public class NullConverter extends AbstractConverter<Object,Object>
Converter implementation for handling null values. Performs
basic casting when given a null source and returns
By running at Priority.FIRST_PRIORITY, other converters should
not need to worry about null source or destination parameters.
NB: if a Class source is queried for the canConvert(org.scijava.convert.ConversionRequest),
this converter will always return false (as there is no way of knowing
if the source object will be null or not).
| Constructor and Description |
|---|
NullConverter() |
| Modifier and Type | Method and Description |
|---|---|
boolean |
canConvert(Class<?> src,
Class<?> dest)
Checks whether objects of the given class can be converted to the specified
type.
|
boolean |
canConvert(ConversionRequest request)
Checks whether a given can be
processed, by converting the desired
ConversionRequest.sourceClass() to its
ConversionRequest.destClass() or
ConversionRequest.destType(). |
boolean |
canConvert(Object src,
Class<?> dest)
Checks whether the given object's type can be converted to the specified
type.
|
boolean |
canConvert(Object src,
Type dest)
Checks whether the given object's type can be converted to the specified
type.
|
<T> T |
convert(Object src,
Class<T> dest)
Converts the given object to an object of the specified type.
|
Class<Object> |
getInputType() |
Class<Object> |
getOutputType() |
canConvert, convert, convert, getType, populateInputCandidates, supportscompareTo, getInfo, getPriority, setInfo, setPriority, toStringcontext, getContext, setContextclone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, waitcontext, getContext, setContextgetPriority, setPrioritycompareTogetInfo, setInfopublic boolean canConvert(ConversionRequest request)
ConverterConversionRequest.sourceClass() to its
ConversionRequest.destClass() or
ConversionRequest.destType().canConvert in interface Converter<Object,Object>canConvert in class AbstractConverter<Object,Object>Converter.convert(ConversionRequest)public boolean canConvert(Object src, Type dest)
Converter
Note that this does not necessarily entail that
Converter.convert(Object, Type) on that specific object will succeed. For
example: canConvert("5.1", int.class) will return true
because a String can in general be converted to an int, but
calling convert("5.1", int.class) will throw a
NumberFormatException when the conversion is actually attempted via
the Integer.Integer(String) constructor.
canConvert in interface Converter<Object,Object>canConvert in class AbstractConverter<Object,Object>Converter.convert(Object, Type)public boolean canConvert(Object src, Class<?> dest)
Converter
Note that this does not necessarily entail that
Converter.convert(Object, Class) on that specific object will succeed. For
example: canConvert("5.1", int.class) will return true
because a String can in general be converted to an int, but
calling convert("5.1", int.class) will throw a
NumberFormatException when the conversion is actually attempted via
the Integer.Integer(String) constructor.
canConvert in interface Converter<Object,Object>canConvert in class AbstractConverter<Object,Object>Converter.convert(Object, Class)public boolean canConvert(Class<?> src, Class<?> dest)
ConvertercanConvert in interface Converter<Object,Object>canConvert in class AbstractConverter<Object,Object>Converter.convert(Object, Class)public <T> T convert(Object src, Class<T> dest)
ConverterString, which uses the
Object.toString() method instead). In the case of primitive types,
returns an object of the corresponding wrapped type. If the destination
type does not have an appropriate constructor, returns null.T - Type to which the object should be converted.src - The object to convert.dest - Type to which the object should be converted.public Class<Object> getOutputType()
Class this Converter produces as output.Copyright © 2009–2015 SciJava. All rights reserved.