jdk8-mips64-public/jaxws: src/share/jaxws_classes/com/sun/xml/internal/bind/v2/runtime/unmarshaller/UnmarshallingContext.java@dc8316632248 (annotated)

src/share/jaxws_classes/com/sun/xml/internal/bind/v2/runtime/unmarshaller/UnmarshallingContext.java@dc8316632248 (annotated)

src/share/jaxws_classes/com/sun/xml/internal/bind/v2/runtime/unmarshaller/UnmarshallingContext.java

Mon, 28 May 2018 10:36:45 +0800

author: aoqi
date: Mon, 28 May 2018 10:36:45 +0800
changeset 1546: dc8316632248
parent 760: e530533619ec
permissions: -rw-r--r--

Merge

 /*
  * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Oracle in the LICENSE file that accompanied this code.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
 package com.sun.xml.internal.bind.v2.runtime.unmarshaller;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 import java.util.concurrent.Callable;
 import javax.xml.XMLConstants;
 import javax.xml.bind.JAXBElement;
 import javax.xml.bind.UnmarshalException;
 import javax.xml.bind.Unmarshaller;
 import javax.xml.bind.ValidationEvent;
 import javax.xml.bind.ValidationEventHandler;
 import javax.xml.bind.ValidationEventLocator;
 import javax.xml.bind.helpers.ValidationEventImpl;
 import javax.xml.namespace.NamespaceContext;
 import javax.xml.namespace.QName;
 import com.sun.istack.internal.NotNull;
 import com.sun.istack.internal.Nullable;
 import com.sun.istack.internal.SAXParseException2;
 import com.sun.xml.internal.bind.IDResolver;
 import com.sun.xml.internal.bind.Util;
 import com.sun.xml.internal.bind.api.AccessorException;
 import com.sun.xml.internal.bind.api.ClassResolver;
 import com.sun.xml.internal.bind.unmarshaller.InfosetScanner;
 import com.sun.xml.internal.bind.v2.ClassFactory;
 import com.sun.xml.internal.bind.v2.runtime.AssociationMap;
 import com.sun.xml.internal.bind.v2.runtime.Coordinator;
 import com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl;
 import com.sun.xml.internal.bind.v2.runtime.JaxBeanInfo;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 import org.xml.sax.ErrorHandler;
 import org.xml.sax.SAXException;
 import org.xml.sax.helpers.LocatorImpl;
 /**
  * Center of the unmarshalling.
  *
  * <p>
  * This object is responsible for coordinating {@link Loader}s to
  * perform the whole unmarshalling.
  *
  * @author Kohsuke Kawaguchi
  */
 public final class UnmarshallingContext extends Coordinator
     implements NamespaceContext, ValidationEventHandler, ErrorHandler, XmlVisitor, XmlVisitor.TextPredictor {
     private static final Logger logger = Logger.getLogger(UnmarshallingContext.class.getName());
     /**
      * Root state.
      */
     private final State root;
     /**
      * The currently active state.
      */
     private State current;
     private static final LocatorEx DUMMY_INSTANCE;
     static {
         LocatorImpl loc = new LocatorImpl();
         loc.setPublicId(null);
         loc.setSystemId(null);
         loc.setLineNumber(-1);
         loc.setColumnNumber(-1);
         DUMMY_INSTANCE = new LocatorExWrapper(loc);
     }
     private @NotNull LocatorEx locator = DUMMY_INSTANCE;
     /** Root object that is being unmarshalled. */
     private Object result;
     /**
      * If non-null, this unmarshaller will unmarshal {@code JAXBElement<EXPECTEDTYPE>}
      * regardless of the tag name, as opposed to deciding the root object by using
      * the tag name.
      *
      * The property has a package-level access, because we cannot copy this value
      * to {@link UnmarshallingContext} when it is created. The property
      * on {@link Unmarshaller} could be changed after the handler is created.
      */
     private JaxBeanInfo expectedType;
     /**
      * Handles ID/IDREF.
      */
     private IDResolver idResolver;
     /**
      * This flag is set to true at the startDocument event
      * and false at the endDocument event.
      *
      * Until the first document is unmarshalled, we don't
      * want to return an object. So this variable is initialized
      * to true.
      */
     private boolean isUnmarshalInProgress = true;
     private boolean aborted = false;
     public final UnmarshallerImpl parent;
     /**
      * If the unmarshaller is doing associative unmarshalling,
      * this field is initialized to non-null.
      */
     private final AssociationMap assoc;
     /**
      * Indicates whether we are doing in-place unmarshalling
      * or not.
      *
      * <p>
      * This flag is unused when {@link #assoc}==null.
      * If it's non-null, then <tt>true</tt> indicates
      * that we are doing in-place associative unmarshalling.
      * If <tt>false</tt>, then we are doing associative unmarshalling
      * without object reuse.
      */
     private boolean isInplaceMode;
     /**
      * This object is consulted to get the element object for
      * the current element event.
      *
      * This is used when we are building an association map.
      */
     private InfosetScanner scanner;
     private Object currentElement;
     /**
      * @see XmlVisitor#startDocument(LocatorEx, NamespaceContext)
      */
     private NamespaceContext environmentNamespaceContext;
     /**
      * Used to discover additional classes when we hit unknown elements/types.
      */
     public @Nullable ClassResolver classResolver;
     /**
      * User-supplied {@link ClassLoader} for converting name to {@link Class}.
      * For backward compatibility, when null, use thread context classloader.
      */
     public @Nullable ClassLoader classLoader;
     /**
      * The variable introduced to avoid reporting n^10 similar errors.
      * After error is reported counter is decremented. When it became 0 - errors should not be reported any more.
      *
      * volatile is required to ensure that concurrent threads will see changed value
      */
     private static volatile int errorsCounter = 10;
     /**
      * State information for each element.
      */
     public final class State {
         /**
          * Loader that owns this element.
          */
         private Loader loader;
         /**
          * Once {@link #loader} is completed, this receiver
          * receives the result.
          */
         private Receiver receiver;
         private Intercepter intercepter;
         /**
          * Object being unmarshalled by this {@link #loader}.
          */
         private Object target;
         /**
          * Hack for making JAXBElement unmarshalling work.
          *
          * <p>
          * While the unmarshalling is in progress, the {@link #target} field stores the object being unmarshalled.
          * This makes it convenient to keep track of the unmarshalling activity in context of XML infoset, but
          * since there's only one {@link State} per element, this mechanism only works when there's one object
          * per element, which breaks down when we have {@link JAXBElement}, since the presence of JAXBElement
          * requires that we have two objects unmarshalled (a JAXBElement X and a value object Y bound to an XML type.)
          *
          * <p>
          * So to make room for storing both, this {@link #backup} field is used. When we create X instance
          * in the above example, we set that to {@code state.prev.target} and displace its old value to
          * {@code state.prev.backup} (where Y goes to {@code state.target}.) Upon the completion of the unmarshalling
          * of Y, we revert this.
          *
          * <p>
          * While this attributes X incorrectly to its parent element, this preserves the parent/child
          * relationship between unmarshalled objects and {@link State} parent/child relationship, and
          * it thereby makes {@link Receiver} mechanism simpler.
          *
          * <p>
          * Yes, I know this is a hack, and no, I'm not proud of it.
          *
          * @see ElementBeanInfoImpl.IntercepterLoader#startElement(State, TagName)
          * @see ElementBeanInfoImpl.IntercepterLoader#intercept(State, Object)
          */
         private Object backup;
         /**
          * Number of {@link UnmarshallingContext#nsBind}s declared thus far.
          * (The value of {@link UnmarshallingContext#nsLen} when this state is pushed.
          */
         private int numNsDecl;
         /**
          * If this element has an element default value.
          *
          * This should be set by either a parent {@link Loader} when
          * {@link Loader#childElement(State, TagName)} is called
          * or by a child {@link Loader} when
          * {@link Loader#startElement(State, TagName)} is called.
          */
         private String elementDefaultValue;
         /**
          * {@link State} for the parent element
          *
          * {@link State} objects form a doubly linked list.
          */
         private State prev;
         private State next;
         private boolean nil = false;
         /**
          * specifies that we are working with mixed content
          */
         private boolean mixed = false;
         /**
          * Gets the context.
          */
         public UnmarshallingContext getContext() {
             return UnmarshallingContext.this;
         }
         @SuppressWarnings("LeakingThisInConstructor")
         private State(State prev) {
             this.prev = prev;
             if (prev!=null) {
                 prev.next = this;
                 if (prev.mixed) // parent is in mixed mode
                     this.mixed = true;
             }
         }
         private void push() {
             if (logger.isLoggable(Level.FINEST)) {
                 logger.log(Level.FINEST, "State.push");
             }
             if (next==null) {
                 assert current == this;
                 next = new State(this);
             }
             nil = false;
             State n = next;
             n.numNsDecl = nsLen;
             current = n;
         }
         private void pop() {
             if (logger.isLoggable(Level.FINEST)) {
                 logger.log(Level.FINEST, "State.pop");
             }
             assert prev!=null;
             loader = null;
             nil = false;
             mixed = false;
             receiver = null;
             intercepter = null;
             elementDefaultValue = null;
             target = null;
             current = prev;
             next = null;
         }
         public boolean isMixed() {
             return mixed;
         }
         public Object getTarget() {
             return target;
         }
         public void setLoader(Loader loader) {
             if (loader instanceof StructureLoader) // set mixed mode
                 mixed = !((StructureLoader)loader).getBeanInfo().hasElementOnlyContentModel();
             this.loader = loader;
         }
         public void setReceiver(Receiver receiver) {
             this.receiver = receiver;
         }
         public State getPrev() {
             return prev;
         }
         public void setIntercepter(Intercepter intercepter) {
             this.intercepter = intercepter;
         }
         public void setBackup(Object backup) {
             this.backup = backup;
         }
         public void setTarget(Object target) {
             this.target = target;
         }
         public Object getBackup() {
             return backup;
         }
         public boolean isNil() {
             return nil;
         }
         public void setNil(boolean nil) {
             this.nil = nil;
         }
         public Loader getLoader() {
             return loader;
         }
         public String getElementDefaultValue() {
             return elementDefaultValue;
         }
         public void setElementDefaultValue(String elementDefaultValue) {
             this.elementDefaultValue = elementDefaultValue;
         }
     }
     /**
      * Stub to the user-specified factory method.
      */
     private static class Factory {
         private final Object factorInstance;
         private final Method method;
         public Factory(Object factorInstance, Method method) {
             this.factorInstance = factorInstance;
             this.method = method;
         }
         public Object createInstance() throws SAXException {
             try {
                 return method.invoke(factorInstance);
             } catch (IllegalAccessException e) {
                 getInstance().handleError(e,false);
             } catch (InvocationTargetException e) {
                 getInstance().handleError(e,false);
             }
             return null; // can never be executed
         }
     }
     /**
      * Creates a new unmarshaller.
      *
      * @param assoc
      *      Must be both non-null when the unmarshaller does the
      *      in-place unmarshalling. Otherwise must be both null.
      */
     public UnmarshallingContext( UnmarshallerImpl _parent, AssociationMap assoc) {
         this.parent = _parent;
         this.assoc = assoc;
         this.root = this.current = new State(null);
     }
     public void reset(InfosetScanner scanner,boolean isInplaceMode, JaxBeanInfo expectedType, IDResolver idResolver) {
         this.scanner = scanner;
         this.isInplaceMode = isInplaceMode;
         this.expectedType = expectedType;
         this.idResolver = idResolver;
     }
     public JAXBContextImpl getJAXBContext() {
         return parent.context;
     }
     public State getCurrentState() {
         return current;
     }
     /**
      * On top of {@link JAXBContextImpl#selectRootLoader(State, TagName)},
      * this method also consults {@link ClassResolver}.
      *
      * @throws SAXException
      *      if {@link ValidationEventHandler} reported a failure.
      */
     public Loader selectRootLoader(State state, TagName tag) throws SAXException {
         try {
             Loader l = getJAXBContext().selectRootLoader(state, tag);
             if(l!=null)     return l;
             if(classResolver!=null) {
                 Class<?> clazz = classResolver.resolveElementName(tag.uri, tag.local);
                 if(clazz!=null) {
                     JAXBContextImpl enhanced = getJAXBContext().createAugmented(clazz);
                     JaxBeanInfo<?> bi = enhanced.getBeanInfo(clazz);
                     return bi.getLoader(enhanced,true);
                 }
             }
         } catch (RuntimeException e) {
             throw e;
         } catch (Exception e) {
             handleError(e);
         }
         return null;
     }
     public void clearStates() {
         State last = current;
         while (last.next != null) last = last.next;
         while (last.prev != null) {
             last.loader = null;
             last.nil = false;
             last.receiver = null;
             last.intercepter = null;
             last.elementDefaultValue = null;
             last.target = null;
             last = last.prev;
             last.next.prev = null;
             last.next = null;
         }
         current = last;
     }
     /**
      * User-specified factory methods.
      */
     private final Map<Class,Factory> factories = new HashMap<Class, Factory>();
     public void setFactories(Object factoryInstances) {
         factories.clear();
         if(factoryInstances==null) {
             return;
         }
         if(factoryInstances instanceof Object[]) {
             for( Object factory : (Object[])factoryInstances ) {
                 // look for all the public methods inlcuding derived ones
                 addFactory(factory);
             }
         } else {
             addFactory(factoryInstances);
         }
     }
     private void addFactory(Object factory) {
         for( Method m : factory.getClass().getMethods() ) {
             // look for methods whose signature is T createXXX()
             if(!m.getName().startsWith("create"))
                 continue;
             if(m.getParameterTypes().length>0)
                 continue;
             Class type = m.getReturnType();
             factories.put(type,new Factory(factory,m));
         }
     }
     @Override
     public void startDocument(LocatorEx locator, NamespaceContext nsContext) throws SAXException {
         if(locator!=null)
             this.locator = locator;
         this.environmentNamespaceContext = nsContext;
         // reset the object
         result = null;
         current = root;
         patchersLen=0;
         aborted = false;
         isUnmarshalInProgress = true;
         nsLen=0;
         if(expectedType!=null)
             root.loader = EXPECTED_TYPE_ROOT_LOADER;
         else
             root.loader = DEFAULT_ROOT_LOADER;
         idResolver.startDocument(this);
     }
     @Override
     public void startElement(TagName tagName) throws SAXException {
         pushCoordinator();
         try {
             _startElement(tagName);
         } finally {
             popCoordinator();
         }
     }
     private void _startElement(TagName tagName) throws SAXException {
         // remember the current element if we are interested in it.
         // because the inner peer might not be found while we consume
         // the enter element token, we need to keep this information
         // longer than this callback. That's why we assign it to a field.
         if( assoc!=null )
             currentElement = scanner.getCurrentElement();
         Loader h = current.loader;
         current.push();
         // tell the parent about the new child
         h.childElement(current,tagName);
         assert current.loader!=null;   // the childElement should register this
         // and tell the new child that you are activated
         current.loader.startElement(current,tagName);
     }
     @Override
     public void text(CharSequence pcdata) throws SAXException {
         pushCoordinator();
         try {
             if (current.elementDefaultValue != null) {
                 if (pcdata.length() == 0) {
                     // send the default value into the unmarshaller instead
                     pcdata = current.elementDefaultValue;
                 }
             }
             current.loader.text(current, pcdata);
         } finally {
             popCoordinator();
         }
     }
     @Override
     public final void endElement(TagName tagName) throws SAXException {
         pushCoordinator();
         try {
             State child = current;
             // tell the child that your time is up
             child.loader.leaveElement(child,tagName);
             // child.pop will erase them so store them now
             Object target = child.target;
             Receiver recv = child.receiver;
             Intercepter intercepter = child.intercepter;
             child.pop();
             // then let the parent know
             if(intercepter!=null)
                 target = intercepter.intercept(current,target);
             if(recv!=null)
                 recv.receive(current,target);
         } finally {
             popCoordinator();
         }
     }
     @Override
     public void endDocument() throws SAXException {
         runPatchers();
         idResolver.endDocument();
         isUnmarshalInProgress = false;
         currentElement = null;
         locator = DUMMY_INSTANCE;
         environmentNamespaceContext = null;
         // at the successful completion, scope must be all closed
         assert root==current;
     }
     /**
      * You should be always calling this through {@link TextPredictor}.
      */
     @Deprecated
     @Override
     public boolean expectText() {
         return current.loader.expectText;
     }
     /**
      * You should be always getting {@link TextPredictor} from {@link XmlVisitor}.
      */
     @Deprecated
     @Override
     public TextPredictor getPredictor() {
         return this;
     }
     @Override
     public UnmarshallingContext getContext() {
         return this;
     }
     /**
      * Gets the result of the unmarshalling
      */
     public Object getResult() throws UnmarshalException {
         if(isUnmarshalInProgress)
             throw new IllegalStateException();
         if(!aborted)       return result;
         // there was an error.
         throw new UnmarshalException((String)null);
     }
     void clearResult() {
         if (isUnmarshalInProgress) {
             throw new IllegalStateException();
         }
         result = null;
     }
     /**
      * Creates a new instance of the specified class.
      * In the unmarshaller, we need to check the user-specified factory class.
      */
     public Object createInstance( Class<?> clazz ) throws SAXException {
         if(!factories.isEmpty()) {
             Factory factory = factories.get(clazz);
             if(factory!=null)
                 return factory.createInstance();
         }
         return ClassFactory.create(clazz);
     }
     /**
      * Creates a new instance of the specified class.
      * In the unmarshaller, we need to check the user-specified factory class.
      */
     public Object createInstance( JaxBeanInfo beanInfo ) throws SAXException {
         if(!factories.isEmpty()) {
             Factory factory = factories.get(beanInfo.jaxbType);
             if(factory!=null)
                 return factory.createInstance();
         }
         try {
             return beanInfo.createInstance(this);
         } catch (IllegalAccessException e) {
             Loader.reportError("Unable to create an instance of "+beanInfo.jaxbType.getName(),e,false);
         } catch (InvocationTargetException e) {
             Loader.reportError("Unable to create an instance of "+beanInfo.jaxbType.getName(),e,false);
         } catch (InstantiationException e) {
             Loader.reportError("Unable to create an instance of "+beanInfo.jaxbType.getName(),e,false);
         }
         return null;    // can never be here
     }
 //
 //
 // error handling
 //
 //
     /**
      * Reports an error to the user, and asks if s/he wants
      * to recover. If the canRecover flag is false, regardless
      * of the client instruction, an exception will be thrown.
      *
      * Only if the flag is true and the user wants to recover from an error,
      * the method returns normally.
      *
      * The thrown exception will be catched by the unmarshaller.
      */
     public void handleEvent(ValidationEvent event, boolean canRecover ) throws SAXException {
         ValidationEventHandler eventHandler = parent.getEventHandler();
         boolean recover = eventHandler.handleEvent(event);
         // if the handler says "abort", we will not return the object
         // from the unmarshaller.getResult()
         if(!recover)    aborted = true;
         if( !canRecover || !recover )
             throw new SAXParseException2( event.getMessage(), locator,
                 new UnmarshalException(
                     event.getMessage(),
                     event.getLinkedException() ) );
     }
     @Override
     public boolean handleEvent(ValidationEvent event) {
         try {
             // if the handler says "abort", we will not return the object.
             boolean recover = parent.getEventHandler().handleEvent(event);
             if(!recover)    aborted = true;
             return recover;
         } catch( RuntimeException re ) {
             // if client event handler causes a runtime exception, then we
             // have to return false.
             return false;
         }
     }
     /**
      * Reports an exception found during the unmarshalling to the user.
      * This method is a convenience method that calls into
      * {@link #handleEvent(ValidationEvent, boolean)}
      */
     public void handleError(Exception e) throws SAXException {
         handleError(e,true);
     }
     public void handleError(Exception e,boolean canRecover) throws SAXException {
         handleEvent(new ValidationEventImpl(ValidationEvent.ERROR,e.getMessage(),locator.getLocation(),e),canRecover);
     }
     public void handleError(String msg) {
         handleEvent(new ValidationEventImpl(ValidationEvent.ERROR,msg,locator.getLocation()));
     }
     @Override
     protected ValidationEventLocator getLocation() {
         return locator.getLocation();
     }
     /**
      * Gets the current source location information in SAX {@link Locator}.
      * <p>
      * Sometimes the unmarshaller works against a different kind of XML source,
      * making this information meaningless.
      */
     public LocatorEx getLocator() { return locator; }
     /**
      * Called when there's no corresponding ID value.
      */
     public void errorUnresolvedIDREF(Object bean, String idref, LocatorEx loc) throws SAXException {
         handleEvent( new ValidationEventImpl(
             ValidationEvent.ERROR,
             Messages.UNRESOLVED_IDREF.format(idref),
             loc.getLocation()), true );
     }
 //
 //
 // ID/IDREF related code
 //
 //
     /**
      * Submitted patchers in the order they've submitted.
      * Many XML vocabulary doesn't use ID/IDREF at all, so we
      * initialize it with null.
      */
     private Patcher[] patchers = null;
     private int patchersLen = 0;
     /**
      * Adds a job that will be executed at the last of the unmarshalling.
      * This method is used to support ID/IDREF feature, but it can be used
      * for other purposes as well.
      *
      * @param   job
      *      The run method of this object is called.
      */
     public void addPatcher( Patcher job ) {
         // re-allocate buffer if necessary
         if( patchers==null )
             patchers = new Patcher[32];
         if( patchers.length == patchersLen ) {
             Patcher[] buf = new Patcher[patchersLen*2];
             System.arraycopy(patchers,0,buf,0,patchersLen);
             patchers = buf;
         }
         patchers[patchersLen++] = job;
     }
     /** Executes all the patchers. */
     private void runPatchers() throws SAXException {
         if( patchers!=null ) {
             for( int i=0; i<patchersLen; i++ ) {
                 patchers[i].run();
                 patchers[i] = null; // free memory
             }
         }
     }
     /**
      * Adds the object which is currently being unmarshalled
      * to the ID table.
      *
      * @return
      *      Returns the value passed as the parameter.
      *      This is a hack, but this makes it easier for ID
      *      transducer to do its job.
      */
     // TODO: what shall we do if the ID is already declared?
     //
     // throwing an exception is one way. Overwriting the previous one
     // is another way. The latter allows us to process invalid documents,
     // while the former makes it impossible to handle them.
     //
     // I prefer to be flexible in terms of invalid document handling,
     // so chose not to throw an exception.
     //
     // I believe this is an implementation choice, not the spec issue.
     // -kk
     public String addToIdTable( String id ) throws SAXException {
         // Hmm...
         // in cases such as when ID is used as an attribute, or as @XmlValue
         // the target wilil be current.target.
         // but in some other cases, such as when ID is used as a child element
         // or a value of JAXBElement, it's current.prev.target.
         // I don't know if this detection logic is complete
         Object o = current.target;
         if(o==null)
             o = current.prev.target;
         idResolver.bind(id,o);
         return id;
     }
     /**
      * Looks up the ID table and gets associated object.
      *
      * <p>
      * The exception thrown from {@link Callable#call()} means the unmarshaller should abort
      * right away.
      *
      * @see IDResolver#resolve(String, Class)
      */
     public Callable getObjectFromId( String id, Class targetType ) throws SAXException {
         return idResolver.resolve(id,targetType);
     }
 //
 //
 // namespace binding maintainance
 //
 //
     private String[] nsBind = new String[16];
     private int nsLen=0;
     @Override
     public void startPrefixMapping( String prefix, String uri ) {
         if(nsBind.length==nsLen) {
             // expand the buffer
             String[] n = new String[nsLen*2];
             System.arraycopy(nsBind,0,n,0,nsLen);
             nsBind=n;
         }
         nsBind[nsLen++] = prefix;
         nsBind[nsLen++] = uri;
     }
     @Override
     public void endPrefixMapping( String prefix ) {
         nsLen-=2;
     }
     private String resolveNamespacePrefix( String prefix ) {
         if(prefix.equals("xml"))
             return XMLConstants.XML_NS_URI;
         for( int i=nsLen-2; i>=0; i-=2 ) {
             if(prefix.equals(nsBind[i]))
                 return nsBind[i+1];
         }
         if(environmentNamespaceContext!=null)
             // temporary workaround until Zephyr fixes 6337180
             return environmentNamespaceContext.getNamespaceURI(prefix.intern());
         // by default, the default ns is bound to "".
         // but allow environmentNamespaceContext to take precedence
         if(prefix.equals(""))
             return "";
         // unresolved. error.
         return null;
     }
     /**
      * Returns a list of prefixes newly declared on the current element.
      *
      * @return
      *      A possible zero-length array of prefixes. The default prefix
      *      is represented by the empty string.
      */
     public String[] getNewlyDeclaredPrefixes() {
         return getPrefixList( current.prev.numNsDecl );
     }
     /**
      * Returns a list of all in-scope prefixes.
      *
      * @return
      *      A possible zero-length array of prefixes. The default prefix
      *      is represented by the empty string.
      */
     public String[] getAllDeclaredPrefixes() {
         return getPrefixList(0);
     }
     private String[] getPrefixList( int startIndex ) {
         int size = (current.numNsDecl - startIndex)/2;
         String[] r = new String[size];
         for( int i=0; i<r.length; i++ )
             r[i] = nsBind[startIndex+i*2];
         return r;
     }
     //  NamespaceContext2 implementation
     //
     @Override
     public Iterator<String> getPrefixes(String uri) {
         // TODO: could be implemented much faster
         // wrap it into unmodifiable list so that the remove method
         // will throw UnsupportedOperationException.
         return Collections.unmodifiableList(
             getAllPrefixesInList(uri)).iterator();
     }
     private List<String> getAllPrefixesInList(String uri) {
         List<String> a = new ArrayList<String>();
         if( uri==null )
             throw new IllegalArgumentException();
         if( uri.equals(XMLConstants.XML_NS_URI) ) {
             a.add(XMLConstants.XML_NS_PREFIX);
             return a;
         }
         if( uri.equals(XMLConstants.XMLNS_ATTRIBUTE_NS_URI) ) {
             a.add(XMLConstants.XMLNS_ATTRIBUTE);
             return a;
         }
         for( int i=nsLen-2; i>=0; i-=2 )
             if(uri.equals(nsBind[i+1]))
                 if( getNamespaceURI(nsBind[i]).equals(nsBind[i+1]) )
                     // make sure that this prefix is still effective.
                     a.add(nsBind[i]);
         return a;
     }
     @Override
     public String getPrefix(String uri) {
         if( uri==null )
             throw new IllegalArgumentException();
         if( uri.equals(XMLConstants.XML_NS_URI) )
             return XMLConstants.XML_NS_PREFIX;
         if( uri.equals(XMLConstants.XMLNS_ATTRIBUTE_NS_URI) )
             return XMLConstants.XMLNS_ATTRIBUTE;
         for( int i=nsLen-2; i>=0; i-=2 )
             if(uri.equals(nsBind[i+1]))
                 if( getNamespaceURI(nsBind[i]).equals(nsBind[i+1]) )
                     // make sure that this prefix is still effective.
                     return nsBind[i];
         if(environmentNamespaceContext!=null)
             return environmentNamespaceContext.getPrefix(uri);
         return null;
     }
     @Override
     public String getNamespaceURI(String prefix) {
         if (prefix == null)
             throw new IllegalArgumentException();
         if (prefix.equals(XMLConstants.XMLNS_ATTRIBUTE))
             return XMLConstants.XMLNS_ATTRIBUTE_NS_URI;
         return resolveNamespacePrefix(prefix);
     }
 //
 //
 //
 // scope management
 //
 //
 //
     private Scope[] scopes = new Scope[16];
     /**
      * Points to the top of the scope stack (=size-1).
      */
     private int scopeTop=0;
     {
         for( int i=0; i<scopes.length; i++ )
             scopes[i] = new Scope(this);
     }
     /**
      * Starts a new packing scope.
      *
      * <p>
      * This method allocates a specified number of fresh {@link Scope} objects.
      * They can be accessed by the {@link #getScope} method until the corresponding
      * {@link #endScope} method is invoked.
      *
      * <p>
      * A new scope will mask the currently active scope. Only one frame of {@link Scope}s
      * can be accessed at any given time.
      *
      * @param frameSize
      *      The # of slots to be allocated.
      */
     public void startScope(int frameSize) {
         scopeTop += frameSize;
         // reallocation
         if(scopeTop>=scopes.length) {
             Scope[] s = new Scope[Math.max(scopeTop+1,scopes.length*2)];
             System.arraycopy(scopes,0,s,0,scopes.length);
             for( int i=scopes.length; i<s.length; i++ )
                 s[i] = new Scope(this);
             scopes = s;
         }
     }
     /**
      * Ends the current packing scope.
      *
      * <p>
      * If any packing in progress will be finalized by this method.
      *
      * @param frameSize
      *      The same size that gets passed to the {@link #startScope(int)}
      *      method.
      */
     public void endScope(int frameSize) throws SAXException {
         try {
             for( ; frameSize>0; frameSize--, scopeTop-- )
                 scopes[scopeTop].finish();
         } catch (AccessorException e) {
             handleError(e);
             // the error might have left scopes in inconsistent state,
             // so replace them by fresh ones
             for( ; frameSize>0; frameSize-- )
                 scopes[scopeTop--] = new Scope(this);
         }
     }
     /**
      * Gets the currently active {@link Scope}.
      *
      * @param offset
      *      a number between [0,frameSize)
      *
      * @return
      *      always a valid {@link Scope} object.
      */
     public Scope getScope(int offset) {
         return scopes[scopeTop-offset];
     }
 //
 //
 //
 //
 //
 //
 //
     private static final Loader DEFAULT_ROOT_LOADER = new DefaultRootLoader();
     private static final Loader EXPECTED_TYPE_ROOT_LOADER = new ExpectedTypeRootLoader();
     /**
      * Root loader that uses the tag name and possibly its @xsi:type
      * to decide how to start unmarshalling.
      */
     private static final class DefaultRootLoader extends Loader implements Receiver {
         /**
          * Receives the root element and determines how to start
          * unmarshalling.
          */
         @Override
         public void childElement(UnmarshallingContext.State state, TagName ea) throws SAXException {
             Loader loader = state.getContext().selectRootLoader(state,ea);
             if(loader!=null) {
                 state.loader = loader;
                 state.receiver = this;
                 return;
             }
             // the registry doesn't know about this element.
             // try its xsi:type
             JaxBeanInfo beanInfo = XsiTypeLoader.parseXsiType(state, ea, null);
             if(beanInfo==null) {
                 // we don't even know its xsi:type
                 reportUnexpectedChildElement(ea,false);
                 return;
             }
             state.loader = beanInfo.getLoader(null,false);
             state.prev.backup = new JAXBElement<Object>(ea.createQName(),Object.class,null);
             state.receiver = this;
         }
         @Override
         public Collection<QName> getExpectedChildElements() {
             return getInstance().getJAXBContext().getValidRootNames();
         }
         @Override
         public void receive(State state, Object o) {
              if(state.backup!=null) {
                 ((JAXBElement<Object>)state.backup).setValue(o);
                 o = state.backup;
             }
             if (state.nil) {
                 ((JAXBElement<Object>)o).setNil(true);
             }
             state.getContext().result = o;
         }
     }
     /**
      * Root loader that uses {@link UnmarshallingContext#expectedType}
      * to decide how to start unmarshalling.
      */
     private static final class ExpectedTypeRootLoader extends Loader implements Receiver {
         /**
          * Receives the root element and determines how to start
          * unmarshalling.
          */
         @Override
         public void childElement(UnmarshallingContext.State state, TagName ea) {
             UnmarshallingContext context = state.getContext();
             // unmarshals the specified type
             QName qn = new QName(ea.uri,ea.local);
             state.prev.target = new JAXBElement(qn,context.expectedType.jaxbType,null,null);
             state.receiver = this;
             // this is bit wasteful, as in theory we should have each expectedType keep
             // nillable version --- but that increases the combination from two to four,
             // which adds the resident memory footprint. Since XsiNilLoader is small,
             // I intentionally allocate a new instance freshly.
             state.loader = new XsiNilLoader(context.expectedType.getLoader(null,true));
         }
         @Override
         public void receive(State state, Object o) {
             JAXBElement e = (JAXBElement)state.target;
             e.setValue(o);
             state.getContext().recordOuterPeer(e);
             state.getContext().result = e;
         }
     }
 //
 // in-place unmarshalling related capabilities
 //
     /**
      * Notifies the context about the inner peer of the current element.
      *
      * <p>
      * If the unmarshalling is building the association, the context
      * will use this information. Otherwise it will be just ignored.
      */
     public void recordInnerPeer(Object innerPeer) {
         if(assoc!=null)
             assoc.addInner(currentElement,innerPeer);
     }
     /**
      * Gets the inner peer JAXB object associated with the current element.
      *
      * @return
      *      null if the current element doesn't have an inner peer,
      *      or if we are not doing the in-place unmarshalling.
      */
     public Object getInnerPeer() {
         if(assoc!=null && isInplaceMode)
             return assoc.getInnerPeer(currentElement);
         else
             return null;
     }
     /**
      * Notifies the context about the outer peer of the current element.
      *
      * <p>
      * If the unmarshalling is building the association, the context
      * will use this information. Otherwise it will be just ignored.
      */
     public void recordOuterPeer(Object outerPeer) {
         if(assoc!=null)
             assoc.addOuter(currentElement,outerPeer);
     }
     /**
      * Gets the outer peer JAXB object associated with the current element.
      *
      * @return
      *      null if the current element doesn't have an inner peer,
      *      or if we are not doing the in-place unmarshalling.
      */
     public Object getOuterPeer() {
         if(assoc!=null && isInplaceMode)
             return assoc.getOuterPeer(currentElement);
         else
             return null;
     }
     /**
      * Gets the xmime:contentType value for the current object.
      *
      * @see JAXBContextImpl#getXMIMEContentType(Object)
      */
     public String getXMIMEContentType() {
         /*
             this won't work when the class is like
             class Foo {
                 @XmlValue Image img;
             }
             because the target will return Foo, not the class enclosing Foo
             which will have xmime:contentType
         */
         Object t = current.target;
         if(t==null)     return null;
         return getJAXBContext().getXMIMEContentType(t);
     }
     /**
      * When called from within the realm of the unmarshaller, this method
      * returns the current {@link UnmarshallingContext} in charge.
      */
     public static UnmarshallingContext getInstance() {
         return (UnmarshallingContext) Coordinator._getInstance();
     }
     /**
      * Allows to access elements which are expected in current state.
      * Useful for getting elements for current parent.
      *
      * @return
      */
     public Collection<QName> getCurrentExpectedElements() {
         pushCoordinator();
         try {
             State s = getCurrentState();
             Loader l = s.loader;
             return (l != null) ? l.getExpectedChildElements() : null;
         } finally {
             popCoordinator();
         }
     }
     /**
      * Allows to access attributes which are expected in current state.
      * Useful for getting attributes for current parent.
      *
      * @return
      */
     public Collection<QName> getCurrentExpectedAttributes() {
         pushCoordinator();
         try {
             State s = getCurrentState();
             Loader l = s.loader;
             return (l != null) ? l.getExpectedAttributes() : null;
         } finally {
             popCoordinator();
         }
     }
     /**
      * Gets StructureLoader if used as loader.
      * Useful when determining if element is mixed or not.
      *
      */
     public StructureLoader getStructureLoader() {
         if(current.loader instanceof StructureLoader)
             return (StructureLoader)current.loader;
         return null;
     }
     /**
      * Based on current {@link Logger} {@link Level} and errorCounter value determines if error should be reported.
      *
      * If the method called and return true it is expected that error will be reported. And that's why
      * errorCounter is automatically decremented during the check.
      *
      * NOT THREAD SAFE!!! In case of heave concurrency access several additional errors could be reported. It's not expected to be the
      * problem. Otherwise add synchronization here.
      *
      * @return true in case if {@link Level#FINEST} is set OR we haven't exceed errors reporting limit.
      */
     public boolean shouldErrorBeReported() throws SAXException {
         if (logger.isLoggable(Level.FINEST))
             return true;
         if (errorsCounter >= 0) {
             --errorsCounter;
             if (errorsCounter == 0) // it's possible to miss this because of concurrency. If required add synchronization here
                 handleEvent(new ValidationEventImpl(ValidationEvent.WARNING, Messages.ERRORS_LIMIT_EXCEEDED.format(),
                         getLocator().getLocation(), null), true);
         }
         return errorsCounter >= 0;
     }
 }

Mercurial > jdk8-mips64-public > jaxws / annotate

src/share/jaxws_classes/com/sun/xml/internal/bind/v2/runtime/unmarshaller/UnmarshallingContext.java@dc8316632248 (annotated)

src/share/jaxws_classes/com/sun/xml/internal/bind/v2/runtime/unmarshaller/UnmarshallingContext.java