Examples with XPathFragment org.eclipse.persistence.internal.oxm.XPathFragment used on opensource projects

Example 1 with XPathFragment

use of org.eclipse.persistence.internal.oxm.XPathFragment in project eclipselink by eclipse-ee4j.

the class JsonSchemaGenerator method generateProperty.

private Property generateProperty(Mapping next, XMLDescriptor descriptor, Map<String, Property> properties) {
    Property prop = null;
    if (next.isCollectionMapping()) {
        if (next instanceof CollectionReferenceMapping) {
            CollectionReferenceMapping mapping = (CollectionReferenceMapping) next;
            Set<XMLField> sourceFields = mapping.getSourceToTargetKeyFieldAssociations().keySet();
            XMLDescriptor reference = (XMLDescriptor) mapping.getReferenceDescriptor();
            for (XMLField nextField : sourceFields) {
                XPathFragment frag = nextField.getXPathFragment();
                String propertyName = getNameForFragment(frag);
                XMLField targetField = (XMLField) mapping.getSourceToTargetKeyFieldAssociations().get(nextField);
                Class<?> type = CoreClassConstants.STRING;
                if (reference != null) {
                    type = getTypeForTargetField(targetField, reference);
                }
                prop = properties.get(propertyName);
                if (prop == null) {
                    prop = new Property();
                    prop.setName(propertyName);
                }
                Property nestedProperty = getNestedPropertyForFragment(frag, prop);
                nestedProperty.setType(JsonType.ARRAY);
                nestedProperty.setItem(new Property());
                nestedProperty.getItem().setType(getJsonTypeForJavaType(type));
                if (!properties.containsKey(prop.getName())) {
                    properties.put(prop.getName(), prop);
                }
            }
            return prop;
        } else if (next.isAbstractCompositeCollectionMapping()) {
            CompositeCollectionMapping mapping = (CompositeCollectionMapping) next;
            XMLField field = (XMLField) mapping.getField();
            XPathFragment frag = field.getXPathFragment();
            String propName = getNameForFragment(frag);
            // for paths, there may already be an existing property
            prop = properties.get(propName);
            if (prop == null) {
                prop = new Property();
                prop.setName(propName);
            }
            Property nestedProperty = getNestedPropertyForFragment(frag, prop);
            nestedProperty.setType(JsonType.ARRAY);
            nestedProperty.setItem(new Property());
            XMLDescriptor referenceDescriptor = (XMLDescriptor) mapping.getReferenceDescriptor();
            if (referenceDescriptor != null && referenceDescriptor.hasInheritance()) {
                // handle inheritence
                // schema.setAnyOf(new Property[descriptor.getInheritancePolicy().getAllChildDescriptors().size()]);
                List<ClassDescriptor> descriptors = getAllDescriptorsForInheritance(referenceDescriptor);
                Property[] props = new Property[descriptors.size()];
                for (int i = 0; i < props.length; i++) {
                    XMLDescriptor nextDescriptor = null;
                    nextDescriptor = (XMLDescriptor) descriptors.get(i);
                    Property ref = new Property();
                    ref.setRef(getReferenceForDescriptor(nextDescriptor, true));
                    props[i] = ref;
                }
                nestedProperty.getItem().setAnyOf(props);
            } else {
                nestedProperty.getItem().setRef(getReferenceForDescriptor(referenceDescriptor, false));
            // populateProperties(nestedProperty.getItem().getProperties(), (XMLDescriptor)mapping.getReferenceDescriptor());
            }
        } else if (next.isAbstractCompositeDirectCollectionMapping()) {
            DirectCollectionMapping mapping = (DirectCollectionMapping) next;
            XMLField field = (XMLField) mapping.getField();
            XPathFragment frag = field.getXPathFragment();
            List<String> enumeration = null;
            if (mapping.getValueConverter() instanceof JAXBEnumTypeConverter) {
                enumeration = getEnumeration((DatabaseMapping) next);
            }
            String propertyName = getNameForFragment(frag);
            if (frag.nameIsText()) {
                propertyName = (String) this.contextProperties.get(MarshallerProperties.JSON_VALUE_WRAPPER);
            }
            if (frag.isAttribute() && this.attributePrefix != null) {
                propertyName = attributePrefix + propertyName;
            }
            prop = properties.get(propertyName);
            if (prop == null) {
                prop = new Property();
                prop.setName(propertyName);
            }
            Property nestedProperty = getNestedPropertyForFragment(frag, prop);
            nestedProperty.setType(JsonType.ARRAY);
            nestedProperty.setItem(new Property());
            if (enumeration != null) {
                nestedProperty.getItem().setEnumeration(enumeration);
            }
            Class<?> type = mapping.getAttributeElementClass();
            if (type == null) {
                type = CoreClassConstants.STRING;
            }
            nestedProperty.getItem().setType(getJsonTypeForJavaType(type));
            return prop;
        } else if (next instanceof BinaryDataCollectionMapping) {
            BinaryDataCollectionMapping mapping = (BinaryDataCollectionMapping) next;
            XMLField field = (XMLField) mapping.getField();
            XPathFragment frag = field.getXPathFragment();
            String propertyName = getNameForFragment(frag);
            if (frag.isSelfFragment()) {
                propertyName = Constants.VALUE_WRAPPER;
                if (this.contextProperties != null) {
                    String valueWrapper = (String) this.contextProperties.get(JAXBContextProperties.JSON_VALUE_WRAPPER);
                    if (valueWrapper != null) {
                        propertyName = valueWrapper;
                    }
                }
            }
            if (frag.isAttribute() && this.attributePrefix != null) {
                propertyName = attributePrefix + propertyName;
            }
            prop = properties.get(propertyName);
            if (prop == null) {
                prop = new Property();
                prop.setName(propertyName);
            }
            Property nestedProperty = getNestedPropertyForFragment(frag, prop);
            nestedProperty.setType(JsonType.ARRAY);
            nestedProperty.setItem(new Property());
            if (mapping.shouldInlineBinaryData()) {
                nestedProperty.getItem().setType(JsonType.STRING);
            } else {
                nestedProperty.getItem().setAnyOf(getXopIncludeProperties());
            }
            return prop;
        }
    } else {
        if (next.isAbstractDirectMapping()) {
            // handle direct mapping
            DirectMapping directMapping = (DirectMapping) next;
            XMLField field = (XMLField) directMapping.getField();
            XPathFragment frag = field.getXPathFragment();
            List<String> enumeration = null;
            if (directMapping.getConverter() instanceof JAXBEnumTypeConverter) {
                enumeration = getEnumeration((DatabaseMapping) directMapping);
            }
            String propertyName = getNameForFragment(frag);
            if (frag.nameIsText()) {
                propertyName = Constants.VALUE_WRAPPER;
                if (this.contextProperties != null) {
                    String valueWrapper = (String) this.contextProperties.get(JAXBContextProperties.JSON_VALUE_WRAPPER);
                    if (valueWrapper != null) {
                        propertyName = valueWrapper;
                    }
                }
            }
            if (frag.isAttribute() && this.attributePrefix != null) {
                propertyName = attributePrefix + propertyName;
            }
            prop = properties.get(propertyName);
            if (prop == null) {
                prop = new Property();
                prop.setName(propertyName);
            }
            Property nestedProperty = getNestedPropertyForFragment(frag, prop);
            if (enumeration != null) {
                nestedProperty.setEnumeration(enumeration);
            }
            if (directMapping instanceof BinaryDataMapping) {
                BinaryDataMapping binaryMapping = (BinaryDataMapping) directMapping;
                if (binaryMapping.shouldInlineBinaryData() || binaryMapping.isSwaRef()) {
                    nestedProperty.setType(JsonType.STRING);
                } else {
                    if (this.xopIncludeProp == null) {
                        initXopIncludeProp();
                    }
                    nestedProperty.setAnyOf(this.xopIncludeProp);
                }
            } else {
                nestedProperty.setType(getJsonTypeForJavaType(directMapping.getAttributeClassification()));
            }
            return prop;
        } else if (next instanceof ObjectReferenceMapping) {
            ObjectReferenceMapping mapping = (ObjectReferenceMapping) next;
            Set<XMLField> sourceFields = mapping.getSourceToTargetKeyFieldAssociations().keySet();
            XMLDescriptor reference = (XMLDescriptor) mapping.getReferenceDescriptor();
            for (XMLField nextField : sourceFields) {
                XPathFragment frag = nextField.getXPathFragment();
                String propName = getNameForFragment(frag);
                XMLField targetField = (XMLField) mapping.getSourceToTargetKeyFieldAssociations().get(nextField);
                Class<?> type = CoreClassConstants.STRING;
                if (reference != null) {
                    type = getTypeForTargetField(targetField, reference);
                }
                prop = properties.get(propName);
                if (prop == null) {
                    prop = new Property();
                    prop.setName(propName);
                }
                Property nestedProperty = getNestedPropertyForFragment(frag, prop);
                // nestedProperty.setType(JsonType.ARRAY);
                // nestedProperty.setItem(new Property());
                nestedProperty.setType(getJsonTypeForJavaType(type));
                if (!properties.containsKey(prop.getName())) {
                    properties.put(prop.getName(), prop);
                }
            }
            return prop;
        } else if (next.isAbstractCompositeObjectMapping()) {
            CompositeObjectMapping mapping = (CompositeObjectMapping) next;
            XMLDescriptor nextDescriptor = (XMLDescriptor) mapping.getReferenceDescriptor();
            XMLField field = (XMLField) mapping.getField();
            XPathFragment firstFragment = field.getXPathFragment();
            if (firstFragment.isSelfFragment() || firstFragment.nameIsText()) {
                if (nextDescriptor != null) {
                    populateProperties(properties, nextDescriptor);
                }
            } else {
                String propName = getNameForFragment(firstFragment);
                prop = properties.get(propName);
                if (prop == null) {
                    prop = new Property();
                    prop.setName(propName);
                }
                // prop.setType(JsonType.OBJECT);
                prop.setName(propName);
                Property nestedProperty = getNestedPropertyForFragment(firstFragment, prop);
                XMLDescriptor referenceDescriptor = (XMLDescriptor) mapping.getReferenceDescriptor();
                if (referenceDescriptor != null && referenceDescriptor.hasInheritance()) {
                    // handle inheritence
                    // schema.setAnyOf(new Property[descriptor.getInheritancePolicy().getAllChildDescriptors().size()]);
                    List<ClassDescriptor> descriptors = getAllDescriptorsForInheritance(referenceDescriptor);
                    Property[] props = new Property[descriptors.size()];
                    for (int i = 0; i < props.length; i++) {
                        XMLDescriptor nextDesc = (XMLDescriptor) descriptors.get(i);
                        Property ref = new Property();
                        ref.setRef(getReferenceForDescriptor(nextDesc, true));
                        props[i] = ref;
                    }
                    nestedProperty.setAnyOf(props);
                } else {
                    nestedProperty.setRef(getReferenceForDescriptor(referenceDescriptor, false));
                // populateProperties(nestedProperty.getItem().getProperties(), (XMLDescriptor)mapping.getReferenceDescriptor());
                }
            // populateProperties(nestedProperty.getProperties(), nextDescriptor);
            }
        } else if (next instanceof BinaryDataMapping) {
            BinaryDataMapping binaryMapping = (BinaryDataMapping) next;
            XMLField field = (XMLField) binaryMapping.getField();
            XPathFragment frag = field.getXPathFragment();
            String propertyName = getNameForFragment(frag);
            if (frag.isSelfFragment()) {
                propertyName = Constants.VALUE_WRAPPER;
                if (this.contextProperties != null) {
                    String valueWrapper = (String) this.contextProperties.get(MarshallerProperties.JSON_VALUE_WRAPPER);
                    if (valueWrapper != null) {
                        propertyName = valueWrapper;
                    }
                }
            }
            if (frag.isAttribute() && this.attributePrefix != null) {
                propertyName = attributePrefix + propertyName;
            }
            prop = properties.get(propertyName);
            if (prop == null) {
                prop = new Property();
                prop.setName(propertyName);
            }
            Property nestedProperty = getNestedPropertyForFragment(frag, prop);
            if (binaryMapping.shouldInlineBinaryData() || binaryMapping.isSwaRef()) {
                nestedProperty.setType(JsonType.STRING);
            } else {
                if (this.xopIncludeProp == null) {
                    initXopIncludeProp();
                }
                nestedProperty.setAnyOf(this.xopIncludeProp);
            }
            return prop;
        }
    }
    return prop;
}

Example 2 with XPathFragment

use of org.eclipse.persistence.internal.oxm.XPathFragment in project eclipselink by eclipse-ee4j.

the class Property method isPositional.

/**
 * Indicates if this property is mapped by position, i.e. 'name="data[1]"',
 * or is mapped by attribute value (predicate mapping), i.e.
 * 'personal-info[@pi-type='last-name']/name[@name-type='surname']/text()'
 */
public boolean isPositional() {
    if (getXmlPath() == null) {
        return false;
    }
    Field<XMLConversionManager, NamespaceResolver> field = new XMLField(getXmlPath());
    XPathFragment frag = field.getXPathFragment();
    // loop until we have the last non-null, non-attribute, non-text fragment
    while (true) {
        if (frag.getNextFragment() != null && !frag.getNextFragment().isAttribute() && !frag.getNextFragment().nameIsText()) {
            frag = frag.getNextFragment();
        } else {
            break;
        }
    }
    return frag.containsIndex() || frag.getPredicate() != null;
}

Example 3 with XPathFragment

use of org.eclipse.persistence.internal.oxm.XPathFragment in project eclipselink by eclipse-ee4j.

the class SchemaGenerator method buildSchemaComponentsForXPath.

/**
 * This method will build element/complexType/typedefparticle components for a given xml-path,
 * and return an XmlPathResult instance containg the sequence that the target should be added
 * to, as well as the current schema - which could be different than the working schema used
 * before calling this method in the case of a prefixed path element from a different namespace.
 * Regarding the path 'target', if the xml-path was "contact-info/address/street", "street"
 * would be the target.  In this case the sequence containing the "address" element would be
 * set in the XmlPathResult to be returned.
 *
 * The exception case is an 'any', where we want to process the last path element before
 * returning - this is necessary due to the fact that an Any will be added to the sequence
 * in place of the last path element by the calling method.
 */
private AddToSchemaResult buildSchemaComponentsForXPath(XPathFragment frag, AddToSchemaResult xpr, boolean isChoice, Property next) {
    boolean isAny = next.isAny() || next.isAnyAttribute();
    TypeDefParticle currentParticle = xpr.particle;
    Schema workingSchema = xpr.schema;
    // each nested choice on a collection will be unbounded
    boolean isUnbounded = false;
    if (currentParticle != null) {
        isUnbounded = (currentParticle.getMaxOccurs() != null && currentParticle.getMaxOccurs() == Occurs.UNBOUNDED);
    }
    // don't process the last frag; that will be handled by the calling method if necessary
    // note that we may need to process the last frag if it has a namespace or is an 'any'
    boolean lastFrag = (frag.getNextFragment() == null || frag.getNextFragment().nameIsText());
    // if the element is already in the sequence we don't want the calling method to add a second one
    if (lastFrag && (elementExistsInParticle(frag.getLocalName(), frag.getShortName(), currentParticle) != null)) {
        xpr.particle = null;
        return xpr;
    }
    // if the current element exists, use it; otherwise create a new one
    Element currentElement = elementExistsInParticle(frag.getLocalName(), frag.getShortName(), currentParticle);
    boolean currentElementExists = (currentElement != null);
    if (!currentElementExists) {
        currentElement = new Element();
        // don't set the element name yet, as it may end up being a ref
        ComplexType cType = new ComplexType();
        TypeDefParticle particle = null;
        if (isChoice) {
            particle = new Choice();
            if (isUnbounded) {
                particle.setMaxOccurs(Occurs.UNBOUNDED);
            }
        } else {
            XPathFragment nextFragment = frag.getNextFragment();
            if (frag.containsIndex() || frag.getPredicate() != null || (!next.isXmlList() && null != nextFragment && nextFragment.isAttribute() && helper.isCollectionType(next.getType()))) {
                currentElement.setMaxOccurs(Occurs.UNBOUNDED);
            }
            particle = new Sequence();
        }
        cType.setTypeDefParticle(particle);
        currentElement.setComplexType(cType);
    } else {
        // if the current element already exists, we may need to change it's type
        XPathFragment nextFrag = frag.getNextFragment();
        if (nextFrag != null && nextFrag.isAttribute()) {
            if (currentElement.getType() != null && currentElement.getComplexType() == null) {
                // there's already a text mapping to this element, so
                // attributes can be added by making it complex with
                // simple content.
                SimpleType type = currentElement.getSimpleType();
                if (type != null) {
                    ComplexType cType = new ComplexType();
                    cType.setSimpleContent(new SimpleContent());
                    Extension extension = new Extension();
                    extension.setBaseType(type.getRestriction().getBaseType());
                    cType.getSimpleContent().setExtension(extension);
                    currentElement.setSimpleType(null);
                    currentElement.setComplexType(cType);
                } else {
                    String eType = currentElement.getType();
                    ComplexType cType = new ComplexType();
                    SimpleContent sContent = new SimpleContent();
                    Extension extension = new Extension();
                    extension.setBaseType(eType);
                    sContent.setExtension(extension);
                    cType.setSimpleContent(sContent);
                    currentElement.setType(null);
                    currentElement.setComplexType(cType);
                }
            }
        }
    }
    // may need to create a ref, depending on the namespace
    Element globalElement = null;
    String fragUri = frag.getNamespaceURI();
    if (fragUri != null) {
        Schema fragSchema = getSchemaForNamespace(fragUri);
        String targetNS = workingSchema.getTargetNamespace();
        // handle Attribute case
        if (frag.isAttribute()) {
            if (fragSchema == null || (fragSchema.isAttributeFormDefault() && !fragUri.equals(targetNS)) || (!fragSchema.isAttributeFormDefault() && fragUri.length() > 0)) {
                // if fragSchema is null, just generate the ref
                if (fragSchema != null) {
                    Attribute globalAttribute = null;
                    globalAttribute = fragSchema.getTopLevelAttributes().get(frag.getLocalName());
                    if (globalAttribute == null) {
                        globalAttribute = createGlobalAttribute(frag, workingSchema, fragSchema, next);
                    }
                } else {
                    // may need to add an import
                    addImportIfRequired(workingSchema, null, fragUri);
                }
                // add the attribute ref to the current element
                String attributeRefName;
                if (fragUri.equals(targetNS)) {
                    String prefix = fragSchema.getNamespaceResolver().resolveNamespaceURI(fragUri);
                    attributeRefName = prefix + COLON + frag.getLocalName();
                } else {
                    attributeRefName = frag.getShortName();
                }
                TypeDefParticleOwner type;
                if (currentParticle != null) {
                    type = currentParticle.getOwner();
                } else {
                    type = xpr.simpleContentType;
                }
                if (type instanceof ComplexType) {
                    createRefAttribute(attributeRefName, (ComplexType) type);
                }
                // set the frag's schema as it may be different than the current schema
                xpr.schema = fragSchema;
                // ref case - indicate to the calling method that there's nothing to do
                xpr.particle = null;
            }
            // since we are dealing with an attribute, we are on the last fragment; return
            return xpr;
        }
        // here we are dealing with an Element
        if ((fragSchema.isElementFormDefault() && !fragUri.equals(targetNS)) || (!fragSchema.isElementFormDefault() && fragUri.length() > 0)) {
            // must generate a global element and create a reference to it
            // if the global element exists, use it; otherwise create a new one
            globalElement = fragSchema.getTopLevelElements().get(frag.getLocalName());
            if (globalElement == null) {
                globalElement = createGlobalElement(frag, workingSchema, fragSchema, isChoice, isUnbounded, next, (lastFrag && !isAny));
            }
            // if the current element doesn't exist set a ref and add it to the sequence
            if (!currentElementExists) {
                // use prefix from the working schema's resolver - add prefix/uri pair if necessary
                String fragPrefix = workingSchema.getNamespaceResolver().resolveNamespaceURI(fragUri);
                if (fragPrefix == null) {
                    fragPrefix = workingSchema.getNamespaceResolver().generatePrefix(frag.getPrefix());
                    workingSchema.getNamespaceResolver().put(fragPrefix, fragUri);
                }
                currentElement = createRefElement(fragPrefix + COLON + frag.getLocalName(), currentParticle);
                if (frag.containsIndex() || frag.getPredicate() != null || helper.isCollectionType(next.getType())) {
                    currentElement.setMaxOccurs(Occurs.UNBOUNDED);
                }
                currentElementExists = true;
            }
            // set the frag's schema as it may be different than the current schema
            xpr.schema = fragSchema;
            // at this point, if we are dealing with the last fragment we will need to return
            if (lastFrag) {
                // add a second one...unless we're dealing with an 'any'
                if (isAny) {
                    // set the particle that the 'any' will be added to by the calling method
                    xpr.particle = globalElement.getComplexType().getTypeDefParticle();
                    return xpr;
                }
                // ref case - indicate to the calling method that there's nothing to do
                xpr.particle = null;
                return xpr;
            }
            // make the global element current
            currentElement = globalElement;
        }
    }
    if (!lastFrag || (lastFrag && isAny)) {
        // if we didn't process a global element, and the current element isn't already in the sequence, add it
        if (!currentElementExists && globalElement == null) {
            currentElement.setName(frag.getLocalName());
            Integer minOccurs = next.getMinOccurs();
            if (minOccurs != null)
                currentElement.setMinOccurs(String.valueOf(minOccurs));
            else
                currentElement.setMinOccurs(Occurs.ZERO);
            currentParticle.addElement(currentElement);
        }
        // set the correct particle to use/return
        if (currentElement.getComplexType() != null) {
            if (currentElement.getComplexType().getTypeDefParticle() == null) {
                // complexType with simple-content
                xpr.simpleContentType = currentElement.getComplexType();
                xpr.particle = null;
            } else {
                xpr.particle = currentElement.getComplexType().getTypeDefParticle();
            }
        } else {
            // If there's no complex type, we're building the path through an element with
            // a simple type. In order to build the path through this
            // element, switch to a complex type with simple content.
            SimpleType type = currentElement.getSimpleType();
            if (type != null) {
                ComplexType cType = new ComplexType();
                cType.setSimpleContent(new SimpleContent());
                Extension extension = new Extension();
                extension.setBaseType(type.getRestriction().getBaseType());
                cType.getSimpleContent().setExtension(extension);
                currentElement.setSimpleType(null);
                currentElement.setComplexType(cType);
                xpr.particle = null;
                xpr.simpleContentType = cType;
            } else {
                String eType = currentElement.getType();
                ComplexType cType = new ComplexType();
                SimpleContent sContent = new SimpleContent();
                Extension extension = new Extension();
                extension.setBaseType(eType);
                sContent.setExtension(extension);
                cType.setSimpleContent(sContent);
                currentElement.setType(null);
                currentElement.setComplexType(cType);
                xpr.particle = null;
                xpr.simpleContentType = cType;
            }
        }
    }
    // if we're on the last fragment, we're done
    if (lastFrag) {
        return xpr;
    }
    // call back into this method to process the next path element
    return buildSchemaComponentsForXPath(frag.getNextFragment(), xpr, isChoice, next);
}

Example 4 with XPathFragment

use of org.eclipse.persistence.internal.oxm.XPathFragment in project eclipselink by eclipse-ee4j.

the class SDOSequence method convertToSetting.

private Setting convertToSetting(DatabaseMapping mapping, Object value) {
    XMLDescriptor xmlDescriptor = (XMLDescriptor) mapping.getDescriptor();
    NamespaceResolver nsResolver = xmlDescriptor.getNamespaceResolver();
    Setting rootSetting = new Setting();
    XMLField xmlField = (XMLField) mapping.getField();
    if (xmlField == null) {
        if (mapping instanceof XMLObjectReferenceMapping) {
            xmlField = (XMLField) ((XMLObjectReferenceMapping) mapping).getFields().get(0);
        } else if (mapping instanceof XMLCollectionReferenceMapping) {
            xmlField = (XMLField) ((XMLCollectionReferenceMapping) mapping).getFields().get(0);
        }
    }
    Setting setting = rootSetting;
    if (xmlField != null) {
        XPathFragment xPathFragment = xmlField.getXPathFragment();
        rootSetting = convertToSetting(xPathFragment, nsResolver);
        setting = rootSetting;
        while (xPathFragment.getNextFragment() != null) {
            xPathFragment = xPathFragment.getNextFragment();
            Setting childSetting = convertToSetting(xPathFragment, nsResolver);
            setting.addChild(childSetting);
            setting = childSetting;
        }
    }
    setting.setObject(dataObject);
    setting.setMapping(mapping);
    setting.setValue(value, false);
    return rootSetting;
}

Example 5 with XPathFragment

use of org.eclipse.persistence.internal.oxm.XPathFragment in project eclipselink by eclipse-ee4j.

the class JAXBHelperContext method getObjectDescriptor.

/**
 * Get the XML descriptor for the entity class corresponding to the SDO type.
 */
XMLDescriptor getObjectDescriptor(SDOType sdoType) {
    QName xsdQName = sdoType.getXsdType();
    if (null == xsdQName) {
        xsdQName = sdoType.getQName();
    }
    XPathFragment xPathFragment = new XPathFragment(xsdQName.getLocalPart());
    xPathFragment.setNamespaceURI(xsdQName.getNamespaceURI());
    XMLDescriptor xmlDescriptor = jaxbContext.getXMLContext().getDescriptorByGlobalType(xPathFragment);
    if (null == xmlDescriptor) {
        xmlDescriptor = jaxbContext.getXMLContext().getDescriptor(xsdQName);
        if (null == xmlDescriptor) {
            throw SDOException.sdoJaxbNoDescriptorForType(sdoType.getQName(), xsdQName);
        }
    }
    return xmlDescriptor;
}