oracle.jbo.rules
Class JboLengthValidator

java.lang.Object
oracle.jbo.rules.AbstractValidator
oracle.jbo.rules.JboAbstractValidator
oracle.jbo.rules.JboLengthValidator

All Implemented Interfaces:

JboValidatorInterface

public class JboLengthValidator

extends JboAbstractValidator

implements JboValidatorInterface

A validator that tests the length of the attribute values by comparing them with a pre-defined length value.

The length to be validated is designated as the left-hand operand of a relation operation. The validator provides the right-hand operand, the comparison datatype and the relation operator.

Since:

Jdeveloper 3.0

Field Summary

static int	BYTE
static int	CHARACTER
static int	EQUALTO
static int	GREATERTHAN
static int	GREATERTHANEQUALTO
static int	LESSTHAN
static int	LESSTHANEQUALTO
protected int	mDataType
protected int	mOperType
protected java.lang.Object	rhsValue

Fields inherited from class oracle.jbo.rules.JboAbstractValidator

mValidatingAttr, mValidatingAttrName

Fields inherited from class oracle.jbo.rules.AbstractValidator

mbInverse, mDescription, mErrorMessageClass, mMsgId

Constructor Summary

JboLengthValidator()
Creates an uninitialized length validator.

JboLengthValidator(boolean inverse, int operType, int dataType, java.lang.Object rhsValue)
Creates an initialized length validator.

Method Summary

static int	convertDataType(java.lang.String typeArg) Interprets a string as one of the comparison datatype constants defined in this class.
static int	convertOperType(java.lang.String typeArg) Interprets a string as one of the comparison operator constants defined in this class.
int	getDataType() Gets this validator's comparison datatype.
java.lang.String	getOperatorTypeString() Converts this validator's comparison operator to its symbolic form.
int	getOperType() Gets this validator's comparison operator.
java.lang.Object	getRhsValue() Gets the right-side operand of this validator's expression.
protected void	initialize(JboValidatorContext evObj)
void	setDataType(int typeArg) Sets this validator's comparison datatype.
void	setOperType(int typeArg) Sets this validator's comparison operator.
void	setRhsValue(java.lang.Object rhsValueArg) Sets the right-side operand of this validator's expression.
java.lang.String	toString() Internal: For debugging purposes only.
boolean	validateValue(java.lang.Object value) Validate an object by comparing its length with a pre-defined length value.

Methods inherited from class oracle.jbo.rules.JboAbstractValidator

getValidatingAttributeName, getValueToValidate, setNewValue, setValidatingAttribute, setValidatingAttribute, setValidatingAttributeName, validate

Methods inherited from class oracle.jbo.rules.AbstractValidator

convertToJava, getDescription, getErrorMessageClass, getErrorMsgId, getInverse, setDescription, setErrorMessageClass, setErrorMsgId, setInverse

Methods inherited from class java.lang.Object

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

Methods inherited from interface oracle.jbo.rules.JboValidatorInterface

getDescription, setDescription, validate

Field Detail

EQUALTO

public static final int EQUALTO

See Also:

Constant Field Values

LESSTHAN

public static final int LESSTHAN

See Also:

Constant Field Values

GREATERTHAN

public static final int GREATERTHAN

See Also:

Constant Field Values

LESSTHANEQUALTO

public static final int LESSTHANEQUALTO

See Also:

Constant Field Values

GREATERTHANEQUALTO

public static final int GREATERTHANEQUALTO

See Also:

Constant Field Values

mOperType

protected int mOperType

CHARACTER

public static final int CHARACTER

See Also:

Constant Field Values

BYTE

public static final int BYTE

See Also:

Constant Field Values

mDataType

protected int mDataType

rhsValue

protected java.lang.Object rhsValue

Constructor Detail

JboLengthValidator

public JboLengthValidator()

Creates an uninitialized length validator.

The methods setOperType() ,setDataType() and setRhsValue() must be invoked before validation can be performed.

JboLengthValidator

public JboLengthValidator(boolean inverse,
                          int operType,
                          int dataType,
                          java.lang.Object rhsValue)

Creates an initialized length validator.

Parameters:

inverse - if true the logic of this validator's comparison relation is inverted.

operType - this validator's comparison operator; one of the comparison operator constants defined in this class.

dataType - this validator's comparison datatype; one of the datatype constants defined in this class.

rhsValue - this validator's right-hand operand, a reference object containing a numeric value.

Method Detail

initialize

protected void initialize(JboValidatorContext evObj)

Overrides:

initialize in class JboAbstractValidator

validateValue

public boolean validateValue(java.lang.Object value)

Validate an object by comparing its length with a pre-defined length value.

The length of the value parameter is the left-hand operand of this validator's comparison relation. The operator is set by setOperType() and the right-hand operand is the value set by setRhsValue().

This method is called by AbstractValidator#vetoableChange().

Specified by:

validateValue in class JboAbstractValidator

Parameters:

value - the object whose length is to be validated.

Returns:

true if the relation holds, or false if the relation does not hold or if the operator or an operand is invalid or uninitialized.

setOperType

public void setOperType(int typeArg)

Sets this validator's comparison operator.

Parameters:

typeArg - one of the comparison operator constants defined in this class.

getOperType

public int getOperType()

Gets this validator's comparison operator.

setDataType

public void setDataType(int typeArg)

Sets this validator's comparison datatype.

Parameters:

typeArg - one of the datatype constants defined in this class.

getDataType

public int getDataType()

Gets this validator's comparison datatype.

setRhsValue

public void setRhsValue(java.lang.Object rhsValueArg)

Sets the right-side operand of this validator's expression.

Parameters:

rhsValueArg - a reference object containing a numeric value.

getRhsValue

public java.lang.Object getRhsValue()

Gets the right-side operand of this validator's expression.

toString

public java.lang.String toString()

Internal: For debugging purposes only.

convertOperType

public static int convertOperType(java.lang.String typeArg)

Interprets a string as one of the comparison operator constants defined in this class.

Parameters:

typeArg - a string, the textual name of a comparison operator.

Returns:

a comparison operator constant. An unrecognizable string defaults to EQUALTO.

convertDataType

public static int convertDataType(java.lang.String typeArg)

Interprets a string as one of the comparison datatype constants defined in this class.

Parameters:

typeArg - a string, the textual name of a comparison datatype.

Returns:

a comparison datatype constant. An unrecognizable string defaults to CHARACTER.

getOperatorTypeString

public java.lang.String getOperatorTypeString()

Converts this validator's comparison operator to its symbolic form.

Returns:

a comparison symbol. If the comparison operator is uninitialized or invalid the null string is returned.