ArangoDB own converters - spring-data

Question

How can I add my own ArangoDB configuration converter.
An example of a converter.
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);
}
}
}
The reproduction of my converters looks like this:
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);
}
}
I am asked how can I add new converters to the ArangoDB configuration using the builder "com.arangodb.ArangoDB.Builder" in the extension class "com.arangodb.springframework.config.AbstractArangoConfiguration".

Answer 1

You have to override the method customConversions() from AbstractArangoConfiguration in your configuration class and add your converters there.
public CustomConversions customConversions() {
Collection<Converter<?, ?>> converters = new ArrayList<>();
converters.addAll(XMLConverter.getConvertersToRegister());
converters.addAll(HTMLConverter.getConvertersToRegister());
return new ArangoCustomConversions(converters);
}
or you replace the ArangoCustomConversions with our own clasn class BKArangoCustomConverters.
public CustomConversions customConversions() {
return new BKArangoCustomConverters(Collections.emptyList());
}