public static ThreadLocal<String> getContainsAggregatorThreadLocal() {
        return containsAggregatorThreadLocal;
    }
Method to construct AttributeProcessor list for the selector.

@param selector                    Selector
@param id                          stream id
@param metaComplexEvent            meta ComplexEvent
@param tableMap                    Table Map
@param variableExpressionExecutors list of VariableExpressionExecutors
@param outputStream                output stream
@param processingMode              processing mode of the query
@param outputExpectsExpiredEvents  is expired events sent as output
@param groupBy                     is Attributes groupBy
@param siddhiQueryContext          current siddhi query context  @return list of AttributeProcessors
modules/siddhi-core/src/main/java/io/siddhi/core/util/parser/SelectorParser.java