org.datanucleus.query.expression
Class CastExpression

java.lang.Object
  org.datanucleus.query.expression.Expression
      org.datanucleus.query.expression.CastExpression

public class CastExpression
extends Expression

Expression representing a cast to a different type.

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_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_OR, OP_SUB, right, symbol

Constructor Summary

CastExpression(Expression left, java.lang.String className)
Constructor for an expression representing the cast of the left expression.

Method Summary

Symbol	bind(SymbolTable symtbl) Method to bind the expression to the symbol table as appropriate.
java.lang.String	getClassName() The name of the class to cast to.
java.lang.String	toString()

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

evaluate, getAlias, getLeft, getOperator, getRight, getSymbol, setAlias

Methods inherited from class java.lang.Object

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

Constructor Detail

CastExpression

public CastExpression(Expression left,
                      java.lang.String className)

Constructor for an expression representing the cast of the left expression.

Parameters:

left - Expression being cast

className - Name of the class to cast to

Method Detail

getClassName

public java.lang.String getClassName()

The name of the class to cast to.

Returns:

The class to cast to.

bind

public Symbol bind(SymbolTable symtbl)

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 java.lang.String toString()

Overrides:

toString in class java.lang.Object