/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.syncope.core.provisioning.java.job.report;

import java.util.concurrent.atomic.AtomicReference;
import org.apache.syncope.core.persistence.api.dao.Reportlet;
import org.apache.syncope.common.lib.report.ReportletConf;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.transaction.annotation.Transactional;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.AttributesImpl;

public abstract class AbstractReportlet implements Reportlet {

    protected static final Logger LOG = LoggerFactory.getLogger(AbstractReportlet.class);

    protected abstract void doExtract(ReportletConf conf, ContentHandler handler, AtomicReference<String> status)
            throws SAXException;

    @Override
    @Transactional(readOnly = true)
    public void extract(
            final ReportletConf conf,
            final ContentHandler handler,
            final AtomicReference<String> status)
            throws SAXException {

        if (conf == null) {
            throw new ReportException(new IllegalArgumentException("No configuration provided"));
        }

        AttributesImpl atts = new AttributesImpl();
        atts.addAttribute("", "", ReportXMLConst.ATTR_NAME, ReportXMLConst.XSD_STRING, conf.getName());
        atts.addAttribute("", "", ReportXMLConst.ATTR_CLASS, ReportXMLConst.XSD_STRING, getClass().getName());
        handler.startElement("", "", ReportXMLConst.ELEMENT_REPORTLET, atts);

        doExtract(conf, handler, status);

        handler.endElement("", "", ReportXMLConst.ELEMENT_REPORTLET);
    }
}
