com.caucho.el
Class StringLiteral

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

All Implemented Interfaces:

java.io.Serializable

public class StringLiteral
extends Expr

Represents a string literal expression

See Also:

Serialized Form

Field Summary

Fields inherited from class com.caucho.el.Expr

L, log

Constructor Summary

StringLiteral(java.lang.String value)

Method Summary

boolean	equals(java.lang.Object o) Returns true for equal strings.
java.lang.String	evalString(ELContext env) Evaluate the expr as a string
MethodInfo	getMethodInfo(ELContext env, java.lang.Class<?> returnType, java.lang.Class<?>[] argTypes) Evaluates the expression, returning an object.
java.lang.String	getValue() Returns the value of the literal.
java.lang.Object	getValue(ELContext env) Evaluate the expr as an object.
java.lang.Object	invoke(ELContext env, java.lang.Class<?>[] argTypes, java.lang.Object[] args) Evaluates the expression, returning an object.
boolean	isConstant() Returns true if the expression is constant.
boolean	isLiteralText() Returns true if the expression is literal text
boolean	print(WriteStream out, ELContext env, boolean isEscape) Evalutes directly to the output.
void	printCreate(WriteStream os) Prints the code to create an LongLiteral.
java.lang.String	toString() Returns a printable version.

Methods inherited from class com.caucho.el.Expr

coerceToType, createField, createField, createMethod, error, evalBigDecimal, evalBigInteger, evalBoolean, evalCharacter, evalDouble, evalLong, evalObject, evalPeriod, evalStringWithNull, getExpectedType, getExpressionString, getType, hashCode, invocationError, isDouble, isDoubleString, isReadOnly, print, printEscaped, printEscapedString, setProperty, setValue, toBigDecimal, toBigInteger, toBoolean, toCharacter, 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

StringLiteral

public StringLiteral(java.lang.String value)

Method Detail

isConstant

public boolean isConstant()

Returns true if the expression is constant.

Overrides:

isConstant in class Expr

isLiteralText

public boolean isLiteralText()

Returns true if the expression is literal text

Overrides:

isLiteralText in class Expr

getMethodInfo

public MethodInfo getMethodInfo(ELContext env,
                                java.lang.Class<?> returnType,
                                java.lang.Class<?>[] argTypes)
                         throws ELException

Evaluates the expression, returning an object.

Overrides:

getMethodInfo in class Expr

Parameters:

env - the variable environment

Returns:

the value of the expression as an object

Throws:

ELException

invoke

public java.lang.Object invoke(ELContext env,
                               java.lang.Class<?>[] argTypes,
                               java.lang.Object[] args)
                        throws ELException

Evaluates the expression, returning an object.

Overrides:

invoke in class Expr

Parameters:

env - the variable environment

Returns:

the value of the expression as an object

Throws:

ELException

getValue

public java.lang.String getValue()

Returns the value of the literal.

getValue

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

Evaluate the expr as an object.

Specified by:

getValue in class Expr

Parameters:

env - the variable environment

Returns:

the value of the expression as an object

Throws:

ELException

evalString

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

Evaluate the expr as a string

Overrides:

evalString in class Expr

Parameters:

env - the variable environment

Returns:

the value of the expression as a string

Throws:

ELException

print

public boolean print(WriteStream out,
                     ELContext env,
                     boolean isEscape)
              throws java.io.IOException,
                     ELException

Evalutes directly to the output.

Overrides:

print in class Expr

Parameters:

out - the output writer

env - the variable environment

isEscape - 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 code to create an LongLiteral.

Overrides:

printCreate in class Expr

Parameters:

os - the stream to the *.java page

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 printable version.

Specified by:

toString in class Expr