Examples of org.w3c.dom.ls.LSParser

org.w3c.dom.ls.LSParser
3.org/TR/2004/REC-DOM-Level-3-Core-20040407'>DOM Level 3 Core] , when a document is first made available via the LSParser:
- there will never be two adjacent nodes of type NODE_TEXT, and there will never be empty text nodes.
- it is expected that the value and nodeValue attributes of an Attr node initially return the XML 1.0 normalized value. However, if the parameters " validate-if-schema" and " datatype-normalization" are set to true, depending on the attribute normalization used, the attribute values may differ from the ones obtained by the XML 1.0 attribute normalization. If the parameters " datatype-normalization" is set to false, the XML 1.0 attribute normalization is guaranteed to occur, and if the attributes list does not contain namespace declarations, the attributes attribute on Element node represents the property [attributes] defined in [XML Information Set] .
Asynchronous LSParser objects are expected to also implement the events::EventTarget interface so that event listeners can be registered on asynchronous LSParser objects.
Events supported by asynchronous LSParser objects are:

load

The LSParser finishes to load the document. See also the definition of the LSLoadEvent interface.

progress

The LSParser signals progress as data is parsed. This specification does not attempt to define exactly when progress events should be dispatched. That is intentionally left as implementation-dependent. Here is one example of how an application might dispatch progress events: Once the parser starts receiving data, a progress event is dispatched to indicate that the parsing starts. From there on, a progress event is dispatched for every 4096 bytes of data that is received and processed. This is only one example, though, and implementations can choose to dispatch progress events at any time while parsing, or not dispatch them at all. See also the definition of the LSProgressEvent interface.

Note: All events defined in this specification use the namespace URI "http://www.w3.org/2002/DOMLS".
While parsing an input source, errors are reported to the application through the error handler (LSParser.domConfig's " error-handler" parameter). This specification does in no way try to define all possible errors that can occur while parsing XML, or any other markup, but some common error cases are defined. The types (DOMError.type) of errors and warnings defined by this specification are:
"check-character-normalization-failure" [error]

Raised if the parameter " check-character-normalization" is set to true and a string is encountered that fails normalization checking.

"doctype-not-allowed" [fatal]

Raised if the configuration parameter "disallow-doctype" is set to true and a doctype is encountered.

"no-input-specified" [fatal]

Raised when loading a document and no input is specified in the LSInput object.

"pi-base-uri-not-preserved" [warning]
Raised if a processing instruction is encountered in a location where the base URI of the processing instruction can not be preserved. One example of a case where this warning will be raised is if the configuration parameter " entities" is set to false and the following XML file is parsed:
```
 <!DOCTYPE root [ <!ENTITY e SYSTEM 'subdir/myentity.ent' ]> <root> &e; </root>
```
And subdir/myentity.ent contains:
```
<one> <two/> </one> <?pi 3.14159?> <more/>
```
"unbound-prefix-in-entity" [warning]

An implementation dependent warning that may be raised if the configuration parameter " namespaces" is set to true and an unbound namespace prefix is encountered in an entity's replacement text. Raising this warning is not enforced since some existing parsers may not recognize unbound namespace prefixes in the replacement text of entities.

"unknown-character-denormalization" [fatal]

Raised if the configuration parameter "ignore-unknown-character-denormalizations" is set to false and a character is encountered for which the processor cannot determine the normalization properties.

"unsupported-encoding" [fatal]

Raised if an unsupported encoding is encountered.

"unsupported-media-type" [fatal]

Raised if the configuration parameter "supported-media-types-only" is set to true and an unsupported media type is encountered.
In addition to raising the defined errors and warnings, implementations are expected to raise implementation specific errors and warnings for any other error and warning cases such as IO errors (file not found, permission denied,...), XML well-formedness errors, and so on.
See also the Document Object Model (DOM) Level 3 Load and Save Specification.

        xml = xml.replaceAll("\\s*<", "<");
        xml = xml.replaceAll(">\\s*", ">");


        DOMImplementationRegistry registry = DOMImplementationRegistry.newInstance();
        DOMImplementationLS domLS = (DOMImplementationLS) registry.getDOMImplementation("LS");
        LSParser lsParser = domLS.createLSParser(DOMImplementationLS.MODE_SYNCHRONOUS, null);


        LSInput input = domLS.createLSInput();
        input.setStringData(xml);
        Document document = lsParser.parse(input);


        LSSerializer lsSerializer = domLS.createLSSerializer();
        lsSerializer.getDomConfig().setParameter("comments", Boolean.FALSE);
        lsSerializer.getDomConfig().setParameter("format-pretty-print", Boolean.TRUE);
        return lsSerializer.writeToString(document);

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        xml = xml.replaceAll("\\s*<", "<");
        xml = xml.replaceAll(">\\s*", ">");


        DOMImplementationRegistry registry = DOMImplementationRegistry.newInstance();
        DOMImplementationLS domLS = (DOMImplementationLS) registry.getDOMImplementation("LS");
        LSParser lsParser = domLS.createLSParser(DOMImplementationLS.MODE_SYNCHRONOUS, null);


        LSInput input = domLS.createLSInput();
        input.setStringData(xml);
        Document document = lsParser.parse(input);


        LSSerializer lsSerializer = domLS.createLSSerializer();
        lsSerializer.getDomConfig().setParameter("comments", Boolean.FALSE);
        lsSerializer.getDomConfig().setParameter("format-pretty-print", Boolean.TRUE);
        return lsSerializer.writeToString(document);

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        xml = xml.replaceAll("\\s*<", "<");
        xml = xml.replaceAll(">\\s*", ">");


        DOMImplementationRegistry registry = DOMImplementationRegistry.newInstance();
        DOMImplementationLS domLS = (DOMImplementationLS) registry.getDOMImplementation("LS");
        LSParser lsParser = domLS.createLSParser(DOMImplementationLS.MODE_SYNCHRONOUS, null);


        LSInput input = domLS.createLSInput();
        input.setStringData(xml);
        Document document = lsParser.parse(input);


        LSSerializer lsSerializer = domLS.createLSSerializer();
        lsSerializer.getDomConfig().setParameter("comments", Boolean.TRUE);
        lsSerializer.getDomConfig().setParameter("format-pretty-print", Boolean.TRUE);
        return lsSerializer.writeToString(document);

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        xml = xml.replaceAll("\\s*<", "<");
        xml = xml.replaceAll(">\\s*", ">");


        DOMImplementationRegistry registry = DOMImplementationRegistry.newInstance();
        DOMImplementationLS domLS = (DOMImplementationLS) registry.getDOMImplementation("LS");
        LSParser lsParser = domLS.createLSParser(DOMImplementationLS.MODE_SYNCHRONOUS, null);


        LSInput input = domLS.createLSInput();
        input.setStringData(xml);
        Document document = lsParser.parse(input);


        LSSerializer lsSerializer = domLS.createLSSerializer();
        lsSerializer.getDomConfig().setParameter("comments", Boolean.FALSE);
        lsSerializer.getDomConfig().setParameter("format-pretty-print", Boolean.TRUE);
        return lsSerializer.writeToString(document);

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        this.parserPool = new ParserPool(domImplementationLS);
    }


    private LSParser getParser() throws Exception {
        //TODO: Use a cache for the parsers?
        LSParser parser = (LSParser)parserPool.get();
        return parser;
    }

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        parserPool.recycle(parser);
    }
    
    public Document parse(InputStream is, boolean ignoreBlanks) throws XMLException {
        try {
            LSParser parser = getParser();
            try {
                if(ignoreBlanks) {
                    parser.setFilter(BLANK_FILTER);
                }
                LSInput ip = domImplementationLS.createLSInput();
                ip.setByteStream(is);
                Document doc = parser.parse(ip);
                return doc;
            } finally {
                recycleParser(parser);
            }
        } catch(Exception e) {

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        }
    }


    public Document parse(Reader reader, boolean ignoreBlanks) throws XMLException {
        try {
            LSParser parser = getParser();
            try {
                if(ignoreBlanks) {
                    parser.setFilter(BLANK_FILTER);
                }
                LSInput ip = domImplementationLS.createLSInput();
                ip.setCharacterStream(reader);
                Document doc = parser.parse(ip);
                return doc;
            } finally {
                recycleParser(parser);
            }
        } catch(Exception e) {

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        ParserPool(DOMImplementationLS domImplementationLS) {
            super(8); // Use a parameter here?
            this.domImplementationLS = domImplementationLS;
        }
        protected Object createObject() throws Exception {
            LSParser parser = domImplementationLS.createLSParser(DOMImplementationLS.MODE_SYNCHRONOUS, null);
            return parser;
        }

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        } catch (Exception e) {
            throw new ServiceRuntimeException(e);
        }
        DOMImplementation impl = registry.getDOMImplementation("XML 3.0");
        DOMImplementationLS ls = (DOMImplementationLS)impl.getFeature("LS", "3.0");
        LSParser parser = ls.createLSParser(DOMImplementationLS.MODE_SYNCHRONOUS, SCHEMA_NS);
        LSInput input = ls.createLSInput();
        input.setCharacterStream(new StringReader(schema));
        Document document = parser.parse(input);
        XSDefinition definition = factory.createXSDefinition();
        definition.setUnresolved(true);
        definition.setDocument(document);
        definition.setNamespace(ns);
        definitions.add(definition);

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        } catch (Exception e) {
            throw new ServiceRuntimeException(e);
        }
        DOMImplementation impl = registry.getDOMImplementation("XML 3.0");
        DOMImplementationLS ls = (DOMImplementationLS)impl.getFeature("LS", "3.0");
        LSParser parser = ls.createLSParser(DOMImplementationLS.MODE_SYNCHRONOUS, SCHEMA_NS);
        LSInput input = ls.createLSInput();
        input.setCharacterStream(new StringReader(schema));
        Document document = parser.parse(input);
        XSDefinition definition = factory.createXSDefinition();
        definition.setUnresolved(true);
        definition.setDocument(document);
        definition.setNamespace(ns);
        definitions.add(definition);

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