com.caucho.el

Class InterpolateExpr

java.lang.Object

javax.el.Expression

javax.el.ValueExpression

com.caucho.el.Expr

com.caucho.el.InterpolateExpr

All Implemented Interfaces:

java.io.Serializable

public class InterpolateExpr
extends Expr

Representing a string interpolation expression.

See Also:

Serialized Form

Field Summary

Fields inherited from class com.caucho.el.Expr

L, log

Constructor Summary

Constructors

Constructor and Description
InterpolateExpr(Expr left, Expr right) Create a new interpolation expression.

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object o) Returns true for equal strings.
java.lang.String	evalString(ELContext env) Evaluate the expression as an object.
java.lang.Object	getValue(ELContext env) Evaluate the expression as an object.
boolean	isConstant() Returns true if this is a constant expression.
boolean	print(WriteStream out, ELContext env, boolean escapeXml) Prints the interpolated value directly to the output.
void	printCreate(WriteStream os) Prints the code to create an LongLiteral.
java.lang.String	toString()

Methods inherited from class com.caucho.el.Expr

coerceToType, createField, createField, createMethod, error, evalBigDecimal, evalBigInteger, evalBoolean, evalCharacter, evalDouble, evalLong, evalObject, evalPeriod, evalStringWithNull, getExpectedType, getExpressionString, getMethodInfo, getType, hashCode, invocationError, invoke, isDouble, isDoubleString, isLiteralText, isReadOnly, 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

InterpolateExpr

public InterpolateExpr(Expr left,
                       Expr right)

Create a new interpolation expression.

Parameters:

left - the left subexpression

right - the right 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 string value

Throws:

ELException

evalString

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

Evaluate the expression as an object.

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 escapeXml)
              throws java.io.IOException,
                     ELException

Prints the interpolated value directly to the output.

Overrides:

print in class Expr

Parameters:

out - the output stream

env - the variable environment

escapeXml - if true, then escape the output

Returns:

false, since the interpolated value is never null

Throws:

java.io.IOException

ELException

toString

public java.lang.String toString()

Specified by:

toString in class Expr

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