exception CatalogError{ wstring diagnostic; };
9.6.11 Catalogue Service interfaces
The interface Discovery implements methods for discovery: query, present, explainCollection and getDomain
. These methods take a request message as input parameter and return a response message as output parameter.
interface Discovery
{ QueryResponse queryin QueryRequest request
raisesInvalidSession, InvalidQuery,
InvalidCollection, NotSupported, CatalogError;
PresentResponse presentin PresentRequest request raisesInvalidSession,
InvalidCollection, NotSupported,
CatalogError; ExplainCollectionResponse
explainCollectionin ExplainCollectionRequest request
raisesCatalogError; GetDomainResponse getDomainin GetDomainRequest request
raisesCatalogError; };
The next interface describes the Manager interface, which defines catalogue management functions. The operation transaction is taken literally from the General Model. This
operation can create, update, or delete catalogue entries. The appropriate meta information will be provided in the request messages.
interface Manager
{ This operation is used to by a client that has the appropriate
user privileges to execute a whole set of insert, update and delete operation of metadata to a catalog.
TransactionResponse transactionin
TransactionRequest request
raisesNotImplemented, CatalogError;
}; The interface Access is the interface for access messages. It describes
only one operation: the brokeredAccess function which has the request as input and which returns the response. Direct access is provided by
interfaces as the Simple Feature interface and the Coverage interface. These interfaces are not described here. The client can get a reference
to these interfaces by examining the ior field in the meta-information. interface Access
{ BrokeredAccessResponse
brokeredAccessin
BrokeredAccessRequest request
raisesNotImplemented, CatalogError;
};
The OGC_StatefulService interface provides four operations for interactive sessions between a server and a client. All operations have a comparable form of the operations
specified in the General Model.
Copyright © 2007 Open Geospatial Consortium, Inc. All Rights Reserved.
101
interface OGC_StatefulService : OGC_Service {
InitSessionResponse initSessionin InitSessionRequest request
raisesCatalogError; TerminateResponse terminateSessionin TerminateRequest
request raisesInvalidSession,
CatalogError; StatusResponse statusin StatusRequest request
raisesInvalidSession, InvalidRequest,
CatalogError; CancelResponse cancelin CancelRequest request
raisesInvalidSession, InvalidRequest,
CatalogError; };
The CatalogServices interface is the core of the CORBA profile. The CatalogServices inherits from the interfaces Discovery, Access and Manager. In this
way these services are realized.
NOTE Access and manager services are optional. If a server does not implement these services it throws the
exception NotImplemented.
The CatalogServices also inherits from OGC_StatefulService that is described below.
interface CatalogServices : OGC_StatefulService, Discovery, Access, Manager
{ };
9.6.12 Basic interfaces
Kategori