@Override
public SortField getSortField(SchemaField field, boolean top) {
field.checkSortability();
Object missingValue = null;
boolean sortMissingLast = field.sortMissingLast();
boolean sortMissingFirst = field.sortMissingFirst();
switch (type) {
case INTEGER:
if (sortMissingLast) {
missingValue = top ? Integer.MIN_VALUE : Integer.MAX_VALUE;
} else if (sortMissingFirst) {
missingValue = top ? Integer.MAX_VALUE : Integer.MIN_VALUE;
}
return new SortField(field.getName(), FieldCache.NUMERIC_UTILS_INT_PARSER, top)
.setMissingValue(missingValue);
case FLOAT:
if (sortMissingLast) {
missingValue = top ? Float.NEGATIVE_INFINITY : Float.POSITIVE_INFINITY;
} else if (sortMissingFirst) {
missingValue = top ? Float.POSITIVE_INFINITY : Float.NEGATIVE_INFINITY;
}
return new SortField(field.getName(), FieldCache.NUMERIC_UTILS_FLOAT_PARSER, top)
.setMissingValue(missingValue);
case DATE: // fallthrough
case LONG:
if (sortMissingLast) {
missingValue = top ? Long.MIN_VALUE : Long.MAX_VALUE;
} else if (sortMissingFirst) {
missingValue = top ? Long.MAX_VALUE : Long.MIN_VALUE;
}
return new SortField(field.getName(), FieldCache.NUMERIC_UTILS_LONG_PARSER, top)
.setMissingValue(missingValue);
case DOUBLE:
if (sortMissingLast) {
missingValue = top ? Double.NEGATIVE_INFINITY : Double.POSITIVE_INFINITY;
} else if (sortMissingFirst) {
missingValue = top ? Double.POSITIVE_INFINITY : Double.NEGATIVE_INFINITY;
}
return new SortField(field.getName(), FieldCache.NUMERIC_UTILS_DOUBLE_PARSER, top)
.setMissingValue(missingValue);
default:
throw new SolrException(
SolrException.ErrorCode.SERVER_ERROR, "Unknown type for trie field: " + field.name);
}
}
