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package org.apache.cayenne.configuration.xml;

import org.apache.cayenne.configuration.DataChannelDescriptor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.xml.sax.Attributes;
import org.xml.sax.ContentHandler;

/**
 * @since 4.1
 */
public final class DataChannelHandler extends VersionAwareHandler {

    private static final Logger logger = LoggerFactory.getLogger(XMLDataChannelDescriptorLoader.class);

    static final String DOMAIN_TAG = "domain";

    private XMLDataChannelDescriptorLoader xmlDataChannelDescriptorLoader;
    DataChannelDescriptor descriptor;

    public DataChannelHandler(XMLDataChannelDescriptorLoader xmlDataChannelDescriptorLoader, DataChannelDescriptor dataChannelDescriptor, LoaderContext loaderContext) {
        super(loaderContext, DOMAIN_TAG);
        this.xmlDataChannelDescriptorLoader = xmlDataChannelDescriptorLoader;
        this.descriptor = dataChannelDescriptor;
        setTargetNamespace(DataChannelDescriptor.SCHEMA_XSD);
    }

    @Override
    protected ContentHandler createChildTagHandler(String namespaceURI, String localName,
                                                   String name, Attributes attributes) {

        if (localName.equals(DOMAIN_TAG)) {
            return new DataChannelChildrenHandler(xmlDataChannelDescriptorLoader, this);
        }

        logger.info(unexpectedTagMessage(localName, DOMAIN_TAG));
        return super.createChildTagHandler(namespaceURI, localName, name, attributes);
    }
}