Package org.apache.tinkerpop.gremlin.gql

Class QueryVertex

java.lang.Object

org.apache.tinkerpop.gremlin.gql.QueryVertex

public final class QueryVertex
extends Object

Represents a vertex pattern element in a GQL MATCH clause. A vertex may have an optional variable name for result binding, an optional label constraint for filtering, and an optional list of property predicates from an inline filter map. All fields are nullable/empty: an anonymous vertex () has neither variable nor label.

Constructor Summary

Constructors

Constructor	Description
QueryVertex(String variable, String label)
QueryVertex(String variable, String label, List<PropertyPredicate> predicates)

Method Summary

Modifier and Type	Method	Description
String	getLabel()	Returns the label constraint for this vertex, or null if unconstrained.
List<PropertyPredicate>	getPredicates()	Returns the property predicates parsed from the inline filter map, or an empty list if no property filter was specified.
String	getVariable()	Returns the variable name bound to this vertex, or null if anonymous.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

QueryVertex

public QueryVertex(String variable,
 String label,
 List<PropertyPredicate> predicates)

QueryVertex

public QueryVertex(String variable,
 String label)

Method Details

getVariable

public String getVariable()

Returns the variable name bound to this vertex, or null if anonymous.

getLabel

public String getLabel()

Returns the label constraint for this vertex, or null if unconstrained.

getPredicates

public List<PropertyPredicate> getPredicates()

Returns the property predicates parsed from the inline filter map, or an empty list if no property filter was specified.

toString

public String toString()

Overrides:

toString in class Object