External messages bundle with hot-deploy

Support
#1

Can I use a message bundle in a file outside the resource path? I mean an external message bundle that can be modified without rebuilding the jar and could be loaded during startup or hot-deploy ?

#2

Yes you can load message property files from any location.

Create an implementation of the io.jmix.core.Resources interface:

package com.company.demo;

import io.jmix.core.Resources;
import org.springframework.core.io.Resource;

import javax.annotation.Nullable;
import java.io.InputStream;

public class MyResources implements Resources {

    private final Resources delegate;

    public MyResources(Resources delegate) {
        this.delegate = delegate;
    }

    @Nullable
    @Override
    public InputStream getResourceAsStream(String location) {
        return delegate.getResourceAsStream(location);
    }

    @Nullable
    @Override
    public String getResourceAsString(String location) {
        return delegate.getResourceAsString(location);
    }

    @Override
    public Resource getResource(String location) {
        // this method is used to load messages.properties files
        return delegate.getResource(location);
    }

    @Override
    public ClassLoader getClassLoader() {
        return delegate.getClassLoader();
    }
}

Define the MessageSource bean accepting MyResources instead of the standard implementation:

@SpringBootApplication
public class DemoApplication {
    // ...

    @Bean
    MessageSource messageSource(JmixModules modules, Resources resources) {
        return new JmixMessageSource(modules, new MyResources(resources));
    }
}
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