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)

     * Alter the default state of the policy to act as an optional non-nillable null policy
     * @param aMapping
     * @param propertyName
     */
    private void setIsSetOptionalPolicyOnMapping(XMLNillableMapping aMapping, Object propertyName) {
      AbstractNullPolicy aNullPolicy = setIsSetPolicyOnMapping(aMapping, propertyName);
      // Alter unmarshal policy state
      aNullPolicy.setNullRepresentedByEmptyNode(false);
      aNullPolicy.setNullRepresentedByXsiNil(false);
      // Alter marshal policy state
      aNullPolicy.setMarshalNullRepresentation(XMLNullRepresentationType.EMPTY_NODE);//.ABSENT_NODE);
    }

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     * @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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         }


         @Override
         public Object getAttributeValueFromObject(Object object) throws DescriptorException {
            // If the policy is default (NullPolicy(ispfan=true, inrben=false, inrbxnn=false, XMLNullRep=ABSENT_NODE) return null
            AbstractNullPolicy value = ((XMLNillableMapping)object).getNullPolicy();
            if(value instanceof NullPolicy) {
                NullPolicy aPolicy = (NullPolicy)value;
                if(aPolicy.getIsSetPerformedForAbsentNode() && !aPolicy.isNullRepresentedByEmptyNode() //
                    && !aPolicy.isNullRepresentedByXsiNil() //
                    && aPolicy.getMarshalNullRepresentation().equals(XMLNullRepresentationType.ABSENT_NODE)) {

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

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            return false;
        }


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

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                        return true;
                    }
                }          
            }


            AbstractNullPolicy nullPolicy = xmlCompositeCollectionMapping.getNullPolicy();
            if(nullPolicy.isNullRepresentedByEmptyNode()) {
                String qnameString = xPathFragment.getLocalName();
                if(xPathFragment.getPrefix() != null) {
                    qnameString = xPathFragment.getPrefix()  + Constants.COLON + qnameString;
                }
                if(null != xmlDescriptor) {

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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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            return false;
        }
        CoreContainerPolicy cp = xmlAnyCollectionMapping.getContainerPolicy();
        Object collection = xmlAnyCollectionMapping.getAttributeAccessor().getAttributeValueFromObject(object);
        if (null == collection) {
            AbstractNullPolicy wrapperNP = xmlAnyCollectionMapping.getWrapperNullPolicy();
            if (wrapperNP != null && wrapperNP.getMarshalNullRepresentation().equals(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()  + Constants.COLON + qnameString;
                }
                if(null != xmlDescriptor) {

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Related Classes of org.eclipse.persistence.oxm.mappings.nullpolicy.AbstractNullPolicy

org.eclipse.persistence.internal.oxm.XMLAnyCollectionMappingNodeValue

org.eclipse.persistence.internal.oxm.XMLBinaryDataCollectionMappingNodeValue

org.eclipse.persistence.internal.oxm.XMLChoiceCollectionMappingMarshalNodeValue

org.eclipse.persistence.internal.oxm.XMLCompositeCollectionMappingNodeValue

org.eclipse.persistence.internal.oxm.XMLCompositeDirectCollectionMappingNodeValue

org.eclipse.persistence.internal.oxm.XMLCompositeObjectMappingNodeValue

org.eclipse.persistence.internal.oxm.XMLInlineBinaryHandler

org.eclipse.persistence.internal.oxm.XMLVariableXPathCollectionMappingNodeValue

org.eclipse.persistence.internal.oxm.XPathFragment

org.eclipse.persistence.internal.sessions.factories.ObjectPersistenceRuntimeXMLProject_11_1_1$NullPolicyAttributeAccessor

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