prevent exception on Site Crawl if no start url is given

htroot/Crawler_p.java

@@ -368,8 +368,15 @@ public class Crawler_p {
                     prop.putHTML("info_error", e.getMessage());
                 } 
                 
+                boolean hasCrawlstartDataOK = true;
+                // check crawlurl was given in sitecrawl
+                if ("url".equals(crawlingMode) && rootURLs.size() == 0) hasCrawlstartDataOK = false;
+
                 // prepare a new crawling profile
-                final CrawlProfile profile = new CrawlProfile(
+                final CrawlProfile profile;
+                byte[] handle;
+                if (hasCrawlstartDataOK) {
+                    profile = new CrawlProfile(
                             crawlName,
                             newcrawlingMustMatch,
                             newcrawlingMustNotMatch,
@@ -393,12 +400,14 @@ public class Crawler_p {
                             cachePolicy,
                             collection,
                             agentName);
-                byte[] handle = ASCII.getBytes(profile.handle());
+                    handle = ASCII.getBytes(profile.handle());
 
                     // before we fire up a new crawl, we make sure that another crawl with the same name is not running
                     sb.crawler.removeActive(handle);
                     sb.crawler.removePassive(handle);
-                try {sb.crawlQueues.noticeURL.removeByProfileHandle(profile.handle(), 10000);} catch (final SpaceExceededException e1) {}
+                    try {
+                        sb.crawlQueues.noticeURL.removeByProfileHandle(profile.handle(), 10000);
+                    } catch (final SpaceExceededException e1) { }
 
                     // delete all error urls for that domain
                     Set<String> hosthashes = new HashSet<String>();
@@ -408,6 +417,10 @@ public class Crawler_p {
                     }
                     sb.crawlQueues.errorURL.removeHosts(hosthashes);
                     sb.index.fulltext().commit(true);
+                } else {
+                    profile = null;
+                    handle = null;
+                }
 
                 // start the crawl
                 if ("url".equals(crawlingMode)) {