Class HeuristicModelProvider

The HeuristicModelProvider encapsulates the underlying IModel implementations we use to provide different persistance performance characteristics, depending on the use-case and the consumer's inputs.

Inheritance
System.Object
BaseModelProvider
HeuristicModelProvider
Implements
Inherited Members
System.Object.ToString()
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
Namespace: Xbim.Ifc
Assembly: Xbim.IO.Esent.dll
Syntax
public class HeuristicModelProvider : BaseModelProvider, IModelProvider
Remarks

This store permits a MemoryModel to be used where it's appropriate, while switching to an EsentModel when persistance is required, or a source model is above a size threshold. The store also permits a MemoryModel to persisted.

Fields

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DefaultIfcDatabaseSizeThreshHoldMb

The default largest size in MB for an IFC file to be loaded into memory, above this size the store will choose to use the database storage media to minimise the memory footprint. This size can be set in the config file or in the open statement of this store

Declaration
public static double DefaultIfcDatabaseSizeThreshHoldMb
Field Value
Type Description
System.Double

Properties

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Capabilities

Describes the capabilities of the provider

Declaration
public override StoreCapabilities Capabilities { get; }
Property Value
Type Description
StoreCapabilities
Overrides

Methods

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Close(IModel)

Closes a Model store, releasing any resources

Declaration
public override void Close(IModel model)
Parameters
Type Name Description
IModel model
Overrides
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Create(XbimSchemaVersion, String)

Creates a new Persistent model store

Declaration
public override IModel Create(XbimSchemaVersion ifcVersion, string dbPath)
Parameters
Type Name Description
XbimSchemaVersion ifcVersion
System.String dbPath
Returns
Type Description
IModel
Overrides
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Create(XbimSchemaVersion, XbimStoreType)

Creates a new model store, with the consumer choosing the implementation

Declaration
public override IModel Create(XbimSchemaVersion ifcVersion, XbimStoreType storageType)
Parameters
Type Name Description
XbimSchemaVersion ifcVersion
XbimStoreType storageType
Returns
Type Description
IModel
Overrides
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GetLocation(IModel)

Gets the location of a model, where it is a persisted model store.

Declaration
public override string GetLocation(IModel model)
Parameters
Type Name Description
IModel model
Returns
Type Description
System.String
Overrides
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GetXbimSchemaVersion(String)

Gets the IFC Schema version for a model

Declaration
public override XbimSchemaVersion GetXbimSchemaVersion(string modelPath)
Parameters
Type Name Description
System.String modelPath

Path to a model in any supported format (IFC, IfcXml, IfcZip, or XBIM)
Returns
Type Description
XbimSchemaVersion
Overrides
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Open(Stream, StorageType, XbimSchemaVersion, XbimModelType, XbimDBAccess, ReportProgressDelegate, Int32)

Opens a model from the provided stream

Declaration
public override IModel Open(Stream stream, StorageType dataType, XbimSchemaVersion schema, XbimModelType modelType, XbimDBAccess accessMode = XbimDBAccess.Read, ReportProgressDelegate progDelegate = null, int codePageOverride = -1)
Parameters
Type Name Description
System.IO.Stream stream
StorageType dataType
XbimSchemaVersion schema
XbimModelType modelType
XbimDBAccess accessMode
ReportProgressDelegate progDelegate
System.Int32 codePageOverride
Returns
Type Description
IModel
Overrides
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Open(String, XbimSchemaVersion, Nullable<Double>, ReportProgressDelegate, XbimDBAccess, Int32)

Opens a model from the provided path, inferring model implementation based on format and model size

Declaration
public override IModel Open(string path, XbimSchemaVersion schemaVersion, double? ifcDatabaseSizeThreshHold = null, ReportProgressDelegate progDelegate = null, XbimDBAccess accessMode = XbimDBAccess.Read, int codePageOverride = -1)
Parameters
Type Name Description
System.String path

Path to the model file, in any support IFC or XBIM format
XbimSchemaVersion schemaVersion
System.Nullable<System.Double> ifcDatabaseSizeThreshHold
ReportProgressDelegate progDelegate
XbimDBAccess accessMode
System.Int32 codePageOverride
Returns
Type Description
IModel
Overrides
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Persist(IModel, String, ReportProgressDelegate)

Persists the model to a permanent store

Declaration
public override void Persist(IModel model, string fileName, ReportProgressDelegate progDelegate = null)
Parameters
Type Name Description
IModel model
System.String fileName
ReportProgressDelegate progDelegate
Overrides

Implements