gudusoft.gsqlparser.nodes

Class TTopClause

java.lang.Object

gudusoft.gsqlparser.nodes.TParseTreeNode

gudusoft.gsqlparser.nodes.TTopClause

All Implemented Interfaces:

Visitable

public class TTopClause
extends TParseTreeNode

Indicates that only a specified first set or percent of rows will be returned from the query result set. expression can be either a number or a percent of the rows.

Syntax:

 TOP ( expression ) [ PERCENT ] [ WITH TIES ]
 

Constructor Summary

Constructors

Constructor and Description
TTopClause()

Method Summary

Modifier and Type	Method and Description
void	accept(TParseTreeVisitor v) Accept a visitor
void	acceptChildren(TParseTreeVisitor v) Accept a visitor to iterate this class and sub-nodes of this class
void	doParse(TCustomSqlStatement psql, ESqlClause plocation) Analyze the sub-nodes inside this node.
TExpression	getExpr()
TSelectSqlStatement	getSubquery()
void	init(Object arg1) Initialize a query tree node.
boolean	isPercent()
boolean	isWithties()
void	setExpr(TExpression expr)
void	setPercent(boolean percent)
void	setSubquery(TSelectSqlStatement subquery)
void	setWithties(boolean withties)

Methods inherited from class gudusoft.gsqlparser.nodes.TParseTreeNode

addAllMyTokensToTokenList, appendString, fastSetString, getColumnNo, getDummyTag, getEndToken, getGsqlparser, getLineNo, getNodeType, getStartToken, init, init, init, init, init, removeAllMyTokensFromTokenList, setDummyTag, setEndToken, setEndToken, setEndToken, setEndToken, setGsqlparser, setIncludingComment, setNodeType, setStartToken, setStartToken, setStartToken, setStartToken, setString, toScript, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

TTopClause

public TTopClause()

Method Detail

init

public void init(Object arg1)

Description copied from class: TParseTreeNode

Initialize a query tree node. Used internally

Overrides:

init in class TParseTreeNode

Parameters:

arg1 - first argument

doParse

public void doParse(TCustomSqlStatement psql,
                    ESqlClause plocation)

Description copied from class: TParseTreeNode

Analyze the sub-nodes inside this node. Such as build the relationship between table and column.

Overrides:

doParse in class TParseTreeNode

Parameters:

psql - SQL statement this node belongs to

plocation - SQL clause this node belongs to

getSubquery

public TSelectSqlStatement getSubquery()

getExpr

public TExpression getExpr()

setPercent

public void setPercent(boolean percent)

setWithties

public void setWithties(boolean withties)

setExpr

public void setExpr(TExpression expr)

setSubquery

public void setSubquery(TSelectSqlStatement subquery)

isPercent

public boolean isPercent()

isWithties

public boolean isWithties()

accept

public void accept(TParseTreeVisitor v)

Description copied from class: TParseTreeNode

Accept a visitor

Specified by:

accept in interface Visitable

Overrides:

accept in class TParseTreeNode

Parameters:

v - visitor is a descendant class of TParseTreeVisitor

acceptChildren

public void acceptChildren(TParseTreeVisitor v)

Description copied from class: TParseTreeNode

Accept a visitor to iterate this class and sub-nodes of this class

Specified by:

acceptChildren in interface Visitable

Overrides:

acceptChildren in class TParseTreeNode

Parameters:

v - visitor is a descendant class of TParseTreeVisitor