Package org.apache.tinkerpop.gremlin.language.grammar

Class VariableResolver.NullVariableResolver

java.lang.Object

org.apache.tinkerpop.gremlin.language.grammar.VariableResolver.NullVariableResolver

All Implemented Interfaces:

BiFunction<String,GremlinParser.VariableContext,Object>, VariableResolver<Object>

Enclosing interface:

VariableResolver<T>

public static class VariableResolver.NullVariableResolver
extends Object
implements VariableResolver<Object>

This VariableResolver simply provides a null value for all variable names. It's typical use is for when you really don't intend to execute the traversal and just want to get an instance of one when bindings are being used as with NoOpTerminalVisitor.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.tinkerpop.gremlin.language.grammar.VariableResolver

VariableResolver.DefaultVariableResolver, VariableResolver.DirectVariableResolver, VariableResolver.NoVariableResolver, VariableResolver.NullVariableResolver

Constructor Summary

Constructors

Constructor	Description
NullVariableResolver()

Method Summary

Modifier and Type	Method	Description
Object	apply(String s, GremlinParser.VariableContext variableContext)	This function resolves a variable name and the given parsers context to an object.
static VariableResolver	instance()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.function.BiFunction

andThen

Constructor Details

NullVariableResolver

public NullVariableResolver()

Method Details

instance

public static VariableResolver instance()

apply

public Object apply(String s,
 GremlinParser.VariableContext variableContext)

Description copied from interface: VariableResolver

This function resolves a variable name and the given parsers context to an object.

Specified by:

apply in interface BiFunction<String,GremlinParser.VariableContext,Object>

Specified by:

apply in interface VariableResolver<Object>