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package com.sun.jersey.json.impl;

import java.lang.reflect.Type;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.xml.bind.JAXBContext;
import javax.xml.namespace.QName;

import com.sun.xml.bind.v2.model.runtime.RuntimePropertyInfo;
import com.sun.xml.bind.v2.model.runtime.RuntimeReferencePropertyInfo;
import com.sun.xml.bind.v2.runtime.XMLSerializer;
import com.sun.xml.bind.v2.runtime.property.Property;
import com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallingContext;

/**
 * Implementation of {@code JaxbXmlDocumentStructure} for JAXB RI provider.
 * 

* Note: If you're changing this class consider changing {@link JaxbJdkXmlStructure} as well. * * @author Jakub Podlesak (jakub.podlesak at oracle.com) * @author Michal Gajdos (michal.gajdos at oracle.com) */ public class JaxbRiXmlStructure extends DefaultJaxbXmlDocumentStructure { private static class NodeWrapper { private final NodeWrapper parent; private final RuntimePropertyInfo runtimePropertyInfo; private NodeWrapper(NodeWrapper parent, RuntimePropertyInfo runtimePropertyInfo) { this.parent = parent; this.runtimePropertyInfo = runtimePropertyInfo; } @Override public int hashCode() { int hash = 13; hash += (parent == null ? 0 : parent.hashCode()); hash += (runtimePropertyInfo == null ? 0 : runtimePropertyInfo.hashCode()); return hash; } @Override public boolean equals(Object obj) { if (this == obj) { return true; } if (!(obj instanceof NodeWrapper)) { return false; } final NodeWrapper other = (NodeWrapper) obj; return runtimePropertyInfo == other.runtimePropertyInfo && parent == other.parent; } } private Map qNamesOfExpElems = new HashMap(); private Map qNamesOfExpAttrs = new HashMap(); private LinkedList processedNodes = new LinkedList(); private final boolean isReader; public JaxbRiXmlStructure(JAXBContext jaxbContext, Class expectedType, boolean isReader) { super(jaxbContext, expectedType, isReader); this.isReader = isReader; } @Override public Collection getExpectedElements() { try { return UnmarshallingContext.getInstance().getCurrentExpectedElements(); } catch (NullPointerException npe) { // TODO: need to check what could be done in JAXB in order to prevent the npe // thrown from com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallingContext#1206 } // something went wrong - return empty list return Collections.emptyList(); } @Override public Collection getExpectedAttributes() { if (JSONHelper.isNaturalNotationEnabled()) { try { return UnmarshallingContext.getInstance().getCurrentExpectedAttributes(); } catch (NullPointerException npe) { // thrown from com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallingContext } catch (NoSuchMethodError nsme) { // thrown when JAXB version is less than 2.1.12 Logger.getLogger(getClass().getName()) .log(Level.SEVERE, com.sun.jersey.json.impl.ImplMessages.ERROR_JAXB_RI_2_1_12_MISSING(), nsme); } } // something went wrong - return empty list return Collections.emptyList(); } @Override public Map getExpectedElementsMap() { final Collection expectedElements = getExpectedElements(); if (!expectedElements.isEmpty()) { qNamesOfExpElems = qnameCollectionToMap(expectedElements, true); } return qNamesOfExpElems; } @Override public Map getExpectedAttributesMap() { final Collection expectedAttributes = getExpectedAttributes(); if (!expectedAttributes.isEmpty()) { qNamesOfExpAttrs = qnameCollectionToMap(expectedAttributes, false); } return qNamesOfExpAttrs; } @Override public boolean canHandleAttributes() { return JSONHelper.isNaturalNotationEnabled(); } @Override public Type getEntityType(QName entity, boolean isAttribute) { final NodeWrapper peek = processedNodes.getLast(); return peek.runtimePropertyInfo == null ? null : peek.runtimePropertyInfo.getRawType(); } @Override public Type getIndividualType() { final NodeWrapper peek = processedNodes.getLast(); return peek.runtimePropertyInfo == null ? null : (peek.runtimePropertyInfo.isCollection() ? peek.runtimePropertyInfo.getIndividualType() : null); } @Override public void startElement(final QName name) { if (!isReader) { processedNodes.add(new NodeWrapper(processedNodes.isEmpty() ? null : processedNodes.getLast(), getCurrentElementRuntimePropertyInfo())); } } @Override public void handleAttribute(final QName attributeName, final String value) { startElement(attributeName); } private RuntimePropertyInfo getCurrentElementRuntimePropertyInfo() { final XMLSerializer xs = XMLSerializer.getInstance(); final Property cp = (xs == null) ? null : xs.getCurrentProperty(); return (cp == null) ? null : cp.getInfo(); } @Override public boolean isArrayCollection() { RuntimePropertyInfo runtimePropertyInfo = isReader ? null : getCurrentElementRuntimePropertyInfo(); if (runtimePropertyInfo == null && !processedNodes.isEmpty()) { final NodeWrapper peek = processedNodes.getLast(); runtimePropertyInfo = peek.runtimePropertyInfo; } return runtimePropertyInfo != null && runtimePropertyInfo.isCollection() && !isWildcardElement(runtimePropertyInfo); } @Override public boolean isSameArrayCollection() { final int size = processedNodes.size(); if (size >= 2) { final NodeWrapper last = processedNodes.getLast(); final NodeWrapper beforeLast = processedNodes.get(size - 2); if (last.equals(beforeLast)) { return true; } } return false; } @Override public boolean hasSubElements() { if (isReader) { return !getExpectedElements().isEmpty(); } else { final RuntimePropertyInfo rpi = getCurrentElementRuntimePropertyInfo(); return !processedNodes.isEmpty() && (rpi == null || (rpi.elementOnlyContent())); } } @Override public void endElement(QName name) { if (!isReader) { processedNodes.removeLast(); } } private boolean isWildcardElement(RuntimePropertyInfo ri) { return (ri instanceof RuntimeReferencePropertyInfo) && (((RuntimeReferencePropertyInfo)ri).getWildcard() != null); } }





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