Package javax.xml.namespace

Examples of javax.xml.namespace.NamespaceContext

All get*(*) methods operate in the current scope for Namespace URI and prefix resolution.

Note that a Namespace URI can be bound to multiple prefixes in the current scope. This can occur when multiple XMLConstants.XMLNS_ATTRIBUTE ("xmlns") Namespace declarations occur in the same Start-Tag and refer to the same Namespace URI. e.g.

 <element xmlns:prefix1="http://Namespace-name-URI" xmlns:prefix2="http://Namespace-name-URI">

This can also occur when the same Namespace URI is used in multiple XMLConstants.XMLNS_ATTRIBUTE ("xmlns") Namespace declarations in the logical parent element hierarchy. e.g.
 <parent xmlns:prefix1="http://Namespace-name-URI"> <child xmlns:prefix2="http://Namespace-name-URI"> ... </child> </parent>

A prefix can only be bound to a single Namespace URI in the current scope.

@author JAXP Java Community Process @author JAXP Reference Implementation @version 1.0.proposed @see javax.xml.XMLConstants declarations of common XML values @see Namespaces in XML @see Namespaces in XML Errata @see XML Schema Part2: Datatypes
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    public static String getUniquePrefix(XMLStreamWriter writer, String namespaceURI)
        throws XMLStreamException {
        return getUniquePrefix(writer, namespaceURI, false);
    }
    public static String getUniquePrefix(XMLStreamWriter writer) {
        NamespaceContext nc = writer.getNamespaceContext();
        if (nc == null) {
            return DEF_PREFIXES[0];
        }
        for (String t : DEF_PREFIXES) {
            String uri = nc.getNamespaceURI(t);
            if (StringUtils.isEmpty(uri)) {
                return t;
            }
        }

        int n = 10;
        while (true) {
            String nsPrefix = "ns" + n;
            String uri = nc.getNamespaceURI(nsPrefix);
            if (StringUtils.isEmpty(uri)) {
                return nsPrefix;
            }
            n++;
        }
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    public static String getUniquePrefix(XMLStreamWriter writer, String namespaceURI)
        throws XMLStreamException {
        return getUniquePrefix(writer, namespaceURI, false);
    }
    public static String getUniquePrefix(XMLStreamWriter writer) {
        NamespaceContext nc = writer.getNamespaceContext();
        if (nc == null) {
            return DEF_PREFIXES[0];
        }
        for (String t : DEF_PREFIXES) {
            String uri = nc.getNamespaceURI(t);
            if (StringUtils.isEmpty(uri)) {
                return t;
            }
        }

        int n = 10;
        while (true) {
            String nsPrefix = "ns" + n;
            String uri = nc.getNamespaceURI(nsPrefix);
            if (StringUtils.isEmpty(uri)) {
                return nsPrefix;
            }
            n++;
        }
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        if (prefix != null) {
            return null;
        } else {
           
            // Find an available prefix and bind it to the given URI
            NamespaceContext nsc = writer.getNamespaceContext();
            for (int i=1; ; i++) {
                prefix = "ns" + i;
                if (nsc.getNamespaceURI(prefix) == null) {
                    break;
                }
            }
            writer.setPrefix(prefix, uri);
            return prefix;
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                    }
                   
                } else {
                   
                    // Find an available prefix and bind it to the given URI
                    NamespaceContext nsc = writer.getNamespaceContext();
                    for (int i=1; ; i++) {
                        prefix = "ns" + i;
                        if (nsc.getNamespaceURI(prefix) == null) {
                            break;
                        }
                    }
                    writer.setPrefix(prefix, uri);
                    writer.writeNamespace(prefix, uri);
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                if (prefix != null) {
                    return;
                } else {
                   
                    // Find an available prefix and bind it to the given URI
                    NamespaceContext nsc = writer.getNamespaceContext();
                    for (int i=1; ; i++) {
                        prefix = "ns" + i;
                        if (nsc.getNamespaceURI(prefix) == null) {
                            break;
                        }
                    }
                    writer.setPrefix(prefix, uri);
                    writer.writeNamespace(prefix, uri);
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    public static String getUniquePrefix(XMLStreamWriter writer, String namespaceURI)
        throws XMLStreamException {
        return getUniquePrefix(writer, namespaceURI, false);
    }
    public static String getUniquePrefix(XMLStreamWriter writer) {
        NamespaceContext nc = writer.getNamespaceContext();
        if (nc == null) {
            return DEF_PREFIXES[0];
        }
        for (String t : DEF_PREFIXES) {
            String uri = nc.getNamespaceURI(t);
            if (StringUtils.isEmpty(uri)) {
                return t;
            }
        }

        int n = 10;
        while (true) {
            String nsPrefix = "ns" + n;
            String uri = nc.getNamespaceURI(nsPrefix);
            if (StringUtils.isEmpty(uri)) {
                return nsPrefix;
            }
            n++;
        }
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            assertEquals("Error compiling XPath expression '/a:order/b:header[@cat='blue']'.", e.getMessage());
        }
    }

    public void test_namespaces_defined() throws IOException, SAXException, ConfigurationException, MessageRouterException {
        NamespaceContext nsContext = test("5");

        assertEquals("http://a", nsContext.getNamespaceURI("a"));
        assertEquals("http://b", nsContext.getNamespaceURI("b"));
    }
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            assertEquals("Error compiling XPath expression '/a:order/b:header[@cat='blue']'.", e.getMessage());
        }
    }

    public void test_namespaces_defined() throws IOException, SAXException, ConfigurationException, MessageRouterException {
        NamespaceContext nsContext = test("5");

        assertEquals("http://a", nsContext.getNamespaceURI("a"));
        assertEquals("http://b", nsContext.getNamespaceURI("b"));
    }
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        throws XMLStreamException
    {
        final String namespaceURI = QNameHelper.getNormalisedValue(elementName.getNamespaceURI()) ;
        final String localName = elementName.getLocalPart() ;
       
        final NamespaceContext namespaceContext = out.getNamespaceContext() ;
        final boolean writeNamespace = (namespaceContext.getPrefix(namespaceURI) == null) ;
       
        if (writeNamespace)
        {
            final String prefix = QNameHelper.getNormalisedValue(elementName.getPrefix()) ;
            final String origNamespace = QNameHelper.getNormalisedValue(namespaceContext.getNamespaceURI(prefix)) ;
            if (prefix.length() == 0)
            {
                out.setDefaultNamespace(namespaceURI) ;
                out.writeStartElement(namespaceURI, localName) ;
                out.writeDefaultNamespace(namespaceURI) ;
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        {
            writeAttribute(out, attributeName, attributeValue.getLocalPart()) ;
        }
        else
        {
            final NamespaceContext namespaceContext = out.getNamespaceContext() ;
            final String origPrefix = namespaceContext.getPrefix(namespaceURI) ;
           
            if (origPrefix == null)
            {
                final String prefix = QNameHelper.getNormalisedValue(attributeValue.getPrefix()) ;
                writeNamespace(out, prefix, namespaceURI) ;
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