C# Class Microsoft.Samples.PowerShell.Providers.AccessDBProvider

Inheritance: System.Management.Automation.Provider.NavigationCmdletProvider, IContentCmdletProvider

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Protected Methods

Method	Description
CopyItem ( string path, string copyPath, bool recurse ) : void	The Windows PowerShell engine calls this method when the Copy-Item cmdlet is run. This method copies an item at the specified path to the location specified.
GetChildItems ( string path, bool recurse ) : void	The Windows PowerShell engine calls this method when the Get-ChildItem cmdlet is run. This provider returns either the tables in the database or the rows of the table.
GetChildName ( string path ) : string	Gets the name of the leaf element in the specified path.
GetChildNames ( string path, ReturnContainers returnContainers ) : void	Return the names of all child items.
GetItem ( string path ) : void	The Windows PowerShell engine calls this method when the Get-Item cmdlet is run.
GetParentPath ( string path, string root ) : string	Returns the parent portion of the path, removing the child segment of the path.
HasChildItems ( string path ) : bool	Determines if the specified path has child items.
IsItemContainer ( string path ) : bool	Determine if the path specified is that of a container.
IsValidPath ( string path ) : bool	Test to see if the specified path is syntactically valid.
ItemExists ( string path ) : bool	Test to see if the specified item exists.
MakePath ( string parent, string child ) : string	Joins two strings with a provider specific path separator.
MoveItem ( string path, string destination ) : void	The Windows PowerShell engine calls this method when the Move-Item cmdlet is run. This provider moves the item specified by the path to the specified destination.
NewDrive ( System.Management.Automation.PSDriveInfo drive ) : System.Management.Automation.PSDriveInfo	The Windows PowerShell engine calls this method when the New-Drive cmdlet is run. This provider creates a connection to the database file and sets the Connection property in the PSDriveInfo.
NewItem ( string path, string type, object newItemValue ) : void	The Windows PowerShell engine calls this method when the New-Item cmdlet is run. This method creates a new item at the specified path.
NormalizeRelativePath ( string path, string basepath ) : string	Normalizes the path so that it is a relative path to the basePath that was passed.
RemoveDrive ( System.Management.Automation.PSDriveInfo drive ) : System.Management.Automation.PSDriveInfo	The Windows PowerShell engine calls this method when the Remove-Drive cmdlet is run. This provider removes a drive from the Access database.
RemoveItem ( string path, bool recurse ) : void	The Windows PowerShell engine calls this method when the Remove-Item cmdlet is run. This method removes (deletes) the item at the specified path. There are no elements in this store which are hidden from the user. Hence this method will not check for the presence of the Force parameter
SetItem ( string path, object values ) : void	The Windows PowerShell engine calls this method when the Set-Item cmdlet is run. This provider sets the content of a row of data specified by the supplied path parameter.

Private Methods

Method	Description
ChunkPath ( string path ) : string[]	Separates the path into individual elements.
GetAdapterForTable ( string tableName ) : System.Data.Odbc.OdbcDataAdapter	Obtain a data adapter for the specified Table An adapter serves as a bridge between a DataSet (in memory representation of table) and the data source
GetDataSetForTable ( System.Data.Odbc.OdbcDataAdapter adapter, string tableName ) : DataSet	Gets the DataSet (in memory representation) for the table for the specified adapter
GetDataTable ( DataSet ds, string tableName ) : DataTable	Get the DataTable object which can be used to operate on for the specified table in the data source
GetNamesFromPath ( string path, string &tableName, int &rowNumber ) : PathType	Returns the table name and the row number from the path.
GetNextID ( DataTable table ) : int	Gets the next available ID in the table
GetRow ( string tableName, int row ) : DatabaseRowInfo	Retrieves a single row from the named table.
GetRows ( string tableName ) : Collection	Return row information from a specified table.
GetTable ( string tableName ) : DatabaseTableInfo	Retrieve information about a single table.
GetTables ( ) : Collection	Retrieve the list of tables from the database.
NormalizePath ( string path ) : string	Adapts the path, making sure the correct path separator character is used.
PathIsDrive ( string path ) : bool	Checks to see if a given path is actually a drive name.
RemoveDriveFromPath ( string path ) : string	Ensures that the drive is removed from the specified path.
RemoveTable ( string tableName ) : void	Removes the specified table from the database
SafeConvertRowNumber ( string rowNumberAsStr ) : int	Method to safely convert a string representation of a row number into its Int32 equivalent If there is an exception, -1 is returned
TableIsPresent ( string tableName ) : bool	Checks to see if the specified table is present in the database.
TableNameIsValid ( string tableName ) : bool	Checks to see if the table name is valid. Helps to check for SQL injection attacks
ThrowTerminatingInvalidPathException ( string path ) : void	Throws an argument exception stating that the specified path does not represent either a table or a row

Method Details

CopyItem() protected method

The Windows PowerShell engine calls this method when the Copy-Item cmdlet is run. This method copies an item at the specified path to the location specified.

protected CopyItem ( string path, string copyPath, bool recurse ) : void
path	string	/// Path to the item to copy. ///
copyPath	string	/// Path to the item to copy to. ///
recurse	bool	/// Tells the provider to recurse subcontainers when copying. ///
return	void

GetChildItems() protected method

The Windows PowerShell engine calls this method when the Get-ChildItem cmdlet is run. This provider returns either the tables in the database or the rows of the table.

protected GetChildItems ( string path, bool recurse ) : void
path	string	The path to the parent item.
recurse	bool	A Boolean value that indicates true to return all /// child items recursively. ///
return	void

GetChildName() protected method

Gets the name of the leaf element in the specified path.

protected GetChildName ( string path ) : string
path	string	/// The full or partial provider specific path. ///
return	string

GetChildNames() protected method

Return the names of all child items.

protected GetChildNames ( string path, ReturnContainers returnContainers ) : void
path	string	The root path.
returnContainers	ReturnContainers	This parameter is not used.
return	void

GetItem() protected method

The Windows PowerShell engine calls this method when the Get-Item cmdlet is run.

protected GetItem ( string path ) : void
path	string	The path to the item to return.
return	void

GetParentPath() protected method

Returns the parent portion of the path, removing the child segment of the path.

protected GetParentPath ( string path, string root ) : string
path	string	/// A full or partial provider specific path. The path may be to an /// item that may or may not exist. ///
root	string	/// The fully qualified path to the root of a drive. This parameter /// may be null or empty if a mounted drive is not in use for this /// operation. If this parameter is not null or empty the result /// of the method should not be a path to a container that is a /// parent or in a different tree than the root. ///
return	string

HasChildItems() protected method

Determines if the specified path has child items.

protected HasChildItems ( string path ) : bool
path	string	The path to examine.
return	bool

IsItemContainer() protected method

Determine if the path specified is that of a container.

protected IsItemContainer ( string path ) : bool
path	string	The path to check.
return	bool

IsValidPath() protected method

Test to see if the specified path is syntactically valid.

protected IsValidPath ( string path ) : bool
path	string	The path to validate.
return	bool

ItemExists() protected method

Test to see if the specified item exists.

protected ItemExists ( string path ) : bool
path	string	The path to the item to verify.
return	bool

MakePath() protected method

Joins two strings with a provider specific path separator.

protected MakePath ( string parent, string child ) : string
parent	string	/// The parent segment of a path to be joined with the child. ///
child	string	/// The child segment of a path to be joined with the parent. ///
return	string

MoveItem() protected method

The Windows PowerShell engine calls this method when the Move-Item cmdlet is run. This provider moves the item specified by the path to the specified destination.

protected MoveItem ( string path, string destination ) : void
path	string	/// The path to the item to be moved. ///
destination	string	/// The path of the destination container. ///
return	void

NewDrive() protected method

The Windows PowerShell engine calls this method when the New-Drive cmdlet is run. This provider creates a connection to the database file and sets the Connection property in the PSDriveInfo.

protected NewDrive ( System.Management.Automation.PSDriveInfo drive ) : System.Management.Automation.PSDriveInfo
drive	System.Management.Automation.PSDriveInfo	/// Information describing the drive to create. ///
return	System.Management.Automation.PSDriveInfo

NewItem() protected method

The Windows PowerShell engine calls this method when the New-Item cmdlet is run. This method creates a new item at the specified path.

protected NewItem ( string path, string type, object newItemValue ) : void
path	string	The path to the new item.
type	string	The type of object to create. A "Table" object /// for creating a new table and a "Row" object for creating a new row /// in a table. ///
newItemValue	object	/// Object for creating a new instance at the specified path. For /// creating a "Table" the object parameter is ignored and for creating /// a "Row" the object must be of type string, which will contain comma /// separated values of the rows to insert. ///
return	void

NormalizeRelativePath() protected method

Normalizes the path so that it is a relative path to the basePath that was passed.

protected NormalizeRelativePath ( string path, string basepath ) : string
path	string	/// A fully qualified provider specific path to an item. The item /// should exist or the provider should write out an error. ///
basepath	string	/// The path that the return value should be relative to. ///
return	string

RemoveDrive() protected method

The Windows PowerShell engine calls this method when the Remove-Drive cmdlet is run. This provider removes a drive from the Access database.

protected RemoveDrive ( System.Management.Automation.PSDriveInfo drive ) : System.Management.Automation.PSDriveInfo
drive	System.Management.Automation.PSDriveInfo	The drive to remove.
return	System.Management.Automation.PSDriveInfo

RemoveItem() protected method

The Windows PowerShell engine calls this method when the Remove-Item cmdlet is run. This method removes (deletes) the item at the specified path.

There are no elements in this store which are hidden from the user. Hence this method will not check for the presence of the Force parameter

protected RemoveItem ( string path, bool recurse ) : void
path	string	The path to the item to remove.
recurse	bool	/// True if all children in a subtree should be removed, false if only /// the item at the specified path should be removed. Is applicable /// only for container (table) items. Its ignored otherwise (even if /// specified). ///
return	void

SetItem() protected method

The Windows PowerShell engine calls this method when the Set-Item cmdlet is run. This provider sets the content of a row of data specified by the supplied path parameter.

protected SetItem ( string path, object values ) : void
path	string	Specifies the path to the row whose columns /// will be updated.
values	object	Comma separated string of values
return	void