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package com.sun.xml.ws.mex.client;

import java.net.URI;
import com.sun.xml.ws.mex.client.schema.Metadata;
import com.sun.xml.ws.api.wsdl.parser.MetaDataResolver;
import com.sun.xml.ws.api.wsdl.parser.ServiceDescriptor;

/**
 * Plugin to wsimport for mex/ws-transfer requests.
 */
public class MetadataResolverImpl extends MetaDataResolver {
    
    MetadataClient mClient;
    
    protected MetadataResolverImpl() {
        mClient = new MetadataClient();
    }
    
    /**
     * This method is called by JAX-WS code to retrieve metadata.
     * The contract is that, if there are problems trying to get the
     * metadata with mex, this method returns null and the JAX-WS
     * code can try retrieving it another way (for instance, with
     * a ?wsdl http GET call).
     */
    public ServiceDescriptor resolve(final URI location) {
        final Metadata mData = mClient.retrieveMetadata(location.toString());
        if (mData == null) {
            return null;
        }
        return new ServiceDescriptorImpl(mData);
    }
    
}