fix the row count refresh issue

main/src/com/google/refine/ProjectManager.java

@@ -44,7 +44,11 @@ import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
 
+import org.apache.commons.lang.exception.ExceptionUtils;
 import org.apache.tools.tar.TarOutputStream;
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -370,13 +374,92 @@ public abstract class ProjectManager {
         }
         return -1;
     }
+    
+    /**
+     * A valid user meta data definition should have name and display property
+     * @param placeHolderJsonObj
+     * @return
+     */
+    private boolean isValidUserMetadataDefinition(JSONObject placeHolderJsonObj) {
+        return (placeHolderJsonObj != null &&
+                placeHolderJsonObj.has("name") &&
+            placeHolderJsonObj.has("display"));
+    }
+    
+    public void mergeEmptyUserMetadata(ProjectMetadata metadata) {
+        if (metadata == null)
+            return;
+        
+        // place holder
+        JSONArray userMetadataPreference = null;
+        // actual metadata for project
+        JSONArray jsonObjArray = metadata.getUserMetadata();
+        
+        // honor the meta data preference
+        for (int index = 0; index < jsonObjArray.length(); index++) {
+            try {
+                JSONObject projectMetaJsonObj = jsonObjArray.getJSONObject(index);
+                projectMetaJsonObj.put("display", false);
+            } catch (JSONException e) {
+                logger.error(ExceptionUtils.getFullStackTrace(e));
+            }
+        }
+        
+        try {
+            String userMeta = (String)_preferenceStore.get(PreferenceStore.USER_METADATA_KEY);
+            if (userMeta == null)
+                return;
+            userMetadataPreference = new JSONArray(userMeta);
+        } catch (JSONException e1) {
+            logger.error(ExceptionUtils.getFullStackTrace(e1));
+        }
+        
+        if (userMetadataPreference == null) {
+            logger.warn("wrong definition of userMetadata format. Please use form [{\"name\": \"client name\", \"display\":true}, {\"name\": \"progress\", \"display\":false}]");
+            return;
+        }
+        
+        for (int index = 0; index < userMetadataPreference.length(); index++) {
+            try {
+                boolean found = false;
+                JSONObject placeHolderJsonObj = userMetadataPreference.getJSONObject(index);
+                
+                if (!isValidUserMetadataDefinition(placeHolderJsonObj)) {
+                    logger.warn("Skipped invalid user metadata definition" + placeHolderJsonObj.toString());
+                    continue;
+                }
 
+                for (int i = 0; i < jsonObjArray.length(); i++) {
+                    JSONObject jsonObj = jsonObjArray.getJSONObject(i);
+                    if (jsonObj.getString("name").equals(placeHolderJsonObj.getString("name"))) {
+                        found = true;
+                        jsonObj.put("display", placeHolderJsonObj.get("display"));
+                        break;
+                    }
+                }
+
+                if (!found) {
+                    placeHolderJsonObj.put("value", "");
+                    metadata.getUserMetadata().put(placeHolderJsonObj);
+                    logger.info("Put the placeholder {} for project {}",
+                            placeHolderJsonObj.getString("name"),
+                            metadata.getName());
+                } 
+            } catch (JSONException e) {
+                logger.warn("Exception when mergeEmptyUserMetadata",e);
+            }
+        }
+    }
 
     /**
-     * Gets all the project Metadata currently held in memory
+     * Gets all the project Metadata currently held in memory.
      * @return
      */
     public Map<Long, ProjectMetadata> getAllProjectMetadata() {
+        for(Project project : _projects.values()) {
+            mergeEmptyUserMetadata(project.getMetadata());
+        }
+            
         return _projectsMetadata;
     }
 

main/src/com/google/refine/commands/row/GetRowsCommand.java

@@ -178,6 +178,9 @@ public class GetRowsCommand extends Command {
             if (callback != null) {
                 writer.write(")");
             }
+            
+            // metadata refresh for row mode and record mode
+            project.getMetadata().setRowCount(project.rows.size());
         } catch (Exception e) {
             respondException(response, e);
         }

main/src/com/google/refine/io/FileProjectManager.java

@@ -44,7 +44,6 @@ import java.io.OutputStream;
 import java.util.Properties;
 import java.util.zip.GZIPInputStream;
 
-import org.apache.commons.lang.exception.ExceptionUtils;
 import org.apache.tools.tar.TarEntry;
 import org.apache.tools.tar.TarInputStream;
 import org.apache.tools.tar.TarOutputStream;
@@ -60,7 +59,6 @@ import com.google.refine.ProjectManager;
 import com.google.refine.ProjectMetadata;
 import com.google.refine.history.HistoryEntryManager;
 import com.google.refine.model.Project;
-import com.google.refine.preference.PreferenceStore;
 import com.google.refine.preference.TopList;
 
 
@@ -403,72 +401,6 @@ public class FileProjectManager extends ProjectManager {
         return found;
     }
 
-    public void mergeEmptyUserMetadata(ProjectMetadata metadata) {
-        if (metadata == null)
-            return;
-        
-        // place holder
-        JSONArray userMetadataPreference = null;
-        // actual metadata for project
-        JSONArray jsonObjArray = metadata.getUserMetadata();
-        
-        try {
-            String userMeta = (String)_preferenceStore.get(PreferenceStore.USER_METADATA_KEY);
-            if (userMeta == null)
-                return;
-            userMetadataPreference = new JSONArray(userMeta);
-        } catch (JSONException e1) {
-            logger.error(ExceptionUtils.getFullStackTrace(e1));
-        }
-        
-        if (userMetadataPreference == null) {
-            logger.warn("wrong definition of userMetadata format. Please use form [{\"name\": \"client name\", \"display\":true}, {\"name\": \"progress\", \"display\":false}]");
-            return;
-        }
-        
-        for (int index = 0; index < userMetadataPreference.length(); index++) {
-            try {
-                boolean found = false;
-                JSONObject placeHolderJsonObj = userMetadataPreference.getJSONObject(index);
-                
-                if (!isValidUserMetadataDefinition(placeHolderJsonObj)) {
-                    logger.warn("Skipped invalid user metadata definition" + placeHolderJsonObj.toString());
-                    continue;
-                }
-
-                for (int i = 0; i < jsonObjArray.length(); i++) {
-                    JSONObject jsonObj = jsonObjArray.getJSONObject(i);
-                    if (jsonObj.getString("name").equals(placeHolderJsonObj.getString("name"))) {
-                        found = true;
-                        jsonObj.put("display", placeHolderJsonObj.get("display"));
-                        break;
-                    }
-                }
-
-                if (!found) {
-                    placeHolderJsonObj.put("value", "");
-                    metadata.getUserMetadata().put(placeHolderJsonObj);
-                    logger.info("Put the placeholder {} for project {}",
-                            placeHolderJsonObj.getString("name"),
-                            metadata.getName());
-                } 
-            } catch (JSONException e) {
-                logger.warn("Exception when mergeEmptyUserMetadata",e);
-            }
-        }
-    }
-    
-    /**
-     * A valid user meta data definition should have name and display property
-     * @param placeHolderJsonObj
-     * @return
-     */
-    private boolean isValidUserMetadataDefinition(JSONObject placeHolderJsonObj) {
-        return (placeHolderJsonObj != null &&
-                placeHolderJsonObj.has("name") &&
-            placeHolderJsonObj.has("display"));
-    }
-
     protected void recover() {
         boolean recovered = false;
         for (File file : _workspaceDir.listFiles()) {