Package io.vertx.core.cli.converters
Class ConstructorBasedConverter<T>
- java.lang.Object
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- io.vertx.core.cli.converters.ConstructorBasedConverter<T>
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- All Implemented Interfaces:
Converter<T>
public final class ConstructorBasedConverter<T> extends Object implements Converter<T>
This 'default' converter tries to create objects using a constructor taking a single String argument. Be aware that implementation must also handle the case where the input is null.- Author:
- Clement Escoffier
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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 constructor approach.static <T> ConstructorBasedConverter<T>getIfEligible(Class<T> clazz)Checks whether the given class can be used by theConstructorBasedConverter(i.e. has a constructor taking a single String as argument).
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Method Detail
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getIfEligible
public static <T> ConstructorBasedConverter<T> getIfEligible(Class<T> clazz)
Checks whether the given class can be used by theConstructorBasedConverter(i.e. has a constructor taking a single String as argument). If so, creates a new instance of converter for this type.- Parameters:
clazz- the class- Returns:
- a
ConstructorBasedConverterif 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 constructor approach. Notice that the constructor must expect receiving 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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