C-JDBC: org.objectweb.cjdbc.controller.backend.rewriting.SimpleRewritingRule Class Reference

Constructor & Destructor Documentation

org.objectweb.cjdbc.controller.backend.rewriting.SimpleRewritingRule.SimpleRewritingRule	(	String	queryPattern,
		String	rewrite,
		boolean	caseSensitive,
		boolean	stopOnMatch
	)

Creates a new SimpleRewritingRule.java object

Parameters:

	queryPattern	SQL pattern to match
	rewrite	rewritten SQL query
	caseSensitive	true if matching is case sensitive
	stopOnMatch	true if rewriting must stop after this rule if it matches.

Definition at line 47 of file SimpleRewritingRule.java.

00049   {
00050     super(queryPattern, caseSensitive ? rewrite : rewrite.toLowerCase(),
00051         caseSensitive, stopOnMatch);
00052     queryPatternLength = queryPattern.length();
00053   }

Member Function Documentation

String org.objectweb.cjdbc.controller.backend.rewriting.SimpleRewritingRule.rewrite ( String sqlQuery ) [virtual]

See also:: org.objectweb.cjdbc.controller.backend.rewriting.AbstractRewritingRule.rewrite(java.lang.String)

Implements org.objectweb.cjdbc.controller.backend.rewriting.AbstractRewritingRule.

Definition at line 58 of file SimpleRewritingRule.java.

References org.objectweb.cjdbc.controller.backend.rewriting.SimpleRewritingRule.rewrite().

Referenced by org.objectweb.cjdbc.controller.backend.rewriting.SimpleRewritingRule.rewrite().

00059   {
00060     // Check first if it is a match
00061     int start;
00062     if (isCaseSensitive)
00063       start = sqlQuery.indexOf(queryPattern);
00064     else
00065       start = sqlQuery.toLowerCase().indexOf(queryPattern.toLowerCase());
00066     if (start == -1)
00067     { // No match
00068       hasMatched = false;
00069       return sqlQuery;
00070     }
00071     // Match, rewrite the query
00072     hasMatched = true;
00073     if (start == 0)
00074     {
00075       if (queryPatternLength < sqlQuery.length())
00076         // Match at the beginning of the pattern
00077         return rewrite + sqlQuery.substring(queryPatternLength);
00078       else
00079         // The query was exactly the pattern
00080         return rewrite;
00081     }
00082     else
00083     {
00084       if (start + queryPatternLength < sqlQuery.length())
00085         return sqlQuery.substring(0, start) + rewrite
00086             + sqlQuery.substring(start + queryPatternLength);
00087       else
00088         // Match at the end of the pattern
00089         return sqlQuery.substring(0, start) + rewrite;
00090     }
00091   }

Generated on Mon Apr 11 22:03:27 2005 for C-JDBC by

1.3.9.1


Public Member Functions
	SimpleRewritingRule (String queryPattern, String rewrite, boolean caseSensitive, boolean stopOnMatch)
String	rewrite (String sqlQuery)

org.objectweb.cjdbc.controller.backend.rewriting.SimpleRewritingRule Class Reference

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation