org.datacleaner.beans.dategap.DateGapTextRenderer Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of DataCleaner-date-gap
There is a newer version: 6.0.0
/**
 * DataCleaner (community edition)
 * Copyright (C) 2014 Neopost - Customer Information Management
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * 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.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 */
package org.datacleaner.beans.dategap;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Set;
import java.util.SortedSet;

import org.datacleaner.api.RendererBean;
import org.datacleaner.result.renderer.AbstractRenderer;
import org.datacleaner.result.renderer.TextRenderingFormat;
import org.datacleaner.util.StringUtils;

@RendererBean(TextRenderingFormat.class)
public class DateGapTextRenderer extends AbstractRenderer {

    private SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");

    @Override
    public String render(final DateGapAnalyzerResult result) {
        final Set names = result.getGroupNames();
        if (names.isEmpty()) {
            return "No timelines recorded";
        }

        final StringBuilder sb = new StringBuilder();
        for (final String name : names) {
            if (!StringUtils.isNullOrEmpty(name)) {
                sb.append("Timeline recorded for '");
                sb.append(name);
                sb.append('\'');
                sb.append('\n');
            }

            final SortedSet gaps = result.getGaps(name);
            if (gaps.isEmpty()) {
                sb.append(" - no time gaps!\n");
            } else {
                for (final TimeInterval timeInterval : gaps) {
                    sb.append(" - time gap: ");
                    sb.append(format(timeInterval));
                    sb.append('\n');
                }
            }

            final SortedSet overlaps = result.getOverlaps(name);
            if (overlaps.isEmpty()) {
                sb.append(" - no time overlaps!\n");
            } else {
                for (final TimeInterval timeInterval : overlaps) {
                    sb.append(" - time overlap: ");
                    sb.append(format(timeInterval));
                    sb.append('\n');
                }
            }
        }
        return sb.toString();
    }

    private String format(final TimeInterval interval) {
        final Date from = new Date(interval.getFrom());
        final Date to = new Date(interval.getTo());
        return df.format(from) + " to " + df.format(to);
    }
}