Ejemplo n.º 1
0
        /// <summary>
        /// Creates a key structural value for a QueryEntityValue
        /// </summary>
        /// <param name="queryEntityValue">Query EntityValue to create the key from</param>
        /// <returns>A Query Key Structural Value</returns>
        public static QueryKeyStructuralValue Key(this QueryEntityValue queryEntityValue)
        {
            ExceptionUtilities.CheckArgumentNotNull(queryEntityValue, "queryEntityValue");
            ExceptionUtilities.Assert(!queryEntityValue.IsNull, "queryEntityValue cannot be null");

            return(new QueryKeyStructuralValue(queryEntityValue));
        }
Ejemplo n.º 2
0
        /// <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));
            }
        }
Ejemplo n.º 3
0
        /// <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));
            }
        }
Ejemplo n.º 4
0
        /// <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));
        }