Package emissary.parser

Parsers deal with data ingested into the system and provide memory efficient ways of decomposing it into logical sessions. The parsers here are fairly simple but provide an important framework for more advanced parsers that live in other packages.

Class Summary

Class	Description
DataByteArraySlicer
DataByteBufferSlicer
DataIdentifier	A simple base class for doing data type identification This simple implementation can only match constant strings against data.
DecomposedSession	Representation of a fully built session with metadata, header, footer, classification, initial forms, and data
FillingNIOParser	Encapsulate the behavior necessary to slide a window through a channel and parse sessions from it. nextChunkOrDie will load the next region.
InputSession	Detailed session information as it is parsed This class just records offsets and length of various things using lists of PositionRecord.
NIOSessionParser	Provide a basic NIO-based session parser that reads data in chunks from the underlying channel.
ParserFactory	Provide a factory for getting the proper type of input parser Provide the implementing classes for that match the configured Data Identifier Engine in PARSER_NIO_IMPL_[type] variants if available.
PositionRecord	Record offset and length of something in an array
SessionParser	Base for all session parsers returned from ParserFactory
SessionProducer	This class takes a SessionParser and produces data objects from the sessions coming out of the session parser.
SimpleNioParser	A very simple minded parser implementation that assumes each input channel is one session.

Exception Summary

Exception	Description
ParserEOFException	Exception thrown when parsing has fully completed
ParserException	Exceptions thrown during input parsing
ParserNextChunkException	Exception thrown when parsing needs a new block of data