de.micromata.genome.gwiki.model.matcher.GWikiChildMatcher.java Source code

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Here is the source code for de.micromata.genome.gwiki.model.matcher.GWikiChildMatcher.java

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//
// Copyright (C) 2010-2016 Roger Rene Kommer & Micromata GmbH
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//  http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

package de.micromata.genome.gwiki.model.matcher;

import org.apache.commons.lang3.StringUtils;

import de.micromata.genome.gwiki.model.GWikiElementInfo;
import de.micromata.genome.gwiki.page.GWikiContext;

/**
 * Matcher to find child.
 * 
 * @author Roger Rene Kommer (r.kommer@micromata.de)
 * 
 */
public class GWikiChildMatcher extends GWikiElementMatcherBase {

    private static final long serialVersionUID = 5914342408207823066L;

    private String pageId;

    /**
     * minLevel == 0 matches this
     */
    private int minLevel = 0;

    private int maxLevel = 100;

    public GWikiChildMatcher(GWikiContext wikiContext, String pageId, int minLevel, int maxLevel) {
        super(wikiContext);
        this.pageId = pageId;
        this.maxLevel = maxLevel;
        this.minLevel = minLevel;
    }

    public boolean isChildOf(GWikiElementInfo first, GWikiElementInfo other, int curLevel) {
        if (curLevel > minLevel || curLevel < maxLevel) {
            return false;
        }
        if (first.getId().equals(other.getId()) == true) {
            return true;
        }
        if (StringUtils.isEmpty(first.getParentId()) == true) {
            return false;
        }
        GWikiElementInfo pei = wikiContext.getWikiWeb().findElementInfo(first.getParentId());
        if (pei == null) {
            return false;
        }
        return isChildOf(pei, other, ++curLevel);
    }

    public boolean match(GWikiElementInfo ei) {
        if (pageId == null) {
            return true;
        }

        GWikiElementInfo tei = wikiContext.getWikiWeb().findElementInfo(pageId);
        if (tei == null) {
            return false;
        }

        return isChildOf(ei, tei, 0);

    }

}