### Eclipse Workspace Patch 1.0
#P perforce-plugin
diff --git src/main/java/hudson/plugins/perforce/PerforceSCM.java src/main/java/hudson/plugins/perforce/PerforceSCM.java
index 19cb273..d1fb5c8 100644
--- src/main/java/hudson/plugins/perforce/PerforceSCM.java
+++ src/main/java/hudson/plugins/perforce/PerforceSCM.java
@@ -102,6 +102,11 @@
     String p4Tool;
 
     /**
+     * Build one changelist only, after the last one.
+     */
+    boolean oneChangelistOnly = false;
+    
+    /**
      * Use ClientSpec text file from depot to prepare the workspace view
      */
     boolean useClientSpec = false;
@@ -291,6 +296,7 @@
             String p4Charset,
             String p4CommandCharset,
             String clientOwner,
+            boolean oneChangelistOnly,
             boolean updateCounterValue,
             boolean forceSync,
             boolean dontUpdateServer,
@@ -347,6 +353,7 @@
             this.p4SysDrive = p4SysDrive.trim();
         }
 
+        this.oneChangelistOnly = oneChangelistOnly;
         this.lineEndValue = lineEndValue;
         this.forceSync = forceSync;
         this.dontUpdateServer = dontUpdateServer;
@@ -792,7 +799,7 @@
                 "P4DISABLESYNCONLY", build, this.disableSyncOnly);
         disableSyncOnly = overrideWithBooleanParameter(
                 "P4DISABLESYNC", build, this.disableSyncOnly);
-
+        
         // If we're doing a matrix build, we should always force sync.
         if ((Object)build instanceof MatrixBuild || (Object)build instanceof MatrixRun) {
             if (!alwaysForceSync && !wipeBeforeBuild)
@@ -904,14 +911,18 @@
                 } else {
                     //use the latest submitted change from workspace, or depot
                     try {
-                        List<Integer> workspaceChanges = depot.getChanges().getChangeNumbers(p4WorkspacePath, 0, 1);
-                        if (workspaceChanges != null && workspaceChanges.size() > 0) {
-                            newestChange = workspaceChanges.get(0);
-                        } else {
+                    	List<Integer> workspaceChanges = depot.getChanges().getChangeNumbersTo(p4WorkspacePath, lastChange+1);
+                    	log.println("workspaceChanges == " + workspaceChanges);
+                    	
+                    	if (workspaceChanges == null || workspaceChanges.size() == 0) {
                             List<Integer> depotChanges = depot.getChanges().getChangeNumbers("//...", 0, 1);
                             if (depotChanges != null && depotChanges.size() > 0) {
                                 newestChange = depotChanges.get(0);
                             }
+                        } else if (oneChangelistOnly) {
+                        	newestChange = workspaceChanges.get(workspaceChanges.size()-1);
+                        } else {
+                        	newestChange = workspaceChanges.get(0);
                         }
                     } catch (PerforceException e) {
                         //fall back onto 'change' counter value
@@ -2667,6 +2678,13 @@
     public boolean isUpdateView() {
         return updateView;
     }
+    
+    /**
+     * @return  True if we are progressing with one changlelist at a time
+     */
+    public boolean isOneChangelistOnly() {
+        return oneChangelistOnly;
+    }
 
     /**
      * @return  True if we are performing a one-time force sync
@@ -2697,12 +2715,19 @@
     }
 
     /**
+     * @param onlyOne True to perform a one changelist build at a time
+     */
+    public void setOneChangelistOnly(boolean onlyOne) {
+        this.oneChangelistOnly = onlyOne;
+    }
+    
+    /**
      * @param force True to perform a one time force sync, false to perform normal sync
      */
     public void setForceSync(boolean force) {
         this.forceSync = force;
     }
-
+    
     /**
      * @param force True to perform a one time force sync, false to perform normal sync
      */
diff --git src/main/resources/hudson/plugins/perforce/PerforceSCM/config.jelly src/main/resources/hudson/plugins/perforce/PerforceSCM/config.jelly
index 3aca752..d242c57 100644
--- src/main/resources/hudson/plugins/perforce/PerforceSCM/config.jelly
+++ src/main/resources/hudson/plugins/perforce/PerforceSCM/config.jelly
@@ -83,6 +83,10 @@
       </select>
     </f:entry>
     
+    <f:entry title="One Changelist Only" help="/plugin/perforce/help/oneChangelistOnly.html">
+      <f:checkbox field="oneChangelistOnly" value="False" />
+    </f:entry>
+    
     <f:optionalBlock name="p4.cleanWorkspace" title="Clean Workspace Before Each Build" help="/plugin/perforce/help/cleanBeforeBuild.html" checked="${instance.cleanWorkspaceBeforeBuild}">
         <f:entry><table width="100%">
         <f:radioBlock title="Full Wipe" name="p4.cleanType" value="wipe" id="p4.wipeClean" checked="${instance.wipeBeforeBuild}" help="/plugin/perforce/help/wipeBeforeBuild.html"/>
diff --git src/main/webapp/help/oneChangelistOnly.html src/main/webapp/help/oneChangelistOnly.html
new file mode 100644
index 0000000..e188549
--- /dev/null
+++ src/main/webapp/help/oneChangelistOnly.html
@@ -0,0 +1,9 @@
+<div>
+  <p>
+    <b>One Changelist Only</b>: Synct to next changelist after the one that was
+    build last time.
+  </p>
+  <p><b>Important Note:</b> Option useful for fast builds, but better not enable it 
+    for long running jobs with lots of commits.
+  </p>
+</div>
diff --git src/test/java/hudson/plugins/perforce/PerforceSCMTest.java src/test/java/hudson/plugins/perforce/PerforceSCMTest.java
index cf7d18f..da203c9 100644
--- src/test/java/hudson/plugins/perforce/PerforceSCMTest.java
+++ src/test/java/hudson/plugins/perforce/PerforceSCMTest.java
@@ -28,7 +28,7 @@
         P4Web browser = new P4Web(new URL("http://localhost/"));
         PerforceSCM scm = new PerforceSCM(
         		"user", "pass", "client", "port", "", "exe", "sysRoot",
-        		"sysDrive", "label", "counter", "upstreamProject", "shared", "charset", "charset2", "user", false, true, true, true, true, true, false,
+        		"sysDrive", "label", "counter", "upstreamProject", "shared", "charset", "charset2", "user", false, false, true, true, true, true, true, false,
                         false, true, false, false, false, "${basename}", 0, -1, browser, "exclude_user", "exclude_file", true);
         scm.setProjectPath("path");
         project.setScm(scm);
@@ -49,7 +49,7 @@
         P4Web browser = new P4Web(new URL("http://localhost/"));
         PerforceSCM scm = new PerforceSCM(
                         "user", "pass", "client", "port", "", "exe", "",
-                        "", "label", "counter", "upstreamProject", "shared", "charset", "charset2", "user", false, true, true, true, true, true, false,
+                        "", "label", "counter", "upstreamProject", "shared", "charset", "charset2", "user", false, false, true, true, true, true, true, false,
                         false, true, false, false, false, "${basename}", 0, -1, browser, "exclude_user", "exclude_file", true);
         assertEquals("", scm.getP4SysDrive());
         assertEquals("", scm.getP4SysRoot());
@@ -69,7 +69,7 @@
         P4Web browser = new P4Web(new URL("http://localhost/"));
         PerforceSCM scm = new PerforceSCM(
         		"user", "pass", "client", "port", "", "exe", "sysRoot",
-        		"sysDrive", "label", "counter", "upstreamProject", "shared", "charset", "charset2", "user", false, true, true, true, true, true, false,
+        		"sysDrive", "label", "counter", "upstreamProject", "shared", "charset", "charset2", "user", false, false, true, true, true, true, true, false,
                         false, true, false, false, false, "${basename}", 0, -1, browser, "exclude_user", "exclude_file", true);
         scm.setP4Stream("stream");
         scm.setUseStreamDepot(true);
@@ -96,7 +96,7 @@
         String password = "pass";
         PerforceSCM scm = new PerforceSCM(
         		"user", password, "client", "port", "", "test_installation", "sysRoot",
-        		"sysDrive", "label", "counter", "upstreamProject", "shared", "charset", "charset2", "user", false, true, true, true, true, true, false,
+        		"sysDrive", "label", "counter", "upstreamProject", "shared", "charset", "charset2", "user", false, false, true, true, true, true, true, false,
                         false, true, false, false, false, "${basename}", 0, -1, browser, "exclude_user", "exclude_file", true);
         scm.setProjectPath("path");
         project.setScm(scm);
@@ -125,7 +125,7 @@
         String password = "pass";
         PerforceSCM scm = new PerforceSCM(
         		"user", password, "client", "port", "", "test_installation", "sysRoot",
-        		"sysDrive", "label", "counter", "upstreamProject", "shared", "charset", "charset2", "user", false, true, true, true, true, true, false,
+        		"sysDrive", "label", "counter", "upstreamProject", "shared", "charset", "charset2", "user", false, false, true, true, true, true, true, false,
                         false, true, false, false, false, "${basename}", 0, -1, browser, "exclude_user", "exclude_file", true);
         scm.setProjectPath("path");
         project.setScm(scm);
@@ -143,7 +143,7 @@
         String password = "pass";
         PerforceSCM scm = new PerforceSCM(
         		"user", password, "client", "port", "", "test_installation", "sysRoot",
-        		"sysDrive", "label", "counter", "upstreamProject", "shared", "charset", "charset2", "user", false, true, true, true, true, true, false,
+        		"sysDrive", "label", "counter", "upstreamProject", "shared", "charset", "charset2", "user", false, false, true, true, true, true, true, false,
                         false, true, false, false, false, "${basename}", 0, -1, browser, "exclude_user", "exclude_file", true);
         scm.setProjectPath("path");
         project.setScm(scm);
@@ -325,7 +325,7 @@
         String password = "pass";
         PerforceSCM scm = new PerforceSCM(
                 "user", password, "client", "port", "", "test_installation", "sysRoot",
-                "sysDrive", "label", "counter", "upstreamProject", "shared", "charset", "charset2", "user", false, true, true, true, true, true, false,
+                "sysDrive", "label", "counter", "upstreamProject", "shared", "charset", "charset2", "user", false, false, true, true, true, true, true, false,
                         false, false, true, false, false, "${basename}", 0, -1, browser, "exclude_user", "exclude_file", true);
         scm.setP4Stream("stream");
         project.setScm(scm);
@@ -363,7 +363,7 @@
         FreeStyleProject upstreamProject = createFreeStyleProject();
         PerforceSCM upstreamScm = new PerforceSCM(
                 "user", "pass", "client", "port", "", "test_installation", "sysRoot",
-                "sysDrive", null, null, null, "shared", "charset", "charset2", "user", false, true, true, true, true, true, false,
+                "sysDrive", null, null, null, "shared", "charset", "charset2", "user", false, false, true, true, true, true, true, false,
                         false, true, false, false, false, "${basename}", 0, -1, browser, "exclude_user", "exclude_file", true);
         upstreamScm.setProjectPath("path");
         upstreamProject.setScm(upstreamScm);
@@ -372,7 +372,7 @@
         String oldName = upstreamProject.getName();
         PerforceSCM downstreamScm = new PerforceSCM(
                 "user", "pass", "client", "port", "", "test_installation", "sysRoot",
-                "sysDrive", null, null, oldName, "shared", "charset", "charset2", "user", false, true, true, true, true, true, false,
+                "sysDrive", null, null, oldName, "shared", "charset", "charset2", "user", false, false, true, true, true, true, true, false,
                         false, true, false, false, false, "${basename}", 0, -1, browser, "exclude_user", "exclude_file", true);
         downstreamScm.setProjectPath("path");
         downstreamProject.setScm(downstreamScm);