private UpdateResponse performDeepInsert(
String rawURI,
UriInfo uriInfo,
EdmEntityType entityType,
Entity entity,
List<ExpandNode> expandNodes)
throws SQLException, TeiidException {
UpdateResponse response = performInsert(rawURI, uriInfo, entityType, entity);
for (String navigationName : entityType.getNavigationPropertyNames()) {
EdmNavigationProperty navProperty = entityType.getNavigationProperty(navigationName);
Link navLink = entity.getNavigationLink(navigationName);
if (navLink != null && navLink.getInlineEntity() != null) {
ExpandNode node = new ExpandNode();
node.navigationProperty = navProperty;
expandNodes.add(node);
performDeepInsert(
rawURI, uriInfo, navProperty.getType(), navLink.getInlineEntity(), node.children);
} else if (navLink != null
&& navLink.getInlineEntitySet() != null
&& !navLink.getInlineEntitySet().getEntities().isEmpty()) {
ExpandNode node = new ExpandNode();
node.navigationProperty = navProperty;
expandNodes.add(node);
for (Entity inlineEntity : navLink.getInlineEntitySet().getEntities()) {
performDeepInsert(rawURI, uriInfo, navProperty.getType(), inlineEntity, node.children);
}
}
}
return response;
}
/**
* Example: For the following navigation: DemoService.svc/Categories(1)/Products we need the
* EdmEntitySet for the navigation property "Products"
*
* <p>This is defined as follows in the metadata: <code>
*
* <EntitySet Name="Categories" EntityType="OData.Demo.Category">
* <NavigationPropertyBinding Path="Products" Target="Products"/>
* </EntitySet>
* </code> The "Target" attribute specifies the target EntitySet Therefore we need the
* startEntitySet "Categories" in order to retrieve the target EntitySet "Products"
*/
public static EdmEntitySet getNavigationTargetEntitySet(
EdmEntitySet startEntitySet, EdmNavigationProperty edmNavigationProperty)
throws ODataApplicationException {
EdmEntitySet navigationTargetEntitySet = null;
String navPropName = edmNavigationProperty.getName();
EdmBindingTarget edmBindingTarget = startEntitySet.getRelatedBindingTarget(navPropName);
if (edmBindingTarget == null) {
throw new ODataApplicationException(
"Not supported.", HttpStatusCode.NOT_IMPLEMENTED.getStatusCode(), Locale.ROOT);
}
if (edmBindingTarget instanceof EdmEntitySet) {
navigationTargetEntitySet = (EdmEntitySet) edmBindingTarget;
} else {
throw new ODataApplicationException(
"Not supported.", HttpStatusCode.NOT_IMPLEMENTED.getStatusCode(), Locale.ROOT);
}
return navigationTargetEntitySet;
}
private void appendNavigationProperties(
final XMLStreamWriter writer, final EdmStructuredType type) throws XMLStreamException {
List<String> navigationPropertyNames = new ArrayList<String>(type.getNavigationPropertyNames());
if (type.getBaseType() != null) {
navigationPropertyNames.removeAll(type.getBaseType().getNavigationPropertyNames());
}
for (String navigationPropertyName : navigationPropertyNames) {
EdmNavigationProperty navigationProperty = type.getNavigationProperty(navigationPropertyName);
writer.writeStartElement(XML_NAVIGATION_PROPERTY);
writer.writeAttribute(XML_NAME, navigationPropertyName);
writer.writeAttribute(
XML_TYPE,
getAliasedFullQualifiedName(
navigationProperty.getType(), navigationProperty.isCollection()));
if (!navigationProperty.isNullable()) {
writer.writeAttribute(XML_NULLABLE, "" + navigationProperty.isNullable());
}
if (navigationProperty.getPartner() != null) {
EdmNavigationProperty partner = navigationProperty.getPartner();
writer.writeAttribute(XML_PARTNER, partner.getName());
}
if (navigationProperty.containsTarget()) {
writer.writeAttribute(XML_CONTAINS_TARGET, "" + navigationProperty.containsTarget());
}
if (navigationProperty.getReferentialConstraints() != null) {
for (EdmReferentialConstraint constraint : navigationProperty.getReferentialConstraints()) {
writer.writeEmptyElement("ReferentialConstraint");
writer.writeAttribute(XML_PROPERTY, constraint.getPropertyName());
writer.writeAttribute("ReferencedProperty", constraint.getReferencedPropertyName());
}
}
writer.writeEndElement();
}
}