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/*
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 *
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 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
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package org.glassfish.webservices;

import javax.xml.namespace.QName;

import javax.xml.rpc.handler.GenericHandler;
import javax.xml.rpc.handler.MessageContext;

import java.util.logging.Logger;
import java.util.logging.Level;
import org.glassfish.api.invocation.InvocationManager;

import com.sun.enterprise.web.WebComponentInvocation;

import com.sun.xml.rpc.server.http.Implementor;
import com.sun.xml.rpc.server.http.MessageContextProperties;

/**
 * This handler is inserted first in the handler chain for an
 * servlet web service endpoint.  
 *
 * @author Kenneth Saks
 */
public class ServletPreHandler extends GenericHandler {

    private static Logger logger = LogUtils.getLogger();
    private final WsUtil wsUtil = new WsUtil();

    public ServletPreHandler() {}

    @Override
    public QName[] getHeaders() {
        return new QName[0];
    }

    @Override
    public boolean handleRequest(MessageContext context) {
        WebComponentInvocation inv = null;

        try {
            WebServiceContractImpl wscImpl = WebServiceContractImpl.getInstance();
            InvocationManager invManager = wscImpl.getInvocationManager();
            inv = WebComponentInvocation.class.cast(invManager.getCurrentInvocation());
            com.sun.xml.rpc.spi.runtime.Tie tie =
                    (com.sun.xml.rpc.spi.runtime.Tie) inv.getWebServiceTie();
            if (tie == null) {
                Implementor implementor = (Implementor)
                        context.getProperty(MessageContextProperties.IMPLEMENTOR);
                tie = implementor.getTie();
                inv.setWebServiceTie(tie);
            }
            inv.setWebServiceMethod(wsUtil.getInvMethod(tie, context));

        } catch(Exception e) {
            logger.log(Level.WARNING, LogUtils.PRE_WEBHANDLER_ERROR, e.toString());
            wsUtil.throwSOAPFaultException(e.getMessage(), context);
        }
        return true;
    }
}