# OSGeo::FDO::Connections::Capabilities Namespace Reference

## Classes
class | ArgumentDefinition
| The ArgumentDefinition class contains metadata that describes an argument to a function. More...
class | ArgumentDefinitionCollection
| ArgumentDefinitionCollection is a collection of ArgumentDefinition objects. More...
class | FunctionDefinition
| The FunctionDefinition class contains metadata that describes a function and its arguments. More...
class | FunctionDefinitionCollection
| FunctionDefinitionCollection is a collection of FunctionDefinition objects. More...
interface | ICommandCapabilities
| The ICommandCapabilities interface declares the feature provider's level of support for Commands. More...
class | ICommandCapabilitiesImp
| The ICommandCapabilities interface declares the feature provider's level of support for Commands. More...
interface | IConnectionCapabilities
| The IConnectionCapabilities interface declares the feature provider's capabilities. More...
class | IConnectionCapabilitiesImp
| The IConnectionCapabilities interface declares the feature provider's capabilities. More...
interface | IExpressionCapabilities
| The IExpressionCapbilities interface declares the feature provider's level of support for Expression classes. More...
class | IExpressionCapabilitiesImp
| The IExpressionCapbilities interface declares the feature provider's level of support for Expression classes. More...
interface | IFilterCapabilities
| The IFilterCapabilities interface declares the feature provider's level of support for Filter classes. More...
class | IFilterCapabilitiesImp
| The IFilterCapabilities interface declares the feature provider's level of support for Filter classes. More...
interface | IGeometryCapabilities
| The IGeometryCapabilities class delineates available support for raster processing from a provider. More...
class | IGeometryCapabilitiesImp
| The IGeometryCapabilities class delineates available support for raster processing from a provider. More...
interface | IRasterCapabilities
| The IRasterCapabilities class delineates available support for raster processing from a provider. More...
class | IRasterCapabilitiesImp
| The IRasterCapabilities class delineates available support for raster processing from a provider. More...
interface | ISchemaCapabilities
| The ISchemaCapbilities interface declares the feature provider's level of support for the Feature Schema. More...
class | ISchemaCapabilitiesImp
| The ISchemaCapbilities interface declares the feature provider's level of support for the Feature Schema. More...
interface | ITopologyCapabilities
| FDO supports properties that inform the client code about capabilities that may vary between providers. More...
class | ITopologyCapabilitiesImp
| FDO supports properties that inform the client code about capabilities that may vary between providers. More...
class | ReadOnlyArgumentDefinitionCollection
| ReadOnlyArgumentDefinitionCollection is a collection of ReadOnlyArgumentDefinition objects. More...
class | ReadOnlySignatureDefinitionCollection
| The ReadOnlySignatureDefinitionCollection class represents a collection of ReadOnlySignatureDefinition objects. More...
class | SignatureDefinition
| The FDO SignatureDefinition class allows the signatures of FDO FunctionDefinition objects to be defined. More...
class | SignatureDefinitionCollection
| SignatureDefinitionCollection is a collection of SignatureDefinition elements. More...
## Functions
System::Boolean | ActivatesTopologyByArea ()
System::Boolean | BreaksCurveCrossingsAutomatically ()
System::Boolean | ConstrainsFeatureMovements ()
__property OSGeo::FDO::Schema::DataType | get_DataTypes ()[]
| Returns an array of the DataType objects the feature provider supports.
__property System::Int32 | get_Dimensionalities ()
| Returns the supported dimensionalities which are based on the bit masks defined in the Dimensionality enum. The Z and M bits indicate if the provider supports 3d or Measure dimensions in geometry data. The XY bit should be set too.
__property OSGeo::FDO::Filter::DistanceOperations | get_DistanceOperations ()[]
| Returns an array of DistanceOperation objects the feature provider supports.
__property OSGeo::FDO::Connections::Capabilities::FunctionDefinitionCollection * | get_Functions ()
| Returns a collection of FunctionDefinition objects the feature provider supports within expressions.
__property OSGeo::FDO::Common::GeometryComponentType | get_GeometryComponentTypes ()[]
| Return the list of supported component types. For example, if a client wanted to know if circular arcs were supported by a provider, it would call GetGeometryComponentTypes and check for CircularArcSegment in the returned list.
__property OSGeo::FDO::Commands::Locking::LockType | get_LockTypes ()[]
| Gets an array of the LockType values supported by the feature provider.
__property System::Int64 | get_MaximumDataValueLength (OSGeo::FDO::Schema::DataType dataType)
| Returns the maximum supported length of String, BLOB, or CLOB data properties. For decimal, it is the combination of the maximum scale and precision. For other data types that are not variable in size, the value returned is the byte length.
__property System::Int32 | get_MaximumDecimalPrecision ()
| Returns the maximum supported precision for a decimal data property.
__property System::Int32 | get_MaximumDecimalScale ()
| Returns the maximum supported scale for a decimal data property.
__property System::Int32 | get_NameSizeLimit (OSGeo::FDO::Connections::Capabilities::SchemaElementNameType name)
| Returns the maximum size of a value of the given type. It includes limits for the data store name, shema name, class name, property name and description.
__property System::String * | get_ReservedCharactersForName ()
| Returns a string that includes all the reserved characters that cannot be used for the various schema element names for the provider.
__property OSGeo::FDO::Commands::SpatialContext::SpatialContextExtentType | get_SpatialContextTypes ()[]
| Gets the spatial context extent types supported by the feature provider.
__property OSGeo::FDO::Filter::SpatialOperations | get_SpatialOperations ()[]
| Returns an array of SpatialOperation objects the feature provider supports.
__property OSGeo::FDO::Schema::DataType | get_SupportedAutoGeneratedTypes ()[]
| Returns an array of the DataType objects the feature provider supports for auto-generation.
__property OSGeo::FDO::Schema::DataType | get_SupportedIdentityPropertyTypes ()[]
| Returns a list of property types that can be used for identity properties.
__property System::Boolean | get_SupportsAssociationProperties ()
| Determines if the provider supports association property.
__property System::Boolean | get_SupportsAutoIdGeneration ()
| Determines if the provider can auto-generate unique ID values for a class.
__property System::Boolean | get_SupportsCompositeId ()
| Determines if the provider supports multiple identity properties per class.
__property System::Boolean | get_SupportsCompositeUniqueValueConstraints ()
| Determines if the provider supports composite unique value constraint.
__property System::Boolean | get_SupportsDataStoreScopeUniqueIdGeneration ()
| Determines if the provider can auto-generate unique ID values that are unique for the entire datastore, rather than just for a particular class.
__property System::Boolean | get_SupportsDefaultValue ()
| Returns TRUE if default values can be specified for a data property definition, FALSE otherwise.
__property System::Boolean | get_SupportsExclusiveValueRangeConstraints ()
| Determines if the provider supports exclusive value range constraints.
__property System::Boolean | get_SupportsInclusiveValueRangeConstraints ()
| Determines if the provider supports inclusive value range constraints.
__property System::Boolean | get_SupportsInheritance ()
| Determines if the feature provider supports inheritance.
__property System::Boolean | get_SupportsMultipleSchemas ()
| Determines if the provider supports multiple schemas. Returns false if the provider supports only a single schema.
__property System::Boolean | get_SupportsNetworkModel ()
| Determines if the provider supports the network model.
__property System::Boolean | get_SupportsNullValueConstraints ()
| Determines if the provider supports nullable value constraint.
__property System::Boolean | get_SupportsObjectProperties ()
| Determines if the provider supports object properties. Returns false if the provider supports only data and geometric properties.
__property System::Boolean | get_SupportsSchemaModification ()
| Determines if the provider support update a schema through the ApplySchema command. If False, then an application can only create a schema once for the provider. They can use the ApplySchema command once for a given datastore. Once the schema is defined, it cannot be changed. If True, then the provider supports the ability to modify or add to the schema after it is defined initially.
__property System::Boolean | get_SupportsSchemaOverrides ()
| Determines if the provider supports Schema Mapping Overrides (overrides to the default rules for mapping Feature Schemas to provider-specific physical schemas).
__property System::Boolean | get_SupportsUniqueValueConstraints ()
| Determines if the provider supports unique value constraint.
__property System::Boolean | get_SupportsValueConstraintsList ()
| Determines if the provider supports value constraints list.
System::Boolean | SupportsConfiguration ()
| Determines if the feature provider supports XML configuration.
System::Boolean | SupportsCSysWKTFromCSysName ()
| Determines if the provider supports specifying the coordinate system by name or ID without specifying the WKT when creating a new spatial context.
System::Boolean | SupportsDataModel (OSGeo::FDO::Raster::RasterDataModel *model)
| Returns true if the provider can handle the provided data model. It is expected that when used to transform between data models, the matrix defined by input and output data models is not sparse for every data model that is supported.
System::Boolean | SupportsFlush ()
| Determines if the provider can support the flush function. Flush is used to write any outstanding data to the datastore. This is mainly used by the file based providers to ensure that any cached data is writen to the file.
System::Boolean | SupportsGeodesicDistance ()
| Determines if the feature provider supports geodesic distance measurement. Returns false if the feature provider supports only linear distance measurement.
System::Boolean | SupportsLocking ()
| Determines if the feature provider supports persistent locking.
System::Boolean | SupportsLongTransactions ()
| Determines true if the feature provider supports long transactions.
System::Boolean | SupportsMultipleSpatialContexts ()
| Determines if the provider supports multiple spatial contexts.
System::Boolean | SupportsNonLiteralGeometricOperations ()
| Determines if spatial and distance operations can be applied between two geometric properties. Returns false if spatial and distance operations can be applied only between a geometric property and a literal geometry.
System::Boolean | SupportsParameters ()
| Determines if commands support parameterization.
System::Boolean | SupportsSelectDistinct ()
| Determines if Distinct can be used with SelectAggregates. This can be true only if the SelectAggregates command is supported by the provider.
System::Boolean | SupportsSelectExpressions ()
| Determines if the feature provider can use expressions for properties with Select and SelectAggregate commands.
System::Boolean | SupportsSelectFunctions ()
| Determines if simple functions can be used in Select and SelectAggregates command. Aggregate functions can only be used in the SelectAggregates command. Capability for using SelectAggregates is found in CommandCapabilities.
System::Boolean | SupportsSelectGrouping ()
| Determines if a grouping criteria is available in the SelectAggregates command. This can be true only if the SelectAggregates command is supported by the provider.
System::Boolean | SupportsSelectOrdering ()
| Determines if ordering is available in the Select and SelectAggregates command.
System::Boolean | SupportsSQL ()
| Determines if the feature provider supports SQL commands.
System::Boolean | SupportsStitching ()
| Returns true if the provider has the capability to stitch images from a select command (query) together into a single image.
System::Boolean | SupportsSubsampling ()
| Returns true if the provider can reduce the resolution of an image.
System::Boolean | SupportsTimeout ()
| Determines if the feature provider supports command execution timeout.
System::Boolean | SupportsTopologicalHierarchy ()
System::Boolean | SupportsTransactions ()
| Determines if the feature provider supports transactions.
## Variables
public __gc __interface | ICommandCapabilities
public __gc __interface | IConnectionCapabilities
public __gc __interface | IExpressionCapabilities
public __gc __interface | IFilterCapabilities
public __gc __interface | IGeometryCapabilities
public __gc __interface | IRasterCapabilities
public __gc __interface | ISchemaCapabilities
public __gc __interface | ITopologyCapabilities