C# 클래스 Azavea.Open.DAO.Util.CachingDataReader

A base class to save copying a whole lot of common code for different IDataReader implementations.

상속: IDataReader

보호된 프로퍼티들

프로퍼티	타입	설명
_config	DataReaderConfig
_indexesByName	int>.IDictionary
_log	log4net.ILog
_namesByIndex	string[]
_numCols	int
_valsByIndex	object[]

공개 메소드들

메소드	설명
Close ( ) : void	Closes the T:System.Data.IDataReader Object.
Dispose ( ) : void	Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
GetBoolean ( int i ) : bool	Gets the value of the specified column as a Boolean.
GetByte ( int i ) : byte	Gets the 8-bit unsigned integer value of the specified column.
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.
GetChar ( int i ) : char	Gets the character value of the specified column.
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.
GetDataTypeName ( int i ) : string	Gets the data type information for the specified field.
GetDateTime ( int i ) : System.DateTime	Gets the date and time data value of the specified field.
GetDecimal ( int i ) : decimal	Gets the fixed-position numeric value of the specified field.
GetDouble ( int i ) : double	Gets the double-precision floating point number of the specified field.
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).
GetFloat ( int i ) : float	Gets the single-precision floating point number of the specified field.
GetGuid ( int i ) : System.Guid	Returns the GUID value of the specified field.
GetInt16 ( int i ) : short	Gets the 16-bit signed integer value of the specified field.
GetInt32 ( int i ) : int	Gets the 32-bit signed integer value of the specified field.
GetInt64 ( int i ) : long	Gets the 64-bit signed integer value of the specified field.
GetName ( int i ) : string	Gets the name for the field to find.
GetOrdinal ( string name ) : int	Return the index of the named field.
GetSchemaTable ( ) : DataTable	Returns a T:System.Data.DataTable that describes the column metadata of the T:System.Data.IDataReader.
GetString ( int i ) : string	Gets the string value of the specified field.
GetValue ( int i ) : object	Return the value of the specified field.
GetValues ( object values ) : int	Gets all the attribute fields in the collection for the current record.
IsDBNull ( int i ) : bool	Return whether the specified field is set to null.
NextResult ( ) : bool	Advances the data reader to the next result, when reading the results of batch SQL statements.
Read ( ) : bool	Advances the T:System.Data.IDataReader to the next record.

보호된 메소드들

메소드	설명
CachingDataReader ( DataReaderConfig config ) : System	Create the data reader.
ClearVals ( ) : void	Resets the values in _valsByIndex.
FetchNextRow ( ) : bool	Moves the cursor (or whatever the implementation equivilent is) to the next row if there is one.
GetCachedValue ( int i ) : object	Will only ever look up the value once.
GetDataObject ( int i ) : object	This method gets the actual data value from the actual data source.

비공개 메소드들

메소드	설명
this ( int i ) : objectIDataRecord.System	Gets the column located at the specified index.
this ( string name ) : objectIDataRecord.System	Gets the column with the specified name.

메소드 상세

CachingDataReader() 보호된 메소드

Create the data reader.

protected CachingDataReader ( DataReaderConfig config ) : System
config	DataReaderConfig	The column indexes in the data, keyed by column name. This may include /// columns not in the mapping.
리턴	System

ClearVals() 보호된 메소드

Resets the values in _valsByIndex.

protected ClearVals ( ) : void
리턴	void

Close() 공개 추상적인 메소드

Closes the T:System.Data.IDataReader Object.

public abstract Close ( ) : void
리턴	void

Dispose() 공개 메소드

Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.

public Dispose ( ) : void
리턴	void

FetchNextRow() 보호된 추상적인 메소드

Moves the cursor (or whatever the implementation equivilent is) to the next row if there is one.

protected abstract FetchNextRow ( ) : bool
리턴	bool

GetBoolean() 공개 메소드

Gets the value of the specified column as a Boolean.

The index passed was outside the range of 0 through .

public GetBoolean ( int i ) : bool
i	int	The zero-based column ordinal.
리턴	bool

GetByte() 공개 메소드

Gets the 8-bit unsigned integer value of the specified column.

The index passed was outside the range of 0 through .

public GetByte ( int i ) : byte
i	int	The zero-based column ordinal.
리턴	byte

GetBytes() 공개 추상적인 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 abstract 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

GetCachedValue() 보호된 메소드

Will only ever look up the value once.

protected GetCachedValue ( int i ) : object
i	int	0-based column index.
리턴	object

GetChar() 공개 메소드

Gets the character value of the specified column.

The index passed was outside the range of 0 through .

public GetChar ( int i ) : char
i	int	The zero-based column ordinal.
리턴	char

GetChars() 공개 추상적인 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 abstract 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

GetData() 공개 추상적인 메소드

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

The index passed was outside the range of 0 through .

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

GetDataObject() 보호된 추상적인 메소드

This method gets the actual data value from the actual data source.

protected abstract GetDataObject ( int i ) : object
i	int	Column number to get, zero-based.
리턴	object

GetDataTypeName() 공개 메소드

Gets the data type information for the specified field.

The index passed was outside the range of 0 through .

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

GetDateTime() 공개 메소드

Gets the date and time data value of the specified field.

The index passed was outside the range of 0 through .

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

GetDecimal() 공개 메소드

Gets the fixed-position numeric value of the specified field.

The index passed was outside the range of 0 through .

public GetDecimal ( int i ) : decimal
i	int	The index of the field to find.
리턴	decimal

GetDouble() 공개 메소드

Gets the double-precision floating point number of the specified field.

The index passed was outside the range of 0 through .

public GetDouble ( int i ) : double
i	int	The index of the field to find.
리턴	double

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

GetFloat() 공개 메소드

Gets the single-precision floating point number of the specified field.

The index passed was outside the range of 0 through .

public GetFloat ( int i ) : float
i	int	The index of the field to find.
리턴	float

GetGuid() 공개 추상적인 메소드

Returns the GUID value of the specified field.

The index passed was outside the range of 0 through .

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

GetInt16() 공개 메소드

Gets the 16-bit signed integer value of the specified field.

The index passed was outside the range of 0 through .

public GetInt16 ( int i ) : short
i	int	The index of the field to find.
리턴	short

GetInt32() 공개 메소드

Gets the 32-bit signed integer value of the specified field.

The index passed was outside the range of 0 through .

public GetInt32 ( int i ) : int
i	int	The index of the field to find.
리턴	int

GetInt64() 공개 메소드

Gets the 64-bit signed integer value of the specified field.

The index passed was outside the range of 0 through .

public GetInt64 ( int i ) : long
i	int	The index of the field to find.
리턴	long

GetName() 공개 추상적인 메소드

Gets the name for the field to find.

The index passed was outside the range of 0 through .

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

GetOrdinal() 공개 메소드

Return the index of the named field.

public GetOrdinal ( string name ) : int
name	string	The name of the field to find.
리턴	int

GetSchemaTable() 공개 추상적인 메소드

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

The is closed.

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

GetString() 공개 메소드

Gets the string value of the specified field.

The index passed was outside the range of 0 through .

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

GetValue() 공개 메소드

Return the value of the specified field.

The index passed was outside the range of 0 through .

public GetValue ( int i ) : object
i	int	The index of the field to find.
리턴	object

GetValues() 공개 추상적인 메소드

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

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

IsDBNull() 공개 메소드

Return whether the specified field is set to null.

The index passed was outside the range of 0 through .

public IsDBNull ( int i ) : bool
i	int	The index of the field to find.
리턴	bool

NextResult() 공개 추상적인 메소드

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

public abstract NextResult ( ) : bool
리턴	bool

Read() 공개 메소드

Advances the T:System.Data.IDataReader to the next record.

public Read ( ) : bool
리턴	bool

프로퍼티 상세

_config 보호되어 있는 프로퍼티

The config object passed to the constructor. It is available in case the child class needs more data off of it.

protected DataReaderConfig _config
리턴	DataReaderConfig

_indexesByName 보호되어 있는 프로퍼티

The column indexes, keyed by the column name.

protected IDictionary _indexesByName
리턴	int>.IDictionary

_log 보호되어 있는 정적으로 프로퍼티

Logger that may be used by this class or its children.

protected static ILog,log4net _log
리턴	log4net.ILog

_namesByIndex 보호되어 있는 프로퍼티

The column names, in order from the data source.

protected string[] _namesByIndex
리턴	string[]

_numCols 보호되어 있는 프로퍼티

The number of columns that the data reader can read.

protected int _numCols
리턴	int

_valsByIndex 보호되어 있는 프로퍼티

The values for this row, in column order.

protected object[] _valsByIndex
리턴	object[]