org.apache.cayenne.configuration.osgi.OsgiModule Maven / Gradle / Ivy

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package org.apache.cayenne.configuration.osgi;

import java.util.HashMap;
import java.util.Map;

import org.apache.cayenne.access.DataDomain;
import org.apache.cayenne.di.Binder;
import org.apache.cayenne.di.ClassLoaderManager;
import org.apache.cayenne.di.Module;

/**
 * A DI module that helps to bootstrap Cayenne in OSGi environment.
 * 
 * @since 4.0
 */
public class OsgiModule implements Module {

    private Class typeFromProjectBundle;
    private Map perTypeClassLoaders;

    OsgiModule() {
        this.perTypeClassLoaders = new HashMap<>();
    }

    void setTypeFromProjectBundle(Class typeFromProjectBundle) {
        this.typeFromProjectBundle = typeFromProjectBundle;
    }

    void putClassLoader(String type, ClassLoader classLoader) {
        perTypeClassLoaders.put(type, classLoader);
    }

    @Override
    public void configure(Binder binder) {
        binder.bind(ClassLoaderManager.class).toInstance(createClassLoaderManager());
        binder.bind(DataDomain.class).toProvider(OsgiDataDomainProvider.class);
    }

    private ClassLoaderManager createClassLoaderManager() {
        return new OsgiClassLoaderManager(typeFromProjectBundle.getClassLoader(), perTypeClassLoaders);
    }
}