javax.faces.validator

Class RegexValidator

java.lang.Object

javax.faces.validator.RegexValidator

All Implemented Interfaces:

EventListener, PartialStateHolder, StateHolder, Validator

public class RegexValidator
extends Object
implements Validator, PartialStateHolder

A Validator that checks against a Regular Expression (which is the pattern property). The pattern must resolve to a String that follows the java.util.regex standards.

Since:

2.0

Field Summary

Fields

Modifier and Type	Field and Description
static String	MATCH_EXCEPTION_MESSAGE_ID The message identifier of the FacesMessage to be created if the act of matching the value against the pattern returned from getPattern() fails because of a PatternSyntaxException.
static String	NOT_MATCHED_MESSAGE_ID The message identifier of the FacesMessage to be created if the act of matching the value against the pattern returned from getPattern() fails because the value does not match the pattern.
static String	PATTERN_NOT_SET_MESSAGE_ID The message identifier of the FacesMessage to be created if the value returned from getPattern() is null or the empty String.
static String	VALIDATOR_ID The standard converter id for this converter.

Fields inherited from interface javax.faces.validator.Validator

NOT_IN_RANGE_MESSAGE_ID

Constructor Summary

Constructors

Constructor and Description
RegexValidator()

Method Summary

Modifier and Type	Method and Description
void	clearInitialState() Reset the PartialStateHolder to a non-delta tracking state.
String	getPattern() Return the ValueExpression that yields the regular expression pattern when evaluated.
boolean	initialStateMarked() Return true if delta state changes are being tracked, otherwise false
boolean	isTransient() If true, the Object implementing this interface must not participate in state saving or restoring.
void	markInitialState() The runtime must ensure that the PartialStateHolder.markInitialState() method is called on each instance of this interface in the view at the appropriate time to indicate the component is in its initial state.
void	restoreState(FacesContext context, Object state) Perform any processing required to restore the state from the entries in the state Object.
Object	saveState(FacesContext context) Gets the state of the instance as a Serializable Object.
void	setPattern(String pattern) The Regular Expression property to validate against.
void	setTransient(boolean transientValue) Denotes whether or not the Object implementing this interface must or must not participate in state saving or restoring.
void	validate(FacesContext context, UIComponent component, Object value) Validate a String against a regular expression pattern.

Methods inherited from class java.lang.Object

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

Field Detail

VALIDATOR_ID

public static final String VALIDATOR_ID

The standard converter id for this converter.

See Also:

Constant Field Values

PATTERN_NOT_SET_MESSAGE_ID

public static final String PATTERN_NOT_SET_MESSAGE_ID

The message identifier of the FacesMessage to be created if the value returned from getPattern() is null or the empty String.

See Also:

Constant Field Values

NOT_MATCHED_MESSAGE_ID

public static final String NOT_MATCHED_MESSAGE_ID

The message identifier of the FacesMessage to be created if the act of matching the value against the pattern returned from getPattern() fails because the value does not match the pattern.

See Also:

Constant Field Values

MATCH_EXCEPTION_MESSAGE_ID

public static final String MATCH_EXCEPTION_MESSAGE_ID

The message identifier of the FacesMessage to be created if the act of matching the value against the pattern returned from getPattern() fails because of a PatternSyntaxException.

See Also:

Constant Field Values

Constructor Detail

RegexValidator

public RegexValidator()

Method Detail

setPattern

public void setPattern(String pattern)

The Regular Expression property to validate against.

Parameters:

pattern - a regular expression pattern

getPattern

public String getPattern()

Return the ValueExpression that yields the regular expression pattern when evaluated.

Returns:

the pattern

validate

public void validate(FacesContext context,
                     UIComponent component,
                     Object value)

Validate a String against a regular expression pattern. The full regex pattern must be matched in order to pass the validation.

Specified by:

validate in interface Validator

Parameters:

context - FacesContext for the request we are processing

component - UIComponent we are checking for correctness

value - the value to validate

Throws:

NullPointerException - if context or component is null

ValidatorException - if validation fails

saveState

public Object saveState(FacesContext context)

Description copied from interface: StateHolder

Gets the state of the instance as a Serializable Object.

If the class that implements this interface has references to instances that implement StateHolder (such as a UIComponent with event handlers, validators, etc.) this method must call the StateHolder.saveState(javax.faces.context.FacesContext) method on all those instances as well. This method must not save the state of children and facets. That is done via the StateManager

This method must not alter the state of the implementing object. In other words, after executing this code:

 Object state = component.saveState(facesContext);
 

component should be the same as before executing it.

The return from this method must be Serializable

Specified by:

saveState in interface StateHolder

Parameters:

context - the Faces context.

Returns:

the saved state.

restoreState

public void restoreState(FacesContext context,
                         Object state)

Description copied from interface: StateHolder

Perform any processing required to restore the state from the entries in the state Object.

If the class that implements this interface has references to instances that also implement StateHolder (such as a UIComponent with event handlers, validators, etc.) this method must call the StateHolder.restoreState(javax.faces.context.FacesContext, java.lang.Object) method on all those instances as well.

If the state argument is null, take no action and return.

Specified by:

restoreState in interface StateHolder

Parameters:

context - the Faces context.

state - the state.

isTransient

public boolean isTransient()

Description copied from interface: StateHolder

If true, the Object implementing this interface must not participate in state saving or restoring.

Specified by:

isTransient in interface StateHolder

Returns:

true if transient, false otherwise.

setTransient

public void setTransient(boolean transientValue)

Description copied from interface: StateHolder

Denotes whether or not the Object implementing this interface must or must not participate in state saving or restoring.

Specified by:

setTransient in interface StateHolder

Parameters:

transientValue - boolean pass true if this Object will not participate in state saving or restoring, otherwise pass false.

markInitialState

public void markInitialState()

Description copied from interface: PartialStateHolder

The runtime must ensure that the PartialStateHolder.markInitialState() method is called on each instance of this interface in the view at the appropriate time to indicate the component is in its initial state. The implementor of the interface must ensure that PartialStateHolder.initialStateMarked() returns true from the time markInitialState() is called until PartialStateHolder.clearInitialState() is called, after which time initialStateMarked() must return false. Also, during the time that the instance returns true from initialStateMarked(), the implementation must return only the state that has changed in its implementation of StateHolder.saveState(javax.faces.context.FacesContext).

Specified by:

markInitialState in interface PartialStateHolder

initialStateMarked

public boolean initialStateMarked()

Description copied from interface: PartialStateHolder

Return true if delta state changes are being tracked, otherwise false

Specified by:

initialStateMarked in interface PartialStateHolder

Returns:

true if the initial state is marked, false otherwise.

clearInitialState

public void clearInitialState()

Description copied from interface: PartialStateHolder

Reset the PartialStateHolder to a non-delta tracking state.

Specified by:

clearInitialState in interface PartialStateHolder