| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * |
| * Copyright (c) 2003 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, |
| * if any, must include the following acknowledgment: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowledgment may appear in the software itself, |
| * if and wherever such third-party acknowledgments normally appear. |
| * |
| * 4. The names "Apache" and "Apache Software Foundation" must |
| * not be used to endorse or promote products derived from this |
| * software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache |
| * XMLBeans", nor may "Apache" appear in their name, without prior |
| * written permission of the Apache Software Foundation. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation and was |
| * originally based on software copyright (c) 2000-2003 BEA Systems |
| * Inc., <http://www.bea.com/>. For more information on the Apache Software |
| * Foundation, please see <http://www.apache.org/>. |
| */ |
| |
| package org.apache.xmlbeans.impl.marshal; |
| |
| import org.apache.xmlbeans.XmlException; |
| import org.apache.xmlbeans.impl.binding.bts.BindingLoader; |
| import org.apache.xmlbeans.impl.binding.bts.BindingType; |
| import org.apache.xmlbeans.impl.binding.bts.XmlName; |
| |
| import javax.xml.namespace.QName; |
| import javax.xml.stream.XMLStreamException; |
| import javax.xml.stream.XMLStreamReader; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Collections; |
| |
| /** |
| * A Unmarshaller knows how to convert xml to java objects. |
| */ |
| class UnmarshallerImpl |
| implements Unmarshaller |
| { |
| private final BindingLoader bindingLoader; |
| private final RuntimeBindingTypeTable typeTable; |
| |
| |
| /*package*/ |
| UnmarshallerImpl(BindingLoader bindingLoader, |
| RuntimeBindingTypeTable typeTable) |
| { |
| this.bindingLoader = bindingLoader; |
| this.typeTable = typeTable; |
| } |
| |
| public Object unmarshal(XMLStreamReader reader) |
| throws XmlException |
| { |
| UnmarshalContext context = createUnmarshallContext(reader, |
| new ArrayList()); |
| |
| advanceToFirstItemOfInterest(reader); |
| |
| final BindingType bindingType = determineRootType(context); |
| |
| TypeUnmarshaller um = |
| typeTable.getTypeUnmarshaller(bindingType); |
| |
| if (um == null) { |
| throw new XmlException("failed to lookup unmarshaller for " + bindingType); |
| } |
| |
| Object type_instance = um.unmarshal(context); |
| |
| final Collection errors = context.getErrorCollection(); |
| if (!errors.isEmpty()) { |
| //TODO: review this ctor |
| System.out.println("errors = " + errors); |
| String msg = errorsToMsg(errors); |
| throw new XmlException(msg, null, |
| Collections.unmodifiableCollection(errors)); |
| } |
| |
| return type_instance; |
| } |
| |
| private static String errorsToMsg(final Collection errors) |
| { |
| final int sz = errors.size(); |
| assert sz > 0; |
| |
| if (sz == 1) { |
| return "unmarshalling error: " + errors.iterator().next(); |
| } else { |
| return "unmarshalling errors (" + sz + ")"; |
| } |
| } |
| |
| private void advanceToFirstItemOfInterest(XMLStreamReader rdr) |
| throws XmlException |
| { |
| try { |
| for (int state = rdr.getEventType(); rdr.hasNext(); state = rdr.next()) { |
| switch (state) { |
| |
| //these are things we can handle... |
| case XMLStreamReader.START_ELEMENT: |
| return; |
| |
| //eventually we'll handle these... |
| case XMLStreamReader.ATTRIBUTE: |
| case XMLStreamReader.CHARACTERS: |
| throw new AssertionError("UNIMPLEMENTED TYPE: " + state); |
| |
| //bad news in the xml stream |
| case XMLStreamReader.END_DOCUMENT: |
| throw new XmlException("unexpected end of XML"); |
| case XMLStreamReader.END_ELEMENT: |
| throw new XmlException("unexpected end of XML"); |
| |
| //skip these and keep going |
| case XMLStreamReader.PROCESSING_INSTRUCTION: |
| case XMLStreamReader.COMMENT: |
| case XMLStreamReader.START_DOCUMENT: |
| case XMLStreamReader.SPACE: |
| break; |
| |
| default: |
| //this case pretty much means malformed xml or a bug |
| throw new XmlException("unexpected xml state:" + state + |
| "in" + rdr); |
| } |
| } |
| throw new XmlException("unexpected end of xml stream"); |
| } |
| catch (XMLStreamException e) { |
| throw new XmlException(e); |
| } |
| } |
| |
| private BindingType determineRootType(UnmarshalContext context) |
| throws XmlException |
| { |
| //TODO: fix this temporary hack |
| //to get started we're relying on xsi:type being on the root element |
| //to avoid requiring the schema |
| |
| QName xsi_type = context.getXsiType(); |
| if (xsi_type == UnmarshalContext.XSI_NIL_MARKER) { |
| throw new AssertionError("xsi:nil broken on root element for now"); |
| } |
| |
| if (xsi_type == null) { |
| throw new AssertionError("xsi:type is required for now"); |
| } |
| |
| XmlName type_name = XmlName.forTypeNamed(xsi_type); |
| |
| BindingType bt = |
| bindingLoader.getBindingType(bindingLoader.lookupPojoFor(type_name)); |
| |
| if (bt == null) { |
| throw new XmlException("failed to load BindingType for XmlName: " + |
| type_name); |
| } |
| |
| return bt; |
| } |
| |
| private UnmarshalContext createUnmarshallContext(XMLStreamReader reader, |
| Collection errors) |
| { |
| return new UnmarshalContext(reader, bindingLoader, typeTable, errors); |
| } |
| |
| |
| } |