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/*
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 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
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 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * 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.html
 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
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 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
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 * Header, with the fields enclosed by brackets [] replaced by your own
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package com.sun.xml.ws.client;

import com.sun.xml.ws.api.WSBinding;
import com.sun.xml.ws.api.model.wsdl.WSDLPort;
import com.sun.xml.ws.api.pipe.Tube;
import com.sun.xml.ws.api.pipe.TubeCloner;
import com.sun.xml.ws.api.pipe.helper.AbstractTubeImpl;
import com.sun.xml.ws.api.server.SDDocument;
import com.sun.xml.ws.api.server.SDDocumentSource;
import com.sun.xml.ws.util.MetadataUtil;
import com.sun.xml.ws.util.pipe.AbstractSchemaValidationTube;
import com.sun.xml.ws.util.xml.MetadataDocument;
import org.w3c.dom.Document;
import org.xml.sax.SAXException;

import javax.xml.XMLConstants;
import javax.xml.namespace.QName;
import javax.xml.transform.Source;
import javax.xml.transform.dom.DOMSource;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;
import javax.xml.validation.Validator;
import javax.xml.ws.WebServiceException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.logging.Logger;

/**
 * {@link Tube} that does the schema validation on the client side.
 *
 * @author Jitendra Kotamraju
 */
public class ClientSchemaValidationTube extends AbstractSchemaValidationTube {

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

    private final Schema schema;
    private final Validator validator;
    private final boolean noValidation;
    private final WSDLPort port;

    public ClientSchemaValidationTube(WSBinding binding, WSDLPort port, Tube next) {
        super(binding, next);
        this.port = port;
        Source[] sources = null;
        if (port != null) {
            String primaryWsdl = port.getOwner().getParent().getLocation().getSystemId();
            sources = getSchemaSources(primaryWsdl);
            for(Source source : sources) {
                LOGGER.fine("Constructing validation Schema from = "+source.getSystemId());
                //printDOM((DOMSource)source);
            }
        }
        if (sources != null) {
            noValidation = false;
            SchemaFactory sf = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
            try {
                schema = sf.newSchema(sources);
            } catch(SAXException e) {
                throw new WebServiceException(e);
            }
            validator = schema.newValidator();
        } else {
            noValidation = true;
            schema = null;
            validator = null;
        }
    }

    private class MetadataResolverImpl implements MetadataUtil.MetadataResolver{

        Map docs = new HashMap();

        public SDDocument resolveEntity(String systemId) {
            SDDocument sdi = docs.get(systemId);
            if (sdi == null) {
                SDDocumentSource sds;
                try {
                    sds = SDDocumentSource.create(new URL(systemId));
                } catch(MalformedURLException e) {
                    throw new WebServiceException(e);
                }
                sdi = MetadataDocument.create(sds, new QName(""), new QName(""));
                docs.put(systemId, sdi);
            }
            return sdi;
        }
    }

    private Source[] getSchemaSources(String primary) {

        MetadataUtil.MetadataResolver mdresolver = new MetadataResolverImpl();
        Map docs = MetadataUtil.getMetadataClosure(primary, mdresolver, true);

        List list = new ArrayList();
        for(Map.Entry entry : docs.entrySet()) {
            SDDocument doc = entry.getValue();
            // Add all xsd:schema fragments from all WSDLs. That should form a closure of schemas.
            if (doc.isWSDL()) {
                Document dom = createDOM(doc);
                // Get xsd:schema node from WSDL's DOM
                addSchemaFragmentSource(dom, doc.getURL().toExternalForm(), list);
            } else if (doc.isSchema()) {
                // If there are multiple schemas with the same targetnamespace,
                // JAXP works only with the first one. Above, all schema fragments may have the same targetnamespace,
                // and that means it will not include all the schemas. Since we have a list of schemas, just add them.
                Document dom = createDOM(doc);
                list.add(new DOMSource(dom, doc.getURL().toExternalForm()));
            }
        }
        //addSchemaSource(list);
        return list.toArray(new Source[list.size()]) ;
    }

    protected Validator getValidator() {
        return validator;
    }

    protected boolean isNoValidation() {
        return noValidation;
    }

    protected ClientSchemaValidationTube(ClientSchemaValidationTube that, TubeCloner cloner) {
        super(that,cloner);
        this.port = that.port;
        this.schema = that.schema;
        this.validator = schema.newValidator();
        this.noValidation = that.noValidation;
    }

    public AbstractTubeImpl copy(TubeCloner cloner) {
        return new ClientSchemaValidationTube(this,cloner);
    }

}




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