diff --git a/src/main/java/jp/sf/fess/job/CrawlJob.java b/src/main/java/jp/sf/fess/job/CrawlJob.java
index 346ce07ca..d5f0998ab 100644
--- a/src/main/java/jp/sf/fess/job/CrawlJob.java
+++ b/src/main/java/jp/sf/fess/job/CrawlJob.java
@@ -40,12 +40,22 @@ public class CrawlJob {
     public String execute(final JobExecutor jobExecutor,
             final String[] webConfigIds, final String[] fileConfigIds,
             final String[] dataConfigIds, final String operation) {
-        final StringBuilder resultBuf = new StringBuilder();
 
         // create session id
         final SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss");
         final String sessionId = sdf.format(new Date());
 
+        return execute(jobExecutor, sessionId, webConfigIds, fileConfigIds,
+                dataConfigIds, operation);
+
+    }
+
+    public String execute(final JobExecutor jobExecutor,
+            final String sessionId, final String[] webConfigIds,
+            final String[] fileConfigIds, final String[] dataConfigIds,
+            final String operation) {
+        final StringBuilder resultBuf = new StringBuilder();
+
         if (jobExecutor != null) {
             jobExecutor.addShutdownListener(new ShutdownListener() {
                 @Override
@@ -70,6 +80,7 @@ public class CrawlJob {
         }
 
         return resultBuf.toString();
+
     }
 
 }