resources.report.rules.pmd.CheckResultSet.html Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of sanity4j Show documentation

Sanity4J was created to simplify running multiple static code analysis tools on the Java projects. It provides a single entry point to run all the selected tools and produce a consolidated report, which presents all findings in an easily accessible manner.

There is a newer version: 1.8.2

Show newest version



CheckResultSet

CheckResultSet

Always check the return values of navigation methods (next, previous, first, last) of a ResultSet. If the value return is ‘false’, it should be handled properly.
This rule is defined by the following Java class: net.sourceforge.pmd.lang.java.rule.basic.CheckResultSetRule
Example(s):


            
Statement stat = conn.createStatement();
ResultSet rst = stat.executeQuery("SELECT name FROM person");
rst.next(); 	// what if it returns false? bad form
String firstName = rst.getString(1);

Statement stat = conn.createStatement();
ResultSet rst = stat.executeQuery("SELECT name FROM person");
if (rst.next()) {	// result is properly examined and used
    String firstName = rst.getString(1);
	} else  {
		// handle missing data
}