fix SONAR-1766 - A warning is generated when the user tries to import a PMD configuration file with contains XPath rules. Those rules must be defined through the user web interface.

plugins/sonar-pmd-plugin/pmd-result.xml

@@ -1,3 +1,3 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<pmd version="4.2.5" timestamp="2010-09-15T23:40:19.345">
+<pmd version="4.2.5" timestamp="2010-09-15T23:57:48.955">
 </pmd>

plugins/sonar-pmd-plugin/src/main/java/org/sonar/plugins/pmd/PmdProfileImporter.java

@@ -58,6 +58,16 @@ public class PmdProfileImporter extends ProfileImporter {
   protected RulesProfile createRuleProfile(PmdRuleset pmdRuleset, ValidationMessages messages) {
     RulesProfile profile = RulesProfile.create();
     for (PmdRule pmdRule : pmdRuleset.getPmdRules()) {
+      if (PmdConstants.XPATH_CLASS.equals(pmdRule.getClazz())) {
+        messages.addWarningText("PMD XPath rule '" + pmdRule.getName()
+            + "' can't be imported automatically. The rule must be created manually through the Sonar web interface.");
+        continue;
+      }
+      if (pmdRule.getRef() == null) {
+        messages.addWarningText("A PMD rule without 'ref' attribute can't be imported. see '" + pmdRule.getClazz()
+            + "'");
+        continue;
+      }
       Rule rule = ruleFinder.find(RuleQuery.create().withRepositoryKey(PmdConstants.REPOSITORY_KEY).withConfigKey(pmdRule.getRef()));
       if (rule != null) {
         ActiveRule activeRule = profile.activateRule(rule, PmdLevelUtils.fromLevel(pmdRule.getPriority()));
@@ -86,6 +96,9 @@ public class PmdProfileImporter extends ProfileImporter {
       PmdRuleset pmdResultset = new PmdRuleset();
       for (Element eltRule : getChildren(eltResultset, "rule", namespace)) {
         PmdRule pmdRule = new PmdRule(eltRule.getAttributeValue("ref"));
+        pmdRule.setClazz(eltRule.getAttributeValue("class"));
+        pmdRule.setName(eltRule.getAttributeValue("name"));
+        pmdRule.setMessage(eltRule.getAttributeValue("message"));
         parsePmdPriority(eltRule, pmdRule, namespace);
         parsePmdProperties(eltRule, pmdRule, namespace);
         pmdResultset.addRule(pmdRule);

plugins/sonar-pmd-plugin/src/test/java/org/sonar/plugins/pmd/PmdProfileImporterTest.java

@@ -74,6 +74,15 @@ public class PmdProfileImporterTest {
     assertThat(messages.hasErrors(), is(false));
   }
 
+  @Test
+  public void testImportingProfileWithXPathRule() {
+    Reader reader = new StringReader(TestUtils.getResourceContent("/org/sonar/plugins/pmd/export_xpath_rules.xml"));
+    RulesProfile profile = importer.importProfile(reader, messages);
+
+    assertThat(profile.getActiveRules().size(), is(0));
+    assertThat(messages.hasWarnings(), is(true));
+  }
+
   @Test
   public void testImportingParameters() {
     Reader reader = new StringReader(TestUtils.getResourceContent("/org/sonar/plugins/pmd/simple.xml"));