Split up IndexInput and IndexOutput into DataInput and DataOutput
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Key: LUCENE-2126
URL: https://issues.apache.org/jira/browse/LUCENE-2126
Project: Lucene - Java
Issue Type: Improvement
Affects Versions: Flex Branch
Reporter: Michael Busch
Assignee: Michael Busch
Priority: Minor
Fix For: Flex Branch
I'd like to introduce the two new classes DataInput and DataOutput
that contain all methods from IndexInput and IndexOutput that actually
decode or encode data, such as readByte()/writeByte(),
readVInt()/writeVInt().
Methods like getFilePointer(), seek(), close(), etc., which are not
related to data encoding, but to files as input/output source stay in
IndexInput/IndexOutput.
This patch also changes ByteSliceReader/ByteSliceWriter to extend
DataInput/DataOutput. Previously ByteSliceReader implemented the
methods that stay in IndexInput by throwing RuntimeExceptions.
See also LUCENE-2125.
All tests pass.
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