org.janusgraph.core.schema

Class JanusGraphDefaultSchemaMaker

java.lang.Object

org.janusgraph.core.schema.JanusGraphDefaultSchemaMaker

All Implemented Interfaces:

DefaultSchemaMaker

public class JanusGraphDefaultSchemaMaker
extends Object
implements DefaultSchemaMaker

DefaultSchemaMaker implementation for Blueprints graphs

Author:

Matthias Broecheler ([email protected])

Field Summary

Fields

Modifier and Type	Field and Description
static DefaultSchemaMaker	INSTANCE

Method Summary

Modifier and Type	Method and Description
Cardinality	defaultPropertyCardinality(String key)
protected Class	determineClass(Object value)
void	enableLogging(Boolean enabled) Enable/Disable logging in schema maker
boolean	ignoreUndefinedQueryTypes() Whether to ignore undefined types occurring in a query.
void	makeConnectionConstraint(EdgeLabel edgeLabel, VertexLabel outVLabel, VertexLabel inVLabel, SchemaManager manager) Add a constraint on which vertices the given edge label can connect using the schema manager.
EdgeLabel	makeEdgeLabel(EdgeLabelMaker factory) Creates a new edge label with default settings against the provided EdgeLabelMaker.
void	makePropertyConstraintForEdge(EdgeLabel edgeLabel, PropertyKey key, SchemaManager manager) Add property constraints for a given edge label using the schema manager.
void	makePropertyConstraintForVertex(VertexLabel vertexLabel, PropertyKey key, SchemaManager manager) Add property constraints for a given vertex label using the schema manager.
PropertyKey	makePropertyKey(PropertyKeyMaker factory) Creates a new property key with default settings against the provided PropertyKeyMaker.
PropertyKey	makePropertyKey(PropertyKeyMaker factory, Object value) Creates a new property key with default settings against the provided PropertyKeyMaker and value.
VertexLabel	makeVertexLabel(VertexLabelMaker factory) Creates a new vertex label with the default settings against the provided VertexLabelMaker.

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final DefaultSchemaMaker INSTANCE

Method Detail

enableLogging

public void enableLogging(Boolean enabled)

Description copied from interface: DefaultSchemaMaker

Enable/Disable logging in schema maker

Specified by:

enableLogging in interface DefaultSchemaMaker

defaultPropertyCardinality

public Cardinality defaultPropertyCardinality(String key)

Specified by:

defaultPropertyCardinality in interface DefaultSchemaMaker

Returns:

the default cardinality of a property if created for the given key

makeEdgeLabel

public EdgeLabel makeEdgeLabel(EdgeLabelMaker factory)

Description copied from interface: DefaultSchemaMaker

Creates a new edge label with default settings against the provided EdgeLabelMaker.

Specified by:

makeEdgeLabel in interface DefaultSchemaMaker

Parameters:

factory - EdgeLabelMaker through which the edge label is created

Returns:

A new edge label

makePropertyKey

public PropertyKey makePropertyKey(PropertyKeyMaker factory)

Description copied from interface: DefaultSchemaMaker

Creates a new property key with default settings against the provided PropertyKeyMaker.

Specified by:

makePropertyKey in interface DefaultSchemaMaker

Parameters:

factory - PropertyKeyMaker through which the property key is created

Returns:

A new property key

makePropertyKey

public PropertyKey makePropertyKey(PropertyKeyMaker factory,
                                   Object value)

Description copied from interface: DefaultSchemaMaker

Creates a new property key with default settings against the provided PropertyKeyMaker and value.

Specified by:

makePropertyKey in interface DefaultSchemaMaker

Parameters:

factory - PropertyKeyMaker through which the property key is created

value - the value of the property. The default implementation does not use this parameter.

Returns:

A new property key

makeVertexLabel

public VertexLabel makeVertexLabel(VertexLabelMaker factory)

Description copied from interface: DefaultSchemaMaker

Creates a new vertex label with the default settings against the provided VertexLabelMaker.

Specified by:

makeVertexLabel in interface DefaultSchemaMaker

Parameters:

factory - VertexLabelMaker through which the vertex label is created

Returns:

A new vertex label

makePropertyConstraintForVertex

public void makePropertyConstraintForVertex(VertexLabel vertexLabel,
                                            PropertyKey key,
                                            SchemaManager manager)

Description copied from interface: DefaultSchemaMaker

Add property constraints for a given vertex label using the schema manager.

Specified by:

makePropertyConstraintForVertex in interface DefaultSchemaMaker

Parameters:

vertexLabel - to which the constraint applies.

key - defines the property which should be added to the vertex label as a constraint.

manager - is used to update the schema.

See Also:

SchemaManager

makePropertyConstraintForEdge

public void makePropertyConstraintForEdge(EdgeLabel edgeLabel,
                                          PropertyKey key,
                                          SchemaManager manager)

Description copied from interface: DefaultSchemaMaker

Add property constraints for a given edge label using the schema manager.

Specified by:

makePropertyConstraintForEdge in interface DefaultSchemaMaker

Parameters:

edgeLabel - to which the constraint applies.

key - defines the property which should be added to the edge label as a constraint.

manager - is used to update the schema.

See Also:

SchemaManager

makeConnectionConstraint

public void makeConnectionConstraint(EdgeLabel edgeLabel,
                                     VertexLabel outVLabel,
                                     VertexLabel inVLabel,
                                     SchemaManager manager)

Description copied from interface: DefaultSchemaMaker

Add a constraint on which vertices the given edge label can connect using the schema manager.

Specified by:

makeConnectionConstraint in interface DefaultSchemaMaker

Parameters:

edgeLabel - to which the constraint applies.

outVLabel - specifies the outgoing vertex for this connection.

inVLabel - specifies the incoming vertex for this connection.

manager - is used to update the schema.

See Also:

SchemaManager

ignoreUndefinedQueryTypes

public boolean ignoreUndefinedQueryTypes()

Description copied from interface: DefaultSchemaMaker

Whether to ignore undefined types occurring in a query.

If this method returns true, then undefined types referred to in a JanusGraphVertexQuery will be silently ignored and an empty result set will be returned. If this method returns false, then usage of undefined types in queries results in an IllegalArgumentException.

Specified by:

ignoreUndefinedQueryTypes in interface DefaultSchemaMaker

determineClass

protected Class determineClass(Object value)