphQuery<GraphCentricQueryBuilder>

Parameters:

keyName - The key of the properties on which to order

order - the ordering direction

Returns:

or

public GraphCentricQueryBuilder or(Collection<GraphCentricQueryBuilder> subQueries)

Specified by:

or in interface JanusGraphQuery<GraphCentricQueryBuilder>

vertices

public Iterable<JanusGraphVertex> vertices()

Description copied from interface: JanusGraphQuery

Returns all vertices that match the conditions.

Specified by:

vertices in interface JanusGraphQuery<GraphCentricQueryBuilder>

Returns:

edges

public Iterable<JanusGraphEdge> edges()

Description copied from interface: JanusGraphQuery

Returns all edges that match the conditions.

Specified by:

edges in interface JanusGraphQuery<GraphCentricQueryBuilder>

Returns:

properties

public Iterable<JanusGraphVertexProperty> properties()

Description copied from interface: JanusGraphQuery

Returns all properties that match the conditions

Specified by:

properties in interface JanusGraphQuery<GraphCentricQueryBuilder>

Returns:

iterables

public <E extends JanusGraphElement> Iterable<E> iterables(GraphCentricQuery query,
                                                           Class<E> aClass)

constructQuery

public GraphCentricQuery constructQuery(ElementCategory resultType)

constructQueryWithoutProfile

public GraphCentricQuery constructQueryWithoutProfile(ElementCategory resultType)