Examples of org.eclipse.persistence.oxm.NamespaceResolver$IteratorEnumeration

org.eclipse.persistence.oxm.NamespaceResolver

It is common for an XML document to include one or more namespaces. TopLink supports this using its NamespaceResolver. The namespace resolver maintains pairs of namespace prefixes and URIs. TopLink uses these prefixes in conjunction with the XPath statements you specify on EIS mappings to XML records and XML mappings.
Although TopLink captures namespace prefixes in the XPath statements for mappings (if applicable), the input document is not required to use the same namespace prefixes. TopLink will use the namespace prefixes specified in the mapping when creating new documents.
Code Sample
NamespaceResolver resolver = new NamespaceResolver(); resolver.put( "ns", "urn:namespace-example"); XMLDescriptor descriptor = new XMLDescriptor(); descriptor.setJavaClass(Customer.class); descriptor.setDefaultRootElement("ns:customer"); descriptor.setNamespaceResolver(resolver); XMLDirectMapping mapping = new XMLDirectMapping(); mapping.setAttributeName("id"); mapping.setXPath("ns:id/text()"); descriptor.addMapping(mapping); @see org.eclipse.persistence.oxm.XMLDescriptor @see org.eclipse.persistence.eis.EISDescriptor

    /**
      * INTERNAL:
      * Add the given namespace uri and prefix to the global namespace resolver.
      */
    public String addNamespace(String prefix, String uri) {
        NamespaceResolver nr = getNamespaceResolver();


        String existingPrefixForURI = nr.resolveNamespaceURI(uri);
        if ((existingPrefixForURI != null) && !existingPrefixForURI.equals("")) {
            //if there is already a prefix for this uri return that one
            return existingPrefixForURI;
        }
        String existingUriForPrefix = nr.resolveNamespacePrefix(prefix);
        if (existingUriForPrefix == null) {
            //prefix is not already used and uri doesnt have a prefix so use the prefix passed in
            nr.put(prefix, uri);
            return prefix;
        } else {
            //this prefix is already used for a different uri so generate a new one
            prefix = generatePrefix(uri);
            nr.put(prefix, uri);
            return prefix;
        }
    }

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    * INTERNAL:
    * Return the NamespaceResolver
    */
    public NamespaceResolver getNamespaceResolver() {
        if (namespaceResolver == null) {
            namespaceResolver = new NamespaceResolver();
        }
        return namespaceResolver;
    }

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        initWrapperTypes();
        initWrappersHashMap();
        initTypesHashMap();


        namespaceResolver = new NamespaceResolver();
        initOpenProps();


        SDOType openSequencedType = (SDOType) typesHashMap.get(new QName(SDOConstants.ORACLE_SDO_URL, "OpenSequencedType"));
        openSequencedType.getXmlDescriptor().setNamespaceResolver(null);

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     */
    public String getPrefix(String uri) {
        if (uri == null) {
            return null;
        }
        NamespaceResolver nr = getNamespaceResolver();
        String existingPrefixForUri = nr.resolveNamespaceURI(uri);
        if ((existingPrefixForUri == null) || existingPrefixForUri.equals("")) {
            //doesn't exist so generate one
            //String newPrefix = nr.generatePrefix();
            String newPrefix = generatePrefix(uri);
            nr.put(newPrefix, uri);
            return newPrefix;
        } else {
            //exists so return
            return existingPrefixForUri;
        }

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            return existingPrefixForUri;
        }
    }


    private String generatePrefix(String uri) {
        NamespaceResolver nr = getNamespaceResolver();
        if (uri.equals(SDOConstants.SDO_URL)) {
            return nr.generatePrefix("sdo");
        } else if (uri.equals(SDOConstants.SDOXML_URL)) {
            return nr.generatePrefix("sdoXML");
        } else if (uri.equals(SDOConstants.SDOJAVA_URL)) {
            return nr.generatePrefix("sdoJava");
        } else {
            return nr.generatePrefix();
        }
    }

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                    String key = nextElement.getAttribute(SDOConstants.APPINFO_SOURCE_ATTRIBUTE);
                    String value = (String)appInfoMap.get(key);
                    StringWriter sw = new StringWriter();
                    WriterRecord wrec = new WriterRecord();
                    wrec.setWriter(sw);
                    wrec.node(nextElement, new NamespaceResolver());
                    appInfoMap.put(key, value == null ? sw.toString() : value + sw.toString());
                }
            }
        }
        return appInfoMap;

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    }


    public String getStringFromAppInfoElement(Element appInfo) {
        FormattedWriterRecord record = new FormattedWriterRecord();
        record.setWriter(new StringWriter());
        record.node(appInfo, new NamespaceResolver());
        return record.getWriter().toString();
    }

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            topLinkProject = new Project();
            XMLLogin xmlLogin = new XMLLogin();
            xmlLogin.setEqualNamespaceResolvers(false);
            topLinkProject.setDatasourceLogin(xmlLogin);
            // 200606_changeSummary
            NamespaceResolver nr = new NamespaceResolver();
            SDOTypeHelper sdoTypeHelper = (SDOTypeHelper) aHelperContext.getTypeHelper();
            String sdoPrefix = sdoTypeHelper.getPrefix(SDOConstants.SDO_URL);
            nr.put(sdoPrefix, SDOConstants.SDO_URL);
            SDOType changeSummaryType = (SDOType) sdoTypeHelper.getType(SDOConstants.SDO_URL, SDOConstants.CHANGESUMMARY);
            changeSummaryType.getXmlDescriptor().setNamespaceResolver(nr);
            topLinkProject.addDescriptor(changeSummaryType.getXmlDescriptor());
            SDOType openSequencedType = (SDOType) aHelperContext.getTypeHelper().getType(SDOConstants.ORACLE_SDO_URL, "OpenSequencedType");
            topLinkProject.addDescriptor(openSequencedType.getXmlDescriptor());

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            }
        }
    }


    private boolean addNextNamespaceResolver(Map attributesMap) {
        NamespaceResolver nr = new NamespaceResolver();
        Iterator iter = attributesMap.keySet().iterator();
        while (iter.hasNext()) {
            QName key = (QName) iter.next();
            if (key.getNamespaceURI().equals(XMLConstants.XMLNS_URL)) {
                String value = (String) attributesMap.get(key);
                String prefix = key.getLocalPart();
                int index = prefix.indexOf(':');
                if (index > -1) {
                    prefix = prefix.substring(index + 1, prefix.length());
                }
                nr.put(prefix, value);
            }
        }
        if (nr.getPrefixes().hasMoreElements()) {
            namespaceResolvers.add(nr);
            return true;
        }
        return false;
    }

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        return p;
    }


    private void addRootElementToDescriptor(SDOProperty p, String targetNamespace, String xsdName) {
        if (!p.getType().isDataType()) {
            NamespaceResolver nr = ((SDOType) p.getType()).getXmlDescriptor().getNamespaceResolver();
            String prefix = null;
            if (nr != null) {
                prefix = nr.resolveNamespaceURI(targetNamespace);
            }
            if ((prefix == null) || prefix.equals(SDOConstants.EMPTY_STRING)) {
                ((SDOType) p.getType()).getXmlDescriptor().addRootElement(xsdName);
            } else {
                ((SDOType) p.getType()).getXmlDescriptor().addRootElement(prefix + //

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