Common use of Object Type Clause in Contracts

Object Type. The Object Type is selected in the Create a Blank Query tab as the first step of defining a new query. You select from a list of the available types for the query’s Data Source Type, such as Host or Agent. This section of the definition sets the root of the path from which the query searches for objects of the given Data Source Type. The From field can be chosen from data sources or parameters that you have set in Required Parameters. When Monitoring is chosen in the From field, the Path menu lists the entire Monitoring schema. A query search starts at the root of the object hierarchy, denoted by “/”, or at the object declared in the required parameters. A query returns a list of data objects. Instead of directly returning these data objects, the Aggregations settings creates new data objects that contain only aggregated values. For example, if a query returns a set of alarms, you can replace these data objects with an Alarm data object containing the maximum severity of those alarms. Aggregation data objects are of the given data-object type, and they contain aggregated values of certain properties within the data objects. The aggregation types are: Unlike the other aggregation types, a count aggregation returns a Count data object with only two properties: Count is also different from the other aggregation types in how it handles a query that does not return any data objects. The other types will not create an aggregated object in this case. Count does create an aggregated object, with Value set to 0. You can create more than one aggregation on the same query. If you do this, multiple aggregated data objects are returned in the results of the query: one for each aggregation, in the order specified. Leave the field blank if you do not require an aggregation on a property. 1 Click the button under Aggregations. A new set of fields for an aggregation is added. 2 In the Calculate drop-down list select how you want the property field calculated.