C# Class NetBase.Storage.FileTable

An on-disk table. This is loosely based on DBF of course, you can probably use it to read them. However, a lot of the fields are left empty - e.g. data types, etc. etc. These classes might make a good candidate for implementing IEnumerator

Inheritance: ITable

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Private Properties

Property	Type	Description
Open	void

Public Methods

Method	Description
AddRow ( Row r ) : void	Writes a row to disk
CalculateTotalRowSize ( ) : int
CommitToDisk ( string filename ) : void	This method is intended to be used only when creating a new table. So; e.g. not for normal writes.
Dispose ( ) : void
FileTable ( ) : System
FileTable ( string filename ) : System	Opens up a file handle on the table data and reads in the header. Note the file is held open until the FileTable is disposed.
Find ( Predicate p ) : List	Yes, I am sure there is room for optimisation here...
NextRow ( ) : Row	Retrieve the next row. Uses a seek, assuming the underlying framework will be sensible about it (we should usually already be in position)
Reset ( ) : void	Rewind the table back to the beginning
ToByteArray ( ) : byte[]	This is really only needed for sending data over the network in which case the results will (currently) always be the results of a query, and therefore always a MemoryTable

Private Methods

Method	Description
Open ( string filename ) : void

Method Details

AddRow() public method

Writes a row to disk

public AddRow ( Row r ) : void
r	Row
return	void

CalculateTotalRowSize() public method

public CalculateTotalRowSize ( ) : int
return	int

CommitToDisk() public method

This method is intended to be used only when creating a new table. So; e.g. not for normal writes.

public CommitToDisk ( string filename ) : void
filename	string
return	void

Dispose() public method

public Dispose ( ) : void
return	void

FileTable() public method

public FileTable ( ) : System
return	System

FileTable() public method

Opens up a file handle on the table data and reads in the header. Note the file is held open until the FileTable is disposed.

public FileTable ( string filename ) : System
filename	string
return	System

Find() public method

Yes, I am sure there is room for optimisation here...

public Find ( Predicate p ) : List
p	Predicate
return	List

NextRow() public method

Retrieve the next row. Uses a seek, assuming the underlying framework will be sensible about it (we should usually already be in position)

public NextRow ( ) : Row
return	Row

Reset() public method

Rewind the table back to the beginning

public Reset ( ) : void
return	void

ToByteArray() public method

This is really only needed for sending data over the network in which case the results will (currently) always be the results of a query, and therefore always a MemoryTable

public ToByteArray ( ) : byte[]
return	byte[]