FilterQueryParser.java

package folioxml.xml;

public class FilterQueryParser {

    public FilterQueryParser() {

    }

    public IFilter parse(String query) {
        //TODO: make a real parser...
        assert (query.indexOf(" ") < 0); //No whitespace allowed.

        //Parse basic element.class, .class, or element
        String elementName = query;
        String className = "";
        if (query.indexOf(".") > -1) {
            elementName = query.substring(query.indexOf("."));
            className = query.substring(query.indexOf(".") + 1);
        }

        if (className.length() > 0 && elementName.length() > 0) return new NodeFilter(elementName, "class", className);
        if (className.length() > 0) return new NodeFilter("class", className);
        if (elementName.length() > 0) return new NodeFilter(elementName);
        assert (false);
        return null;
    }

}