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C# IProperty.FindContainingKeys方法代码示例

本文整理汇总了C#中IProperty.FindContainingKeys方法的典型用法代码示例。如果您正苦于以下问题:C# IProperty.FindContainingKeys方法的具体用法?C# IProperty.FindContainingKeys怎么用?C# IProperty.FindContainingKeys使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在IProperty的用法示例。


在下文中一共展示了IProperty.FindContainingKeys方法的2个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C#代码示例。

示例1: DetectKeyChange

        private void DetectKeyChange(InternalEntityEntry entry, IProperty property, Sidecar snapshot)
        {
            if (!snapshot.HasValue(property))
            {
                return;
            }

            var keys = property.FindContainingKeys().ToList();
            var foreignKeys = property.FindContainingForeignKeys(entry.EntityType).ToList();

            if (keys.Count > 0
                || foreignKeys.Count > 0)
            {
                var snapshotValue = snapshot[property];
                var currentValue = entry[property];

                // Note that mutation of a byte[] key is not supported or detected, but two different instances
                // of byte[] with the same content must be detected as equal.
                if (!StructuralComparisons.StructuralEqualityComparer.Equals(currentValue, snapshotValue))
                {
                    var stateManager = entry.StateManager;

                    if (foreignKeys.Count > 0)
                    {
                        stateManager.Notify.ForeignKeyPropertyChanged(entry, property, snapshotValue, currentValue);

                        foreach (var foreignKey in foreignKeys)
                        {
                            stateManager.UpdateDependentMap(entry, snapshot.GetDependentKeyValue(foreignKey), foreignKey);
                        }
                    }

                    if (keys.Count > 0)
                    {
                        foreach (var key in keys)
                        {
                            stateManager.UpdateIdentityMap(entry, snapshot.GetPrincipalKeyValue(key), key);
                        }

                        stateManager.Notify.PrincipalKeyPropertyChanged(entry, property, snapshotValue, currentValue);
                    }

                    snapshot.TakeSnapshot(property);
                }
            }
        }
开发者ID:adwardliu,项目名称:EntityFramework,代码行数:46,代码来源:ChangeDetector.cs

示例2: DetectKeyChange

        private static void DetectKeyChange(InternalEntityEntry entry, IProperty property)
        {
            if (property.GetRelationshipIndex() >= 0)
            {
                var snapshotValue = entry.GetRelationshipSnapshotValue(property);
                var currentValue = entry[property];

                // Note that mutation of a byte[] key is not supported or detected, but two different instances
                // of byte[] with the same content must be detected as equal.
                if (!StructuralComparisons.StructuralEqualityComparer.Equals(currentValue, snapshotValue))
                {
                    var keys = property.FindContainingKeys().ToList();
                    var foreignKeys = property.FindContainingForeignKeys().ToList();

                    entry.StateManager.Notify.KeyPropertyChanged(entry, property, keys, foreignKeys, snapshotValue, currentValue);
                }
            }
        }
开发者ID:ChuYuzhi,项目名称:EntityFramework,代码行数:18,代码来源:ChangeDetector.cs


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