Package com.blazebit.persistence.parser.expression

Class NullExpression

java.lang.Object

com.blazebit.persistence.parser.expression.AbstractExpression

com.blazebit.persistence.parser.expression.NullExpression

All Implemented Interfaces:

Expression, LiteralExpression<Object>

public class NullExpression
extends AbstractExpression
implements LiteralExpression<Object>

Since:

1.0.1

Author:

Christian Beikov

Nested Class Summary

Nested classes/interfaces inherited from interface com.blazebit.persistence.parser.expression.Expression

Expression.ResultVisitor<T>, Expression.Visitor

Field Summary

Fields

Modifier and Type	Field	Description
static NullExpression	INSTANCE

Constructor Summary

Constructors

Constructor	Description
NullExpression()

Method Summary

Modifier and Type	Method	Description
<T> T	accept(Expression.ResultVisitor<T> visitor)
void	accept(Expression.Visitor visitor)	The expression tree is traversed in pre-order.
NullExpression	copy(ExpressionCopyContext copyContext)
boolean	equals(Object obj)
Object	getValue()
int	hashCode()
String	toString()	Returns the trimmed original string representation of the expression.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

INSTANCE

public static final NullExpression INSTANCE

Constructor Details

NullExpression

public NullExpression()

Method Details

copy

public NullExpression copy(ExpressionCopyContext copyContext)

Specified by:

copy in interface Expression

Specified by:

copy in class AbstractExpression

Returns:

accept

public void accept(Expression.Visitor visitor)

Description copied from interface: Expression

The expression tree is traversed in pre-order.

Specified by:

accept in interface Expression

accept

public <T> T accept(Expression.ResultVisitor<T> visitor)

Specified by:

accept in interface Expression

toString

public String toString()

Description copied from interface: Expression

Returns the trimmed original string representation of the expression.

Specified by:

toString in interface Expression

Overrides:

toString in class AbstractExpression

Returns:

The string representation of the expression

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

getValue

public Object getValue()

Specified by:

getValue in interface LiteralExpression<Object>