package org.wamblee.xmlrouter.impl;

import java.util.logging.Level;
import java.util.logging.Logger;

import javax.xml.transform.dom.DOMSource;

import org.wamblee.xmlrouter.common.Id;
import org.wamblee.xmlrouter.config.Filter;

public class RobustFilter implements Filter {

    private static final Logger LOGGER = Logger.getLogger(RobustFilter.class
        .getName());

    private Id<Filter> id;
    private Filter filter;

    public RobustFilter(Id<Filter> aId, Filter aFilter) {
        id = aId;
        filter = aFilter;
    }

    @Override
    public boolean isAllowed(String aDocumentType, DOMSource aSource) {
        try {
            return filter.isAllowed(aDocumentType, aSource);
        } catch (Exception e) {
            LOGGER.log(Level.WARNING, "Filter " + id +
                " threw exception, assuming filter returns true", e);
            return true;
        }
    }
}