com.caucho.el
Class DoubleLiteral

java.lang.Object
  javax.el.Expression
      javax.el.ValueExpression
          com.caucho.el.Expr
              com.caucho.el.DoubleLiteral

All Implemented Interfaces:

java.io.Serializable

public class DoubleLiteral
extends Expr

Represents a double literal expression.

See Also:

Serialized Form

Field Summary

Fields inherited from class com.caucho.el.Expr

L, log

Constructor Summary

DoubleLiteral(double value)
Create a new double literal.

Method Summary

boolean	equals(java.lang.Object o) Returns true for equal longs.
double	evalDouble(ELContext env) Evaluate the expression as an object as a double
long	evalLong(ELContext env) Evaluate the expression as an object as a long.
java.lang.Object	getValue(ELContext env) Evaluate the expression as an object.
boolean	isConstant() Returns true if the expression is constant.
boolean	print(JspWriter out, ELContext env, boolean escapeXml) Evaluates directly to the output.
void	printCreate(WriteStream os) Prints the *.java code to create an DoubleLiteral.
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, evalBoolean, evalCharacter, evalObject, evalPeriod, evalString, evalStringWithNull, getExpectedType, getExpressionString, getMethodInfo, getType, hashCode, invocationError, invoke, isDouble, isDoubleString, isLiteralText, isReadOnly, print, printEscaped, printEscapedString, setProperty, setValue, toBigDecimal, toBigInteger, toBoolean, toCharacter, toDouble, toLong, toStream, toStream, toStream, toStreamEscaped, toStreamEscaped, toStreamEscaped, toString, toString, toString, toString, toString, toStringWithNull

Methods inherited from class java.lang.Object

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

Constructor Detail

DoubleLiteral

public DoubleLiteral(double value)

Create a new double literal.

Method Detail

isConstant

public boolean isConstant()

Returns true if the expression is constant.

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 Double constant

Throws:

ELException

evalLong

public long evalLong(ELContext env)
              throws ELException

Evaluate the expression as an object as a long.

Overrides:

evalLong in class Expr

Parameters:

env - the variable environment

Returns:

the double value casted to a long

Throws:

ELException

evalDouble

public double evalDouble(ELContext env)
                  throws ELException

Evaluate the expression as an object as a double

Overrides:

evalDouble in class Expr

Parameters:

env - the variable environment

Returns:

the double value

Throws:

ELException

print

public boolean print(JspWriter out,
                     ELContext env,
                     boolean escapeXml)
              throws java.io.IOException,
                     ELException

Evaluates directly to the output. The method returns true if the default value should be printed instead.

Overrides:

print in class Expr

Parameters:

out - the output writer

env - the variable environment

escapeXml - if true, escape reserved XML

Returns:

true if the object is null, otherwise false

Throws:

java.io.IOException

ELException

printCreate

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

Prints the *.java code to create an DoubleLiteral.

Overrides:

printCreate in class Expr

Parameters:

os - the stream to the generated *.java

Throws:

java.io.IOException

equals

public boolean equals(java.lang.Object o)

Returns true for equal longs.

Overrides:

equals in class Expr

toString

public java.lang.String toString()

Returns a readable representation of the expr.

Specified by:

toString in class Expr