Android Open Source - spring-sync Differential Synchronization Registrar

• Back to Development/data  ↑

From Project

Back to project page spring-sync.

License

The source code is released under:

Apache License

Java Source Code

/*
 * Copyright 2014 the original author or authors.
 */*from   w w w . jav a 2  s. c  om*/
 * 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.springframework.sync.diffsync.config;

import java.util.ArrayList;
import java.util.List;

import javax.servlet.http.HttpSession;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Scope;
import org.springframework.context.annotation.ScopedProxyMode;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.sync.diffsync.PersistenceCallbackRegistry;
import org.springframework.sync.diffsync.ShadowStore;
import org.springframework.sync.diffsync.shadowstore.MapBasedShadowStore;
import org.springframework.sync.diffsync.web.DiffSyncController;
import org.springframework.util.Assert;
import org.springframework.web.method.support.HandlerMethodArgumentResolver;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

/**
 * Configuration adapter for Differential Synchronization in Spring.
 * @author Craig Walls
 */
@Configuration
public class DifferentialSynchronizationRegistrar extends WebMvcConfigurerAdapter {

  private List<DiffSyncConfigurer> diffSyncConfigurers;

  @Override
  public void addArgumentResolvers(List<HandlerMethodArgumentResolver> argumentResolvers) {
    List<HttpMessageConverter<?>> messageConverters = new ArrayList<HttpMessageConverter<?>>();
    messageConverters.add(new MappingJackson2HttpMessageConverter());
  }

  @Autowired
  public void setDiffSyncConfigurers(List<DiffSyncConfigurer> diffSyncConfigurers) {
    Assert.notNull(diffSyncConfigurers, "At least one configuration class must implement DiffSyncConfigurer");
    Assert.notEmpty(diffSyncConfigurers, "At least one configuration class must implement DiffSyncConfigurer");
    this.diffSyncConfigurers = diffSyncConfigurers;
  }
    
  @Bean
  @Scope(value="session", proxyMode=ScopedProxyMode.TARGET_CLASS)
  public ShadowStore shadowStore(HttpSession session) {
    for (DiffSyncConfigurer diffSyncConfigurer : diffSyncConfigurers) {
      ShadowStore shadowStore = diffSyncConfigurer.getShadowStore(session.getId());
      if (shadowStore != null) {
        return shadowStore;
      }
    }
    return new MapBasedShadowStore(session.getId());
  }
  
  @Bean
  public PersistenceCallbackRegistry persistenceCallbackRegistry() {
    PersistenceCallbackRegistry registry = new PersistenceCallbackRegistry();
    for (DiffSyncConfigurer diffSyncConfigurer : diffSyncConfigurers) {
      diffSyncConfigurer.addPersistenceCallbacks(registry);
    }
    return registry;
  }
  
  @Bean
  public DiffSyncController diffSyncController(PersistenceCallbackRegistry callbackRegistry, ShadowStore shadowStore) {
    return new DiffSyncController(callbackRegistry, shadowStore);
  }

}

Java Source Code List

• Back to Development/data  ↑