ArangoDB自带变换器

Question

如何添加我自己的ArangoDB配置转换器。

转换器的一个例子。

public class HTMLConverter {

    private static final boolean HTML_DESCRIPTION_IS_PRESENT = ClassUtils.isPresent("com.b.k.api.domain.extend.HTML", null);

    public static Collection<Converter<?, ?>> getConvertersToRegister() {
        if (!HTML_DESCRIPTION_IS_PRESENT) {
            return Collections.emptySet();
        }
        final List<Converter<?, ?>> converters = new ArrayList<>();
        converters.add(HtmlToStringConverter.INSTANCE);

        converters.add(StringToHtmlConverter.INSTANCE);
        return converters;
    }

    public enum HtmlToStringConverter implements Converter<HTML, String> {
        INSTANCE;

        @Override
        public String convert(final HTML source) {
            return source == null ? null : source.getXml();
        }
    }

    public enum StringToHtmlConverter implements Converter<String, HTML> {
        INSTANCE;

        @Override
        public HTML convert(final String source) {
            return source == null ? null : new HTML(source);
        }
    }
}

我的转换器的复制如下：

public class BKArangoCustomConverters extends CustomConversions {

    private static final StoreConversions STORE_CONVERSIONS;

    static {
        final Collection<Converter<?, ?>> converters = new ArrayList<>();
        converters.addAll(XMLConverter.getConvertersToRegister());
        converters.addAll(HTMLConverter.getConvertersToRegister());
        STORE_CONVERSIONS = StoreConversions.of(SimpleTypeHolder.DEFAULT, converters);
    }

    protected BKArangoCustomConverters(Collection<?> converters) {
        super(converters);
    }
}

有人问我如何使用扩展类"com.arangodb.springframework.config.AbstractArangoConfiguration".中的构建器"com.arangodb.ArangoDB.Builder“将新的转换器添加到ArangoDB配置中。

Answer 1

您必须在配置类中重写来自AbstractArangoConfiguration的方法AbstractArangoConfiguration，并在那里添加转换器。

public CustomConversions customConversions() {
  Collection<Converter<?, ?>> converters = new ArrayList<>();
  converters.addAll(XMLConverter.getConvertersToRegister());
  converters.addAll(HTMLConverter.getConvertersToRegister());
  return new ArangoCustomConversions(converters);
}

或者用我们自己的clasn类ArangoCustomConversions替换BKArangoCustomConverters。

public CustomConversions customConversions() {
  return new BKArangoCustomConverters(Collections.emptyList());
}