DataSourceDelegateBean.java

/*
 * Copyright 2016 Hammock and its contributors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
 * implied.
 *
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package ws.ament.hammock.jpa;

import javax.enterprise.context.ApplicationScoped;
import javax.enterprise.context.spi.CreationalContext;
import javax.enterprise.inject.spi.Bean;
import javax.enterprise.inject.spi.InjectionPoint;
import javax.sql.DataSource;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.Set;
import java.util.function.Supplier;

import static java.util.Collections.emptySet;
import static java.util.Collections.singleton;
import static ws.ament.hammock.jpa.Database.DatabaseLiteral.database;

public class DataSourceDelegateBean implements Bean<DataSource> {
    private final Supplier<HammockDataSource> dataSourceSupplier;
    private String name;

    DataSourceDelegateBean(String name, Supplier<HammockDataSource> supplier) {
        this.name = name;
        this.dataSourceSupplier = supplier;
    }

    @Override
    public Class<?> getBeanClass() {
        return DataSource.class;
    }

    @Override
    public Set<InjectionPoint> getInjectionPoints() {
        return emptySet();
    }

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

    @Override
    public DataSource create(CreationalContext<DataSource> creationalContext) {
        return dataSourceSupplier.get();
    }

    @Override
    public void destroy(DataSource dataSource, CreationalContext<DataSource> creationalContext) {

    }

    @Override
    public Set<Type> getTypes() {
        return singleton(DataSource.class);
    }

    @Override
    public Set<Annotation> getQualifiers() {
        return singleton(database(getName()));
    }

    @Override
    public Class<? extends Annotation> getScope() {
        return ApplicationScoped.class;
    }

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

    @Override
    public Set<Class<? extends Annotation>> getStereotypes() {
        return emptySet();
    }

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

}