Added getColumns

git-svn-id: https://svn.d4science.research-infrastructures.eu/gcube/trunk/portlets/user/tabular-data-gwt-service@90119 82a268e6-3cf1-43bd-a215-b396298e98cf

src/main/java/org/gcube/portlets/user/td/gwtservice/client/rpc/TDGWTService.java

@@ -148,6 +148,15 @@ public interface TDGWTService extends RemoteService {
 	 */
 	public ArrayList<ColumnData> getColumns() throws TDGWTServiceException;
 
+	/**
+	 * Retrieves the list of columns in the table provided by trId
+	 * 
+	 * @return
+	 * @throws TDGWTServiceException
+	 */
+	public ArrayList<ColumnData> getColumns(TRId trId) throws TDGWTServiceException;
+
+	
 	/**
 	 * Remove Tabular Resource From Service
 	 * 

src/main/java/org/gcube/portlets/user/td/gwtservice/client/rpc/TDGWTServiceAsync.java

@@ -62,6 +62,8 @@ public interface TDGWTServiceAsync {
     
     void getColumns(AsyncCallback<ArrayList<ColumnData>> callback);
     
+    void getColumns(TRId trId, AsyncCallback<ArrayList<ColumnData>> callback);
+    
     void removeTabularResource(TRId trId, AsyncCallback<Void> callback);
     
     //Open

src/main/java/org/gcube/portlets/user/td/gwtservice/server/TDGWTServiceImpl.java

@@ -327,6 +327,75 @@ public class TDGWTServiceImpl extends RemoteServiceServlet implements
 		}
 	}
 
+	/**
+	 * 
+	 * {@inheritDoc}
+	 */
+	public ArrayList<ColumnData> getColumns(TRId trId) throws TDGWTServiceException {
+		try {
+			HttpSession session = this.getThreadLocalRequest().getSession();
+			ASLSession aslSession = SessionUtil.getAslSession(session);
+
+			AuthorizationProvider.instance.set(new AuthorizationToken(
+					aslSession.getUsername()));
+			TabularDataService service = TabularDataServiceFactory.getService();
+
+			Table table = service.getTable(new TableId(Long
+					.valueOf(trId.getTableId())));
+
+			ArrayList<ColumnData> columns = new ArrayList<ColumnData>();
+
+			List<Column> cols = table.getColumns();
+			int i = 0;
+			for (Column c : cols) {
+				if (c.getColumnType() instanceof IdColumnType) {
+
+				} else {
+					ColumnData cData = new ColumnData();
+					cData.setId(Integer.toString(i));
+					cData.setName(c.getName());
+					cData.setTypeCode(c.getColumnType().getCode());
+					cData.setTypeName(c.getColumnType().getName());
+					NamesMetadata labelsMetadata = null;
+					try {
+						labelsMetadata = c.getMetadata(NamesMetadata.class);
+					} catch (NoSuchMetadataException e) {
+						logger.debug("labelMetadata: NoSuchMetadataException "
+								+ e.getLocalizedMessage());
+					}
+
+					if (labelsMetadata == null) {
+						cData.setLabel("nolabel");
+						logger.debug("LabelsMetadata no labels");
+					} else {
+						LocalizedText cl = null;
+						cl = labelsMetadata.getTextWithLocale("en");
+						if (cl == null) {
+							cData.setLabel("nolabel");
+							logger.debug("ColumnLabel no label in en");
+						} else {
+							cData.setLabel(cl.getValue());
+							logger.debug("Column Set Label: " + cl.getValue());
+						}
+					}
+					cData.setTrId(trId);
+					columns.add(cData);
+					i++;
+				}
+			}
+
+			return columns;
+
+		} catch (Exception e) {
+			logger.error(
+					"Error setting TabResource parameter: "
+							+ e.getLocalizedMessage(), e);
+			throw new TDGWTServiceException(
+					"Error setting TabResource parameter: "
+							+ e.getLocalizedMessage());
+		}
+	}
+	
 	/**
 	 * 
 	 * {@inheritDoc}