How to use

MongoCustomConversions

in

org.springframework.data.mongodb.core.convert

private static MappingMongoConverter getDefaultMongoConverter() {
  MongoCustomConversions conversions = new MongoCustomConversions(Collections.emptyList());
  MongoMappingContext context = new MongoMappingContext();
  context.setSimpleTypeHolder(conversions.getSimpleTypeHolder());
  context.afterPropertiesSet();
  MappingMongoConverter converter = new MappingMongoConverter(NO_OP_REF_RESOLVER, context);
  converter.setCustomConversions(conversions);
  converter.afterPropertiesSet();
  return converter;
}

/**
 * Register custom {@link Converter}s in a {@link CustomConversions} object if required. These
 * {@link CustomConversions} will be registered with the {@link #mappingMongoConverter()} and
 * {@link #mongoMappingContext()}. Returns an empty {@link MongoCustomConversions} instance by default.
 *
 * @return must not be {@literal null}.
 */
@Bean
public CustomConversions customConversions() {
  return new MongoCustomConversions(Collections.emptyList());
}

private MongoMappingContext mongoMappingContext() {
  val mappingContext = new MongoMappingContext();
  mappingContext.setInitialEntitySet(getInitialEntitySet());
  mappingContext.setSimpleTypeHolder(this.customConversions.getSimpleTypeHolder());
  mappingContext.setFieldNamingStrategy(MongoDbConnectionFactory.fieldNamingStrategy());
  return mappingContext;
}

/**
 * Register custom {@link Converter}s in a {@link CustomConversions} object if required. These
 * {@link CustomConversions} will be registered with the {@link #mappingMongoConverter()} and
 * {@link #mongoMappingContext()}. Returns an empty {@link MongoCustomConversions} instance by default.
 *
 * @return must not be {@literal null}.
 */
@Bean
public CustomConversions customConversions() {
  return new MongoCustomConversions(Collections.emptyList());
}

private static MongoConverter getDefaultMongoConverter(MongoDbFactory factory) {
  DbRefResolver dbRefResolver = new DefaultDbRefResolver(factory);
  MongoCustomConversions conversions = new MongoCustomConversions(Collections.emptyList());
  MongoMappingContext mappingContext = new MongoMappingContext();
  mappingContext.setSimpleTypeHolder(conversions.getSimpleTypeHolder());
  mappingContext.afterPropertiesSet();
  MappingMongoConverter converter = new MappingMongoConverter(dbRefResolver, mappingContext);
  converter.setCustomConversions(conversions);
  converter.afterPropertiesSet();
  return converter;
}

@Override
public void afterPropertiesSet() {
  List<Object> customConverters = new ArrayList<>();
  customConverters.add(new MessageHistoryToDocumentConverter());
  customConverters.add(new DocumentToGenericMessageConverter());
  customConverters.add(new DocumentToMutableMessageConverter());
  DocumentToErrorMessageConverter docToErrorMessageConverter = new DocumentToErrorMessageConverter();
  if (MongoDbMessageStore.this.whiteListPatterns != null) {
    docToErrorMessageConverter.deserializingConverter
        .addWhiteListPatterns(MongoDbMessageStore.this.whiteListPatterns);
  }
  customConverters.add(docToErrorMessageConverter);
  customConverters.add(new DocumentToAdviceMessageConverter());
  customConverters.add(new ThrowableToBytesConverter());
  this.setCustomConversions(new MongoCustomConversions(customConverters));
  super.afterPropertiesSet();
}

private static MappingMongoConverter getDefaultMongoConverter() {
  MongoCustomConversions conversions = new MongoCustomConversions(Collections.emptyList());
  MongoMappingContext context = new MongoMappingContext();
  context.setSimpleTypeHolder(conversions.getSimpleTypeHolder());
  context.afterPropertiesSet();
  MappingMongoConverter converter = new MappingMongoConverter(NO_OP_REF_RESOLVER, context);
  converter.setCustomConversions(conversions);
  converter.afterPropertiesSet();
  return converter;
}

@Override
public void afterPropertiesSet() throws Exception {
  if (this.mongoTemplate == null) {
    if (this.mappingMongoConverter == null) {
      this.mappingMongoConverter = new MappingMongoConverter(new DefaultDbRefResolver(this.mongoDbFactory),
          new MongoMappingContext());
      this.mappingMongoConverter.setApplicationContext(this.applicationContext);
      List<Object> customConverters = new ArrayList<Object>();
      customConverters.add(new MessageToBinaryConverter());
      customConverters.add(new BinaryToMessageConverter());
      this.mappingMongoConverter.setCustomConversions(new MongoCustomConversions(customConverters));
      this.mappingMongoConverter.afterPropertiesSet();
    }
    this.mongoTemplate = new MongoTemplate(this.mongoDbFactory, this.mappingMongoConverter);
  }
  this.messageBuilderFactory = IntegrationUtils.getMessageBuilderFactory(this.applicationContext);
  IndexOperations indexOperations = this.mongoTemplate.indexOps(this.collectionName);
  indexOperations.ensureIndex(new Index(MessageDocumentFields.MESSAGE_ID, Sort.Direction.ASC));
  indexOperations.ensureIndex(new Index(MessageDocumentFields.GROUP_ID, Sort.Direction.ASC)
      .on(MessageDocumentFields.MESSAGE_ID, Sort.Direction.ASC)
      .unique());
  indexOperations.ensureIndex(new Index(MessageDocumentFields.GROUP_ID, Sort.Direction.ASC)
      .on(MessageDocumentFields.LAST_MODIFIED_TIME, Sort.Direction.DESC)
      .on(MessageDocumentFields.SEQUENCE, Sort.Direction.DESC));
}

private static MongoConverter getDefaultMongoConverter(MongoDbFactory factory) {
  DbRefResolver dbRefResolver = new DefaultDbRefResolver(factory);
  MongoCustomConversions conversions = new MongoCustomConversions(Collections.emptyList());
  MongoMappingContext mappingContext = new MongoMappingContext();
  mappingContext.setSimpleTypeHolder(conversions.getSimpleTypeHolder());
  mappingContext.afterPropertiesSet();
  MappingMongoConverter converter = new MappingMongoConverter(dbRefResolver, mappingContext);
  converter.setCustomConversions(conversions);
  converter.afterPropertiesSet();
  return converter;
}

@Bean
public MongoCustomConversions mongoCustomConversions() {
  return new MongoCustomConversions(Arrays.asList(
      new MessageToBinaryConverter(), new BinaryToMessageConverter()));
}

@Bean
public MongoTemplate mongoTemplate(MongoDbFactory mongoDbFactory, SequenceOption sequenceOption) {
  DbRefResolver dbRefResolver = new DefaultDbRefResolver(mongoDbFactory);
  MongoCustomConversions conversions = new MongoCustomConversions(resolverConverter());
  MongoMappingContext mappingContext = new BHBMongoMappingContext();
  mappingContext.setSimpleTypeHolder(conversions.getSimpleTypeHolder());
  mappingContext.afterPropertiesSet();
  MappingMongoConverter converter = new MappingMongoConverter(dbRefResolver, mappingContext);
  // _class 剔除
  converter.setTypeMapper(new DefaultMongoTypeMapper(null));
  converter.setCustomConversions(conversions);
  converter.afterPropertiesSet();
  // 需要自增时
  // MongoTemplate template=new DTXDMongoTemplate(mongoDbFactory,converter,
  // sequenceOption);
  MongoTemplate template = new MongoTemplate(mongoDbFactory, converter);
  return template;
}

@Override
public void afterPropertiesSet() {
  List<Object> customConverters = new ArrayList<>();
  customConverters.add(new MessageHistoryToDocumentConverter());
  customConverters.add(new DocumentToGenericMessageConverter());
  customConverters.add(new DocumentToMutableMessageConverter());
  DocumentToErrorMessageConverter docToErrorMessageConverter = new DocumentToErrorMessageConverter();
  if (MongoDbMessageStore.this.whiteListPatterns != null) {
    docToErrorMessageConverter.deserializingConverter
        .addWhiteListPatterns(MongoDbMessageStore.this.whiteListPatterns);
  }
  customConverters.add(docToErrorMessageConverter);
  customConverters.add(new DocumentToAdviceMessageConverter());
  customConverters.add(new ThrowableToBytesConverter());
  this.setCustomConversions(new MongoCustomConversions(customConverters));
  super.afterPropertiesSet();
}

@Override
public void afterPropertiesSet() throws Exception {
  if (this.mongoTemplate == null) {
    if (this.mappingMongoConverter == null) {
      this.mappingMongoConverter = new MappingMongoConverter(new DefaultDbRefResolver(this.mongoDbFactory),
          new MongoMappingContext());
      this.mappingMongoConverter.setApplicationContext(this.applicationContext);
      List<Object> customConverters = new ArrayList<Object>();
      customConverters.add(new MessageToBinaryConverter());
      customConverters.add(new BinaryToMessageConverter());
      this.mappingMongoConverter.setCustomConversions(new MongoCustomConversions(customConverters));
      this.mappingMongoConverter.afterPropertiesSet();
    }
    this.mongoTemplate = new MongoTemplate(this.mongoDbFactory, this.mappingMongoConverter);
  }
  this.messageBuilderFactory = IntegrationUtils.getMessageBuilderFactory(this.applicationContext);
  IndexOperations indexOperations = this.mongoTemplate.indexOps(this.collectionName);
  indexOperations.ensureIndex(new Index(MessageDocumentFields.MESSAGE_ID, Sort.Direction.ASC));
  indexOperations.ensureIndex(new Index(MessageDocumentFields.GROUP_ID, Sort.Direction.ASC)
      .on(MessageDocumentFields.MESSAGE_ID, Sort.Direction.ASC)
      .unique());
  indexOperations.ensureIndex(new Index(MessageDocumentFields.GROUP_ID, Sort.Direction.ASC)
      .on(MessageDocumentFields.LAST_MODIFIED_TIME, Sort.Direction.DESC)
      .on(MessageDocumentFields.SEQUENCE, Sort.Direction.DESC));
}