InStream Data Type

Version: Available or changed with runtime version 1.0.

Is a generic stream object that you can use to read from or write to files and BLOBs. You can define the internal structure of a stream as a flat stream of bytes. You can assign one stream to another. Reading from and writing to a stream occurs sequentially.

Instance methods

The following methods are available on instances of the InStream data type.

Method name	Description
EOS()	Indicates whether an input stream has reached End of Stream (EOS).
Length()	Gets the stream length.
Position([BigInteger])	Get or set the current stream position in seekable streams.
Read(var Boolean [, Integer])	Reads a specified number of bytes from an InStream object. Data is read in binary format.
Read(var Byte [, Integer])	Reads a specified number of bytes from an InStream object. Data is read in binary format.
Read(var Char [, Integer])	Reads a specified number of bytes from an InStream object. Data is read in binary format.
Read(var Integer [, Integer])	Reads a specified number of bytes from an InStream object. Data is read in binary format.
Read(var BigInteger [, Integer])	Reads a specified number of bytes from an InStream object. Data is read in binary format.
Read(var Decimal [, Integer])	Reads a specified number of bytes from an InStream object. Data is read in binary format.
Read(var Guid [, Integer])	Reads a specified number of bytes from an InStream object. Data is read in binary format.
Read(var Text [, Integer])	Reads a specified number of bytes from an InStream object. Data is read in binary format.
Read(var Any [, Integer])	Reads a specified number of bytes from an InStream object. Data is read in binary format.
ReadText(var Text [, Integer])	Reads text from an InStream object.
ResetPosition()	Resets the stream position on an InStream object.

See Also

Get Started with AL
Developing Extensions