Fixes #1556 [java] UseLocaleWithCaseConversions does not works with ResultSet (false negative)

pmd-java/src/main/resources/rulesets/java/design.xml

@@ -723,12 +723,18 @@ have unusual conventions, i.e. Turkish.
           <property name="xpath">
             <value>
                 <![CDATA[
-//PrimaryExpression
+//PrimaryExpression[not(PrimaryPrefix/Name[ends-with(@Image, 'toHexString')])]
-[PrimaryPrefix/Name
+[
- [ends-with(@Image, 'toLowerCase') or ends-with(@Image,
+PrimaryPrefix
-'toUpperCase')]
+[following-sibling::PrimarySuffix[position() = 1]/Arguments[@ArgumentCount=0]]
+/Name[ends-with(@Image, 'toLowerCase') or ends-with(@Image, 'toUpperCase')]
+
+or
+
+PrimarySuffix
+[following-sibling::PrimarySuffix[position() = 1]/Arguments[@ArgumentCount=0]]
+[ends-with(@Image, 'toLowerCase') or ends-with(@Image, 'toUpperCase')]
 ]
-[PrimarySuffix[position() = 1]/Arguments[@ArgumentCount=0]]
 ]]>
             </value>
           </property>

pmd-java/src/test/resources/net/sourceforge/pmd/lang/java/rule/design/xml/UseLocaleWithCaseConversions.xml

@@ -56,6 +56,22 @@ public class Foo {
     String x = "hello world";
     return x.toUpperCase(Locale.GERMANY).trim();
   }
+}
+     ]]></code>
+    </test-code>
+
+    <test-code>
+        <description>#1556 [java] UseLocaleWithCaseConversions does not works with `ResultSet` (false negative)</description>
+        <expected-problems>1</expected-problems>
+        <code><![CDATA[
+import java.sql.*;
+
+final class Test {
+  private Test() { }
+
+  public static String foo(ResultSet r) throws SQLException {
+    return r.getString("bar").toLowerCase();
+  }
 }
         ]]></code>
     </test-code>

src/site/markdown/overview/changelog.md

@@ -35,6 +35,7 @@ This is a bug fixing release, no major changes were introduced.
 
 *   java-design
     *   [#1552](https://sourceforge.net/p/pmd/bugs/1552/): \[java] MissingBreakInSwitch - False positive for continue
+    *   [#1556](https://sourceforge.net/p/pmd/bugs/1556/): \[java] UseLocaleWithCaseConversions does not works with `ResultSet` (false negative)
     *   [#177](https://github.com/pmd/pmd/issues/177): \[java] SingularField with lambdas as final fields
 *   java-imports
     *   [#1546](https://sourceforge.net/p/pmd/bugs/1546/): \[java] UnnecessaryFullyQualifiedNameRule doesn't take into consideration conflict resolution