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OpenL Tablets 4.0.1 is a major release introducing key WebStudio features and language semantics changes.

New Features

WebStudio now includes:

  • Unit Tests — run test tables and view results interactively.
  • Run — execute rules directly from the browser.
  • Trace — step through rule execution to inspect intermediate values.
  • Explanation — view explanations of how results were calculated.
  • Advanced Search — search across rules projects with extended criteria.

Improvements

  • WebStudio now displays Excel tables using Excel formats for numbers, dates, and borders. Some compatibility differences between Excel and HTML rendering may remain.
  • Tomcat default session timeout is configured for 30 minutes in conf/web.xml. WebStudio displays a message and restarts the web application after a session timeout.
  • The semantics of the == operator for String values are changed: when both operands are non-null, equals() is used for comparison instead of reference equality. Null values are still handled correctly.
  • Business View and Developer View display modes are available. WebStudio defaults to Business Mode; switch via the “Web Studio” text in the top menu.