org.jnosql.artemis.cassandra.column.CassandraRepositoryBean Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of cassandra-extension Show documentation
Eclipse JNoSQL mapping layer, Artemis, to Cassandra
There is a newer version: 0.0.9
/*
 *  Copyright (c) 2017 Otávio Santana and others
 *   All rights reserved. This program and the accompanying materials
 *   are made available under the terms of the Eclipse Public License v1.0
 *   and Apache License v2.0 which accompanies this distribution.
 *   The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 *   and the Apache License v2.0 is available at http://www.opensource.org/licenses/apache2.0.php.
 *
 *   You may elect to redistribute this code under either of these licenses.
 *
 *   Contributors:
 *
 *   Otavio Santana
 */
package org.jnosql.artemis.cassandra.column;

import org.jnosql.artemis.Repository;
import org.jnosql.artemis.column.ColumnRepositoryProducer;

import javax.enterprise.context.ApplicationScoped;
import javax.enterprise.context.spi.CreationalContext;
import javax.enterprise.inject.Default;
import javax.enterprise.inject.spi.Bean;
import javax.enterprise.inject.spi.BeanManager;
import javax.enterprise.inject.spi.InjectionPoint;
import javax.enterprise.inject.spi.PassivationCapable;
import javax.enterprise.util.AnnotationLiteral;
import java.lang.annotation.Annotation;
import java.lang.reflect.Proxy;
import java.lang.reflect.Type;
import java.util.Collections;
import java.util.Set;


class CassandraRepositoryBean implements Bean, PassivationCapable {

    private final Class type;

    private final BeanManager beanManager;

    private final Set types;

    private final Set qualifiers = Collections.singleton(new AnnotationLiteral() {
    });

    CassandraRepositoryBean(Class type, BeanManager beanManager) {
        this.type = type;
        this.beanManager = beanManager;
        this.types = Collections.singleton(type);
    }

    @Override
    public Class getBeanClass() {
        return type;
    }

    @Override
    public Set getInjectionPoints() {
        return Collections.emptySet();
    }

    @Override
    public boolean isNullable() {
        return false;
    }

    @Override
    public CassandraRepository create(CreationalContext creationalContext) {
        CassandraTemplate template = getInstance(CassandraTemplate.class);
        ColumnRepositoryProducer producer = getInstance(ColumnRepositoryProducer.class);
        Repository repository = producer.get((Class>) type, template);
        CassandraRepositoryProxy handler = new CassandraRepositoryProxy(template, type, repository);
        return (CassandraRepository) Proxy.newProxyInstance(type.getClassLoader(),
                new Class[]{type},
                handler);
    }


    private  T getInstance(Class clazz) {
        Bean bean = (Bean) beanManager.getBeans(clazz).iterator().next();
        CreationalContext ctx = beanManager.createCreationalContext(bean);
        return (T) beanManager.getReference(bean, clazz, ctx);
    }

    @Override
    public void destroy(CassandraRepository instance, CreationalContext creationalContext) {

    }

    @Override
    public Set getTypes() {
        return types;
    }

    @Override
    public Set getQualifiers() {
        return qualifiers;
    }

    @Override
    public Class getScope() {
        return ApplicationScoped.class;
    }

    @Override
    public String getName() {
        return null;
    }

    @Override
    public Set> getStereotypes() {
        return Collections.emptySet();
    }

    @Override
    public boolean isAlternative() {
        return false;
    }

    @Override
    public String getId() {
        return type.getName() + "@cassandra";
    }

}