pentaho/pentaho-kettle — pull request #649 by hudak (2014-07-09 14:58:06+00:00)
Title: [PDI-12565] LIKE pattern matching of meta

1. When querying tables and columns in Thin JDBC meta, use SQL-LIKE pattern matching.
* '_' wildcards a single character.
* '%' wildcards any number of characters.
* Pattern is converted to a regular expression. All regex characters in pattern are escaped before matching.

2. getString should always returns String
* if value is set, casting value to string
* null is returned if column value is not set