Encountered NPE in QueryRewriter with the following stacktrace:

java.lang.ArrayIndexOutOfBoundsException: 1
at com.metamatrix.query.rewriter.QueryRewriter.simplifyParseFormatFunction(QueryRewriter.java:1690)
at com.metamatrix.query.rewriter.QueryRewriter.simplifyWithInverse(QueryRewriter.java:1368)
at com.metamatrix.query.rewriter.QueryRewriter.rewriteCriteria(QueryRewriter.java:1314)
at com.metamatrix.query.rewriter.QueryRewriter.rewriteCriteria(QueryRewriter.java:1112)
at com.metamatrix.query.rewriter.QueryRewriter.rewriteCriteria(QueryRewriter.java:1095)
at com.metamatrix.query.rewriter.QueryRewriter.rewriteCriteria(QueryRewriter.java:1091)
at com.metamatrix.query.optimizer.relational.rules.FrameUtil.convertCriteria(FrameUtil.java:537)

The issue was traced back to usage of a UDF named 'parsedate_'. The QueryRewriter makes assumption about function starting with the word 'parse'. see next comment for more info.