com.javonet.core.handler.GetEnumItemHandler Maven / Gradle / Ivy

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Javonet allows you to reference and use modules or packages written in (Java/Kotlin/Groovy/Clojure, C#/VB.NET, Ruby, Perl, Python, JavaScript/TypeScript) like they were created in your technology. It works on Linux/Windows and MacOS for applications created in JVM, CLR/Netcore, Perl, Python, Ruby, NodeJS, C++ or GoLang and gives you unparalleled freedom and flexibility with native performance in building your mixed-technologies products. Let it be accessing best AI or cryptography libraries, devices SDKs, legacy client modules, internal custom packages or anything from public repositories available on NPM, Nuget, PyPI, Maven/Gradle, RubyGems or GitHub. Get free from programming languages barriers today! For more information check out our guides at https://www.javonet.com/guides/v2/

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package com.javonet.core.handler;

import com.javonet.utils.Command;
import com.javonet.utils.exceptions.JavonetArgumentsMismatchException;

public class GetEnumItemHandler extends AbstractHandler {
    private final int requiredArgumentsCount = 2;

    @Override
    public Object process(Command command) throws Exception {
        if (command.getPayload().length != requiredArgumentsCount)
            throw new JavonetArgumentsMismatchException(this.getClass().getName(), requiredArgumentsCount);

        if (command.getPayload()[0] instanceof Class && command.getPayload()[1] instanceof String) {
            Class enumClass = (Class) command.getPayload()[0];
            String enumName = (String) command.getPayload()[1];
            return enumClass.getDeclaredField(enumName).get(enumClass);
        }

        throw new IllegalArgumentException(String.format("Enum %s not found", command.getPayload()[0].toString()));
    }
}