/// <summary>
/// Initializes a new instance of the QueryKeyStructuralValue class.
/// </summary>
/// <param name="entityInstance">Entity Instance</param>
internal QueryKeyStructuralValue(QueryEntityValue entityInstance)
: base(entityInstance.Type, false, null, entityInstance.Type.EvaluationStrategy)
{
ExceptionUtilities.CheckArgumentNotNull(entityInstance, "entityInstance");
this.queryEntityType = entityInstance.Type as QueryEntityType;
this.keyProperties = this.queryEntityType.Properties.Where(p => p.IsPrimaryKey).ToList();
ExceptionUtilities.CheckObjectNotNull(this.queryEntityType, "queryEntityType");
ExceptionUtilities.Assert(this.keyProperties.Count > 0, "There are no key properties on QueryEntityType '{0}'", this.queryEntityType);
foreach (QueryProperty keyProperty in this.keyProperties)
{
this.SetValue(keyProperty.Name, entityInstance.GetScalarValue(keyProperty.Name));
}
}
/// <summary>
/// Creates a key structural value for a QueryEntityValue
/// </summary>
/// <param name="queryEntityType">Query Entity Type that has key metadata to extract key information</param>
/// <param name="entityInstance">Entity Instance object value that contains the key</param>
/// <returns>A Query Key Structural Value</returns>
public static QueryKeyStructuralValue GetEntityInstanceKey(this QueryEntityType queryEntityType, object entityInstance)
{
ExceptionUtilities.CheckArgumentNotNull(queryEntityType, "queryEntityType");
ExceptionUtilities.CheckArgumentNotNull(entityInstance, "entityInstance");
ExceptionUtilities.Assert(queryEntityType.ClrType.IsAssignableFrom(entityInstance.GetType()), "entityInstance of type '{0}' is not assignable to queryEntityType '{1}'", entityInstance.GetType(), queryEntityType.EntityType.FullName);
QueryEntityValue keyValueContainer = new QueryEntityValue(queryEntityType, false, null, queryEntityType.EvaluationStrategy);
foreach (QueryProperty keyProperty in queryEntityType.Properties.Where(m => m.IsPrimaryKey))
{
PropertyInfo pi = entityInstance.GetType().GetProperty(keyProperty.Name);
keyValueContainer.SetPrimitiveValue(keyProperty.Name, pi.GetValue(entityInstance, null));
}
return(new QueryKeyStructuralValue(keyValueContainer));
}
/// <summary>
/// Gets the related entity type for the given navigation property on the entity type
/// </summary>
/// <param name="entityType">The entity type</param>
/// <param name="navigationPropertyName">The name of the navigation property</param>
/// <returns>The entity type related to the current one via the navigation property</returns>
public static QueryEntityType GetRelatedEntityType(this QueryEntityType entityType, string navigationPropertyName)
{
ExceptionUtilities.CheckArgumentNotNull(entityType, "entityType");
ExceptionUtilities.CheckArgumentNotNull(navigationPropertyName, "navigationPropertyName");
var propertyType = entityType.Properties.Where(p => p.Name == navigationPropertyName).Select(p => p.PropertyType).SingleOrDefault();
ExceptionUtilities.CheckObjectNotNull(propertyType, "Could not find type of property '{0}' on type '{1}'", navigationPropertyName, entityType.StringRepresentation);
QueryEntityType propertyEntityType = propertyType as QueryEntityType;
if (propertyEntityType == null)
{
var collectionType = propertyType as QueryCollectionType;
ExceptionUtilities.CheckObjectNotNull(collectionType, "Property '{0}' on type '{1}' was neither an entity nor collection type. Type was '{2}'", navigationPropertyName, entityType.StringRepresentation, propertyType.StringRepresentation);
propertyEntityType = collectionType.ElementType as QueryEntityType;
}
ExceptionUtilities.CheckObjectNotNull(propertyEntityType, "Property '{0}' on type '{1}' was neither an entity nor collection type. Type was '{2}'", navigationPropertyName, entityType.StringRepresentation, propertyType.StringRepresentation);
return(propertyEntityType);
}
internal void SetReferenceValue(QueryStructuralValue entityValue)
{
ExceptionUtilities.CheckArgumentNotNull(entityValue, "entityValue");
this.EntityValue = entityValue;
// compute key value
QueryEntityType entityType = this.Type.QueryEntityType;
var keyType = new QueryRecordType(this.EvaluationStrategy);
keyType.AddProperties(entityType.Properties.Where(m => m.IsPrimaryKey));
this.KeyValue = keyType.CreateNewInstance();
for (int i = 0; i < keyType.Properties.Count; i++)
{
this.KeyValue.SetMemberValue(i, entityValue.GetValue(keyType.Properties[i].Name));
}
var set = entityType.EntitySet;
this.EntitySetFullName = set.Container.Name + "." + set.Name;
}
/// <summary>
/// Initializes a new instance of the QueryEntityValue class.
/// </summary>
/// <param name="type">The type of the value.</param>
/// <param name="isNull">If set to <c>true</c> the structural value is null.</param>
/// <param name="evaluationError">The evaluation error.</param>
/// <param name="evaluationStrategy">The evaluation strategy.</param>
internal QueryEntityValue(QueryEntityType type, bool isNull, QueryError evaluationError, IQueryEvaluationStrategy evaluationStrategy)
: base(type, isNull, evaluationError, evaluationStrategy)
{
this.navigateResultLookup = new Dictionary <AssociationType, Dictionary <AssociationEnd, QueryValue> >();
}
/// <summary>
/// Sets query type for a given entity type
/// </summary>
/// <param name="entitySet">The entity set</param>
/// <param name="entityType">The entity type</param>
/// <param name="queryType">The corresponding query type to be set</param>
internal void SetQueryEntityType(EntitySet entitySet, EntityType entityType, QueryEntityType queryType)
{
this.queryEntityTypeCache[GetCacheKey(entitySet.Container, entitySet, entityType)] = queryType;
this.defaultQueryEntityTypes[entityType] = queryType;
}
/// <summary>
/// Initializes a new instance of the QueryReferenceType class.
/// </summary>
/// <param name="evaluationStrategy">The evaluation strategy</param>
/// <param name="queryEntityType">The referenced query entity type</param>
internal QueryReferenceType(IQueryEvaluationStrategy evaluationStrategy, QueryEntityType queryEntityType)
: base(evaluationStrategy)
{
ExceptionUtilities.CheckArgumentNotNull(queryEntityType, "queryEntityType");
this.QueryEntityType = queryEntityType;
}