com.caucho.el

Class ConditionalExpr

java.lang.Object

javax.el.Expression

javax.el.ValueExpression

com.caucho.el.Expr

com.caucho.el.ConditionalExpr

All Implemented Interfaces:

java.io.Serializable

public class ConditionalExpr
extends Expr

Represents a conditional expression

See Also:

Serialized Form

Field Summary

Fields inherited from class com.caucho.el.Expr

L, log

Constructor Summary

Constructors

Constructor and Description
ConditionalExpr(Expr test, Expr trueExpr, Expr falseExpr) Creates the conditional expression.

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object o) Returns true for equal strings.
boolean	evalBoolean(ELContext env) Evaluate the expression as a boolean
double	evalDouble(ELContext env) Evaluate the expression as a double
long	evalLong(ELContext env) Evaluate the expression as a long
java.lang.String	evalString(ELContext env) Evaluate the expression as a string
java.lang.Object	getValue(ELContext env) Evaluate the expression as an object.
boolean	isConstant() Returns true if this is a constant expression.
void	printCreate(WriteStream os) Prints the Java code to recreate the expr
java.lang.String	toString() Returns a readable representation of the expr.

Methods inherited from class com.caucho.el.Expr

coerceToType, createField, createField, createMethod, error, evalBigDecimal, evalBigInteger, evalCharacter, evalObject, evalPeriod, evalStringWithNull, getExpectedType, getExpressionString, getMethodInfo, getType, hashCode, invocationError, invoke, isDouble, isDoubleString, isLiteralText, isReadOnly, print, print, printEscaped, printEscapedString, setProperty, setValue, toBigDecimal, toBigInteger, toBoolean, toCharacter, toClass, toDouble, toEnum, toLong, toStream, toStream, toStream, toStreamEscaped, toStreamEscaped, toStreamEscaped, toString, toString, toString, toString, toString, toStringWithNull

Methods inherited from class javax.el.ValueExpression

getValueReference

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

ConditionalExpr

public ConditionalExpr(Expr test,
                       Expr trueExpr,
                       Expr falseExpr)

Creates the conditional expression.

Parameters:

test - the conditional expressions test.

trueExpr - the true subexpression

falseExpr - the false subexpression

Method Detail

isConstant

public boolean isConstant()

Returns true if this is a constant expression.

Overrides:

isConstant in class Expr

getValue

public java.lang.Object getValue(ELContext env)
                          throws ELException

Evaluate the expression as an object.

Specified by:

getValue in class Expr

Parameters:

env - the variable environment

Returns:

the result as an object

Throws:

ELException

evalLong

public long evalLong(ELContext env)
              throws ELException

Evaluate the expression as a long

Overrides:

evalLong in class Expr

Parameters:

env - the variable environment

Returns:

the result as an long

Throws:

ELException

evalDouble

public double evalDouble(ELContext env)
                  throws ELException

Evaluate the expression as a double

Overrides:

evalDouble in class Expr

Parameters:

env - the variable environment

Returns:

the result as an double

Throws:

ELException

evalString

public java.lang.String evalString(ELContext env)
                            throws ELException

Evaluate the expression as a string

Overrides:

evalString in class Expr

Parameters:

env - the variable environment

Returns:

the result as a string

Throws:

ELException

evalBoolean

public boolean evalBoolean(ELContext env)
                    throws ELException

Evaluate the expression as a boolean

Overrides:

evalBoolean in class Expr

Parameters:

env - the variable environment

Returns:

the result as a boolean

Throws:

ELException

printCreate

public void printCreate(WriteStream os)
                 throws java.io.IOException

Prints the Java code to recreate the expr

Overrides:

printCreate in class Expr

Parameters:

os - the output stream to the *.java file

Throws:

java.io.IOException

equals

public boolean equals(java.lang.Object o)

Returns true for equal strings.

Overrides:

equals in class Expr

toString

public java.lang.String toString()

Returns a readable representation of the expr.

Specified by:

toString in class Expr