oracle.jbo.server.rules
Class JboBaseValidator

java.lang.Object
  oracle.jbo.rules.AbstractValidator
      oracle.jbo.server.rules.JboBaseValidator

Direct Known Subclasses:

JboCompareValidator, JboListValidator, JboRangeValidator

public abstract class JboBaseValidator

extends AbstractValidator

The superclass for all pre-defined validators.

This class implements the basic functionality of storing the value of either an attribute to be validated, or the entity or application module reference on which validation is to be invoked. Subclasses must provide validateValue, which performs the actual validation test.

Since:

Jdeveloper 3.0

Field Summary

protected java.lang.Object	mLValue
protected AttributeDefImpl	mValidatingAttr

Fields inherited from class oracle.jbo.rules.AbstractValidator

mDescription, mErrorMessageClass, mMsgId, mValidatingAttrName

Constructor Summary

JboBaseValidator()

Method Summary

protected void	initialize()
protected void	raiseException(java.lang.Exception e, PropertyChangeEvent evObj)
protected void	setNewValue(java.lang.Object newValue) When the newValue is an Entity, get the attribute's value by using the getAttribute method on the entity.
void	setValidatingAttribute(AttributeDefImpl attr) Sets the validating attribute.
void	setValidatingAttribute(EntityDefImpl beanInfo, java.lang.String str) Sets the validating attribute by name.
abstract boolean	validateValue(java.lang.Object value) Validates an object.
void	vetoableChange(PropertyChangeEvent evObj) Invokes validateValue() on a value contained in a constrained property.

Methods inherited from class oracle.jbo.rules.AbstractValidator

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

Methods inherited from class java.lang.Object

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

Field Detail

mLValue

protected transient java.lang.Object mLValue

mValidatingAttr

protected AttributeDefImpl mValidatingAttr

Constructor Detail

JboBaseValidator

public JboBaseValidator()

Method Detail

initialize

protected void initialize()

vetoableChange

public void vetoableChange(PropertyChangeEvent evObj)
                    throws JboException

Invokes validateValue() on a value contained in a constrained property.

.

Parameters:

evObj - a PropertyChangeEvent containing a property to be validated.

Throws:

JboException - if validation fails, with CSMessageBundle error code EXC_VAL_ATTR_SET_FAILED.

raiseException

protected void raiseException(java.lang.Exception e,
                              PropertyChangeEvent evObj)

validateValue

public abstract boolean validateValue(java.lang.Object value)
                               throws java.lang.Exception

Validates an object.

Subclasses must implement this method.

Parameters:

value - the object to be validated.

Returns:

true if the object is valid.

Throws:

java.lang.Exception - if validation cannot be performed.

setNewValue

protected void setNewValue(java.lang.Object newValue)
                    throws java.lang.Exception

When the newValue is an Entity, get the attribute's value by using the getAttribute method on the entity. Otherwise, newValue should be a value to compare in this validator.

Parameters:

newValue - either the attribute's value or a value to use to compare in the validator.

Throws:

java.lang.Exception

setValidatingAttribute

public void setValidatingAttribute(AttributeDefImpl attr)

Sets the validating attribute.

Parameters:

attr - an attribute.

setValidatingAttribute

public void setValidatingAttribute(EntityDefImpl beanInfo,
                                   java.lang.String str)

Sets the validating attribute by name.

This variant is used when the validator is attached to an entity, rather than to an attribute.

Parameters:

beanInfo - the entity containing the attribute.

str - an attribute name as a string.