Examples of mf.javax.xml.stream.XMLStreamReader

mf.javax.xml.stream.XMLStreamReader

The XMLStreamReader interface allows forward, read-only access to XML. It is designed to be the lowest level and most efficient way to read XML data.

The XMLStreamReader is designed to iterate over XML using next() and hasNext(). The data can be accessed using methods such as getEventType(), getNamespaceURI(), getLocalName() and getText();

The next() method causes the reader to read the next parse event. The next() method returns an integer which identifies the type of event just read.

The event type can be determined using getEventType().

Parsing events are defined as the XML Declaration, a DTD, start tag, character data, white space, end tag, comment, or processing instruction. An attribute or namespace event may be encountered at the root level of a document as the result of a query operation.

For XML 1.0 compliance an XML processor must pass the identifiers of declared unparsed entities, notation declarations and their associated identifiers to the application. This information is provided through the property API on this interface. The following two properties allow access to this information: javax.xml.stream.notations and javax.xml.stream.entities. When the current event is a DTD the following call will return a list of Notations List l = (List) getProperty("javax.xml.stream.notations"); The following call will return a list of entity declarations: List l = (List) getProperty("javax.xml.stream.entities"); These properties can only be accessed during a DTD event and are defined to return null if the information is not available.

The following table describes which methods are valid in what state. If a method is called in an invalid state the method will throw a java.lang.IllegalStateException.

Valid methods for each state
Event Type	Valid Methods
All States	getProperty(), hasNext(), require(), close(), getNamespaceURI(), isStartElement(), isEndElement(), isCharacters(), isWhiteSpace(), getNamespaceContext(), getEventType(),getLocation(), hasText(), hasName()
START_ELEMENT	next(), getName(), getLocalName(), hasName(), getPrefix(), getAttributeXXX(), isAttributeSpecified(), getNamespaceXXX(), getElementText(), nextTag()
ATTRIBUTE	next(), nextTag() getAttributeXXX(), isAttributeSpecified(),
NAMESPACE	next(), nextTag() getNamespaceXXX()
END_ELEMENT	next(), getName(), getLocalName(), hasName(), getPrefix(), getNamespaceXXX(), nextTag()
CHARACTERS	next(), getTextXXX(), nextTag()
CDATA	next(), getTextXXX(), nextTag()
COMMENT	next(), getTextXXX(), nextTag()
SPACE	next(), getTextXXX(), nextTag()
START_DOCUMENT	next(), getEncoding(), getVersion(), isStandalone(), standaloneSet(), getCharacterEncodingScheme(), nextTag()
END_DOCUMENT	close()
PROCESSING_INSTRUCTION	next(), getPITarget(), getPIData(), nextTag()
ENTITY_REFERENCE	next(), getLocalName(), getText(), nextTag()
DTD	next(), getText(), nextTag()

            IOException {
        if (result instanceof StAXResult || result == null) {
            StAXSource staxSource = (StAXSource) source;
            StAXResult staxResult = (StAXResult) result;
            try {
                XMLStreamReader streamReader = staxSource.getXMLStreamReader();
                if (streamReader != null) {
                    // Hand off to XMLStreamReader helper.
                    if (fStreamHelper == null) {
                        fStreamHelper = new StreamHelper();
                    }

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            boolean mustResolve, short referType, Element referElement) {
        IOException exception = null;
        Element schemaElement = null;
        try {
            final boolean consumeRemainingContent = schemaSource.shouldConsumeRemainingContent();
            final XMLStreamReader streamReader = schemaSource.getXMLStreamReader();
            final XMLEventReader eventReader = schemaSource.getXMLEventReader();
            
            // check whether the same document has been parsed before. 
            // If so, return the document corresponding to that system id.
            XSDKey key = null;
            String schemaId = null;
            if (referType != XSDDescription.CONTEXT_PREPARSE) {
                schemaId = XMLEntityManager.expandSystemId(schemaSource.getSystemId(), schemaSource.getBaseSystemId(), false);
                boolean isDocument = consumeRemainingContent;
                if (!isDocument) {
                    if (streamReader != null) {
                        isDocument = (streamReader.getEventType() == XMLStreamReader.START_DOCUMENT);
                    }
                    else {
                        isDocument = eventReader.peek().isStartDocument();
                    }
                }
                if (isDocument) {
                    key = new XSDKey(schemaId, referType, schemaNamespace);
                    if ((schemaElement = (Element) fTraversed.get(key)) != null) {
                        fLastSchemaWasDuplicate = true;
                        return schemaElement;
                    }
                }
            }
            
            if (fStAXSchemaParser == null) {
                fStAXSchemaParser = new StAXSchemaParser();
            }
            fStAXSchemaParser.reset(fSchemaParser, fSymbolTable);
            
            if (streamReader != null) {
                fStAXSchemaParser.parse(streamReader);
                if (consumeRemainingContent) {
                    while (streamReader.hasNext()) {
                        streamReader.next();
                    }
                }
            }
            else {
                fStAXSchemaParser.parse(eventReader);

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Related Classes of mf.javax.xml.stream.XMLStreamReader

mf.org.apache.xerces.impl.xs.traversers.XSDHandler

mf.org.apache.xerces.jaxp.validation.StAXValidatorHelper

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