[MATH-195] Inconsistencies in the Exception hierarchy

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.1, 1.2, 2.0
• Fix Version/s: 3.0
• Assignee: Gilles Sadowski
• Reporter: Thomas Chust
• Created: 20/Feb/08 18:55
• Updated: 23/Jul/12 23:24
• Resolved: 07/Sep/11 18:55

Description

I think there are some inconsistencies in the hierarchy of exceptions used by the Commons Math library which could easily be fixed:

• org.apache.commons.math.linear.MatrixIndexException should really be a subclass of
  java.lang.IndexOutOfBoundsException.

• Either org.apache.commons.math.linear.InvalidMatrixException should be checked or
  org.apache.commons.math.random.NotPositiveDefiniteMatrixException and
  org.apache.commons.math.geometry.NotARotationMatrixException should be unchecked, but in any case the latter two
  should be subclasses of the former. An unchecked InvalidMatrixException should probably be a subclass of
  java.lang.ArithmeticException while a checked InvalidMatrixException should be a subclass of
  org.apache.commons.math.MathException.