public class DateTimeConverter extends Object implements Converter, StateHolder
Converter
implementation for java.util.Date
values.
The getAsObject()
method parses a String into a
java.util.Date
, according to the following algorithm:
null
. Otherwise, trim leading and trailing
whitespace before proceeding.null
.locale
property is not null,
use that Locale
for managing parsing. Otherwise, use the
Locale
from the UIViewRoot
.pattern
has been specified, its syntax must conform
the rules specified by java.text.SimpleDateFormat
. Such
a pattern will be used to parse, and the type
,
dateStyle
, and timeStyle
properties
will be ignored.pattern
has not been specified, parsing will be based
on the type
property, which expects a date value, a time
value, or both. Any date and time values included will be parsed in
accordance to the styles specified by dateStyle
and
timeStyle
, respectively.timezone
has been specified, it must be passed
to the underlying DateFormat
instance. Otherwise
the "GMT" timezone is used.The getAsString()
method expects a value of type
java.util.Date
(or a subclass), and creates a formatted
String according to the following algorithm:
locale
property is not null,
use that Locale
for managing formatting. Otherwise, use the
Locale
from the UIViewRoot
.timezone
has been specified, it must be passed
to the underlying DateFormat
instance. Otherwise
the "GMT" timezone is used.pattern
has been specified, its syntax must conform
the rules specified by java.text.SimpleDateFormat
. Such
a pattern will be used to format, and the type
,
dateStyle
, and timeStyle
properties
will be ignored.pattern
has not been specified, formatting will be
based on the type
property, which includes a date value,
a time value, or both into the formatted String. Any date and time
values included will be formatted in accordance to the styles specified
by dateStyle
and timeStyle
, respectively.Modifier and Type | Field and Description |
---|---|
static String |
CONVERTER_ID
The standard converter id for this converter.
|
static String |
DATE_ID
The message identifier of the
FacesMessage to be created if
the conversion to Date fails. |
static String |
DATETIME_ID
The message identifier of the
FacesMessage to be created if
the conversion to DateTime fails. |
static String |
STRING_ID
The message identifier of the
FacesMessage to be created if
the conversion of the DateTime value to
String fails. |
static String |
TIME_ID
The message identifier of the
FacesMessage to be created if
the conversion to Time fails. |
Constructor and Description |
---|
DateTimeConverter() |
Modifier and Type | Method and Description |
---|---|
Object |
getAsObject(FacesContext context,
UIComponent component,
String value)
Convert the specified string value, which is associated with
the specified
UIComponent , into a model data object that
is appropriate for being stored during the Apply Request
Values phase of the request processing lifecycle. |
String |
getAsString(FacesContext context,
UIComponent component,
Object value)
Convert the specified model object value, which is associated with
the specified
UIComponent , into a String that is suitable
for being included in the response generated during the
Render Response phase of the request processing
lifeycle. |
String |
getDateStyle()
Return the style to be used to format or parse dates.
|
Locale |
getLocale()
Return the
Locale to be used when parsing or formatting
dates and times. |
String |
getPattern()
Return the format pattern to be used when formatting and
parsing dates and times.
|
String |
getTimeStyle()
Return the style to be used to format or parse times.
|
TimeZone |
getTimeZone()
Return the
TimeZone used to interpret a time value. |
String |
getType()
Return the type of value to be formatted or parsed.
|
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 |
setDateStyle(String dateStyle)
Set the style to be used to format or parse dates.
|
void |
setLocale(Locale locale)
Set the
Locale to be used when parsing or formatting
dates and times. |
void |
setPattern(String pattern)
Set the format pattern to be used when formatting and parsing
dates and times.
|
void |
setTimeStyle(String timeStyle)
Set the style to be used to format or parse times.
|
void |
setTimeZone(TimeZone timeZone)
Set the
TimeZone used to interpret a time value. |
void |
setTransient(boolean transientFlag)
Denotes whether or not the Object implementing this interface must
or must not participate in state saving or restoring.
|
void |
setType(String type)
Set the type of value to be formatted or parsed.
|
public static final String CONVERTER_ID
The standard converter id for this converter.
public static final String DATE_ID
The message identifier of the FacesMessage
to be created if
the conversion to Date
fails. The message format
string for this message may optionally include the following
placeholders:
{0}
replaced by the unconverted value.{1}
replaced by an example value.{2}
replaced by a String
whose value
is the label of the input component that produced this message.public static final String TIME_ID
The message identifier of the FacesMessage
to be created if
the conversion to Time
fails. The message format
string for this message may optionally include the following
placeholders:
{0}
replaced by the unconverted value.{1}
replaced by an example value.{2}
replaced by a String
whose value
is the label of the input component that produced this message.public static final String DATETIME_ID
The message identifier of the FacesMessage
to be created if
the conversion to DateTime
fails. The message format
string for this message may optionally include the following
placeholders:
{0}
replaced by the unconverted value.{1}
replaced by an example value.{2}
replaced by a String
whose value
is the label of the input component that produced this message.public static final String STRING_ID
The message identifier of the FacesMessage
to be created if
the conversion of the DateTime
value to
String
fails. The message format string for this message
may optionally include the following placeholders:
{0}
relaced by the unconverted value.{1}
replaced by a String
whose value
is the label of the input component that produced this message.public String getDateStyle()
Return the style to be used to format or parse dates. If not set,
the default value, default
, is returned.
public void setDateStyle(String dateStyle)
Set the style to be used to format or parse dates. Valid values
are default
, short
, medium
,
long
, and full
.
An invalid value will cause a ConverterException
when
getAsObject()
or getAsString()
is called.
dateStyle
- The new style codepublic Locale getLocale()
Return the Locale
to be used when parsing or formatting
dates and times. If not explicitly set, the Locale
stored
in the UIViewRoot
for the current
request is returned.
public void setLocale(Locale locale)
Set the Locale
to be used when parsing or formatting
dates and times. If set to null
, the Locale
stored in the UIViewRoot
for the current
request will be utilized.
locale
- The new Locale
(or null
)public String getPattern()
Return the format pattern to be used when formatting and parsing dates and times.
public void setPattern(String pattern)
Set the format pattern to be used when formatting and parsing
dates and times. Valid values are those supported by
java.text.SimpleDateFormat
.
An invalid value will cause a ConverterException
when
getAsObject()
or getAsString()
is called.
pattern
- The new format patternpublic String getTimeStyle()
Return the style to be used to format or parse times. If not set,
the default value, default
, is returned.
public void setTimeStyle(String timeStyle)
Set the style to be used to format or parse times. Valid values
are default
, short
, medium
,
long
, and full
.
An invalid value will cause a ConverterException
when
getAsObject()
or getAsString()
is called.
timeStyle
- The new style codepublic TimeZone getTimeZone()
Return the TimeZone
used to interpret a time value.
If not explicitly set, the default time zone of GMT
returned.
public void setTimeZone(TimeZone timeZone)
Set the TimeZone
used to interpret a time value.
timeZone
- The new time zonepublic String getType()
Return the type of value to be formatted or parsed.
If not explicitly set, the default type, date
is returned.
public void setType(String type)
Set the type of value to be formatted or parsed.
Valid values are both
, date
, or
time
.
An invalid value will cause a ConverterException
when
getAsObject()
or getAsString()
is called.
type
- The new date stylepublic Object getAsObject(FacesContext context, UIComponent component, String value)
Converter
Convert the specified string value, which is associated with
the specified UIComponent
, into a model data object that
is appropriate for being stored during the Apply Request
Values phase of the request processing lifecycle.
getAsObject
in interface Converter
context
- FacesContext
for the request being processedcomponent
- UIComponent
with which this model object
value is associatedvalue
- String value to be converted (may be null
)null
if the value to convert is null
,
otherwise the result of the conversionConverterException
- if conversion cannot be successfully
performedNullPointerException
- if context
or
component
is null
public String getAsString(FacesContext context, UIComponent component, Object value)
Converter
Convert the specified model object value, which is associated with
the specified UIComponent
, into a String that is suitable
for being included in the response generated during the
Render Response phase of the request processing
lifeycle.
getAsString
in interface Converter
context
- FacesContext
for the request being processedcomponent
- UIComponent
with which this model object
value is associatedvalue
- Model object value to be converted
(may be null
)null
,
otherwise the result of the conversionConverterException
- if conversion cannot be successfully
performedNullPointerException
- if context
or
component
is null
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 transientFlag)
StateHolder
Denotes whether or not the Object implementing this interface must or must not participate in state saving or restoring.
setTransient
in interface StateHolder
transientFlag
- boolean pass true
if this Object
will participate in state saving or restoring, otherwise
pass false
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