private Element setupNamespaces()

in src/main/java/org/apache/ws/commons/schema/XmlSchemaSerializer.java [2403:2456]
48 lines of code
16 McCabe index (conditional complexity)

    private Element setupNamespaces(Document schemaDocs, XmlSchema schemaObj) {
        NamespacePrefixList ctx = schemaObj.getNamespaceContext();
        if (ctx != null) {
            xsdPrefix = ctx.getPrefix(XSD_NAMESPACE);
        } else {
            xsdPrefix = null;
        }

        if (xsdPrefix == null) {
            //find a prefix to use
            xsdPrefix = "";
            if (ctx != null && ctx.getNamespaceURI(xsdPrefix) != null) {
                xsdPrefix = "xsd";
            }
            int count = 0;
            while (ctx != null && ctx.getNamespaceURI(xsdPrefix) != null) {
                xsdPrefix = "xsd" + ++count;
            }
        }
        schemaObj.setSchemaNamespacePrefix(xsdPrefix);


        Element schemaEl = createNewElement(schemaDocs, "schema",
                                            schemaObj.getSchemaNamespacePrefix(), XmlSchema.SCHEMA_NS);

        if (ctx != null) {
            String[] prefixes = ctx.getDeclaredPrefixes();
            for (int i = 0;  i < prefixes.length;  i++) {
                String prefix = prefixes[i];
                String uri = ctx.getNamespaceURI(prefix);
                if (uri != null && prefix != null) {
                    if ("".equals(prefix) || !schemaNamespace.containsKey(uri)) {
                        schemaNamespace.put(uri, prefix);
                    }
                    prefix = (prefix.length() > 0) ? "xmlns:" + prefix : "xmlns";
                    schemaEl.setAttributeNS(XMLNS_NAMESPACE_URI,
                                            prefix, uri);
                }
            }
        }
        //for schema that not set the xmlns attrib member
        if (schemaNamespace.get(XSD_NAMESPACE) == null) {
            schemaNamespace.put(XSD_NAMESPACE, xsdPrefix);
            if ("".equals(xsdPrefix)) {
                schemaEl.setAttributeNS(XMLNS_NAMESPACE_URI,
                                        "xmlns", XSD_NAMESPACE);
            } else {
                schemaEl.setAttributeNS(XMLNS_NAMESPACE_URI,
                                        "xmlns:" + xsdPrefix, XSD_NAMESPACE);
            }
            schemaObj.setSchemaNamespacePrefix(xsdPrefix);
        }
        return schemaEl;
    }