@Override
public Filter parse(QueryParseContext parseContext) throws IOException, QueryParsingException {
XContentParser parser = parseContext.parser();
Filter filter = null;
boolean cache = true;
String currentFieldName = null;
XContentParser.Token token;
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
currentFieldName = parser.currentName();
} else if (token == XContentParser.Token.START_OBJECT) {
if ("filter".equals(currentFieldName)) {
filter = parseContext.parseInnerFilter();
}
} else if (token.isValue()) {
if ("cache".equals(currentFieldName)) {
cache = parser.booleanValue();
}
}
}
if (filter == null) {
throw new QueryParsingException(index, "filter is required when using `not` filter");
}
if (cache) {
filter = parseContext.cacheFilterIfPossible(filter);
}
// no need to cache this one
return new NotFilter(filter);
}
