webquerysymbolsresulthighlighter.java

esri的ArcGIS Server超级学习模板程序（for java）

package com.esri.solutions.jitk.web.data.results.highlight;

import com.esri.adf.web.data.query.QueryResult;
import com.esri.adf.web.data.query.WebQuery;

import org.apache.log4j.Logger;

import java.util.List;


public class WebQuerySymbolsResultHighlighter implements IResultHighlighter {
    private static Logger _logger = Logger.getLogger(WebQuerySymbolsResultHighlighter.class);
    private boolean _clearPrevious = true;

    public void setClearPreviousResults(boolean clear) {
        _clearPrevious = clear;
    }

    public boolean getClearPreviousResults() {
        return _clearPrevious;
    }

    public void highlightResults(List<QueryResult> results) {
        if (results == null) {
            throw new NullPointerException("Results cannot be null");
        }

        if (results.size() == 0) {
            _logger.warn("QueryResult list is empty");

            return;
        }

        QueryResult qResult = results.get(0);

        WebQuery webQuery = qResult.getWebQuery();

        if (_clearPrevious) {
            webQuery.clearGraphics();
        }

        for (QueryResult qr : results) {
            qr.highlight();
        }
    }
}