local.tomas.expr.eval
Class StringValue

java.lang.Object
  local.tomas.expr.eval.ExpressionValue
      local.tomas.expr.eval.StringValue

public class StringValue
extends ExpressionValue

String expression value.

Author:

tomas.teubner

Field Summary

Fields inherited from class local.tomas.expr.eval.ExpressionValue

NULL

Constructor Summary

StringValue(String value)
Construct value from string.

Method Summary

ExpressionValue	evalConcatenation(ExpressionValue right) Evaluate string concatenation.
ExpressionValue	evalCountFunction() Evaluate count function.
ExpressionValue	evalEquality(ExpressionValue right) Evaluate equality comparison.
ExpressionValue	evalGreaterEqual(ExpressionValue right) Evaluate greater equal comparison.
ExpressionValue	evalGreaterThan(ExpressionValue right) Evaluate greater than comparison.
ExpressionValue	evalInequality(ExpressionValue right) Evaluate inequality comparison.
ExpressionValue	evalInTerm(ExpressionValue right) Evaluate "in" term.
ExpressionValue	evalLengthFunction() Evaluate length function.
ExpressionValue	evalLessEqual(ExpressionValue right) Evaluate less equal comparison.
ExpressionValue	evalLessThan(ExpressionValue right) Evaluate less than comparison.
ExpressionValue	evalLike(ExpressionValue right) Evaluate like term.
ExpressionValue	evalLowerFunction() Evaluate lower function.
ExpressionValue	evalMatch(ExpressionValue right) Evaluate regular expression matching term.
ExpressionValue	evalMaxFunction() Evaluate max function.
ExpressionValue	evalMinFunction() Evaluate min function.
ExpressionValue	evalNotLikeTerm(ExpressionValue right) Evaluate not like term.
ExpressionValue	evalReplaceFunction(ExpressionValue pattern, ExpressionValue replacement) Evaluate replacement function.
ExpressionValue	evalSubstrFunction(ExpressionValue pos, ExpressionValue length) Evaluate substring function.
ExpressionValue	evalTrimFunction() Evaluate trim function.
ExpressionValue	evalUpperFunction() Evaluate upper function.
Object	getObjectValue() Return the Java object representing this expression value.
ExpressionType	getType() Get the type of this expression value.
String	getValue() Get value.
void	setValue(String value) Set value.
String	toString()

Methods inherited from class local.tomas.expr.eval.ExpressionValue

create, evalAbsFunction, evalAddition, evalAnd, evalAvgFunction, evalDivision, evalIsNotNull, evalIsNull, evalMultiplication, evalNegation, evalOrTerm, evalSignChange, evalSubtraction, evalSumFunction

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

StringValue

public StringValue(String value)

Construct value from string.

Parameters:

value - the string

Method Detail

getValue

public String getValue()

Get value.

Returns:

Returns the value.

setValue

public void setValue(String value)

Set value.

Parameters:

value - The value to set.

getType

public ExpressionType getType()

Description copied from class: ExpressionValue

Get the type of this expression value.

Specified by:

getType in class ExpressionValue

Returns:

the type

getObjectValue

public Object getObjectValue()

Description copied from class: ExpressionValue

Return the Java object representing this expression value.

Specified by:

getObjectValue in class ExpressionValue

Returns:

the Java object

evalConcatenation

public ExpressionValue evalConcatenation(ExpressionValue right)
                                  throws ExpressionException

Description copied from class: ExpressionValue

Evaluate string concatenation.

Overrides:

evalConcatenation in class ExpressionValue

Parameters:

right - right operand

Returns:

result

Throws:

ExpressionException

evalCountFunction

public ExpressionValue evalCountFunction()

Description copied from class: ExpressionValue

Evaluate count function.

Overrides:

evalCountFunction in class ExpressionValue

Returns:

integer value 1

evalEquality

public ExpressionValue evalEquality(ExpressionValue right)
                             throws ExpressionException

Description copied from class: ExpressionValue

Evaluate equality comparison.

Overrides:

evalEquality in class ExpressionValue

Parameters:

right - right operand

Returns:

result

Throws:

ExpressionException

evalGreaterEqual

public ExpressionValue evalGreaterEqual(ExpressionValue right)
                                 throws ExpressionException

Description copied from class: ExpressionValue

Evaluate greater equal comparison.

Overrides:

evalGreaterEqual in class ExpressionValue

Parameters:

right - right operand

Returns:

result

Throws:

ExpressionException

evalGreaterThan

public ExpressionValue evalGreaterThan(ExpressionValue right)
                                throws ExpressionException

Description copied from class: ExpressionValue

Evaluate greater than comparison.

Overrides:

evalGreaterThan in class ExpressionValue

Parameters:

right - right operand

Returns:

result

Throws:

ExpressionException

evalInequality

public ExpressionValue evalInequality(ExpressionValue right)
                               throws ExpressionException

Description copied from class: ExpressionValue

Evaluate inequality comparison.

Overrides:

evalInequality in class ExpressionValue

Parameters:

right - right operand

Returns:

result

Throws:

ExpressionException

evalInTerm

public ExpressionValue evalInTerm(ExpressionValue right)
                           throws ExpressionException

Description copied from class: ExpressionValue

Evaluate "in" term.

Overrides:

evalInTerm in class ExpressionValue

Parameters:

right - right operand

Throws:

ExpressionException - when invoked

evalLengthFunction

public ExpressionValue evalLengthFunction()

Description copied from class: ExpressionValue

Evaluate length function.

Overrides:

evalLengthFunction in class ExpressionValue

Returns:

the integer length

evalLessEqual

public ExpressionValue evalLessEqual(ExpressionValue right)
                              throws ExpressionException

Description copied from class: ExpressionValue

Evaluate less equal comparison.

Overrides:

evalLessEqual in class ExpressionValue

Parameters:

right - right operand

Returns:

result

Throws:

ExpressionException

evalLessThan

public ExpressionValue evalLessThan(ExpressionValue right)
                             throws ExpressionException

Description copied from class: ExpressionValue

Evaluate less than comparison.

Overrides:

evalLessThan in class ExpressionValue

Parameters:

right - right operand

Returns:

result

Throws:

ExpressionException

evalLike

public ExpressionValue evalLike(ExpressionValue right)
                         throws ExpressionException

Description copied from class: ExpressionValue

Evaluate like term.

Overrides:

evalLike in class ExpressionValue

Parameters:

right - right operand

Returns:

result

Throws:

ExpressionException

evalLowerFunction

public ExpressionValue evalLowerFunction()

Description copied from class: ExpressionValue

Evaluate lower function.

Overrides:

evalLowerFunction in class ExpressionValue

Returns:

copy of this value converted to lower case

evalMaxFunction

public ExpressionValue evalMaxFunction()

Description copied from class: ExpressionValue

Evaluate max function.

Overrides:

evalMaxFunction in class ExpressionValue

Returns:

this value

evalMinFunction

public ExpressionValue evalMinFunction()

Description copied from class: ExpressionValue

Evaluate min function.

Overrides:

evalMinFunction in class ExpressionValue

Returns:

this value

evalNotLikeTerm

public ExpressionValue evalNotLikeTerm(ExpressionValue right)
                                throws ExpressionException

Description copied from class: ExpressionValue

Evaluate not like term.

Overrides:

evalNotLikeTerm in class ExpressionValue

Parameters:

right - right operand

Returns:

result

Throws:

ExpressionException

evalSubstrFunction

public ExpressionValue evalSubstrFunction(ExpressionValue pos,
                                          ExpressionValue length)
                                   throws ExpressionException

Description copied from class: ExpressionValue

Evaluate substring function.

Overrides:

evalSubstrFunction in class ExpressionValue

Parameters:

pos - starting position

length - length

Returns:

result

Throws:

ExpressionException

evalTrimFunction

public ExpressionValue evalTrimFunction()

Description copied from class: ExpressionValue

Evaluate trim function.

Overrides:

evalTrimFunction in class ExpressionValue

Returns:

copy of this value trimmed

evalUpperFunction

public ExpressionValue evalUpperFunction()

Description copied from class: ExpressionValue

Evaluate upper function.

Overrides:

evalUpperFunction in class ExpressionValue

Returns:

copy of this value converted to upper case

evalMatch

public ExpressionValue evalMatch(ExpressionValue right)
                          throws ExpressionException

Description copied from class: ExpressionValue

Evaluate regular expression matching term.

Overrides:

evalMatch in class ExpressionValue

Parameters:

right - right operand

Returns:

result

Throws:

ExpressionException

evalReplaceFunction

public ExpressionValue evalReplaceFunction(ExpressionValue pattern,
                                           ExpressionValue replacement)
                                    throws ExpressionException

Description copied from class: ExpressionValue

Evaluate replacement function.

Overrides:

evalReplaceFunction in class ExpressionValue

Parameters:

pattern - regular expression to match

replacement - replacement value

Returns:

result

Throws:

ExpressionException

toString

public String toString()

Overrides:

toString in class Object