Source Code Cross Referenced for UnmarshallerImpl.java in  » Portal » stringbeans-3.5 » com » nabhinc » portal » config » impl » runtime » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Portal » stringbeans 3.5 » com.nabhinc.portal.config.impl.runtime 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        //
002:        // This file was generated by the JavaTM Architecture for XML Binding(JAXB) Reference Implementation, v1.0.4-b18-fcs 
003:        // See <a href="http://java.sun.com/xml/jaxb">http://java.sun.com/xml/jaxb</a> 
004:        // Any modifications to this file will be lost upon recompilation of the source schema. 
005:        // Generated on: 2005.03.04 at 10:20:40 PST 
006:        //
007:
008:        package com.nabhinc.portal.config.impl.runtime;
009:
010:        import java.io.IOException;
011:
012:        import javax.xml.bind.DatatypeConverter;
013:        import javax.xml.bind.JAXBException;
014:        import javax.xml.bind.UnmarshallerHandler;
015:        import javax.xml.bind.helpers.AbstractUnmarshallerImpl;
016:
017:        import org.w3c.dom.Document;
018:        import org.w3c.dom.Element;
019:        import org.w3c.dom.Node;
020:        import org.xml.sax.InputSource;
021:        import org.xml.sax.SAXException;
022:        import org.xml.sax.XMLReader;
023:        import org.xml.sax.helpers.DefaultHandler;
024:
025:        import com.sun.xml.bind.DatatypeConverterImpl;
026:        import com.sun.xml.bind.unmarshaller.DOMScanner;
027:        import com.sun.xml.bind.unmarshaller.InterningXMLReader;
028:        import com.sun.xml.bind.validator.DOMLocator;
029:        import com.sun.xml.bind.validator.Locator;
030:        import com.sun.xml.bind.validator.SAXLocator;
031:
032:        /**
033:         * Default Unmarshall implementation.
034:         * 
035:         * <p>
036:         * This class can be extended by the generated code to provide
037:         * type-safe unmarshall methods.
038:         *
039:         * @author
040:         *  <a href="mailto:kohsuke.kawaguchi@sun.com">Kohsuke KAWAGUCHI</a>
041:         */
042:        public class UnmarshallerImpl extends AbstractUnmarshallerImpl {
043:            /** parent JAXBContext object that created this unmarshaller */
044:            private DefaultJAXBContextImpl context = null;
045:
046:            private final GrammarInfo grammarInfo;
047:
048:            public UnmarshallerImpl(DefaultJAXBContextImpl context,
049:                    GrammarInfo gi) {
050:
051:                this .context = context;
052:                this .grammarInfo = gi;
053:
054:                // initialize datatype converter with ours
055:                DatatypeConverter
056:                        .setDatatypeConverter(DatatypeConverterImpl.theInstance);
057:            }
058:
059:            public void setValidating(boolean validating) throws JAXBException {
060:                super .setValidating(validating);
061:                if (validating == true)
062:                    // make sure that we can actually load the grammar.
063:                    // this could be a lengthy operation if your schema is big.
064:                    context.getGrammar();
065:            }
066:
067:            public UnmarshallerHandler getUnmarshallerHandler() {
068:
069:                // use InterningUnmarshallerHandler since we don't know
070:                // if the caller will intern Strings before firing SAX events.
071:
072:                // we don't know the Locator to be used,
073:                // but SAXLocator would always be a good default,
074:                // as the source of SAX2 events can always set org.xml.sax.Locator.
075:                return new InterningUnmarshallerHandler(
076:                        createUnmarshallerHandler(new SAXLocator()));
077:            }
078:
079:            /**
080:             * Creates and configures a new unmarshalling pipe line.
081:             * Depending on the setting, we put a validator as a filter.
082:             * 
083:             * @return
084:             *      A component that implements both UnmarshallerHandler
085:             *      and ValidationEventHandler. All the parsing errors
086:             *      should be reported to this error handler for the unmarshalling
087:             *      process to work correctly.
088:             * 
089:             * @param locator
090:             *      The object that is responsible to obtain the source
091:             *      location information for {@link ValidationEvent}s.
092:             */
093:            private SAXUnmarshallerHandler createUnmarshallerHandler(
094:                    Locator locator) {
095:
096:                SAXUnmarshallerHandler unmarshaller = new SAXUnmarshallerHandlerImpl(
097:                        this , grammarInfo);
098:
099:                try {
100:
101:                    // use the simple check to determine if validation is on
102:                    if (isValidating()) {
103:                        // if the validation is turned on, insert another
104:                        // component into the event pipe line.
105:                        unmarshaller = ValidatingUnmarshaller.create(context
106:                                .getGrammar(), unmarshaller, locator);
107:                    }
108:                } catch (JAXBException e) {
109:                    // impossible since we've already made sure that a grammar is accessible.
110:                    e.printStackTrace();
111:                }
112:
113:                return unmarshaller;
114:            }
115:
116:            protected Object unmarshal(XMLReader reader, InputSource source)
117:                    throws JAXBException {
118:
119:                SAXLocator locator = new SAXLocator();
120:                SAXUnmarshallerHandler handler = createUnmarshallerHandler(locator);
121:
122:                reader = InterningXMLReader.adapt(reader);
123:
124:                reader.setContentHandler(handler);
125:                // saxErrorHandler will be set by the createUnmarshallerHandler method.
126:                // configure XMLReader so that the error will be sent to it.
127:                // This is essential for the UnmarshallerHandler to be able to abort
128:                // unmarshalling when an error is found.
129:                //
130:                // Note that when this XMLReader is provided by the client code,
131:                // it might be already configured to call a client error handler.
132:                // This will clobber such handler, if any.
133:                //
134:                // Ryan noted that we might want to report errors to such a client
135:                // error handler as well.
136:                reader
137:                        .setErrorHandler(new ErrorHandlerAdaptor(handler,
138:                                locator));
139:
140:                try {
141:                    reader.parse(source);
142:                } catch (IOException e) {
143:                    throw new JAXBException(e);
144:                } catch (SAXException e) {
145:                    throw createUnmarshalException(e);
146:                }
147:
148:                Object result = handler.getResult();
149:
150:                // avoid keeping unnecessary references too long to let the GC
151:                // reclaim more memory.
152:                // setting null upsets some parsers, so use a dummy instance instead.
153:                reader.setContentHandler(dummyHandler);
154:                reader.setErrorHandler(dummyHandler);
155:
156:                return result;
157:            }
158:
159:            public final Object unmarshal(Node node) throws JAXBException {
160:                try {
161:                    DOMScanner scanner = new DOMScanner();
162:                    UnmarshallerHandler handler = new InterningUnmarshallerHandler(
163:                            createUnmarshallerHandler(new DOMLocator(scanner)));
164:
165:                    if (node instanceof  Element)
166:                        scanner.parse((Element) node, handler);
167:                    else if (node instanceof  Document)
168:                        scanner.parse(((Document) node).getDocumentElement(),
169:                                handler);
170:                    else
171:                        // no other type of input is supported
172:                        throw new IllegalArgumentException();
173:
174:                    return handler.getResult();
175:                } catch (SAXException e) {
176:                    throw createUnmarshalException(e);
177:                }
178:            }
179:
180:            private static final DefaultHandler dummyHandler = new DefaultHandler();
181:        }
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