com.frank.search.solr.repository.cdi.SolrRepositoryExtension.java Source code

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Here is the source code for com.frank.search.solr.repository.cdi.SolrRepositoryExtension.java

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/*
 * Copyright 2012-2014 the original author or authors.
 *
 * 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.frank.search.solr.repository.cdi;

import com.frank.search.solr.core.SolrOperations;
import org.springframework.data.repository.cdi.CdiRepositoryExtensionSupport;

import javax.enterprise.event.Observes;
import javax.enterprise.inject.UnsatisfiedResolutionException;
import javax.enterprise.inject.spi.AfterBeanDiscovery;
import javax.enterprise.inject.spi.Bean;
import javax.enterprise.inject.spi.BeanManager;
import javax.enterprise.inject.spi.ProcessBean;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;

/**
 * @author Christoph Strobl
 * @author Mark Paluch
 */
public class SolrRepositoryExtension extends CdiRepositoryExtensionSupport {

    private final Map<String, Bean<SolrOperations>> solrOperationsMap = new HashMap<String, Bean<SolrOperations>>();

    @SuppressWarnings("unchecked")
    <T> void processBean(@Observes ProcessBean<T> processBean) {
        Bean<T> bean = processBean.getBean();
        for (Type type : bean.getTypes()) {
            if (type instanceof Class<?> && SolrOperations.class.isAssignableFrom((Class<?>) type)) {
                solrOperationsMap.put(bean.getQualifiers().toString(), ((Bean<SolrOperations>) bean));
            }
        }
    }

    void afterBeanDiscovery(@Observes AfterBeanDiscovery afterBeanDiscovery, BeanManager beanManager) {
        for (Entry<Class<?>, Set<Annotation>> entry : getRepositoryTypes()) {

            Class<?> repositoryType = entry.getKey();
            Set<Annotation> qualifiers = entry.getValue();

            Bean<?> repositoryBean = createRepositoryBean(repositoryType, qualifiers, beanManager);
            afterBeanDiscovery.addBean(repositoryBean);
        }
    }

    private <T> Bean<T> createRepositoryBean(Class<T> repositoryType, Set<Annotation> qualifiers,
            BeanManager beanManager) {
        Bean<SolrOperations> solrOperationBeans = this.solrOperationsMap.get(qualifiers.toString());

        if (solrOperationBeans == null) {
            throw new UnsatisfiedResolutionException(
                    String.format("Unable to resolve a bean for '%s' with qualifiers %s.",
                            SolrOperations.class.getName(), qualifiers));
        }

        return new SolrRepositoryBean<T>(solrOperationBeans, qualifiers, repositoryType, beanManager,
                getCustomImplementationDetector());
    }

}