/// <summary>
/// Map entity-set URL to entity-set name.
/// </summary>
/// <param name="entitySetURL">An entity-set URL.</param>
/// <returns>Returns the related entity-set name.</returns>
public static string MapEntitySetURLToEntitySetName(this string entitySetURL)
{
if (string.IsNullOrEmpty(entitySetURL))
{
throw new ArgumentNullException(string.Format(ParamNullErrorMsgPattern, "entitySetURL"));
}
if (!IsSpecifiedEntitySetURLExist(entitySetURL))
{
throw new ArgumentException(string.Format(ParamNotFoundErrorMsgPattern, "entity-set", "URL", "entitySetURL"));
}
JObject serviceRoot = JObject.Parse(ServiceStatus.GetInstance().ServiceDocument);
var entries = JsonParserHelper.GetEntries(serviceRoot);
if (null != entries)
{
foreach (var entry in entries)
{
if (null != entry["url"] && entitySetURL == entry["url"].Value <string>() &&
null != entry["kind"] && "EntitySet" == entry["kind"].Value <string>())
{
return(null != entry["name"] ? entry["name"].Value <string>() : string.Empty);
}
}
}
return(string.Empty);
}
/// <summary>
/// Verify whether an entity-set URL is existent in the service.
/// </summary>
/// <param name="entitySetURL">An entity-set URL.</param>
/// <returns>Returns true if exist, otherwise false.</returns>
public static bool IsSpecifiedEntitySetURLExist(this string entitySetURL)
{
if (string.IsNullOrEmpty(entitySetURL))
{
return(false);
}
JObject serviceRoot = JObject.Parse(ServiceStatus.GetInstance().ServiceDocument);
var entries = JsonParserHelper.GetEntries(serviceRoot);
if (null == entries || !entries.Any())
{
return(false);
}
var entry = entries
.Where(e => "EntitySet" == e["kind"].Value <string>() && entitySetURL == e["url"].Value <string>())
.Select(e => e);
try
{
return(null != entry && entry.Any());
}
catch
{
return(false);
}
}
/// <summary>
/// Whether specified Annoatation exist.
/// </summary>
/// <param name="context">Service context</param>
/// <param name="specifiedAnnoatation">The specified Annoatation</param>
/// <returns>true if exist; false otherwise</returns>
public static bool IsSpecifiedAnnotationExist(ServiceContext context, string specifiedAnnoatation)
{
JObject allobject;
context.ResponsePayload.TryToJObject(out allobject);
bool isExist = false;
// If PayloadType is Feed, verify as below.
if (context.PayloadType.Equals(RuleEngine.PayloadType.Feed))
{
var entries = JsonParserHelper.GetEntries(allobject);
foreach (JObject entry in entries)
{
var jProps = entry.Children();
foreach (JProperty jProp in jProps)
{
// Whether specified Annoatation exist in response.
if (jProp.Name.Equals(specifiedAnnoatation))
{
isExist = true;
break;
}
else
{
isExist = false;
}
}
if (isExist)
{
break;
}
}
}
else
{
var jProps = allobject.Children();
foreach (JProperty jProp in jProps)
{
// Whether specified Annoatation exist in response.
if (jProp.Name.Equals(specifiedAnnoatation))
{
isExist = true;
break;
}
else
{
isExist = false;
}
}
}
return(isExist);
}
/// <summary>
/// Get the template of an specified entity.
/// </summary>
/// <param name="entitySetName">The entity-type short name.</param>
/// <param name="actualEntityTypeShortName">The actual entity-type short name.</param>
/// <returns>Returns the entity template.</returns>
private JObject GetEntityDataTemplate(string entitySetName, string actualEntityTypeShortName = null)
{
if (string.IsNullOrEmpty(entitySetName) && !entitySetName.IsSpecifiedEntitySetNameExist())
{
return(null);
}
// Map 'entity-set name' to 'entity-type short name'.
string entityTypeShortName = entitySetName.MapEntitySetNameToEntityTypeShortName();
string targetShortName = string.IsNullOrEmpty(actualEntityTypeShortName) ? entityTypeShortName : actualEntityTypeShortName;
if (string.IsNullOrEmpty(entityTypeShortName))
{
throw new Exception("Failed to convert entity-set name to entity-type short name.");
}
var keyProperties = MetadataHelper.GetKeyProperties(this.metadataDoc, entityTypeShortName);
JObject entity = null;
// The multiple-key entities are very complex to construct, so the program only filter the single-key entities.
if (null != keyProperties && 1 == keyProperties.Count())
{
var keyProperty = keyProperties.First();
if (!KeyPropertyTypes.Contains(keyProperty.PropertyType))
{
return(entity);
}
// Convert 'entity-set name' to 'entity-set URL'.
string entitySetURL = entitySetName.MapEntitySetNameToEntitySetURL();
if (string.IsNullOrEmpty(entitySetURL))
{
throw new Exception("Failed to convert to entity-set name to entity-set URL.");
}
string url = string.Format("{0}/{1}", this.rootURL.TrimEnd('/'), entitySetURL);
var resp = WebHelper.Get(new Uri(url), Constants.V4AcceptHeaderJsonFullMetadata, RuleEngineSetting.Instance().DefaultMaximumPayloadSize, null);
if (null != resp && HttpStatusCode.OK == resp.StatusCode)
{
JObject feed;
resp.ResponsePayload.TryToJObject(out feed);
if (null != feed)
{
var entries = JsonParserHelper.GetEntries(feed);
if (null != entries && entries.Any())
{
// If the current entity-type is a derived type, the program will get the entity with derived type from the feed.
// Otherwise, it will get the first entity from the feed.
entity = !string.IsNullOrEmpty(actualEntityTypeShortName) && actualEntityTypeShortName.IsSpecifiedEntityTypeShortNameExist() ?
this.GetDerivedEntity(entries, actualEntityTypeShortName) : entries.First as JObject;
// Set the new key value for the selected entity.
object keyValTemp = IntKeyPropertyTypes.Contains(keyProperty.PropertyType)
? this.GetMaxEntityKey(entries, keyProperty.PropertyName)
: entity[keyProperty.PropertyName];
object keyVal = this.GenerateEntityID(keyProperty.PropertyType, keyValTemp);
entity[keyProperty.PropertyName] = new JValue(keyVal);
string pattern = "Edm.String" == keyProperty.PropertyType ? "{0}('{1}')" : "{0}({1})";
entity[Constants.V4OdataId] = new JValue(string.Format(pattern, url, keyVal.ToString()));
string serviceNamespace = this.GetNamespace(targetShortName, "EntityType");
entity[Constants.V4OdataType] = new JValue(string.Format("#{0}.{1}", serviceNamespace, targetShortName));
}
}
}
}
return(entity);
}
