Package io.vertx.core.cli.converters
Class FromStringBasedConverter<T>
- java.lang.Object
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- io.vertx.core.cli.converters.FromStringBasedConverter<T>
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- All Implemented Interfaces:
Converter<T>
public final class FromStringBasedConverter<T> extends Object implements Converter<T>
This 'default' converter tries to create objects using a static 'from' method taking a single String argument. This converter is particularly convenient for converters themselves.- Author:
- Clement Escoffier
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Field Summary
Fields Modifier and Type Field Description static StringFROM_STRING
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description TfromString(String input)Converts the given input to an object by using the 'fromString' method.static <T> FromStringBasedConverter<T>getIfEligible(Class<T> clazz)Checks whether the given class can be used by theFromStringBasedConverter(i.e. has a static 'fromString' method taking a single String as argument).
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Field Detail
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FROM_STRING
public static final String FROM_STRING
- See Also:
- Constant Field Values
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Method Detail
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getIfEligible
public static <T> FromStringBasedConverter<T> getIfEligible(Class<T> clazz)
Checks whether the given class can be used by theFromStringBasedConverter(i.e. has a static 'fromString' method taking a single String as argument). If so, creates a new instance of converter for this type.- Parameters:
clazz- the class- Returns:
- a
FromStringBasedConverterif the given class is eligible, null otherwise.
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fromString
public T fromString(String input) throws IllegalArgumentException
Converts the given input to an object by using the 'fromString' method. Notice that the method may receive a null value.- Specified by:
fromStringin interfaceConverter<T>- Parameters:
input- the input, can be null- Returns:
- the instance of T
- Throws:
IllegalArgumentException- if the instance of T cannot be created from the input.
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