org.netxms.ui.eclipse.datacollection.views.helpers.DciComparator.java Source code

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Here is the source code for org.netxms.ui.eclipse.datacollection.views.helpers.DciComparator.java

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/**
 * NetXMS - open source network management system
 * Copyright (C) 2003-2013 Victor Kirhenshtein
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
package org.netxms.ui.eclipse.datacollection.views.helpers;

import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerComparator;
import org.eclipse.swt.SWT;
import org.netxms.client.datacollection.DataCollectionObject;
import org.netxms.ui.eclipse.datacollection.views.DataCollectionEditor;
import org.netxms.ui.eclipse.widgets.SortableTableViewer;

/**
 * DCI comparator
 */
public class DciComparator extends ViewerComparator {
    private DciLabelProvider labelProvider;

    /**
     * Default constructor
     */
    public DciComparator(DciLabelProvider labelProvider) {
        this.labelProvider = labelProvider;
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.viewers.ViewerComparator#compare(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
     */
    @Override
    public int compare(Viewer viewer, Object e1, Object e2) {
        int result;

        DataCollectionObject dci1 = (DataCollectionObject) e1;
        DataCollectionObject dci2 = (DataCollectionObject) e2;

        int column = (Integer) ((SortableTableViewer) viewer).getTable().getSortColumn().getData("ID"); //$NON-NLS-1$
        switch (column) {
        case DataCollectionEditor.COLUMN_ID:
            result = (int) (dci1.getId() - dci2.getId());
            break;
        case DataCollectionEditor.COLUMN_DESCRIPTION:
            result = dci1.getDescription().compareToIgnoreCase(dci2.getDescription());
            break;
        case DataCollectionEditor.COLUMN_PARAMETER:
            result = dci1.getName().compareToIgnoreCase(dci2.getName());
            break;
        case DataCollectionEditor.COLUMN_INTERVAL:
            result = (int) (dci1.getComparablePollingInterval() - dci2.getComparablePollingInterval());
            break;
        case DataCollectionEditor.COLUMN_RETENTION:
            result = (int) (dci1.getComparableRetentionTime() - dci2.getComparableRetentionTime());
            break;
        case DataCollectionEditor.COLUMN_ORIGIN:
        case DataCollectionEditor.COLUMN_DATATYPE:
        case DataCollectionEditor.COLUMN_STATUS:
        case DataCollectionEditor.COLUMN_TEMPLATE:
            final String text1 = labelProvider.getColumnText(e1, column);
            final String text2 = labelProvider.getColumnText(e2, column);
            if (text1 != null && text2 != null) {
                result = text1.compareToIgnoreCase(text2);
            } else {
                if (text1 == null) {
                    if (text2 == null) {
                        result = 0;
                    } else {
                        result = -1;
                    }
                } else {
                    result = 1;
                }
            }
            break;
        default:
            result = 0;
            break;
        }
        return (((SortableTableViewer) viewer).getTable().getSortDirection() == SWT.UP) ? result : -result;
    }
}