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java.lang.Objectjavax.el.Expression
javax.el.ValueExpression
com.caucho.el.Expr
com.caucho.el.UnaryExpr
public class UnaryExpr
Represents a unary expression.
Field Summary |
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Fields inherited from class com.caucho.el.Expr |
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L, log |
Method Summary | |
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static Expr |
create(int op,
Expr expr)
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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.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 UnaryExpr. |
java.lang.String |
toString()
Returns a readable representation of the expr. |
Methods inherited from class com.caucho.el.Expr |
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coerceToType, createField, createField, createMethod, error, evalBigDecimal, evalBigInteger, evalCharacter, evalObject, evalPeriod, evalString, 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 |
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getValueReference |
Methods inherited from class java.lang.Object |
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clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
Method Detail |
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public static Expr create(int op, Expr expr)
public boolean isConstant()
isConstant
in class Expr
public java.lang.Object getValue(ELContext env) throws ELException
getValue
in class Expr
env
- the variable resolver
ELException
public boolean evalBoolean(ELContext env) throws ELException
evalBoolean
in class Expr
env
- the variable resolver
ELException
public long evalLong(ELContext env) throws ELException
evalLong
in class Expr
env
- the variable resolver
ELException
public double evalDouble(ELContext env) throws ELException
evalDouble
in class Expr
env
- the variable environment
ELException
public void printCreate(WriteStream os) throws java.io.IOException
printCreate
in class Expr
os
- the stream to the *.java page
java.io.IOException
public boolean equals(java.lang.Object o)
equals
in class Expr
public java.lang.String toString()
toString
in class Expr
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