org.jnosql.artemis.column.ColumnFamilyManagerFactoryProducer Maven / Gradle / Ivy

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Eclipse JNoSQL Mapping, Artemis API, to column NoSQL databases
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/*
 *  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.column;

import org.jnosql.artemis.ConfigurationReader;
import org.jnosql.artemis.ConfigurationSettingsUnit;
import org.jnosql.artemis.ConfigurationUnit;
import org.jnosql.artemis.reflection.Reflections;
import org.jnosql.diana.api.column.ColumnConfiguration;
import org.jnosql.diana.api.column.ColumnConfigurationAsync;
import org.jnosql.diana.api.column.ColumnFamilyManager;
import org.jnosql.diana.api.column.ColumnFamilyManagerAsync;
import org.jnosql.diana.api.column.ColumnFamilyManagerAsyncFactory;
import org.jnosql.diana.api.column.ColumnFamilyManagerFactory;

import javax.enterprise.context.ApplicationScoped;
import javax.enterprise.inject.Instance;
import javax.enterprise.inject.Produces;
import javax.enterprise.inject.spi.Annotated;
import javax.enterprise.inject.spi.InjectionPoint;
import javax.inject.Inject;
import java.util.Optional;

import static java.util.Optional.ofNullable;

/**
 * The class that creates {@link ColumnFamilyManagerFactory} and {@link ColumnFamilyManagerAsyncFactory}
 * from the {@link ConfigurationUnit}
 */
@ApplicationScoped
class ColumnFamilyManagerFactoryProducer {

    @Inject
    private Reflections reflections;

    @Inject
    private Instance configurationReader;


    @ConfigurationUnit
    @Produces
    public  ColumnFamilyManagerFactory getColumnConfigurationGenerics(InjectionPoint injectionPoint) {
        return gettColumnFamilyManagerFactory(injectionPoint);
    }

    @ConfigurationUnit
    @Produces
    public ColumnFamilyManagerFactory getColumnConfiguration(InjectionPoint injectionPoint) {
        return gettColumnFamilyManagerFactory(injectionPoint);
    }


    @ConfigurationUnit
    @Produces
    public  ColumnFamilyManagerAsyncFactory getColumnConfigurationAsyncGeneric(InjectionPoint injectionPoint) {
        return gettColumnFamilyManagerAsyncFactory(injectionPoint);
    }


    @ConfigurationUnit
    @Produces
    public ColumnFamilyManagerAsyncFactory getColumnConfigurationAsync(InjectionPoint injectionPoint) {
        return gettColumnFamilyManagerAsyncFactory(injectionPoint);
    }


    private  ColumnFamilyManagerAsyncFactory gettColumnFamilyManagerAsyncFactory(InjectionPoint injectionPoint) {
        Annotated annotated = injectionPoint.getAnnotated();

        ConfigurationUnit annotation = getConfigurationUnit(injectionPoint, annotated)
                .orElseThrow(() -> new IllegalStateException("The @ConfigurationUnit does not found"));

        ConfigurationSettingsUnit unit = configurationReader.get().read(annotation, ColumnConfigurationAsync.class);
        Class configurationClass = unit.getProvider()
                .orElseThrow(() -> new IllegalStateException("The ColumnConfiguration provider is required in the configuration"));

        ColumnConfigurationAsync columnConfiguration = reflections.newInstance(configurationClass);

        return columnConfiguration.getAsync(unit.getSettings());
    }

    private  ColumnFamilyManagerFactory gettColumnFamilyManagerFactory(InjectionPoint injectionPoint) {
        Annotated annotated = injectionPoint.getAnnotated();

        ConfigurationUnit annotation = getConfigurationUnit(injectionPoint, annotated)
                .orElseThrow(() -> new IllegalStateException("The @ConfigurationUnit does not found"));

        ConfigurationSettingsUnit unit = configurationReader.get().read(annotation, ColumnConfiguration.class);
        Class configurationClass = unit.getProvider()
                .orElseThrow(() -> new IllegalStateException("The ColumnConfiguration provider is required in the configuration"));

        ColumnConfiguration columnConfiguration = reflections.newInstance(configurationClass);

        return columnConfiguration.get(unit.getSettings());
    }

    private Optional getConfigurationUnit(InjectionPoint injectionPoint, Annotated annotated) {

        if (annotated == null) {
            return injectionPoint.getQualifiers().stream()
                    .filter(annotation -> ConfigurationUnit.class.equals(annotation.annotationType()))
                    .map(ConfigurationUnit.class::cast)
                    .findFirst();
        }
        return ofNullable(annotated.getAnnotation(ConfigurationUnit.class));
    }
}