Query.Datagrid.Aggregate.groupAvgList()

Signature

Object groupAvgList(String resultSetName, String entityUri, String fieldName, String filter, String... groupByFieldNames)

Domain

QUERY, ACTION

Description

Find the average of the entities from the field specified by field name, of the specified URI, which satisfies the condition in the filter for each group.

Parameters

NameTypeDescription
resultSetNameStringThe resultset name
entityUriStringThe entity uri.
fieldNameStringName of the field used for computation.
filterStringCondition to be satisfied by the entities in the result.
groupByFieldNamesString...Names of the fields in groupBy clause.

Returns

TypeDescription
ObjectReturn a List of rows. Each row may be a single Object column or an Object[] of columns.

Cautions

none

Example

String resultSetName = "groupAvgListRS" ;
Object resultSet = Query.Datagrid.Aggregate.groupAvgList(resultSetName, "/Concepts/Employee","exp","age < 4", "age", "dept");
//Iterate over the result set
while(Query.Util.sizeOfList(resultList) > 0){
    Object[] s = Query.Util.removeFromList(resultList, 0);
    /* s[0]-- age, s[1]-- exp, s[2]-- average exp of the employee entities
    satisfying the filter condition for this age and exp */
    System.debugOut(resultSetName + " :: " + s[0] + " : "+ s[1] + " : "+ s[2]);
}