Package org.apache.johnzon.mapper
Interface Adapter<POJO_TYPE,JSON_TYPE>
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- Type Parameters:
POJO_TYPE
- The Java type in the POJO (Plain Old Java Object)JSON_TYPE
- The Java Type which will be used to transform to JSON.
- All Superinterfaces:
MapperConverter
- All Known Subinterfaces:
TypeAwareAdapter<A,B>
- All Known Implementing Classes:
ConverterAdapter
,DateWithCopyConverter
,LocaleConverter
,ReversedAdapter
,TimestampAdapter
public interface Adapter<POJO_TYPE,JSON_TYPE> extends MapperConverter
An Adapter is similar to aConverter
. The main difference is that a Converter always converts from/to a String. An adapter might e.g. convert to a Date or any other Object which will then be json-ified.A small example which has a special Java type to internally represent dates. Let's call it
DateHolder
. OurMapper
should treat it as ajava.util.Date
. For doing so we create aDateHolderAdapter
like the following example shows:public static class DateHolderAdapter implements Adapter
{
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description JSON_TYPE
from(POJO_TYPE a)
Take the POJO_TYPE object A from a POJO an convert it to JSON_TYPE which will be inserted into the JSON output.POJO_TYPE
to(JSON_TYPE b)
Transfer JSONTYPE_TYPE from JSON to POJO as POJO_TYPE.
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