Package gudusoft.gsqlparser.nodes

Class TWhenClauseItem

Object

gudusoft.gsqlparser.nodes.TParseTreeNode

gudusoft.gsqlparser.nodes.TWhenClauseItem

All Implemented Interfaces:

Visitable, Iterator<TSourceToken>

public class TWhenClauseItem
extends TParseTreeNode

WhenClause item used in case expr of TCaseExpression.

• WHEN comparison_expr THEN return_expr
• comparison_expr: getComparison_expr()
• return_expr: getReturn_expr()

in db2/plsql case statement

• WHEN comparison_expr THEN statement_list
• comparison_expr: getComparison_expr()
• statement_list: getStatement_list()

See Also:

• TCaseExpression

Field Summary

Fields inherited from class gudusoft.gsqlparser.nodes.TParseTreeNode

dbvendor, doubleLinkedTokenListToString, nodeActionAppend, nodeActionInsert, nodeActionRemove, nodeActionUnknown, nodeActionUpdate, nodeActionUpdateText, nodeChangeEndToken, nodeChangeStartToken

Constructor Summary

Constructors

Constructor	Description
TWhenClauseItem()

Method Summary

Modifier and Type	Method	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	getComparison_expr()
TExpressionList	getConditionList()
TConstantList	getCount_fraction_description_list()	teradata: count,fraction description list of sample clause
TExpression	getReturn_expr()
TStatementList	getStatement_list()
void	init(Object arg1, Object arg2)
void	setComparison_expr(TExpression comparison_expr)
void	setConditionList(TExpressionList conditionList)
void	setCount_fraction_description_list(TConstantList count_fraction_description_list)
void	setReturn_expr(TExpression return_expr)
void	setStatement_list(TStatementList statement_list)

Methods inherited from class gudusoft.gsqlparser.nodes.TParseTreeNode

addAllMyTokensToTokenList, addToTokenChain, appendNewNode, calculateTokenCount, doAppendNewNode, fastSetString, getAnchorNode, getColumnNo, getCommentAfterNode, getCommentBeforeNode, getCompactString, getDummyTag, getEndToken, getEvaluateDatatype, getEvalValue, getGsqlparser, getLineNo, getLocation, getMd5, getNodeStatus, getNodeType, getParentObjectName, getPlainText, getStartToken, getTokenCount, hasNext, init, init, init, init, init, insertAfterAToken, insertNewNodeBeforeMe, isChanged, isTokensInChain, next, refreshAllNodesTokenCount, remove, removeAllMyTokensFromTokenList, removeTokens, removeTokensBetweenNodes, removeTokensBetweenToken, replaceWithNewNode, resetIterator, setAnchorNode, setChanged, setDummyTag, setEndToken, setEndToken, setEndToken, setEndToken, setEndToken, setEndTokenDirectly, setEvaluateDatatype, setEvalValue, setGsqlparser, setIncludingComment, setLocation, setNewSubNode, setNodeStatus, setNodeType, setParent, setPlainText, setStartToken, setStartToken, setStartToken, setStartToken, setStartTokenDirectly, setString, setString2, subNodeInNode, toScript, toString, toString2

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

Constructor Details

TWhenClauseItem

public TWhenClauseItem()

Method Details

getConditionList

public TExpressionList getConditionList()

getCount_fraction_description_list

public TConstantList getCount_fraction_description_list()

teradata: count,fraction description list of sample clause

Returns:

getComparison_expr

public TExpression getComparison_expr()

getReturn_expr

public TExpression getReturn_expr()

getStatement_list

public TStatementList getStatement_list()

Returns:

statement list if it's in a plsql/db2 case statement.

init

public void init(Object arg1,
 Object arg2)

Overrides:

init in class TParseTreeNode

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

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

setComparison_expr

public void setComparison_expr(TExpression comparison_expr)

setReturn_expr

public void setReturn_expr(TExpression return_expr)

setConditionList

public void setConditionList(TExpressionList conditionList)

setCount_fraction_description_list

public void setCount_fraction_description_list(TConstantList count_fraction_description_list)

setStatement_list

public void setStatement_list(TStatementList statement_list)