Package ortus.boxlang.compiler.ast.sql.select.expression.literal

Class SQLNullLiteral

java.lang.Object

ortus.boxlang.compiler.ast.BoxNode

ortus.boxlang.compiler.ast.sql.SQLNode

ortus.boxlang.compiler.ast.sql.select.expression.SQLExpression

ortus.boxlang.compiler.ast.sql.select.expression.literal.SQLNullLiteral

All Implemented Interfaces:

BoxVisitable

public class SQLNullLiteral
extends SQLExpression

Abstract Node class representing SQL null

Field Summary

Fields inherited from class ortus.boxlang.compiler.ast.BoxNode

parent, position

Constructor Summary

Constructors

Constructor	Description
SQLNullLiteral(Position position, String sourceText)	Constructor

Method Summary

Modifier and Type	Method	Description
BoxNode	accept(ReplacingBoxVisitor v)	Accept method for replacing visitor support.
void	accept(VoidBoxVisitor v)	Accept method for visitor support.
Object	evaluate(QoQSelectExecution QoQExec, int[] intersection)	Evaluate the expression
Object	evaluateAggregate(QoQSelectExecution QoQExec, List<int[]> intersections)	Evaluate the expression aginst a partition of data
boolean	isLiteral()	Check if the expression is a literal
Map<String,Object>	toMap()

Methods inherited from class ortus.boxlang.compiler.ast.sql.select.expression.SQLExpression

getType, isBoolean, isNumeric

Methods inherited from class ortus.boxlang.compiler.ast.BoxNode

addComment, associateComments, endsOnSameLineAs, enumToMap, getAncestors, getChildren, getComments, getDescendants, getDescendantsOfType, getDescendantsOfType, getDescription, getDocComment, getFirstAncestorOfType, getFirstAncestorOfType, getFirstNodeOfType, getFirstNodeOfType, getFirstNodeOfTypes, getParent, getPosition, getSourceText, isAfter, isBefore, isInside, replaceChildren, replaceChildren, setComments, setParent, setPosition, setSourceText, startsOnEndLineOf, toJSON, toString

Methods inherited from class java.lang.Object

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

Constructor Details

SQLNullLiteral

public SQLNullLiteral(Position position,
 String sourceText)

Constructor

Parameters:

position - position of the statement in the source code

sourceText - source code of the statement

Method Details

isLiteral

public boolean isLiteral()

Check if the expression is a literal

Overrides:

isLiteral in class SQLExpression

evaluate

public Object evaluate(QoQSelectExecution QoQExec,
 int[] intersection)

Evaluate the expression

Specified by:

evaluate in class SQLExpression

evaluateAggregate

public Object evaluateAggregate(QoQSelectExecution QoQExec,
 List<int[]> intersections)

Evaluate the expression aginst a partition of data

Specified by:

evaluateAggregate in class SQLExpression

accept

public void accept(VoidBoxVisitor v)

Description copied from interface: BoxVisitable

Accept method for visitor support.

Parameters:

v - the visitor implementation

accept

public BoxNode accept(ReplacingBoxVisitor v)

Description copied from interface: BoxVisitable

Accept method for replacing visitor support. Each accept returns the node, or a replacement node.

Parameters:

v - the visitor implementation

toMap

public Map<String,Object> toMap()

Overrides:

toMap in class BoxNode