nl.open.jwtdependency.com.fasterxml.jackson.databind.util.StdConverter Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of java-jwt-nodependencies Show documentation

This is a drop in replacement for the auth0 java-jwt library (see https://github.com/auth0/java-jwt). This jar makes sure there are no external dependencies (e.g. fasterXml, Apacha Commons) needed. This is useful when deploying to an application server (e.g. tomcat with Alfreso or Pega).

The newest version!

package com.fasterxml.jackson.databind.util;

import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.type.TypeFactory;

/**
 * Standard implementation of {@link Converter} that supports explicit
 * type access, instead of relying type detection of generic type
 * parameters. 
 * 
 * @since 2.2
 */
public abstract class StdConverter
    implements Converter
{
    /*
    /**********************************************************
    /* Partial Converter API implementation
    /**********************************************************
     */

    @Override
    public abstract OUT convert(IN value);

    @Override
    public JavaType getInputType(TypeFactory typeFactory) {
        return _findConverterType(typeFactory).containedType(0);
    }

    @Override
    public JavaType getOutputType(TypeFactory typeFactory) {
        return _findConverterType(typeFactory).containedType(1);
    }

    protected JavaType _findConverterType(TypeFactory tf) {
        JavaType thisType = tf.constructType(getClass());
        JavaType convType = thisType.findSuperType(Converter.class);
        if (convType == null || convType.containedTypeCount() < 2) {
            throw new IllegalStateException("Can not find OUT type parameter for Converter of type "+getClass().getName());
        }
        return convType;
    }
}