private void appendKey(final XMLStreamWriter writer, final EdmEntityType entityType)
throws XMLStreamException {
List<EdmKeyPropertyRef> keyPropertyRefs = entityType.getKeyPropertyRefs();
if (keyPropertyRefs != null && !keyPropertyRefs.isEmpty()) {
// Resolve Base Type key as it is shown in derived type
EdmEntityType baseType = entityType.getBaseType();
if (baseType != null
&& baseType.getKeyPropertyRefs() != null
&& !(baseType.getKeyPropertyRefs().isEmpty())) {
return;
}
writer.writeStartElement(XML_KEY);
for (EdmKeyPropertyRef keyRef : keyPropertyRefs) {
writer.writeEmptyElement(XML_PROPERTY_REF);
writer.writeAttribute(XML_NAME, keyRef.getName());
if (keyRef.getAlias() != null) {
writer.writeAttribute(XML_ALIAS, keyRef.getAlias());
}
}
writer.writeEndElement();
}
}
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;
}
private void appendEntityTypes(
final XMLStreamWriter writer, final List<EdmEntityType> entityTypes)
throws XMLStreamException {
for (EdmEntityType entityType : entityTypes) {
writer.writeStartElement(XML_ENTITY_TYPE);
writer.writeAttribute(XML_NAME, entityType.getName());
if (entityType.hasStream()) {
writer.writeAttribute(XML_HAS_STREAM, "" + entityType.hasStream());
}
if (entityType.getBaseType() != null) {
writer.writeAttribute(
XML_BASE_TYPE, getAliasedFullQualifiedName(entityType.getBaseType(), false));
}
if (entityType.isAbstract()) {
writer.writeAttribute(ABSTRACT, TRUE);
}
appendKey(writer, entityType);
appendProperties(writer, entityType);
appendNavigationProperties(writer, entityType);
writer.writeEndElement();
}
}
public static boolean entityMatchesAllKeys(
EdmEntityType edmEntityType, Entity rt_entity, List<UriParameter> keyParams) {
// loop over all keys
for (final UriParameter key : keyParams) {
// key
String keyName = key.getName();
String keyText = key.getText();
// note: below line doesn't consider: keyProp can be part of a complexType in V4
// in such case, it would be required to access it via getKeyPropertyRef()
// but since this isn't the case in our model, we ignore it in our implementation
EdmProperty edmKeyProperty = (EdmProperty) edmEntityType.getProperty(keyName);
// Edm: we need this info for the comparison below
Boolean isNullable = edmKeyProperty.isNullable();
Integer maxLength = edmKeyProperty.getMaxLength();
Integer precision = edmKeyProperty.getPrecision();
Boolean isUnicode = edmKeyProperty.isUnicode();
Integer scale = edmKeyProperty.getScale();
// get the EdmType in order to compare
EdmType edmType = edmKeyProperty.getType();
// if(EdmType instanceof EdmPrimitiveType) // do we need this?
EdmPrimitiveType edmPrimitiveType = (EdmPrimitiveType) edmType;
// Runtime data: the value of the current entity
// don't need to check for null, this is done in FWK
Object valueObject = rt_entity.getProperty(keyName).getValue();
// TODO if the property is a complex type
// now need to compare the valueObject with the keyText String
// this is done using the type.valueToString
String valueAsString = null;
try {
valueAsString =
edmPrimitiveType.valueToString(
valueObject, isNullable, maxLength, precision, scale, isUnicode);
} catch (EdmPrimitiveTypeException e) {
return false; // TODO proper Exception handling
}
if (valueAsString == null) {
return false;
}
boolean matches = valueAsString.equals(keyText);
// if any of the key properties is not found in the entity, we don't need to search further
if (!matches) {
return false;
}
// if the given key value is found in the current entity, continue with the next key
}
return true;
}
@Override
public void createEntity(DataRequest request, Entity entity, EntityResponse response)
throws ODataLibraryException, ODataApplicationException {
EdmEntityType entityType = request.getEntitySet().getEntityType();
String txn;
try {
txn = getClient().startTransaction();
} catch (SQLException e) {
throw new ODataApplicationException(
e.getMessage(),
HttpStatusCode.INTERNAL_SERVER_ERROR.getStatusCode(),
Locale.getDefault(),
e);
}
boolean success = false;
try {
List<ExpandNode> expands = new ArrayList<TeiidServiceHandler.ExpandNode>();
UpdateResponse updateResponse =
performDeepInsert(
request.getODataRequest().getRawBaseUri(),
request.getUriInfo(),
entityType,
entity,
expands);
if (updateResponse != null && updateResponse.getUpdateCount() == 1) {
ODataSQLBuilder visitor =
new ODataSQLBuilder(
this.odata,
getClient().getMetadataStore(),
true,
false,
request.getODataRequest().getRawBaseUri(),
this.serviceMetadata,
this.nameGenerator);
Query query =
visitor.selectWithEntityKey(
entityType, entity, updateResponse.getGeneratedKeys(), expands);
LogManager.logDetail(
LogConstants.CTX_ODATA,
null,
"created entity = ",
entityType.getName(),
" with key=",
query.getCriteria().toString()); // $NON-NLS-1$ //$NON-NLS-2$
EntityCollectionResponse result =
new EntityCollectionResponse(
request.getODataRequest().getRawBaseUri(), visitor.getContext());
getClient().executeSQL(query, visitor.getParameters(), false, null, null, null, 1, result);
if (!result.getEntities().isEmpty()) {
entity = result.getEntities().get(0);
String location =
EntityResponse.buildLocation(
request.getODataRequest().getRawBaseUri(),
entity,
request.getEntitySet().getName(),
entityType);
entity.setId(new URI(location));
}
response.writeCreatedEntity(request.getEntitySet(), entity);
} else {
response.writeNotModified();
}
getClient().commit(txn);
success = true;
} catch (SQLException e) {
throw new ODataApplicationException(
e.getMessage(),
HttpStatusCode.INTERNAL_SERVER_ERROR.getStatusCode(),
Locale.getDefault(),
e);
} catch (URISyntaxException e) {
throw new ODataApplicationException(
e.getMessage(),
HttpStatusCode.INTERNAL_SERVER_ERROR.getStatusCode(),
Locale.getDefault(),
e);
} catch (TeiidException e) {
throw new ODataApplicationException(
e.getMessage(),
HttpStatusCode.INTERNAL_SERVER_ERROR.getStatusCode(),
Locale.getDefault(),
e);
} catch (EdmPrimitiveTypeException e) {
throw new ODataApplicationException(
e.getMessage(),
HttpStatusCode.INTERNAL_SERVER_ERROR.getStatusCode(),
Locale.getDefault(),
e);
} finally {
if (!success) {
try {
getClient().rollback(txn);
} catch (SQLException e1) {
// ignore
}
}
}
}
