OverviewFor a global overview of metadata in SIS, see the
|Class hierarchy||Aggregation hierarchy|
ISO 19115 metadata|
Null values, nil objects and collectionsAll constructors and setter methods accept
nullarguments. A null argument value means that the metadata element can not be provided, and the reason for that is unspecified. Alternatively, users can specify why a metadata element is missing by providing a value created by
Unless otherwise noted in the Javadoc, all getter methods may return an empty collection,
an empty array or
null if the type is neither a collection or an array.
Note that non-null values may be
Unless the metadata object has been marked as unmodifiable and unless otherwise noted in the Javadoc, all collections returned by getter methods are live: adding new elements in the collection modify directly the underlying metadata object.
Defined in the
ClassDescriptionDesignations for the measuring instruments, the platform carrying them, and the mission to which the data contributes.Information about the environmental conditions during the acquisition.Identification of a significant collection point within an operation.Designations for the measuring instruments.Describes the characteristics, spatial and temporal extent of the intended object to be observed.Designations for the operation used to acquire the dataset.Designations for the planning information related to meeting the data acquisition requirements.Designation of the platform used to acquire the dataset.Identification of collection coverage.Range of date validity.Requirement to be satisfied by the planned data acquisition.