Map<String, Object> vars = null;
FiltersFunctionScoreQuery.ScoreMode scoreMode = FiltersFunctionScoreQuery.ScoreMode.First;
ArrayList<Filter> filters = new ArrayList<Filter>();
ArrayList<String> scripts = new ArrayList<String>();
TFloatArrayList boosts = new TFloatArrayList();
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 ("query".equals(currentFieldName)) {
query = parseContext.parseInnerQuery();
} else if ("params".equals(currentFieldName)) {
vars = parser.map();
}
} else if (token == XContentParser.Token.START_ARRAY) {
if ("filters".equals(currentFieldName)) {
while ((token = parser.nextToken()) != XContentParser.Token.END_ARRAY) {
String script = null;
Filter filter = null;
float fboost = Float.NaN;
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 ("script".equals(currentFieldName)) {
script = parser.text();
} else if ("boost".equals(currentFieldName)) {
fboost = parser.floatValue();
}
}
}
if (script == null && fboost == -1) {
throw new QueryParsingException(parseContext.index(), "[custom_filters_score] missing 'script' or 'boost' in filters array element");
}
if (filter == null) {
throw new QueryParsingException(parseContext.index(), "[custom_filters_score] missing 'filter' in filters array element");
}
filters.add(filter);
scripts.add(script);
boosts.add(fboost);
}
}
} else if (token.isValue()) {
if ("lang".equals(currentFieldName)) {
scriptLang = parser.text();
} else if ("boost".equals(currentFieldName)) {
boost = parser.floatValue();
} else if ("score_mode".equals(currentFieldName) || "scoreMode".equals(currentFieldName)) {
String sScoreMode = parser.text();
if ("avg".equals(sScoreMode)) {
scoreMode = FiltersFunctionScoreQuery.ScoreMode.Avg;
} else if ("max".equals(sScoreMode)) {
scoreMode = FiltersFunctionScoreQuery.ScoreMode.Max;
} else if ("total".equals(sScoreMode)) {
scoreMode = FiltersFunctionScoreQuery.ScoreMode.Total;
} else if ("first".equals(sScoreMode)) {
scoreMode = FiltersFunctionScoreQuery.ScoreMode.First;
} else {
throw new QueryParsingException(parseContext.index(), "illegal score_mode for nested query [" + sScoreMode + "]");
}
}
}
}
if (query == null) {
throw new QueryParsingException(parseContext.index(), "[custom_filters_score] requires 'query' field");
}
if (filters.isEmpty()) {
throw new QueryParsingException(parseContext.index(), "[custom_filters_score] requires 'filters' field");
}
SearchContext context = SearchContext.current();
if (context == null) {
throw new ElasticSearchIllegalStateException("No search context on going...");
}
FiltersFunctionScoreQuery.FilterFunction[] filterFunctions = new FiltersFunctionScoreQuery.FilterFunction[filters.size()];
for (int i = 0; i < filterFunctions.length; i++) {
ScoreFunction scoreFunction;
String script = scripts.get(i);
if (script != null) {
SearchScript searchScript = context.scriptService().search(context.lookup(), scriptLang, script, vars);
scoreFunction = new CustomScoreQueryParser.ScriptScoreFunction(searchScript);
} else {
scoreFunction = new BoostScoreFunction(boosts.get(i));
}
filterFunctions[i] = new FiltersFunctionScoreQuery.FilterFunction(filters.get(i), scoreFunction);
}
FiltersFunctionScoreQuery functionScoreQuery = new FiltersFunctionScoreQuery(query, scoreMode, filterFunctions);
functionScoreQuery.setBoost(boost);