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

Class SQLColumn

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.SQLColumn

All Implemented Interfaces:

BoxVisitable

public class SQLColumn
extends SQLExpression

Abstract Node class representing SQL column reference

Field Summary

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

parent, position

Constructor Summary

Constructors

Constructor	Description
SQLColumn(SQLTable table, String name, 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.
void	ensureData(QoQSelectExecution QoQExec)	Get the table, performing runtime lookup if necessary
Object	evaluate(QoQSelectExecution QoQExec, int[] intersection)	Evaluate the expression
Object	evaluateAggregate(QoQSelectExecution QoQExec, List<int[]> intersections)	Evaluate the expression aginst a partition of data
Key	getName()	Get the name of the function
SQLTable	getTable()	Get the table (may be null if there is no alias)
SQLTable	getTableFinal(QoQSelectExecution QoQExec)	Get the table, performing runtime lookup if necessary
QueryColumnType	getType(QoQSelectExecution QoQExec)	What type does this expression evaluate to
boolean	isBoolean(QoQSelectExecution QoQExec)	Runtime check if the expression evaluates to a boolean value and works for columns as well
boolean	isNumeric(QoQSelectExecution QoQExec)	Runtime check if the expression evaluates to a numeric value and works for columns as well
void	setName(String name)	Set the name of the function
void	setTable(SQLTable table)	Set the table
Map<String,Object>	toMap()

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

isLiteral

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

SQLColumn

public SQLColumn(SQLTable table,
 String name,
 Position position,
 String sourceText)

Constructor

Parameters:

position - position of the statement in the source code

sourceText - source code of the statement

Method Details

getName

public Key getName()

Get the name of the function

Returns:

the name of the function

setName

public void setName(String name)

Set the name of the function

Parameters:

name - the name of the function

getTable

public SQLTable getTable()

Get the table (may be null if there is no alias)

getTableFinal

public SQLTable getTableFinal(QoQSelectExecution QoQExec)

Get the table, performing runtime lookup if necessary

ensureData

public void ensureData(QoQSelectExecution QoQExec)

Get the table, performing runtime lookup if necessary

setTable

public void setTable(SQLTable table)

Set the table

getType

public QueryColumnType getType(QoQSelectExecution QoQExec)

What type does this expression evaluate to

Overrides:

getType 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

isBoolean

public boolean isBoolean(QoQSelectExecution QoQExec)

Runtime check if the expression evaluates to a boolean value and works for columns as well

Overrides:

isBoolean in class SQLExpression

Parameters:

QoQExec - Query execution state

Returns:

true if the expression evaluates to a boolean value

isNumeric

public boolean isNumeric(QoQSelectExecution QoQExec)

Runtime check if the expression evaluates to a numeric value and works for columns as well

Overrides:

isNumeric in class SQLExpression

Parameters:

QoQExec - Query execution state

Returns:

true if the expression evaluates to a numeric value

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