public ArrayList<JsonObject> ApplyFilter2(FilterExpression expression) {
if (expression == null) {
return FullScan(expression);
} else {
if (expression.IndexedCondtionsByFieldName.isEmpty()) {
return FullScan(expression);
}
ArrayList<Long> setToScan = ExtractSubSetByIndexedCondtions(expression);
return ScanSet(expression, setToScan);
}
}
// Apply on indexed fields conditions
private ArrayList<Long> ExtractSubSetByIndexedCondtions(FilterExpression expression) {
ArrayList<Long> setToScan = null;
String globalName =
SchemaManager.GetGlobalIndexByTableNameAndProjectId(this.TableName, this.ProjectId);
NodeReference node =
ConnectionManager.Instance().getConnection().createNodeReference(globalName);
for (Map.Entry<String, ArrayList<FilterCondition>> entry :
expression.IndexedCondtionsByFieldName.entrySet()) {
setToScan = ExtractFromIndex(node, setToScan, expression, entry.getValue(), entry.getKey());
// we supply a only AND filter at the moment, that's why if founded count = 0 - we can stop.
if (setToScan.size() == 0) return setToScan;
}
return setToScan;
}