Sorting on BigDecimal Field

Hibernate Search
2

Unfortunately, for custom bridges, the SortableField annotation is only used to validate queries, it’s ignored when indexing.

You will need to add the docvalues yourself.
Instead of this:

public void set(String name, Object value, Document document, LuceneOptions luceneOptions) {
	if (value != null) {
		BigDecimal decimalValue = (BigDecimal) value;
		Long indexedValue = decimalValue.multiply(storeFactor).longValue();
		luceneOptions.addNumericFieldToDocument(name, indexedValue, document);
	}
}

… do this:

public void set(String name, Object value, Document document, LuceneOptions luceneOptions) {
	if (value != null) {
		BigDecimal decimalValue = (BigDecimal) value;
		Long indexedValue = decimalValue.multiply(storeFactor).longValue();
		luceneOptions.addNumericFieldToDocument(name, indexedValue, document);
		luceneOptions.addNumericDocValuesFieldToDocument(name, indexedValue, document);
	}
}