OpenCDISC Validator version 1.2 (released 24-January-2011)

API
- Added DataDetails class to provide more detailed record-level metadata (enhancement)
- Added EntityDetails class to provide more consolidated source-level metadata (enhancement)
- Added overwrite capabilities to ReportOtions (enhancement)
- Deprecated DataIdentity in favor of the new DataDetails and EntityDetails classes (maintenance)
- Deprecated Severity across the API with the expectation that it may be phased out in the future (maintenance)

Engine
- Added support for a limited set of functions in expressions; see change comment in Configuration section (enhancement)
- Added PreparedQuery class to pre-parse the clauses of Metadata and Lookup rules, avoiding the significant overhead involved in doing this on a per-row basis (enhancement)
- Added support for fuzzy equality, useful for comparing a variable against the results of a division; see change in Configuration section (enhancement)
- Added reference to CDISC-provided XSL at the top of generated define.xml documents (enhancement)
- Updated configuration parser to take source metadata into account when performing rule replications (enhancement)
- Updated configuration parser to defer rule creation until later in the load process, reducing some upfront overhead (enhancement)
- Updated magic variable parsing code to be more powerful and flexible; see change comments in Configuration section (enhancement)
- Updated SasTransportDataSource parser rounding to use a more efficient math-based method (enhancement)
- Updated DataCache to use a customized BitSet in an effort to reduce memory consumption of lookups, and improve union/intersect performance (enhancement)
- Updated Excel report to drop Severity column if Severity is not included in the recorded Message objects (enhancement)
- Updated Excel report to defer creation of heavy objects until the end, in an effort to reduce in-process memory demands (enhancement)
- Updated DataEntry compareTo method and implicit type determination process to avoid unnecessary overhead (enhancement)
- Updated codebase to externalize more strings (maintenance)
- Fixed issue in DataCache where OR clauses in Lookup rule Where clauses weren't functioning correctly (bug fix)
- Fixed issues where file handles were being opened needlessly and left unclosed throughout the process (bug fix)
- Fixed issues where large numeric values would fail string-based tests due to scientific notation (bug fix)

Configuration
- Added support for chained properties on magic variables via the $ separator (enhancement)
- Added support for backreferences via %Variable.#% (enhancement)
- Updated magic variable name clause to support multiple clauses via ; (enhancement)
- Updated magic variable name clause to support negative clauses via leading ! (enhancement)
- Updated magic variable name clause to support more refined group via #/@/_ with optional * (enhancement)
- Updated Metadata rule to only fire on From failure when a Variable clause isn't present (enhancement)
- Updated prototypes to match on any key variable (enhancement)

GUI
- Added support for ADaM and SEND as options in the Standard drop-down box (enhancement)
- Added support for tab-delimited files through the use of \t in the Delimiter field (enhancement / bug fix)
- Added post-generation step to copy over CDISC-provided define XSL file from Validator folder to define output location (enhancement)
- Fixed issue where overflows in the Excel report would throw an exception instead of providing an informative error message (bug fix)
- Removed HTML report option from report options drop down temporarily due to issues with HTML generation process (maintenance / bug fix)


OpenCDISC Validator version 1.1 (released 02-June-2010)

API
- Added Settings class to API to expose internal configurable properties (enhancement)
- Added lib/properties/settings.properties to define settings externally (enhancement)
- Added MessageMetrics, making it possible to get information about messages generated during validation (enhancement)
- Updated SimpleMetrics to make it thread-safe (enhancement)

Engine
- Added multithreading support (enhancement)
- Added support for showing additional variables in report messages; see change comment in Configuration section (enhancement)
- Added support for optional expression variables, which receive a null DataEntry when not present; see change comment in Configuration section (enhancement / bug fix)
- Added support for checks against a global metadata table; see change comment in Configuration section (enhancement)
- Added support for defining rule SD0061 natively in configuration; see change comment in Configuration section (enhancement)
- Added support for accepting Lookup Where clause failure as a positive condition, preventing error generation; see change Comment in Configuration section (enhancement / bug fix)
- Updated scripting environment to custom solution to reduce overhead caused by BeanShell (enhancement)
- Updated XmlConfigurationParser to receive cues about when to drop rules based on codelist presence, for Controlled Terminology; see change comment in Configuration section (enhancement)
- Updated implicit type determination methodology in DataEntry to improve performance / reduce blocking condition scenario in multithreading mode (enhancement / bug fix)
- Fixed NullPointerException when SimpleAttribute had been assigned with a null value in DefineDocumentGenerator (bug fix)
- Fixed situation where DefineDocumentGenerator would create ItemDefs with DataType="datetime" and blank Length attribute (bug fix)
- Fixed SasTransportDataSource so it uses the correct encoding when converting the byte stream to Java strings (bug fix)
- Fixed SasTransportDataSource so it handles short observations at the end of the file correctly (bug fix)
- Removed some unnecessary code fragments and text entries (maintenance)

Configuration
- Added Display attribute on rule definition elements to select additional variables for viewing in the report (enhancement)
- Added Optional attribute on scriptable rule definition elements to select optional expression variables (enhancement / bug fix)
- Added GLOBAL ItemGroupDef to define rules to be run against the global metadata table (enhancement)
- Added ActiveUnless attribute on rule definition elements to drop the rule when a certain magic variable condition is true; currently only %Variables[VAR].Define.WithCodeList% (enhancement)
- Added support for %Domains.Define% in Terms attribute for rule definition elements in the GLOBAL ItemGroupDef (enhancement)
- Added support for WhereFailure="Ignore" on lookup rule definitions to avoid failing lookup if Where condition fails (enhancement / bug fix)

GUI
- Added support for multiple progress update threads


OpenCDISC Validator version 1.0.1 (released 17-March-2010)

Engine
- Added relative path resolution support for environments where the current working directory is not set correctly (bug fix)
- Added support in SasTransportDataSource for header record padding other than ASCII spaces (bug fix)
- Fixed NullPointerException when an invalid codelist was referenced in the codelist template in DefineDocumentGenerator (bug fix)

GUI
- Updated location of interface.xml in distribution package to lib/properties/interface.xml (maintenance)
- Fixed condition where selected values were not persisted while toggling between specifications (bug fix)