diff options
Diffstat (limited to 'tags/java-M1-final/java/sdo/impl/src/main/java/org/apache/tuscany/sdo/util/StAX2SAXAdapter.java')
-rw-r--r-- | tags/java-M1-final/java/sdo/impl/src/main/java/org/apache/tuscany/sdo/util/StAX2SAXAdapter.java | 242 |
1 files changed, 0 insertions, 242 deletions
diff --git a/tags/java-M1-final/java/sdo/impl/src/main/java/org/apache/tuscany/sdo/util/StAX2SAXAdapter.java b/tags/java-M1-final/java/sdo/impl/src/main/java/org/apache/tuscany/sdo/util/StAX2SAXAdapter.java deleted file mode 100644 index 858d445640..0000000000 --- a/tags/java-M1-final/java/sdo/impl/src/main/java/org/apache/tuscany/sdo/util/StAX2SAXAdapter.java +++ /dev/null @@ -1,242 +0,0 @@ -/** - * - * Copyright 2005 The Apache Software Foundation or its licensors, as applicable. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -package org.apache.tuscany.sdo.util; - -import javax.xml.namespace.QName; -import javax.xml.stream.Location; -import javax.xml.stream.XMLStreamConstants; -import javax.xml.stream.XMLStreamException; -import javax.xml.stream.XMLStreamReader; - -import org.xml.sax.Attributes; -import org.xml.sax.ContentHandler; -import org.xml.sax.Locator; -import org.xml.sax.SAXException; -import org.xml.sax.helpers.AttributesImpl; - -/** - * Adapter that converts from StAX to SAX event streams. - * Currently the following SAX events are not generated: - * <ul> - * <li>ignorableWhitespace</li> - * <li>skippedEntity</li> - * <ul> - * Also the following StAX events are not mapped: - * <ul> - * <li>CDATA</li> - * <li>COMMENT</li> - * <li>DTD</li> - * <li>ENTITY_DECLARATION</li> - * <li>ENTITY_REFERENCE</li> - * <li>NOTATION_DECLARATION</li> - * <li>SPACE</li> - * </ul> - * StAX ATTRIBUTE events are ignored but the equivalent attributes (derived from the START_ELEMENT event) - * are supplied in the SAX startElement event's Attributes parameter. If the adaptor is configured to - * pass namespace prefixes then namespace information will also be included in the Attributes; - * StAX NAMESPACE events are ignored. - * - * @version $Rev$ $Date$ - */ -public class StAX2SAXAdapter { - private final boolean namespacePrefixes; - - /** - * Construct a new StAX to SAX adapter that will convert a StAX event stream into a SAX event stream. - * - * @param namespacePrefixes whether xmlns attributes should be included in startElement events; - */ - public StAX2SAXAdapter(boolean namespacePrefixes) { - this.namespacePrefixes = namespacePrefixes; - } - - /** - * Pull events from the StAX stream and dispatch to the SAX ContentHandler. - * The StAX stream would typically be located on a START_DOCUMENT or START_ELEMENT event - * and when this method returns it will be located on the associated END_DOCUMENT or - * END_ELEMENT event. Behaviour with other start events is undefined. - * - * @param reader StAX event source to read - * @param handler SAX ContentHandler for processing events - * @throws XMLStreamException if there was a problem reading the stream - * @throws SAXException passed through from the ContentHandler - */ - public void parse(XMLStreamReader reader, ContentHandler handler) throws XMLStreamException, SAXException { - handler.setDocumentLocator(new LocatorAdaptor(reader.getLocation())); - - // remembers the nest level of elements to know when we are done - int level = 0; - int event = reader.getEventType(); - while (true) { - switch (event) { - case XMLStreamConstants.START_DOCUMENT: - level++; - handler.startDocument(); - break; - case XMLStreamConstants.START_ELEMENT: - level++; - handleStartElement(reader, handler); - break; - case XMLStreamConstants.PROCESSING_INSTRUCTION: - handler.processingInstruction(reader.getPITarget(), reader.getPIData()); - break; - case XMLStreamConstants.CHARACTERS: - char[] chars = reader.getTextCharacters(); - handler.characters(chars, 0, chars.length); - break; - case XMLStreamConstants.END_ELEMENT: - handleEndElement(reader, handler); - level--; - if (level == 0) { - return; - } - break; - case XMLStreamConstants.END_DOCUMENT: - handler.endDocument(); - return; -/* uncomment to handle all events rather than just mapped ones - // StAX events that are not mapped to SAX - case XMLStreamConstants.COMMENT: - case XMLStreamConstants.SPACE: - case XMLStreamConstants.ENTITY_REFERENCE: - case XMLStreamConstants.DTD: - case XMLStreamConstants.CDATA: - case XMLStreamConstants.NOTATION_DECLARATION: - case XMLStreamConstants.ENTITY_DECLARATION: - break; - // StAX events handled in START_ELEMENT - case XMLStreamConstants.ATTRIBUTE: - case XMLStreamConstants.NAMESPACE: - break; - default: - throw new AssertionError("Unknown StAX event: " + event); -*/ - } - event = reader.next(); - } - } - - private void handleStartElement(XMLStreamReader reader, ContentHandler handler) throws SAXException { - // send startPrefixMapping events immediately before startElement event - int nsCount = reader.getNamespaceCount(); - for (int i = 0; i < nsCount; i++) { - String prefix = reader.getNamespacePrefix(i); - if (prefix == null) { // true for default namespace - prefix = ""; - } - handler.startPrefixMapping(prefix, reader.getNamespaceURI(i)); - } - - // fire startElement - QName qname = reader.getName(); - String prefix = qname.getPrefix(); - String rawname; - if (prefix == null || prefix.length() == 0) { - rawname = qname.getLocalPart(); - } else { - rawname = prefix + ':' + qname.getLocalPart(); - } - Attributes attrs = getAttributes(reader); - handler.startElement(qname.getNamespaceURI(), qname.getLocalPart(), rawname, attrs); - } - - private static void handleEndElement(XMLStreamReader reader, ContentHandler handler) throws SAXException { - // fire endElement - QName qname = reader.getName(); - handler.endElement(qname.getNamespaceURI(), qname.getLocalPart(), qname.toString()); - - // send endPrefixMapping events immediately after endElement event - // we send them in the opposite order to that returned but this is not actually required by SAX - int nsCount = reader.getNamespaceCount(); - for (int i = nsCount - 1; i >= 0; i--) { - String prefix = reader.getNamespacePrefix(i); - if (prefix == null) { // true for default namespace - prefix = ""; - } - handler.endPrefixMapping(prefix); - } - } - - /** - * Get the attributes associated with the current START_ELEMENT event. - * - * @return the StAX attributes converted to org.xml.sax.Attributes - */ - private Attributes getAttributes(XMLStreamReader reader) { - assert reader.getEventType() == XMLStreamConstants.START_ELEMENT; - - AttributesImpl attrs = new AttributesImpl(); - - // add namespace declarations if required - if (namespacePrefixes) { - for (int i = 0; i < reader.getNamespaceCount(); i++) { - String prefix = reader.getNamespacePrefix(i); - String uri = reader.getNamespaceURI(i); - attrs.addAttribute(null, prefix, "xmlns:" + prefix, "CDATA", uri); - } - } - - // Regular attributes - for (int i = 0; i < reader.getAttributeCount(); i++) { - String uri = reader.getAttributeNamespace(i); - if (uri == null) { - uri = ""; - } - String localName = reader.getAttributeLocalName(i); - String prefix = reader.getAttributePrefix(i); - String qname; - if (prefix == null || prefix.length() == 0) { - qname = localName; - } else { - qname = prefix + ':' + localName; - } - String type = reader.getAttributeType(i); - String value = reader.getAttributeValue(i); - - attrs.addAttribute(uri, localName, qname, type, value); - } - - return attrs; - } - - /** - * Adaptor for mapping Locator information. - */ - private static class LocatorAdaptor implements Locator { - private final Location location; - - private LocatorAdaptor(Location location) { - this.location = location; - } - - public int getColumnNumber() { - return location.getColumnNumber(); - } - - public int getLineNumber() { - return location.getLineNumber(); - } - - public String getPublicId() { - return location.getPublicId(); - } - - public String getSystemId() { - return location.getSystemId(); - } - } -}
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