com.flowlogix.jeedao.DaoHelperProducer Maven / Gradle / Ivy
/*
* Copyright (C) 2011-2024 Flow Logix, Inc. All Rights Reserved.
*
* 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 com.flowlogix.jeedao;
import jakarta.enterprise.context.Dependent;
import jakarta.enterprise.inject.Any;
import jakarta.enterprise.inject.Produces;
import jakarta.enterprise.inject.spi.InjectionPoint;
import java.lang.annotation.Annotation;
import java.lang.reflect.ParameterizedType;
import java.util.Arrays;
import java.util.List;
import com.flowlogix.api.dao.JPAFinder;
import lombok.NoArgsConstructor;
import static com.flowlogix.jeedao.DaoHelper.findEntityManager;
/**
* Enables CDI Injection of {@link JPAFinder} instances
*/
@Dependent
@SuppressWarnings("HideUtilityClassConstructor")
@NoArgsConstructor
class DaoHelperProducer {
@Produces
public static DaoHelper
produceDaoHelper(InjectionPoint injectionPoint) {
return doProduceDaoHelper(injectionPoint, List.of());
}
@Produces
@EntityManagerSelector(Any.class)
public static DaoHelper
produceDaoHelperEntityManagerSelector(InjectionPoint injectionPoint) {
var selector = injectionPoint.getQualifiers().stream()
.filter(c -> c.annotationType().isAssignableFrom(EntityManagerSelector.class))
.map(EntityManagerSelector.class::cast).findFirst().get();
return doProduceDaoHelper(injectionPoint, Arrays.asList(selector.value()));
}
private static DaoHelper
doProduceDaoHelper(InjectionPoint injectionPoint, List> qualifiers) {
var entityManagerSupplier = findEntityManager(qualifiers);
var parameterizedType = (ParameterizedType) injectionPoint.getType();
@SuppressWarnings("unchecked")
var entityClass = (Class) parameterizedType.getActualTypeArguments()[0];
return new DaoHelper<>(entityManagerSupplier, entityClass);
}
}