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javax.faces.convert Class DoubleConverter
java.lang.Object javax.faces.convert.DoubleConverter
- All Implemented Interfaces:
- Converter
java.lang.Double
(以及 double 基本类型)值的 Converter
实现。
Converter
implementation for java.lang.Double
(and double primitive) values.
Field Summary | |
---|---|
static String |
CONVERTER_ID
The standard converter id for this converter. |
static String |
DOUBLE_ID
The message identifier of the FacesMessage to be created if
the conversion to Double fails. |
static String |
STRING_ID
The message identifier of the FacesMessage to be created if
the conversion of the Double value to
String fails. |
Constructor Summary | |
---|---|
DoubleConverter()
|
Method Summary | |
---|---|
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. |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
---|
英文文档:
CONVERTER_ID
public static final String CONVERTER_ID
The standard converter id for this converter.
- See Also:
- Constant Field Values
英文文档:
DOUBLE_ID
public static final String DOUBLE_ID
The message identifier of the
FacesMessage
to be created if the conversion toDouble
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 aString
whose value is the label of the input component that produced this message.
- See Also:
- Constant Field Values
英文文档:
STRING_ID
public static final String STRING_ID
The message identifier of the
FacesMessage
to be created if the conversion of theDouble
value toString
fails. The message format string for this message may optionally include the following placeholders:{0}
relaced by the unconverted value.{1}
replaced by aString
whose value is the label of the input component that produced this message.
- See Also:
- Constant Field Values
Constructor Detail |
---|
public
DoubleConverter()
英文文档:
DoubleConverter
public DoubleConverter()
Method Detail |
---|
public Object
getAsObject(FacesContext context, UIComponent component, String value)
Throws | ConverterException: NullPointerException 如果无法成功执行转换 |
Throws | NullPointerException:
NullPointerException
如果 context 或 component 为 null |
getAsObject
public Object getAsObject(FacesContext context, UIComponent component, String value)
- Description copied from interface:
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.- Specified by:
getAsObject
in interfaceConverter
- Parameters:
context
-FacesContext
for the request being processedcomponent
-UIComponent
with which this model object value is associatedvalue
- String value to be converted (may benull
)- Returns:
null
if the value to convert isnull
, otherwise the result of the conversion- Throws:
ConverterException
- if conversion cannot be successfully performedNullPointerException
- ifcontext
orcomponent
isnull
public String
getAsString(FacesContext context, UIComponent component, Object value)
Throws | ConverterException: NullPointerException 如果无法成功执行转换 |
Throws | NullPointerException:
NullPointerException
如果 context 或 component 为 null |
getAsString
public String getAsString(FacesContext context, UIComponent component, Object value)
- Description copied from interface:
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.- Specified by:
getAsString
in interfaceConverter
- Parameters:
context
-FacesContext
for the request being processedcomponent
-UIComponent
with which this model object value is associatedvalue
- Model object value to be converted (may benull
)- Returns:
- a zero-length String if value is
null
, otherwise the result of the conversion - Throws:
ConverterException
- if conversion cannot be successfully performedNullPointerException
- ifcontext
orcomponent
isnull
|
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Copyright 2007 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.
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