Examples of org.eclipse.persistence.oxm.mappings.nullpolicy.AbstractNullPolicy

Package org.eclipse.persistence.oxm.mappings.nullpolicy

Examples of org.eclipse.persistence.oxm.mappings.nullpolicy.AbstractNullPolicy

org.eclipse.persistence.oxm.mappings.nullpolicy.AbstractNullPolicy

PUBLIC: Description: This node null policy allows for the handling of various representations of null in XML documents.

Null policies have 2 concrete implementations:

NullPolicy (default implementation)
IsSetNullPolicy (keyed off isSet() state of the node)

Unmarshal Flag	Description
isSetPerformedForAbsentNode	This umarshal flag represents whether a set is done for absent nodes only.
isNullRepresentedByEmptyNode	If this unmarshal flag is false for empty nodes we set an empty Object for composite mappings, otherwise we set to null.
isNullRepresentedByXsiNil	If this unmarshal flag is false for xsi:nil nodes we ignore the xsi:nil attribute and treat as an empty node. Otherwise we set to null.

Marshal Enum	XMLNullRepresentationType Description
XSI_NIL	Nillable: Write out an xsi:nil="true" attribute.
ABSENT_NODE(default)	Optional: Write out no node.
EMPTY_NODE	Required: Write out an empty or node="" node.

Usage:
@see org.eclipse.persistence.internal.oxm.NullCapableValue @since Oracle TopLink 11g Release 1 (11.1.1)

     * @param aMapping
     * @param propertyName
     * @return
     */
    private AbstractNullPolicy setIsSetPolicyOnMapping(XMLNillableMapping aMapping, Object propertyName) {
        AbstractNullPolicy aNullPolicy = new IsSetNullPolicy();
        // Set the isSet method signature on policy
        ((IsSetNullPolicy)aNullPolicy).setIsSetMethodName(SDOConstants.SDO_ISSET_METHOD_NAME);
        // Set fields even though defaults are set
        //aNullPolicy.setMarshalNullRepresentation(XMLNullRepresentationType.EMPTY_NODE);
        // Parameter type is always String

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                element = convertObjectValueToDataValue(element, session, ((XMLRecord) row).getMarshaller());


                if (element != null) {
                    elements.addElement(element);
                } else if(!usesSingleNode()){
                    AbstractNullPolicy nullPolicy = getNullPolicy();
                    if (nullPolicy == null) {
                        elements.addElement(null);
                    } else {
                        if (nullPolicy.getMarshalNullRepresentation() == XMLNullRepresentationType.XSI_NIL) {
                            elements.addElement(XMLRecord.NIL);
                        } else if (nullPolicy.getMarshalNullRepresentation() == XMLNullRepresentationType.ABSENT_NODE) {
                            // Do nothing
                        } else {
                            elements.addElement(XMLConstants.EMPTY_STRING);
                        }
                    }

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            return false;
        }
        
        Object value = xmlChoiceCollectionMapping.getAttributeValueFromObject(object);
        if(value == null) {
            AbstractNullPolicy wrapperNP = xmlChoiceCollectionMapping.getWrapperNullPolicy();
            if (wrapperNP != null && wrapperNP.getMarshalNullRepresentation() == XMLNullRepresentationType.XSI_NIL) {
                marshalRecord.nilSimple(namespaceResolver);
                return true;
            } else {
                return false;
            }

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            //   whether we are in one of empty/simple/complex state.
            //   Control is returned to the UnmarshalHandler after creation of (1) or (2) above is started.
            //   Object creation was deferred to the DeferredContentHandler
            //
            // Check if we need to create the DeferredContentHandler based on policy state
            AbstractNullPolicy nullPolicy = xmlCompositeObjectMapping.getNullPolicy();
            if(nullPolicy.isNullRepresentedByEmptyNode()) {
                String qnameString = xPathFragment.getLocalName();
                if(xPathFragment.getPrefix() != null) {
                    qnameString = xPathFragment.getPrefix()  + XMLConstants.COLON + qnameString;
                }
                if(null != xmlDescriptor) {
                    // Process null capable value
                    CompositeObjectMappingContentHandler aHandler = new CompositeObjectMappingContentHandler(//
                        unmarshalRecord, this, xmlCompositeObjectMapping, atts, xPathFragment, xmlDescriptor);
                    // Send control to the handler
                    aHandler.startElement(xPathFragment.getNamespaceURI(), xPathFragment.getLocalName(), qnameString, atts);
                    XMLReader xmlReader = unmarshalRecord.getXMLReader();
                    xmlReader.setContentHandler(aHandler);
                    xmlReader.setLexicalHandler(aHandler);
                }
            } else {
                if (nullPolicy.isNullRepresentedByXsiNil() && unmarshalRecord.isNil()) {
                    xmlCompositeObjectMapping.setAttributeValueInObject(unmarshalRecord.getCurrentObject(), null);
                } else {
                    XMLField xmlFld = (XMLField)this.xmlCompositeObjectMapping.getField();
                    if (xmlFld.hasLastXPathFragment()) {
                        unmarshalRecord.setLeafElementType(xmlFld.getLastXPathFragment().getLeafElementType());

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        if (xmlBinaryDataCollectionMapping.isReadOnly()) {
            return false;
        }
        Object collection = xmlBinaryDataCollectionMapping.getAttributeAccessor().getAttributeValueFromObject(object);
        if (null == collection) {
            AbstractNullPolicy wrapperNP = xmlBinaryDataCollectionMapping.getWrapperNullPolicy();
            if (wrapperNP != null && wrapperNP.getMarshalNullRepresentation() == XMLNullRepresentationType.XSI_NIL) {
                marshalRecord.nilSimple(namespaceResolver);
                return true;
            } else {
                return false;
            }

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    }


  @Override
  public boolean marshalSingleValue(XPathFragment xPathFragment, MarshalRecord marshalRecord, Object object, Object objectValue, CoreAbstractSession session, NamespaceResolver namespaceResolver, MarshalContext marshalContext) {
        if(objectValue == null) {
            AbstractNullPolicy nullPolicy = xmlBinaryDataCollectionMapping.getNullPolicy();
            if (nullPolicy.getMarshalNullRepresentation() != XMLNullRepresentationType.ABSENT_NODE) {
                XPathNode holderXPathNode = new XPathNode();
                holderXPathNode.setXPathFragment(xPathFragment);
                marshalRecord.addGroupingElement(holderXPathNode);
                boolean returnVal = xmlBinaryDataCollectionMapping.getNullPolicy().directMarshal(xPathFragment, marshalRecord, object, session, namespaceResolver);
                if(returnVal){

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        boolean inline = false;
        for (Object iter = cp.iteratorFor(attributeValue); cp.hasNext(iter);) {
            Object element = cp.next(iter, session);
            element = getValueToWrite(element, object, record, field, includeField, session);
            if(element == null){
                AbstractNullPolicy nullPolicy = getNullPolicy();
                if (nullPolicy == null) {
                    elements.addElement(null);
                } else {
                    if (nullPolicy.getMarshalNullRepresentation() == XMLNullRepresentationType.XSI_NIL) {
                        elements.addElement(XMLRecord.NIL);
                    } else if (nullPolicy.getMarshalNullRepresentation() == XMLNullRepresentationType.ABSENT_NODE) {
                        // Do nothing
                    } else {
                        elements.addElement(XMLConstants.EMPTY_STRING);
                    }
                }

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            if(areEquals(pType, Object.class)) {
                xmlField.setIsTypedTextField(true);
                xmlField.setSchemaType(XMLConstants.ANY_TYPE_QNAME);
            }
            DatabaseMapping nestedMapping;
            AbstractNullPolicy nullPolicy = null;
            if(isCollection){
                XMLChoiceCollectionMapping xmlChoiceCollectionMapping = (XMLChoiceCollectionMapping) mapping;
                xmlChoiceCollectionMapping.addChoiceElement(xmlField, element.getJavaTypeName());
                nestedMapping = (DatabaseMapping) xmlChoiceCollectionMapping.getChoiceElementMappings().get(xmlField);
                if(nestedMapping.isAbstractCompositeCollectionMapping()){
                    ((XMLCompositeCollectionMapping)nestedMapping).setKeepAsElementPolicy(UnmarshalKeepAsElementPolicy.KEEP_UNKNOWN_AS_ELEMENT);
                    nullPolicy = ((XMLCompositeCollectionMapping)nestedMapping).getNullPolicy();
                }


                if (nestedMapping.isAbstractCompositeDirectCollectionMapping()) {
                    XMLCompositeDirectCollectionMapping nestedCompositeDirectCollectionMapping = (XMLCompositeDirectCollectionMapping) nestedMapping;
                    nullPolicy = nestedCompositeDirectCollectionMapping.getNullPolicy();
                    if(pType.isEnum()) {
                        TypeInfo enumTypeInfo = typeInfo.get(pType.getQualifiedName());
                        nestedCompositeDirectCollectionMapping.setValueConverter(buildJAXBEnumTypeConverter(nestedCompositeDirectCollectionMapping, (EnumTypeInfo) enumTypeInfo));
                    }
                    if(element.isList()){
                        XMLListConverter listConverter = new XMLListConverter();
                        listConverter.setObjectClassName(element.getJavaType().getQualifiedName());
                        ((XMLCompositeDirectCollectionMapping)nestedMapping).setValueConverter(listConverter); 
                    }
                }else if(nestedMapping instanceof XMLBinaryDataCollectionMapping){
                    nullPolicy =  ((XMLBinaryDataCollectionMapping)nestedMapping).getNullPolicy();
                }


              
            } else {
                XMLChoiceObjectMapping xmlChoiceObjectMapping = (XMLChoiceObjectMapping) mapping;
                xmlChoiceObjectMapping.addChoiceElement(xmlField, element.getJavaTypeName());
                nestedMapping = (DatabaseMapping) xmlChoiceObjectMapping.getChoiceElementMappings().get(xmlField);
                if(pType.isEnum()) {
                    TypeInfo enumTypeInfo = typeInfo.get(pType.getQualifiedName());
                    ((XMLDirectMapping)nestedMapping).setConverter(buildJAXBEnumTypeConverter(nestedMapping, (EnumTypeInfo) enumTypeInfo));
                }
                if(nestedMapping.isAbstractCompositeObjectMapping()){
                    ((XMLCompositeObjectMapping)nestedMapping).setKeepAsElementPolicy(UnmarshalKeepAsElementPolicy.KEEP_UNKNOWN_AS_ELEMENT);
                    nullPolicy = ((XMLCompositeObjectMapping)nestedMapping).getNullPolicy();


                }else if(nestedMapping instanceof XMLBinaryDataMapping){
                    nullPolicy = ((XMLBinaryDataMapping)nestedMapping).getNullPolicy();
                }else if(nestedMapping instanceof XMLDirectMapping){
                    nullPolicy = ((XMLDirectMapping)nestedMapping).getNullPolicy();
                }
                
            }
            if(nullPolicy != null){
                nullPolicy.setNullRepresentedByEmptyNode(false);
                nullPolicy.setMarshalNullRepresentation(XMLNullRepresentationType.XSI_NIL);
                nullPolicy.setNullRepresentedByXsiNil(true);
            }
            if (!element.isXmlRootElement()) {
                Class scopeClass = element.getScopeClass();
                if (scopeClass == javax.xml.bind.annotation.XmlElementDecl.GLOBAL.class){
                    scopeClass = JAXBElement.GlobalScope.class;

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     * @return
     * @see org.eclipse.persistence.oxm.mappings.nullpolicy.AbstractNullPolicy
     * @see org.eclipse.persistence.jaxb.xmlmodel.XmlAbstractNullPolicy
     */
    private AbstractNullPolicy getNullPolicyFromProperty(Property property, NamespaceResolver nsr) {
        AbstractNullPolicy absNullPolicy = null;
        XmlAbstractNullPolicy xmlAbsNullPolicy = property.getNullPolicy();


        // policy is assumed to be one of XmlNullPolicy or XmlIsSetNullPolicy
        if (xmlAbsNullPolicy instanceof XmlNullPolicy) {
            XmlNullPolicy xmlNullPolicy = (XmlNullPolicy) xmlAbsNullPolicy;
            NullPolicy nullPolicy = new NullPolicy();
            nullPolicy.setSetPerformedForAbsentNode(xmlNullPolicy.isIsSetPerformedForAbsentNode());
            absNullPolicy = nullPolicy;
        } else {
            XmlIsSetNullPolicy xmlIsSetNullPolicy = (XmlIsSetNullPolicy) xmlAbsNullPolicy;
            IsSetNullPolicy isSetNullPolicy = new IsSetNullPolicy();
            isSetNullPolicy.setIsSetMethodName(xmlIsSetNullPolicy.getIsSetMethodName());
            // handle isSetParams
            ArrayList<Object> parameters = new ArrayList<Object>();
            ArrayList<Class> parameterTypes = new ArrayList<Class>();
            List<XmlIsSetNullPolicy.IsSetParameter> params = xmlIsSetNullPolicy.getIsSetParameter();
            for (XmlIsSetNullPolicy.IsSetParameter param : params) {
                String valueStr = param.getValue();
                String typeStr = param.getType();
                // create a conversion manager instance with the helper's loader
                XMLConversionManager mgr = new XMLConversionManager();
                mgr.setLoader(helper.getClassLoader());
                // handle parameter type
                Class typeClass = mgr.convertClassNameToClass(typeStr);
                // handle parameter value
                Object parameterValue = mgr.convertObject(valueStr, typeClass);
                parameters.add(parameterValue);
                parameterTypes.add(typeClass);
            }
            isSetNullPolicy.setIsSetParameters(parameters.toArray());
            isSetNullPolicy.setIsSetParameterTypes(parameterTypes.toArray(new Class[parameterTypes.size()]));
            absNullPolicy = isSetNullPolicy;
        }
        // handle commmon settings
        absNullPolicy.setMarshalNullRepresentation(XMLNullRepresentationType.valueOf(xmlAbsNullPolicy.getNullRepresentationForXml().name()));
        absNullPolicy.setNullRepresentedByEmptyNode(xmlAbsNullPolicy.isEmptyNodeRepresentsNull());
        boolean xsiRepresentsNull = xmlAbsNullPolicy.isXsiNilRepresentsNull();
        if (xsiRepresentsNull) {
            absNullPolicy.setNullRepresentedByXsiNil(true);
        }


        return absNullPolicy;
    }

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      * Alter the default state of the policy to act as a nillable null policy
     * @param aMapping
     * @param propertyName
      */
    private void setIsSetNillablePolicyOnMapping(XMLNillableMapping aMapping, Object propertyName) {
      AbstractNullPolicy aNullPolicy = setIsSetPolicyOnMapping(aMapping, propertyName);
      // Alter unmarshal policy state
      aNullPolicy.setNullRepresentedByEmptyNode(false);
      aNullPolicy.setNullRepresentedByXsiNil(true);
      // Alter marshal policy state
      aNullPolicy.setMarshalNullRepresentation(XMLNullRepresentationType.XSI_NIL);
    }

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org.eclipse.persistence.internal.oxm.XMLBinaryDataCollectionMappingNodeValue

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