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java.lang.Object javax.faces.validator.LengthValidator
public class LengthValidator
LengthValidator is a Validator
that checks
the number of characters in the String representation of the value of the
associated component. The following algorithm is implemented:
toString()
method.maximum
property has been configured on this
Validator
, check the length of the converted
String against this limit. If the String length is larger than the
specified maximum, throw a ValidatorException
containing a
a MAXIMUM_MESSAGE_ID message.minimum
property has been configured on this
Validator
, check the length of the converted
String against this limit. If the String length is less than the
specified minimum, throw a ValidatorException
containing a
a MINIMUM_MESSAGE_ID message.For all of the above cases that cause a ValidatorException
to be thrown, if there are parameters to the message that match up
with validator parameters, the values of these parameters must be
converted using the Converter
registered in the application
under the converter id javax.faces.Number
. This allows
the values to be localized according to the current
Locale
.
Field Summary | |
---|---|
static String |
MAXIMUM_MESSAGE_ID
The message identifier of the FacesMessage to be created if
the maximum length check fails. |
static String |
MINIMUM_MESSAGE_ID
The message identifier of the FacesMessage to be created if
the minimum length check fails. |
static String |
VALIDATOR_ID
The standard validator id for this validator. |
Fields inherited from interface javax.faces.validator.Validator |
---|
NOT_IN_RANGE_MESSAGE_ID |
Constructor Summary | |
---|---|
LengthValidator()
Construct a Validator with no preconfigured limits. |
|
LengthValidator(int maximum)
Construct a Validator with the specified preconfigured
limit. |
|
LengthValidator(int maximum,
int minimum)
Construct a Validator with the specified preconfigured
limits. |
Method Summary | |
---|---|
boolean |
equals(Object otherObj)
|
int |
getMaximum()
Return the maximum length to be enforced by this Validator , or 0 if the maximum has not been
set. |
int |
getMinimum()
Return the minimum length to be enforced by this Validator , or 0 if the minimum has not been
set. |
int |
hashCode()
|
boolean |
isTransient()
If true, the Object implementing this interface must not participate in state saving or restoring. |
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 |
setMaximum(int maximum)
Set the maximum length to be enforced by this Validator . |
void |
setMinimum(int minimum)
Set the minimum length to be enforced by this Validator . |
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)
Perform the correctness checks implemented by this Validator against the specified UIComponent . |
Methods inherited from class java.lang.Object |
---|
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
---|
public static final String VALIDATOR_ID
The standard validator id for this validator.
public static final String MAXIMUM_MESSAGE_ID
The message identifier of the FacesMessage
to be created if
the maximum length check fails. The message format string for
this message may optionally include the following placeholders:
{0}
replaced by the configured maximum length.{1}
replaced by a String
whose value
is the label of the input component that produced this message.
public static final String MINIMUM_MESSAGE_ID
The message identifier of the FacesMessage
to be created if
the minimum length check fails. The message format string for
this message may optionally include the following placeholders:
{0}
replaced by the configured minimum length.{1}
replaced by a String
whose value
is the label of the input component that produced this message.
Constructor Detail |
---|
public LengthValidator()
Construct a Validator
with no preconfigured limits.
public LengthValidator(int maximum)
Construct a Validator
with the specified preconfigured
limit.
maximum
- Maximum value to allowpublic LengthValidator(int maximum, int minimum)
Construct a Validator
with the specified preconfigured
limits.
maximum
- Maximum value to allowminimum
- Minimum value to allowMethod Detail |
---|
public int getMaximum()
Return the maximum length to be enforced by this Validator
, or 0
if the maximum has not been
set.
public void setMaximum(int maximum)
Set the maximum length to be enforced by this Validator
.
maximum
- The new maximum valuepublic int getMinimum()
Return the minimum length to be enforced by this Validator
, or 0
if the minimum has not been
set.
public void setMinimum(int minimum)
Set the minimum length to be enforced by this Validator
.
minimum
- The new minimum valuepublic void validate(FacesContext context, UIComponent component, Object value) throws ValidatorException
Validator
Perform the correctness checks implemented by this
Validator
against the specified UIComponent
.
If any violations are found, a ValidatorException
will be thrown containing the FacesMessage
describing
the failure.
validate
in interface Validator
context
- FacesContext for the request we are processingcomponent
- UIComponent we are checking for correctnessvalue
- the value to validate
NullPointerException
- if context
or component
is null
ValidatorException
- if validation failspublic boolean equals(Object otherObj)
equals
in class Object
public int hashCode()
hashCode
in class Object
public Object saveState(FacesContext context)
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
saveState
in interface StateHolder
public void restoreState(FacesContext context, Object state)
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.
restoreState
in interface StateHolder
public boolean isTransient()
StateHolder
If true, the Object implementing this interface must not participate in state saving or restoring.
isTransient
in interface StateHolder
public void setTransient(boolean transientValue)
StateHolder
Denotes whether or not the Object implementing this interface must or must not participate in state saving or restoring.
setTransient
in interface StateHolder
transientValue
- boolean pass true
if this Object
will participate in state saving or restoring, otherwise
pass false
.
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Copyright 2007 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.