public EdmDataServices parseMetadata(XMLEventReader2 reader) {
List<EdmSchema.Builder> schemas = new ArrayList<EdmSchema.Builder>();
List<PrefixedNamespace> namespaces = null;
ODataVersion version = null;
boolean foundDataServices = false;
while (reader.hasNext()) {
XMLEvent2 event = reader.nextEvent();
boolean shouldReturn = false;
if (event.isStartElement()) {
if (isElement(event, XmlFormatParser.EDMX_EDMX)) {
namespaces = getExtensionNamespaces(event.asStartElement());
} else if (isElement(event, EDMX_DATASERVICES)) {
foundDataServices = true;
String str =
getAttributeValueIfExists(
event.asStartElement(), new QName2(NS_METADATA, "DataServiceVersion"));
version = str != null ? ODataVersion.parse(str) : null;
} else if (isElement(
event,
EDM2006_SCHEMA,
EDM2007_SCHEMA,
EDM2008_1_SCHEMA,
EDM2008_9_SCHEMA,
EDM2009_8_SCHEMA,
EDM2009_11_SCHEMA)) {
schemas.add(parseEdmSchema(reader, event.asStartElement()));
if (!foundDataServices) // some dallas services have Schema as the document element!
shouldReturn = true;
}
}
if (isEndElement(event, EDMX_DATASERVICES)) shouldReturn = true;
if (shouldReturn) {
dataServices.setVersion(version).addSchemas(schemas).addNamespaces(namespaces);
resolve();
return dataServices.build();
}
}
throw new UnsupportedOperationException();
}
private void resolve() {
final Map<String, EdmEntityType.Builder> allEetsByFQName =
Enumerable.create(dataServices.getEntityTypes())
.toMap(EdmEntityType.Builder.func1_getFullyQualifiedTypeName());
final Map<String, EdmEntityType.Builder> allEetsByFQAliasName =
Enumerable.create(dataServices.getEntityTypes())
.where(EdmEntityType.Builder.pred1_hasAlias())
.toMap(EdmEntityType.Builder.func1_getFQAliasName());
final Map<String, EdmAssociation.Builder> allEasByFQName =
Enumerable.create(dataServices.getAssociations())
.toMap(EdmAssociation.Builder.func1_getFQNamespaceName());
for (EdmSchema.Builder edmSchema : dataServices.getSchemas()) {
// resolve associations
for (int i = 0; i < edmSchema.getAssociations().size(); i++) {
EdmAssociation.Builder tmpAssociation = edmSchema.getAssociations().get(i);
tmpAssociation
.getEnd1()
.setType(allEetsByFQName.get(tmpAssociation.getEnd1().getTypeName()));
tmpAssociation
.getEnd2()
.setType(allEetsByFQName.get(tmpAssociation.getEnd2().getTypeName()));
}
// resolve navproperties
for (EdmEntityType.Builder eet : edmSchema.getEntityTypes()) {
List<EdmNavigationProperty.Builder> navProps = eet.getNavigationProperties();
for (int i = 0; i < navProps.size(); i++) {
final EdmNavigationProperty.Builder tmp = navProps.get(i);
final EdmAssociation.Builder ea = allEasByFQName.get(tmp.getRelationshipName());
if (ea == null)
throw new IllegalArgumentException(
"Invalid relationship name " + tmp.getRelationshipName());
List<EdmAssociationEnd.Builder> finalEnds =
Enumerable.create(tmp.getFromRoleName(), tmp.getToRoleName())
.select(
new Func1<String, EdmAssociationEnd.Builder>() {
public EdmAssociationEnd.Builder apply(String input) {
if (ea.getEnd1().getRole().equals(input)) return ea.getEnd1();
if (ea.getEnd2().getRole().equals(input)) return ea.getEnd2();
throw new IllegalArgumentException("Invalid role name " + input);
}
})
.toList();
tmp.setRelationship(ea).setFromTo(finalEnds.get(0), finalEnds.get(1));
}
}
// resolve entitysets
for (EdmEntityContainer.Builder edmEntityContainer : edmSchema.getEntityContainers()) {
for (int i = 0; i < edmEntityContainer.getEntitySets().size(); i++) {
final EdmEntitySet.Builder tmpEes = edmEntityContainer.getEntitySets().get(i);
EdmEntityType.Builder eet = allEetsByFQName.get(tmpEes.getEntityTypeName());
if (eet == null) eet = allEetsByFQAliasName.get(tmpEes.getEntityTypeName());
if (eet == null)
throw new IllegalArgumentException("Invalid entity type " + tmpEes.getEntityTypeName());
edmEntityContainer
.getEntitySets()
.set(
i,
EdmEntitySet.newBuilder()
.setName(tmpEes.getName())
.setEntityType(eet)
.setAnnotationElements(tmpEes.getAnnotationElements())
.setAnnotations(tmpEes.getAnnotations()));
}
}
// resolve associationsets
for (final EdmEntityContainer.Builder edmEntityContainer : edmSchema.getEntityContainers()) {
for (int i = 0; i < edmEntityContainer.getAssociationSets().size(); i++) {
final EdmAssociationSet.Builder tmpEas = edmEntityContainer.getAssociationSets().get(i);
final EdmAssociation.Builder ea = allEasByFQName.get(tmpEas.getAssociationName());
List<EdmAssociationSetEnd.Builder> finalEnds =
Enumerable.create(tmpEas.getEnd1(), tmpEas.getEnd2())
.select(
new Func1<EdmAssociationSetEnd.Builder, EdmAssociationSetEnd.Builder>() {
public EdmAssociationSetEnd.Builder apply(
final EdmAssociationSetEnd.Builder input) {
EdmAssociationEnd.Builder eae =
ea.getEnd1().getRole().equals(input.getRoleName())
? ea.getEnd1()
: ea.getEnd2().getRole().equals(input.getRoleName())
? ea.getEnd2()
: null;
if (eae == null)
throw new IllegalArgumentException(
"Invalid role name " + input.getRoleName());
EdmEntitySet.Builder ees =
Enumerable.create(edmEntityContainer.getEntitySets())
.first(
OPredicates.nameEquals(
EdmEntitySet.Builder.class, input.getEntitySetName()));
return EdmAssociationSetEnd.newBuilder()
.setRole(eae)
.setEntitySet(ees)
.setAnnotationElements(input.getAnnotationElements())
.setAnnotations(input.getAnnotations());
}
})
.toList();
tmpEas.setAssociation(ea).setEnds(finalEnds.get(0), finalEnds.get(1));
}
}
// resolve functionimports
for (final EdmEntityContainer.Builder edmEntityContainer : edmSchema.getEntityContainers()) {
for (int i = 0; i < edmEntityContainer.getFunctionImports().size(); i++) {
final EdmFunctionImport.Builder tmpEfi = edmEntityContainer.getFunctionImports().get(i);
EdmEntitySet.Builder ees =
Enumerable.create(edmEntityContainer.getEntitySets())
.firstOrNull(
new Predicate1<EdmEntitySet.Builder>() {
public boolean apply(EdmEntitySet.Builder input) {
return input.getName().equals(tmpEfi.getEntitySetName());
}
});
EdmType.Builder<?, ?> typeBuilder = null;
if (tmpEfi.getReturnTypeName() != null) {
typeBuilder = dataServices.resolveType(tmpEfi.getReturnTypeName());
if (typeBuilder == null)
throw new RuntimeException("Edm-type not found: " + tmpEfi.getReturnTypeName());
if (tmpEfi.isCollection()) {
typeBuilder =
EdmCollectionType.newBuilder()
.setKind(CollectionKind.Collection)
.setCollectionType(typeBuilder);
}
}
edmEntityContainer
.getFunctionImports()
.set(
i,
EdmFunctionImport.newBuilder()
.setName(tmpEfi.getName())
.setEntitySet(ees)
.setReturnType(typeBuilder)
.setHttpMethod(tmpEfi.getHttpMethod())
.addParameters(tmpEfi.getParameters())
.setAnnotationElements(tmpEfi.getAnnotationElements())
.setAnnotations(tmpEfi.getAnnotations()));
}
}
// resolve type hierarchy
for (Entry<String, EdmEntityType.Builder> entry : allEetsByFQName.entrySet()) {
String baseTypeName = entry.getValue().getFQBaseTypeName();
if (baseTypeName != null) {
EdmEntityType.Builder baseType = allEetsByFQName.get(baseTypeName);
if (baseType == null) {
throw new IllegalArgumentException("Invalid baseType: " + baseTypeName);
}
entry.getValue().setBaseType(baseType);
}
}
}
}