net.sf.mmm.util.validation.base

Class ValidatorCompare<V extends Comparable<V>>

java.lang.Object

net.sf.mmm.util.validation.base.AbstractValidator<V>

net.sf.mmm.util.validation.base.AbstractValueValidator<V>

net.sf.mmm.util.validation.base.ValidatorCompare<V>

Type Parameters:

V - is the generic type of the value to validate.

All Implemented Interfaces:

ValueValidator<V>

public class ValidatorCompare<V extends Comparable<V>>
extends AbstractValueValidator<V>

This is a ValueValidator that validates that a value is satisfies a given CompareOperator -operation for given value to compare to.

Since:

3.1.0

Author:

Joerg Hohwiller (hohwille at users.sourceforge.net)

Field Summary

Fields

Modifier and Type	Field and Description
private CompareOperator	comparator The comparison operator.
private boolean	dynamic
private String	source
private AttributeReadValue<V>	valueSource

Constructor Summary

Constructors

Constructor and Description
ValidatorCompare(CompareOperator comparator, AttributeReadValue<V> valueSource, String source) The constructor.
ValidatorCompare(CompareOperator comparator, V value) The constructor.

Method Summary

Modifier and Type	Method and Description
boolean	isDynamic() This method determines if this ValueValidator is dynamic.
protected NlsMessage	validateNotNull(V value) This method performs the validation in case value is NOT null.

Methods inherited from class net.sf.mmm.util.validation.base.AbstractValueValidator

validate, validateNull

Methods inherited from class net.sf.mmm.util.validation.base.AbstractValidator

createBundle, getCode, isMandatory, validate

Methods inherited from class java.lang.Object

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

Field Detail

comparator

private final CompareOperator comparator

The comparison operator.

valueSource

private final AttributeReadValue<V extends Comparable<V>> valueSource

See Also:

validateNotNull(Comparable)

source

private final String source

See Also:

validateNotNull(Comparable)

dynamic

private final boolean dynamic

See Also:

isDynamic()

Constructor Detail

ValidatorCompare

public ValidatorCompare(CompareOperator comparator,
                        AttributeReadValue<V> valueSource,
                        String source)

The constructor.

Parameters:

comparator - is the comparison operator used to compare the value to validate (first argument) with the value of the given valueSource.

valueSource - is a reference to something that provides a value and will be evaluated dynamically on every validation.

source - is a brief description of the valueSource for potential failure messages. E.g. in case of a user interface the label of the field providing the value. May be null.

ValidatorCompare

public ValidatorCompare(CompareOperator comparator,
                        V value)

The constructor.

Parameters:

comparator - is the comparison operator used to compare the value to validate (first argument) with the value of the given value.

value - is the fixed value to compare to.

Method Detail

isDynamic

public boolean isDynamic()

This method determines if this ValueValidator is dynamic. Here dynamic means that the validation of the same input may not always return the same validation result (e.g. it holds references to instances that have dynamic impact on the validation).

Overrides:

isDynamic in class AbstractValidator<V extends Comparable<V>>

Returns:

true if this ValueValidator is dynamic, false otherwise.

validateNotNull

protected NlsMessage validateNotNull(V value)

This method performs the validation in case value is NOT null. This method contains the actual custom logic for the validation. It is therefore designed in a way that makes it most simple to implement custom validators.
ATTENTION:
For internationalization you should not directly return string literals but use NlsMessage instead.

Specified by:

validateNotNull in class AbstractValueValidator<V extends Comparable<V>>

Parameters:

value - is the value to validate.

Returns:

the failure message or null if the the given value is valid.