author | aefimov |
Thu, 16 Feb 2017 13:14:39 +0300 | |
changeset 43852 | 93a527059d8a |
parent 36263 | d5333008e409 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package com.sun.xml.internal.bind.v2.runtime.unmarshaller; |
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import java.util.Collection; |
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import java.util.HashMap; |
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import java.util.Map; |
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import javax.xml.namespace.QName; |
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import com.sun.xml.internal.bind.Util; |
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import com.sun.xml.internal.bind.api.AccessorException; |
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import com.sun.xml.internal.bind.api.JAXBRIContext; |
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import com.sun.xml.internal.bind.v2.WellKnownNamespace; |
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import com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl; |
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import com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl; |
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import com.sun.xml.internal.bind.v2.runtime.JaxBeanInfo; |
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import com.sun.xml.internal.bind.v2.runtime.property.AttributeProperty; |
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import com.sun.xml.internal.bind.v2.runtime.property.Property; |
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import com.sun.xml.internal.bind.v2.runtime.property.StructureLoaderBuilder; |
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import com.sun.xml.internal.bind.v2.runtime.property.UnmarshallerChain; |
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import com.sun.xml.internal.bind.v2.runtime.reflect.Accessor; |
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import com.sun.xml.internal.bind.v2.runtime.reflect.TransducedAccessor; |
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import com.sun.xml.internal.bind.v2.util.QNameMap; |
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import java.util.Iterator; |
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import org.xml.sax.Attributes; |
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import org.xml.sax.SAXException; |
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/** |
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* Loads children of an element. |
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* |
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* <p> |
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* This loader works with a single {@link JaxBeanInfo} and handles |
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* attributes, child elements, or child text. |
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* |
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* @author Kohsuke Kawaguchi |
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*/ |
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public final class StructureLoader extends Loader { |
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/** |
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* This map statically stores information of the |
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* unmarshaller loader and can be used while unmarshalling |
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* Since creating new QNames is expensive use this optimized |
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* version of the map |
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*/ |
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private final QNameMap<ChildLoader> childUnmarshallers = new QNameMap<ChildLoader>(); |
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/** |
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* Loader that processes elements that didn't match anf of the {@link #childUnmarshallers}. |
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* Can be null. |
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*/ |
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private /*final*/ ChildLoader catchAll; |
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/** |
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* If we have a loader for processing text. Otherwise null. |
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*/ |
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private /*final*/ ChildLoader textHandler; |
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/** |
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* Unmarshallers for attribute values. |
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* May be null if no attribute is expected and {@link #attCatchAll}==null. |
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*/ |
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private /*final*/ QNameMap<TransducedAccessor> attUnmarshallers; |
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/** |
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* This will receive all the attributes |
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* that were not processed. Never be null. |
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*/ |
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private /*final*/ Accessor<Object,Map<QName,String>> attCatchAll; |
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private final JaxBeanInfo beanInfo; |
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/** |
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* The number of scopes this dispatcher needs to keep active. |
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*/ |
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private /*final*/ int frameSize; |
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// this class is potentially useful for general audience, not just for ClassBeanInfoImpl, |
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// but since right now that is the only user, we make the construction code very specific |
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// to ClassBeanInfoImpl. See rev.1.5 of this file for the original general purpose definition. |
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public StructureLoader(ClassBeanInfoImpl beanInfo) { |
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super(true); |
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this.beanInfo = beanInfo; |
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} |
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/** |
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* Completes the initialization. |
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* |
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* <p> |
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* To fix the cyclic reference issue, the main part of the initialization needs to be done |
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* after a {@link StructureLoader} is set to {@link ClassBeanInfoImpl#loader}. |
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*/ |
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public void init( JAXBContextImpl context, ClassBeanInfoImpl beanInfo, Accessor<?,Map<QName,String>> attWildcard) { |
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UnmarshallerChain chain = new UnmarshallerChain(context); |
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for (ClassBeanInfoImpl bi = beanInfo; bi != null; bi = bi.superClazz) { |
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for (int i = bi.properties.length - 1; i >= 0; i--) { |
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Property p = bi.properties[i]; |
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switch(p.getKind()) { |
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case ATTRIBUTE: |
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if(attUnmarshallers==null) |
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attUnmarshallers = new QNameMap<TransducedAccessor>(); |
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AttributeProperty ap = (AttributeProperty) p; |
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attUnmarshallers.put(ap.attName.toQName(),ap.xacc); |
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break; |
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case ELEMENT: |
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case REFERENCE: |
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case MAP: |
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case VALUE: |
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p.buildChildElementUnmarshallers(chain,childUnmarshallers); |
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break; |
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} |
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} |
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} |
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this.frameSize = chain.getScopeSize(); |
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textHandler = childUnmarshallers.get(StructureLoaderBuilder.TEXT_HANDLER); |
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catchAll = childUnmarshallers.get(StructureLoaderBuilder.CATCH_ALL); |
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if(attWildcard!=null) { |
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attCatchAll = (Accessor<Object,Map<QName,String>>) attWildcard; |
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// we use attUnmarshallers==null as a sign to skip the attribute processing |
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// altogether, so if we have an att wildcard we need to have an empty qname map. |
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if(attUnmarshallers==null) |
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attUnmarshallers = EMPTY; |
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} else { |
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attCatchAll = null; |
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} |
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} |
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@Override |
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public void startElement(UnmarshallingContext.State state, TagName ea) throws SAXException { |
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UnmarshallingContext context = state.getContext(); |
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// create the object to unmarshal |
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Object child; |
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assert !beanInfo.isImmutable(); |
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// let's see if we can reuse the existing peer object |
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child = context.getInnerPeer(); |
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if(child != null && beanInfo.jaxbType!=child.getClass()) |
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child = null; // unexpected type. |
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if(child != null) |
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beanInfo.reset(child,context); |
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if(child == null) |
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child = context.createInstance(beanInfo); |
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context.recordInnerPeer(child); |
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state.setTarget(child); |
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fireBeforeUnmarshal(beanInfo, child, state); |
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context.startScope(frameSize); |
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if(attUnmarshallers!=null) { |
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Attributes atts = ea.atts; |
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for (int i = 0; i < atts.getLength(); i ++){ |
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String auri = atts.getURI(i); |
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// may be empty string based on parser settings |
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String alocal = atts.getLocalName(i); |
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if ("".equals(alocal)) { |
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alocal = atts.getQName(i); |
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} |
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String avalue = atts.getValue(i); |
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TransducedAccessor xacc = attUnmarshallers.get(auri, alocal); |
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try { |
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if(xacc!=null) { |
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xacc.parse(child,avalue); |
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} else if (attCatchAll!=null) { |
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String qname = atts.getQName(i); |
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if(atts.getURI(i).equals(WellKnownNamespace.XML_SCHEMA_INSTANCE)) |
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continue; // xsi:* attributes are meant to be processed by us, not by user apps. |
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Object o = state.getTarget(); |
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Map<QName,String> map = attCatchAll.get(o); |
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if(map==null) { |
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// TODO: use ClassFactory.inferImplClass(sig,knownImplClasses) |
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// if null, create a new map. |
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if(attCatchAll.valueType.isAssignableFrom(HashMap.class)) |
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map = new HashMap<QName,String>(); |
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else { |
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// we don't know how to create a map for this. |
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// report an error and back out |
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context.handleError(Messages.UNABLE_TO_CREATE_MAP.format(attCatchAll.valueType)); |
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return; |
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} |
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attCatchAll.set(o,map); |
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} |
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String prefix; |
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int idx = qname.indexOf(':'); |
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if(idx<0) prefix=""; |
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else prefix=qname.substring(0,idx); |
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map.put(new QName(auri,alocal,prefix),avalue); |
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} |
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} catch (AccessorException e) { |
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handleGenericException(e,true); |
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} |
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} |
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} |
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} |
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@Override |
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public void childElement(UnmarshallingContext.State state, TagName arg) throws SAXException { |
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ChildLoader child = childUnmarshallers.get(arg.uri,arg.local); |
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if(child == null) { |
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Boolean backupWithParentNamespace = ((JAXBContextImpl) state.getContext().getJAXBContext()).backupWithParentNamespace; |
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backupWithParentNamespace = backupWithParentNamespace != null |
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? backupWithParentNamespace |
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: Boolean.parseBoolean(Util.getSystemProperty(JAXBRIContext.BACKUP_WITH_PARENT_NAMESPACE)); |
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if ((beanInfo != null) && (beanInfo.getTypeNames() != null) && backupWithParentNamespace) { |
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Iterator<?> typeNamesIt = beanInfo.getTypeNames().iterator(); |
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QName parentQName = null; |
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if ((typeNamesIt != null) && (typeNamesIt.hasNext()) && (catchAll == null)) { |
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parentQName = (QName) typeNamesIt.next(); |
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String parentUri = parentQName.getNamespaceURI(); |
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child = childUnmarshallers.get(parentUri, arg.local); |
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} |
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} |
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if (child == null) { |
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child = catchAll; |
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if(child==null) { |
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super.childElement(state,arg); |
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return; |
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} |
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} |
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} |
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state.setLoader(child.loader); |
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state.setReceiver(child.receiver); |
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} |
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@Override |
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public Collection<QName> getExpectedChildElements() { |
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return childUnmarshallers.keySet(); |
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} |
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@Override |
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public Collection<QName> getExpectedAttributes() { |
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return attUnmarshallers.keySet(); |
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} |
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@Override |
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public void text(UnmarshallingContext.State state, CharSequence text) throws SAXException { |
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if(textHandler!=null) |
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textHandler.loader.text(state,text); |
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} |
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@Override |
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public void leaveElement(UnmarshallingContext.State state, TagName ea) throws SAXException { |
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state.getContext().endScope(frameSize); |
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fireAfterUnmarshal(beanInfo, state.getTarget(), state.getPrev()); |
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} |
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private static final QNameMap<TransducedAccessor> EMPTY = new QNameMap<TransducedAccessor>(); |
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public JaxBeanInfo getBeanInfo() { |
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return beanInfo; |
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} |
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} |