ChangeLog

VERSION 2.7 - 6 Oct 2009
========================
2009-10 - Support Python2.6 and Debian's dist-packages install location
2008-11 - Make all thread-safe lock code conditional on SMACQ_CONFIG_THREAD_SAFE (improve performance on default single-thread builds)
2008-11 - Port to g++ version 4's (pedanticism about string contants)
2008-04 - "bytes" type now consolidated with "string" type; strings no longer NULL terminated
2008-04 - Deal with RHEL3 libdb_cxx naming issues

VERSION 2.6 - 23 Jan 2008
=========================
2006-09 - libtool -static linking happily links against installed dynamic libraries even if static is available.  We now use a wrapper script when building smacqq to prefer static libraries if present.
2006-09 - Define support added (the :- operator) 
2006-09 - Group by can now be used in pipes as well as FROMs
2006-09 - SmacqGraphContainer::newQuery replaced with SmacqGraphContainer::addQuery
2006-09 - Renamed SmacqGraph to SmacqGraphNode and SmacqGraphContainer to SmacqGraph
2007-06 - GDA 1.3 support added (with backwards compatiblity to 1.2)
2007-06 - Ubuntu 7.04 x86_64 support
2007-06 - gcc 4.1.2 support (more pedantic)
2007-10 - smacq module for python, new python module for smacq
2007-11 - RHEL 5 x86_64 support
2008-01 - Python <2.5 support
2008-01 - flowid module: bugfix
2008-01 - Don't warn (ala -q) when testing for existance of a field and it doesn't exist
2008-01 - Print column number in parse error messages
2008-01 - pcaplive: Support 64-bit timeval (RHEL5 x86-64)
2008-01 - python bindings: 
	- repr(), str() improvements
	- strings can contain NULLs now (DTS string obj lengths now exact)
	- RPM fixes

VERSION 2.5 - 29 August 2006
============================
2006-08 - print module: syslog options
2006-08 - ipproto type: fixed printing as text instead of numeric (e.g. tcp instead of 6), added double field
2006-08 - sort module now sorts numerically whenever possible, handles multiple dimensions better, -r for reverse order
2006-07 - new modules: take, deskew
2006-07 - Date/Time parsers now support Unix epoch time strings
2006-07 - Default time output format is now RFC 3339 (a profile of ISO 8601)
2006-06 - pcapwrite (via StrucioWriter.h):
	- now substitues %T in a filename with the current timestamp
	- can rotate files by current time as well as size
2006-06 - Switched from gmodule to ltdl
2006-06 - Experimental: Processing can now be multithreaded with multilpe worker threads (smacqq -c)
2006-06 - Less forceful inlining (optimize code size rather than function calls)
2005-05 - Make -j# works 

VERSION 2.4 - 3 May 2006
========================
2006-05 - bug fix: pcapfile and cflow not closing file descriptors
2006-04 - bug fix: memory usage was higher than necessary and output was delayed because scheduler was too greedy about producing when it could consume
2006-02 - bug fix: file is Greedy consumer
2006-02 - bug fix: file -F 

VERSION 2.3 - 22 February 2006
==============================
2006-02 - ethereal updates (use new libethereal)
2005-12 - ported to gcc 4.0
2005-11 - Gasnet/UPC support begun; distribute module added
2005-10	- bytes.string conversion now hex escapes unprintables
2005-10 - packet.payload had incorrect size
2005-09 - SmacqGraphContainer replaces SmacqGraph being a linked list
2005-09 - Datalog parser started

VERSION 2.2 - 1 September 2005
==============================
2005-08 - File input system:
	   - Input modules use SmacqFileModule() to insert "file" module
	   - "file" module generates stream of files (string objects)
	   - Modules use StrucioStream::MagicOpen() to process file objects
	   - Input modules then iterate over resulting StrucioStream object
	   - StrucioStream abstracts compressed files, tailing files, etc.
	   - StrucioStream supports bz2 files
2005-08 - When a module calls enqueue(), it surrenders control to scheduler
	   - Scheduler honors fact that modules aren't reentrant
2005-08 - SmacqGraph graphs are now reference counted
2005-05 - sqlquery module added
2005-03 - sort module added
2005-03 - const module: -t and -f options
2005-03 - ported to gcc 3.4
2005-03 - Query Parser:
           - Attribute functions like "f( g(), h() )" now instantiated in parallel so 
             "print sum(), count()" now works as expected.
           - Renaming of attribute functions with "AS" now requires each 
             attribute function to have -f option
2005-03 - print module: 
           - 2005-03: added --filefield option
           - 2005-03: added --binary option
           - 2005-02: added -f option for file output
           - 2005-01: --boulder (Boulder output format) added
           - 2004-12: '*' removed; specifying no fields now prints all fields
2005-02 - Scheduler: 
           - Default graphs are no longer associated with scheduler
           - Use explicit call to SmacqGraph::init() now
	   - seed_produce() added
           - decide() needs graph
2005-02 - Query optimization:
           - newQuery() now requires a scheduler instance as an argument
             in order instantiate modules & determine if queries are relational.
           - nonrelational portions of relational queries are now done early 
           - init() now always does optimization
           - Complete rewrite of dataflow optimization routines
2005-02 - uniqobj module added: replaces uniq -o and solves memory "leak"
2005-02 - private module added: private copy of fieldspace
2005-01 - SmacqModule::usesfield() wraps DTS::requirefield() but facilitates join optimization
2005-01 - timeval,time,ntime types: string parser now uses GNU get_date (like CVS dates)
2005-01 - sv4 type: start and stop times are now timevals instead of time_t
2004-12 - changes module added: detects(/filters for) changes in dynamics
2004-12 - bugfix: DtsObject reference counting now handles uses cycles (memory leak)
2004-12 - SmacqModule::enqueue() is now a callback to the scheduler:
           - SmacqModule::canproduce() and dequeue() are obsoleted
           - Module destructors can now enqueue()
           - Last-call semantics on produce() removed
           - Most modules no longer implement produce()
           - enqueue() object proceeds before object being consumed
2004-12 - smacq_getoptsbyname():
           - now prints help on error
           - now handles -xy as -x -y and not as --xy
2004-11 - smacqq: 
           - Added "-t" option to describe a type
           - Added "-q" option to avoid new warnings
2004-11 - Refactored smacq(1) and smacqq(1) manpages

VERSION 2.1 - 15 November 2004
==============================
2004-11 - Parsers now return better error messages
2004-11 - bugfix: Scheduler made producers greedy
2004-11 - HAVING clauses added to joins 
2004-10 - Joins added to query language
2004-10 - print "*" (like select * in SQL)
2004-10 - DtsObject::getfield(char*) method added. 
2004-10 - Python module <neale>
2004-09 - dts_field replaced with DtsField (an STL vector)

VERSION 2.0 - 6 September 2004
==============================
2004-08 - C API for modules removed
		- Modules are classes now too
2004-08 - Module output queueing is now part of base class
2004-08 - Finished rewrite of significant portions of code to C++
		- STL data-structures
		- Classes: DTS, DtsObject, IterativeScheduler, FieldVec, etc.
2004-08 - SmacqGraph.child is now a 2D array
2004-08 - Fixed "bag of tails" warning
2004-08 - getfield() objects keep a reference to their parent
2004-08 - Doxygen used for all API documentation now
2004-07 - DtsObject is an autopointer (code from Boost)

VERSION 1.9 - 7 September 2004
==============================
2004-05 - clock module only moves time forward, even if input is back and forth
2004-04 - New iterative scheduler is now the default; recursive deprecated
2004-04 - Added sqlinsert module using libgda
2004-02 - Added iplookup module & patricia code
2003-12 - print(-x)
2003-12 - Downstream filters (invariants) API added
2003-11	- Switched to autoconf/automake
2003-11 - Indexed file reader (.strucio_index files)
2003-11 - Strucio, structured I/O
2003-11 - disarm reader and sv4 type
2003-10	- Jenkins hash function
2003-09 - Fieldsets can specify a field that isn't always present
2003-09	- cmalloc added
2003-08 - cflow, clock modules
2003-08 - cflow, time, ntime types
2003-08 - Vector compare function
2003-08 - IoVec hashtable
2003-08 - groupby now supports partial refresh messages
2003-06 - NOT support
2003-06 - expression parser
2003-06 - OR by union rather than short-circuit
2003-05 - count module now behaves like SQL
2003-05 - Macintosh .app created
2003-05 - Added arithmetic expressions to Boolean expressions
2003-05 - Complex AND/OR Boolean expressions
2003-05 - DFA module added
2003-04 - Coroutine-based thread modules
2003-04 - Ethereal integration
2003-04 - Query parser understands pipes; commas optional
2003-04 - ISO build scripts
2003-03 - >=, <=, !=
2003-03 - RedHat 7.3 and 8 kludges--er support
2003-03 - Nested queries
2003-02 - ndjoin module
2003-02 - Modules declare their algebraic properties
2003-01 - const, mask, substr modules
2003-01 - ipproto type
2003-01 - Nested functions in comparisons
2003-01 - Began regression testing
2003-01 - Aggresive getfield() caching
2003-01 - Multi-headed graphs; smacqq -m option
2003-01 - getfield() returns an object rather than just data
2003-01 - Object free list
2003-01 - Nested field names
2003-01 - Query optimization (-O)
2002-12 - Boolean expression parsing for WHERE clauses (in "filter" module)
2002-12 - project, rename  modules (for relational algebra)
2002-12 - Query syntax parser
2002-11 - Ported to MacOS X
2002-11 - flowid, groupby, sum modules

VERSION 0.9
===========
 - Initial public release from LANL