org.pentaho.mantle.client.commands.RefreshMetaDataCommand.java Source code

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Here is the source code for org.pentaho.mantle.client.commands.RefreshMetaDataCommand.java

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/*!
 * This program is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
 * Foundation.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
 * or from the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Lesser General Public License for more details.
 *
 * Copyright (c) 2002-2013 Pentaho Corporation..  All rights reserved.
 */

package org.pentaho.mantle.client.commands;

import com.google.gwt.core.client.GWT;
import com.google.gwt.http.client.Request;
import com.google.gwt.http.client.RequestBuilder;
import com.google.gwt.http.client.RequestCallback;
import com.google.gwt.http.client.RequestException;
import com.google.gwt.http.client.Response;
import com.google.gwt.user.client.Window;
import org.pentaho.gwt.widgets.client.dialogs.MessageDialogBox;
import org.pentaho.mantle.client.messages.Messages;

public class RefreshMetaDataCommand extends AbstractCommand {

    public RefreshMetaDataCommand() {
    }

    protected void performOperation() {
        final String url = GWT.getHostPageBaseURL() + "api/system/refresh/metadata"; //$NON-NLS-1$
        RequestBuilder requestBuilder = new RequestBuilder(RequestBuilder.GET, url);
        requestBuilder.setHeader("accept", "text/plain");
        requestBuilder.setHeader("If-Modified-Since", "01 Jan 1970 00:00:00 GMT");
        try {
            requestBuilder.sendRequest(null, new RequestCallback() {

                public void onError(Request request, Throwable exception) {
                    // showError(exception);
                }

                public void onResponseReceived(Request request, Response response) {
                    MessageDialogBox dialogBox = new MessageDialogBox(Messages.getString("info"), //$NON-NLS-1$
                            response.getText(), true, false, true);
                    dialogBox.center();
                }
            });
        } catch (RequestException e) {
            Window.alert(e.getMessage());
            // showError(e);
        }
    }

    protected void performOperation(final boolean feedback) {
        // do nothing
    }
}