C# 클래스 Azavea.Open.DAO.CSV.CsvDataReader

A datareader that reads CSV files.

상속: UnqueryableDataReader

파일 보기 프로젝트 열기: azavea/net-dao-csv 1 사용 예제들

공개 메소드들

메소드	설명
Close ( ) : void	Closes the T:System.Data.IDataReader Object.
CsvDataReader ( CsvDaLayer layer, ClassMapping mapping, DaoCriteria criteria ) : System	Create the data reader.
GetBytes ( int i, long fieldOffset, byte buffer, int bufferoffset, int length ) : long	Reads a stream of bytes from the specified column offset into the buffer as an array, starting at the given buffer offset.
GetChars ( int i, long fieldoffset, char buffer, int bufferoffset, int length ) : long	Reads a stream of characters from the specified column offset into the buffer as an array, starting at the given buffer offset.
GetData ( int i ) : IDataReader	Returns an T:System.Data.IDataReader for the specified column ordinal.
GetFieldType ( int i ) : Type	Gets the T:System.Type information corresponding to the type of T:System.Object that would be returned from M:System.Data.IDataRecord.GetValue(System.Int32).
GetGuid ( int i ) : System.Guid	Returns the GUID value of the specified field.
GetName ( int i ) : string	Gets the name for the field to find.
GetSchemaTable ( ) : DataTable	Returns a T:System.Data.DataTable that describes the column metadata of the T:System.Data.IDataReader.
GetValues ( object values ) : int	Gets all the attribute fields in the collection for the current record.
NextResult ( ) : bool	Advances the data reader to the next result, when reading the results of batch SQL statements.

보호된 메소드들

메소드	설명
GetColumnIndex ( string colName ) : int	Helper so the data access layer can be efficient in reading/rewriting CSVs.
ReadRawRow ( ) : IList	This reads the row from the CSV. It basically just tokenizes it, it does not verify that there are any particular number of values or anything else.

비공개 메소드들

메소드	설명
GetConfig ( CsvDaLayer layer, ClassMapping mapping ) : DataReaderConfig
ReadRawCsvRow ( TextReader reader ) : IList

메소드 상세

Close() 공개 메소드

Closes the T:System.Data.IDataReader Object.

public Close ( ) : void
리턴	void

CsvDataReader() 공개 메소드

Create the data reader.

public CsvDataReader ( CsvDaLayer layer, ClassMapping mapping, DaoCriteria criteria ) : System
layer	CsvDaLayer	Data access layer that will give us the TextReader we need.
mapping	ClassMapping	ClassMapping for the type we're returning.
criteria	Azavea.Open.DAO.Criteria.DaoCriteria	Since there is no way to filter before we read the file, /// the reader checks each row read to see if it matches the /// criteria, if not, it is skipped.
리턴	System

GetBytes() 공개 메소드

Reads a stream of bytes from the specified column offset into the buffer as an array, starting at the given buffer offset.

The index passed was outside the range of 0 through .

public GetBytes ( int i, long fieldOffset, byte buffer, int bufferoffset, int length ) : long
i	int	The zero-based column ordinal.
fieldOffset	long	The index within the field from which to start the read operation.
buffer	byte	The buffer into which to read the stream of bytes.
bufferoffset	int	The index for to start the read operation.
length	int	The number of bytes to read.
리턴	long

GetChars() 공개 메소드

Reads a stream of characters from the specified column offset into the buffer as an array, starting at the given buffer offset.

The index passed was outside the range of 0 through .

public GetChars ( int i, long fieldoffset, char buffer, int bufferoffset, int length ) : long
i	int	The zero-based column ordinal.
fieldoffset	long	The index within the row from which to start the read operation.
buffer	char	The buffer into which to read the stream of bytes.
bufferoffset	int	The index for to start the read operation.
length	int	The number of bytes to read.
리턴	long

GetColumnIndex() 보호된 메소드

Helper so the data access layer can be efficient in reading/rewriting CSVs.

protected GetColumnIndex ( string colName ) : int
colName	string
리턴	int

GetData() 공개 메소드

Returns an T:System.Data.IDataReader for the specified column ordinal.

The index passed was outside the range of 0 through .

public GetData ( int i ) : IDataReader
i	int	The index of the field to find.
리턴	IDataReader

GetFieldType() 공개 메소드

Gets the T:System.Type information corresponding to the type of T:System.Object that would be returned from M:System.Data.IDataRecord.GetValue(System.Int32).

The index passed was outside the range of 0 through .

public GetFieldType ( int i ) : Type
i	int	The index of the field to find.
리턴	System.Type

GetGuid() 공개 메소드

Returns the GUID value of the specified field.

The index passed was outside the range of 0 through .

public GetGuid ( int i ) : System.Guid
i	int	The index of the field to find.
리턴	System.Guid

GetName() 공개 메소드

Gets the name for the field to find.

The index passed was outside the range of 0 through .

public GetName ( int i ) : string
i	int	The index of the field to find.
리턴	string

GetSchemaTable() 공개 메소드

Returns a T:System.Data.DataTable that describes the column metadata of the T:System.Data.IDataReader.

The is closed.

public GetSchemaTable ( ) : DataTable
리턴	System.Data.DataTable

GetValues() 공개 메소드

Gets all the attribute fields in the collection for the current record.

public GetValues ( object values ) : int
values	object	An array of to copy the attribute fields into.
리턴	int

NextResult() 공개 메소드

Advances the data reader to the next result, when reading the results of batch SQL statements.

public NextResult ( ) : bool
리턴	bool

ReadRawRow() 보호된 메소드

This reads the row from the CSV. It basically just tokenizes it, it does not verify that there are any particular number of values or anything else.

protected ReadRawRow ( ) : IList
리턴	IList