com.github.zhengframework.jpa.JpaModule Maven / Gradle / Ivy

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package com.github.zhengframework.jpa;

import com.github.zhengframework.configuration.Configuration;
import com.github.zhengframework.configuration.ConfigurationAware;
import com.github.zhengframework.configuration.ConfigurationBeanMapper;
import com.github.zhengframework.guice.ExposedPrivateModule;
import com.google.common.base.Preconditions;
import com.google.inject.AbstractModule;
import java.lang.reflect.InvocationTargetException;
import java.util.Map;
import lombok.extern.slf4j.Slf4j;

@Slf4j
public class JpaModule extends AbstractModule implements ConfigurationAware {

  private Configuration configuration;

  @Override
  protected void configure() {
    Preconditions.checkArgument(configuration != null, "configuration is null");

    Map persistenceConfigMap = ConfigurationBeanMapper
        .resolve(configuration, JpaConfig.class);
    JpaConfig jpaConfig = persistenceConfigMap.getOrDefault("", new JpaConfig());
    if (jpaConfig.getPersistenceUnitName() == null) {
      jpaConfig.setPersistenceUnitName("zheng-jpa");
    }
    install(new JpaInternalModule(jpaConfig));

    Class extraModuleClass = jpaConfig.getExtraModuleClass();
    if (extraModuleClass != null) {
      try {
        ExposedPrivateModule module = extraModuleClass
            .getDeclaredConstructor().newInstance();
        log.info("install extra module: " + extraModuleClass.getName());
        install(module);
      } catch (InstantiationException | IllegalAccessException | InvocationTargetException | NoSuchMethodException e) {
        throw new RuntimeException(e);
      }
    }
  }

  @Override
  public void initConfiguration(Configuration configuration) {
    this.configuration = configuration;
  }
}