Package com.pervasive.datarush.sequences

Provides classes and interfaces related to sequences of tokens.

See: Description

Interface Summary

Interface	Description
CloseableTokenAppendable	A TokenAppendable which has resources which need to be released when being disposed.
ElementComparator	An index-based comparator for a TokenSequence.
MutableTokenSequence	A mutable TokenSequence.
SeekableTokenValuedIterator	A TokenValuedIterator that is also seekable.
TokenAppendable	A sequence of data tokens to which additional tokens can be appended.
TokenSequence	A random-access, read-only view of a sequence of data tokens of homogeneous type.
TokenValuedIterator	Iterator over token values.

Class Summary

Class	Description
TokenSequences	Utilities for working with arrays of tokens.

Exception Summary

Exception	Description
IteratorEndOfDataException	Exception thrown if attempting to call TokenValuedIterator.stepNext() after it has already returned false.

Package com.pervasive.datarush.sequences Description

Provides classes and interfaces related to sequences of tokens. Sequences provide an efficient and convenient way for buffering tokens, compatible with other DataRush objects.

DataRush provides both dense and sparse implementations of sequences. The primary implementations store data densely, allocating space for each entry. However, for sequences which will mainly consist of zero values, the sparse implementation may be more efficient.