org.datanucleus.query.expression

Class CaseExpression

java.lang.Object

org.datanucleus.query.expression.Expression

org.datanucleus.query.expression.CaseExpression

All Implemented Interfaces:

Serializable

public class CaseExpression
extends Expression

Expression representing a case series of when expressions and their action expressions.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.datanucleus.query.expression.Expression

Expression.DyadicOperator, Expression.MonadicOperator, Expression.Operator

Field Summary

Fields inherited from class org.datanucleus.query.expression.Expression

alias, left, LOCALISER, op, OP_ADD, OP_AND, OP_CAST, OP_COM, OP_CONCAT, OP_DISTINCT, OP_DIV, OP_EQ, OP_GT, OP_GTEQ, OP_IN, OP_IS, OP_ISNOT, OP_LIKE, OP_LT, OP_LTEQ, OP_MOD, OP_MUL, OP_NEG, OP_NOT, OP_NOTEQ, OP_NOTIN, OP_OR, OP_SUB, parent, right, symbol

Constructor Summary

Constructors

Constructor and Description
CaseExpression(Expression elseExpr)

Method Summary

Methods

Modifier and Type	Method and Description
void	addCondition(Expression whenExpr, Expression actionExpr)
Symbol	bind(SymbolTable symtbl) Method to bind the expression to the symbol table as appropriate.
Map<Expression,Expression>	getConditions()
Expression	getElseExpression()
String	toString()

Methods inherited from class org.datanucleus.query.expression.Expression

evaluate, getAlias, getLeft, getOperator, getParent, getRight, getSymbol, setAlias, setLeft, setRight

Methods inherited from class java.lang.Object

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

Constructor Detail

CaseExpression

public CaseExpression(Expression elseExpr)

Method Detail

addCondition

public void addCondition(Expression whenExpr,
                Expression actionExpr)

getConditions

public Map<Expression,Expression> getConditions()

getElseExpression

public Expression getElseExpression()

bind

public Symbol bind(SymbolTable symtbl)

Description copied from class: Expression

Method to bind the expression to the symbol table as appropriate.

Specified by:

bind in class Expression

Parameters:

symtbl - Symbol table

Returns:

The symbol for this expression

toString

public String toString()

Overrides:

toString in class Object