org.atteo.moonshine.springdata.SpringData.java Source code

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Here is the source code for org.atteo.moonshine.springdata.SpringData.java

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/*
 * Copyright 2013 Atteo.
 *
 * 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 org.atteo.moonshine.springdata;

import java.util.HashSet;
import java.util.Set;

import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlIDREF;
import javax.xml.bind.annotation.XmlRootElement;

import org.atteo.classindex.ClassIndex;
import org.atteo.moonshine.jpa.JpaService;
import org.atteo.moonshine.services.ImportService;
import org.atteo.moonshine.TopLevelService;
import org.springframework.data.repository.NoRepositoryBean;
import org.springframework.data.repository.Repository;
import org.springframework.data.repository.RepositoryDefinition;
import org.springframework.data.repository.core.support.RepositoryFactorySupport;

import com.google.common.base.Strings;
import com.google.inject.Module;
import com.google.inject.PrivateModule;

/**
 * Creates and binds Spring Data JPA repositories.
 */
@XmlRootElement
public class SpringData extends TopLevelService {
    @XmlIDREF
    @ImportService
    private JpaService jpa;

    /**
     * Build repositories only from the specified package or below.
     */
    @XmlElement
    private String packagePrefix = "";

    @Override
    public Module configure() {
        return new PrivateModule() {
            @Override
            protected void configure() {
                bind(RepositoryFactorySupport.class).toProvider(new RepositoryFactoryProvider());

                if (Strings.isNullOrEmpty(packagePrefix)) {
                    return;
                }
                Set<Class<?>> classes = new HashSet<>();
                for (Class<? extends Repository> klass : ClassIndex.getSubclasses(Repository.class)) {
                    configureProvider(klass);
                    classes.add(klass);
                }
                for (Class<?> klass : ClassIndex.getAnnotated(RepositoryDefinition.class)) {
                    if (classes.contains(klass)) {
                        continue;
                    }
                    configureProvider(klass);
                }
            }

            private <T> void configureProvider(Class<T> klass) {
                if (klass.getAnnotation(NoRepositoryBean.class) != null) {
                    return;
                }
                if (!klass.getCanonicalName().startsWith(packagePrefix + ".")) {
                    return;
                }
                bind(klass).toProvider(new RepositoryProvider<>(klass));
                expose(klass);
            }
        };
    }
}