Package org.yamcs.parameterarchive

Interface Summary

Interface	Description
SegmentIterator.SimpleValueConsumer
ValueConsumer
ValueSegment

Class Summary

Class	Description
BackFiller	Back-fills the parameter archive by triggering replays: - either regularly scheduled replays - or monitor data streams (tm, param) and keep track of which segments have to be rebuild
BaseSegment	Base class for all segments of values, timestamps or ParameterStatus
BinaryValueSegment
BitBuffer	BitBuffer allows to write individual bits or group of bits into a buffer backed by an long[] array.
BooleanValueSegment	Boolean value sgement uses BitSet to represent the boolean values as a set of bits
DoubleValueSegment
FastPFORFactory	Because the FastPFOR codec uses quite some memory, we use this factory to limit the number of created objects to one per thread
FloatCompressor	Implements the floating point compression scheme described here: http://www.vldb.org/pvldb/vol8/p1816-teller.pdf
FloatValueSegment
GenericValueSegment	GenericValueSegment keeps an ArrayList of Values.
IntValueSegment	32 bit integers encoded as deltas of deltas (good if the values are relatively constant or in increasing order)
LongValueSegment
MultiParameterDataRetrieval
MultipleParameterValueRequest
ObjectSegment<E>	Segment for all non primitive types.
ParameterArchive
ParameterArchiveMaintenanceRestHandler	Provides some maintenance operations on the parameter archive
ParameterGroupIdDb	Stores a map between List<parameter_id> and ParameterGroup_id.
ParameterIdDb	Stores a map between (parameter_fqn, type) and parameter_id type is a 32 bit assigned corresponding (engType, rawType) engType and rawType are one of the types from protobuf Value.Type - we use the numbers assuming that no more than 2^15 will ever exist.
ParameterIdDb.ParameterId
ParameterIdValueList	A list of parametersIds with values all having the same timestamp
ParameterStatusSegment
ParametersValueRequest
ParameterValueArray	an array of values for one parameter
PartitionIterator	Iterates over the segments of one partition for a parameter_id, ParameterGroup_id, between a start and stop
PGSegment	Parameter Group segment - keeps references to Time and Value segments for a given parameter group and segment.
RealtimeArchiveFiller
SegmentEncoderDecoder
SegmentIterator
SingleParameterDataRetrieval
SingleParameterValueRequest
SortedTimeSegment	TimeSegment stores timestamps relative to a t0.
StringValueSegment
TimedValue

Exception Summary

Exception	Description
ConsumerAbortException	Use this in the consumers to signal that they don't want anymore data.
ParameterArchiveException