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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);
}
}