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| Interface Summary | |
| BitPatternDefinition | Interface for the meaning of bitgroups in a bitpattern. |
| DeviceClass | For device class data and references to DeviceProperty objects. |
| DeviceData | Interface DeviceData for fixed data about accelerator devices. |
| DeviceList | Interface DeviceList for a list of DeviceData for generic programs. |
| DeviceMessage | Interface DeviceMessage for messages involving a device. |
| DeviceProperty | DeviceProperty accesses data associated with a property. |
| DirectoryItem | The parent interface of all directory interfaces. |
| Class Summary | |
| DirectoryService | This abstract class is a starting point for getting DirectoryItem objects and object identifiers from string or numeric parameters. |
| Exception Summary | |
| BadConnectionException | The database is down or is not accessible or the connection is broken. |
| BadQueryException | One of the parameters of the method is not acceptable. |
| DataNotFoundException | The requested data could not be found. |
| NoSuchDataException | The requested data are not in the database in a valid form. |
| TooManyValuesException | Multiple values are returned when only one was expected. |
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