Module org.neo4j.cypherdsl.core

Package org.neo4j.cypherdsl.core

Class NullLiteral

java.lang.Object

org.neo4j.cypherdsl.core.NullLiteral

All Implemented Interfaces:

Visitable, Expression, Literal<Void>

@API(status=STABLE,
     since="1.0")
public final class NullLiteral
extends Object

Represents the literal value null.

Since:

1.0

Author:

Gerrit Meier, Michael J. Simons

Nested Class Summary

Nested classes/interfaces inherited from interface org.neo4j.cypherdsl.core.Literal

Literal.UnsupportedLiteralException

Method Summary

Modifier and Type	Method	Description
String	asString()	The string representation should be designed in such a way the a renderer can use it correctly in the given context of the literal, i.e.
final Void	getContent()
String	toString()	Most visitables will render themselves into a Cypher fragment preceded with the actual classname.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.neo4j.cypherdsl.core.Expression

add, as, as, ascending, asCondition, concat, contains, descending, divide, endsWith, eq, gt, gte, hasSize, in, includesAll, includesAny, isEmpty, isEqualTo, isFalse, isNotEqualTo, isNotNull, isNull, isTrue, lt, lte, matches, matches, multiply, ne, pow, property, remainder, size, sorted, startsWith, subtract

Methods inherited from interface org.neo4j.cypherdsl.core.ast.Visitable

accept

Method Details

asString

public String asString()

Description copied from interface: Literal

The string representation should be designed in such a way the a renderer can use it correctly in the given context of the literal, i.e. a literal containing a string should quote that string and escape all reserved characters.

Returns:

A string representation to be used literally in a cypher statement.

getContent

public final Void getContent()

Returns:

The content of this literal, may be null

toString

public String toString()

Description copied from interface: Visitable

Most visitables will render themselves into a Cypher fragment preceded with the actual classname. The representation however is not cached - in contrast to the ones for full statements. Using toString is recommended for debugging purposes mainly, and not for production use.

The concrete classname has been prepended to help debugging and actually to discourage using fragments to build queries without explicitly rendering them, either as statement or going through the renderer on purpose.

Specified by:

toString in interface Visitable

Overrides:

toString in class Object

Returns:

A string representation of this visitable formatted as Classname{cypher=value}