Deveel.Data.Store.InMemoryStore.InMemoryArea Class Reference

Inheritance diagram for Deveel.Data.Store.InMemoryStore.InMemoryArea:

Public Member Functions
	InMemoryArea (long id, bool readOnly, byte[] data, int offset, int length)
void	CopyTo (IArea destArea, int size)
	Copies the given amount of bytes from the current position of the this area to another one. More...
int	Read (byte[] buffer, int offset, int length)
	Reads an array of bytes from the underlying IArea and advances the position by length . More...
void	Write (byte[] buffer, int offset, int length)
void	Flush ()

Properties
long	Id [get, private set]
bool	IsReadOnly [get, private set]
long	Position [get, set]
int	Capacity [get]
int	Length [get, private set]
Properties inherited from Deveel.Data.Store.IArea
long	Id [get]
	Returns the unique identifier that represents this area. More...
bool	IsReadOnly [get]
	Gets a value indicating whether this area can be written or not. More...
long	Position [get, set]
	Returns or sets the current position of the pointer within the area. More...
int	Length [get]

Private Member Functions
long	CheckPositionBounds (int diff)

Private Attributes
readonly byte[]	data
long	position
readonly int	startPosition
readonly int	endPosition

Detailed Description

Definition at line 207 of file InMemoryStore.cs.

Constructor & Destructor Documentation

Deveel.Data.Store.InMemoryStore.InMemoryArea.InMemoryArea ( long  id, bool  readOnly, byte[]  data, int  offset, int  length  )

inline

Definition at line 213 of file InMemoryStore.cs.

                                                                                             {
                this.data = data;
                Length = length;

                position = startPosition = offset;
                endPosition = offset + length;

                Id = id;
                IsReadOnly = readOnly;
            }

Member Function Documentation

long Deveel.Data.Store.InMemoryStore.InMemoryArea.CheckPositionBounds ( int  diff )

inlineprivate

Definition at line 245 of file InMemoryStore.cs.

                                                       {
                var newPos = position + diff;
                if (newPos > endPosition)
                    throw new IOException(String.Format("Attempt to read out of bounds: from {0} to {1} (position {2} to {3})",
                        startPosition, endPosition, position, newPos));

                var oldPos = position;
                position = newPos;
                return oldPos;
            }

void Deveel.Data.Store.InMemoryStore.InMemoryArea.CopyTo ( IArea  destArea, int  size  )

inline

Copies the given amount of bytes from the current position of the this area to another one.

Parameters

destArea	The IArea where to write.
size	The number of bytes to Write.

Implements Deveel.Data.Store.IArea.

Definition at line 256 of file InMemoryStore.cs.

                                                         {
                const int bufferSize = 2048;
                byte[] buf = new byte[bufferSize];
                int toCopy = System.Math.Min(size, bufferSize);

                while (toCopy > 0) {
                    Read(buf, 0, toCopy);
                    destArea.Write(buf, 0, toCopy);
                    size -= toCopy;
                    toCopy = System.Math.Min(size, bufferSize);
                }
            }

void Deveel.Data.Store.InMemoryStore.InMemoryArea.Flush ( )

inline

Implements Deveel.Data.Store.IArea.

Definition at line 286 of file InMemoryStore.cs.

                                {
            }

int Deveel.Data.Store.InMemoryStore.InMemoryArea.Read ( byte[]  buffer, int  offset, int  length  )

inline

Reads an array of bytes from the underlying IArea and advances the position by length .

Parameters

buffer	The destination buffer into which to Read the number of bytes given from the area.
offset	The offset within the buffer from where to start writing the byte Read into.
length	The number of bytes to Read from the area. This is also the incremental size of the position of the area.

Returns

Returns the number of bytes actually Read from the IArea.

Implements Deveel.Data.Store.IArea.

Definition at line 269 of file InMemoryStore.cs.

                                                                   {
#if PCL
                Array.Copy(data, (int)CheckPositionBounds(length), buffer, offset, length);
#else
                Array.Copy(data, CheckPositionBounds(length), buffer, offset, length);
#endif
                return length;
            }

void Deveel.Data.Store.InMemoryStore.InMemoryArea.Write ( byte[]  buffer, int  offset, int  length  )

inline

Parameters

buffer
offset
length

Implements Deveel.Data.Store.IArea.

Definition at line 278 of file InMemoryStore.cs.

                                                                     {
#if PCL
                Array.Copy(buffer, offset, data, (int) CheckPositionBounds(length), length);
#else
                Array.Copy(buffer, offset, data, CheckPositionBounds(length), length);
#endif
            }

Member Data Documentation

readonly byte [] Deveel.Data.Store.InMemoryStore.InMemoryArea.data

private

Definition at line 208 of file InMemoryStore.cs.

readonly int Deveel.Data.Store.InMemoryStore.InMemoryArea.endPosition

private

Definition at line 211 of file InMemoryStore.cs.

long Deveel.Data.Store.InMemoryStore.InMemoryArea.position

private

Definition at line 209 of file InMemoryStore.cs.

readonly int Deveel.Data.Store.InMemoryStore.InMemoryArea.startPosition

private

Definition at line 210 of file InMemoryStore.cs.

Property Documentation

int Deveel.Data.Store.InMemoryStore.InMemoryArea.Capacity

get

Definition at line 239 of file InMemoryStore.cs.

long Deveel.Data.Store.InMemoryStore.InMemoryArea.Id

getprivate set

Definition at line 224 of file InMemoryStore.cs.

bool Deveel.Data.Store.InMemoryStore.InMemoryArea.IsReadOnly

getprivate set

Definition at line 226 of file InMemoryStore.cs.

int Deveel.Data.Store.InMemoryStore.InMemoryArea.Length

getprivate set

Definition at line 243 of file InMemoryStore.cs.

long Deveel.Data.Store.InMemoryStore.InMemoryArea.Position

getset

Definition at line 228 of file InMemoryStore.cs.

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The documentation for this class was generated from the following file:

• /var/calculate/remote/distfiles/egit-src/deveeldb.git/src/deveeldb/Deveel.Data.Store/InMemoryStore.cs