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Merge pull request #37 from NewLifeX/pgsql_array
Pgsql array
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,40 @@ | ||
| using System.Collections; | ||
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| namespace XCode; | ||
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| /// <remarks> | ||
| /// Array 部分的实现，先尽量保持简洁。 | ||
| /// 后续更强大的转换，再补充。 | ||
| /// </remarks> | ||
| public partial class ValidHelper | ||
| { | ||
| private static T[]? ToArray<T>(Object? value, Func<object?, T> converter) | ||
| { | ||
| if (value is T[] arr) return arr; | ||
| if (value is null || Convert.IsDBNull(value)) return default; | ||
| if (value is IEnumerable<T> list) return list.ToArray(); | ||
| if (value is T v) return new T[] { v }; | ||
| if (value is IEnumerable) | ||
| { | ||
| var ret = new List<T>(); | ||
| foreach (var item in (IEnumerable)value) | ||
| { | ||
| ret.Add(converter.Invoke(item)); | ||
| } | ||
| return ret.ToArray(); | ||
| } | ||
| return default; | ||
| } | ||
| public static Int32[]? ToInt32Array(Object? value) => ToArray(value, ToInt32); | ||
| public static Int64[]? ToInt64Array(Object? value) => ToArray(value, ToInt64); | ||
| public static Double[]? ToDoubleArray(Object? value) => ToArray(value, ToDouble); | ||
| public static Boolean[]? ToBooleanArray(Object? value) => ToArray(value, ToBoolean); | ||
| public static DateTime[]? ToDateTimeArray(Object? value) => ToArray(value, ToDateTime); | ||
| public static String[]? ToStringArray(Object? value) => ToArray(value, ToString); | ||
| public static Byte[]? ToByteArray(Object? value) => ToArray(value, ToByte); | ||
| public static Decimal[]? ToDecimalArray(Object? value) => ToArray(value, ToDecimal); | ||
| public static Int16[]? ToInt16Array(Object? value) => ToArray(value, ToInt16); | ||
| public static UInt64[]? ToUInt64Array(Object? value) => ToArray(value, ToUInt64); | ||
| public static T[]? ToEnumArray<T>(Object? value) where T : struct => ToArray(value, ToEnum<T>); | ||
| public static T[]? ToObjectArray<T>(Object? value) where T : class => ToArray(value, ToObject<T>); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,116 @@ | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.Linq; | ||
| using System.Text; | ||
| using System.Threading.Tasks; | ||
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| namespace XCode; | ||
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| /// <summary>用户数据类型转换</summary> | ||
| public static partial class ValidHelper | ||
| { | ||
| /// <summary>转为整数，转换失败时返回默认值。支持字符串、全角、字节数组（小端）、时间（Unix秒不转UTC）</summary> | ||
| /// <remarks>Int16/UInt32/Int64等，可以先转为最常用的Int32后再二次处理</remarks> | ||
| /// <param name="value">待转换对象</param> | ||
| public static Int32 ToInt32(object? value) | ||
| { | ||
| return value.ToInt(); | ||
| } | ||
|
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| /// <summary>转为长整数，转换失败时返回默认值。支持字符串、全角、字节数组（小端）、时间（Unix毫秒不转UTC）</summary> | ||
| /// <param name="value">待转换对象</param> | ||
| public static Int64 ToInt64(object? value) | ||
| { | ||
| return value.ToLong(); | ||
| } | ||
|
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| /// <summary>转为浮点数，转换失败时返回默认值。支持字符串、全角、字节数组（小端）</summary> | ||
| /// <remarks>Single可以先转为最常用的Double后再二次处理</remarks> | ||
| /// <param name="value">待转换对象</param> | ||
| public static Double ToDouble(object? value) | ||
| { | ||
| return value.ToDouble(); | ||
| } | ||
|
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| /// <summary>转为布尔型，转换失败时返回默认值。支持大小写True/False、0和非零</summary> | ||
| /// <param name="value">待转换对象</param> | ||
| public static Boolean ToBoolean(object? value) | ||
| { | ||
| return value.ToBoolean(); | ||
| } | ||
|
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| /// <summary>转为时间日期，转换失败时返回最小时间。支持字符串、整数（Unix秒不考虑UTC转本地）</summary> | ||
| /// <remarks> | ||
| /// 整数转时间日期时，取1970-01-01加上指定秒数，不考虑UTC时间和本地时间。 | ||
| /// 长整数转时间日期时，取1970-01-01加上指定毫秒数，不考虑UTC时间和本地时间。 | ||
| /// 在网络中传输时间日期时，特别是物联网设备到云平台的通信，一般取客户端本地UTC时间，转为长整型传输，服务端再转为本地时间。 | ||
| /// 因为设备和服务端可能不在同一时区，甚至多个设备也没有处于同一个时区。 | ||
| /// </remarks> | ||
| /// <param name="value">待转换对象</param> | ||
| public static DateTime ToDateTime(object? value) | ||
| { | ||
| return value.ToDateTime(); | ||
| } | ||
|
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| /// <summary> | ||
| /// 将指定的值转换为其等效的字符串表示形式。 | ||
| /// </summary> | ||
| public static String ToString(object? value) | ||
| { | ||
| return Convert.ToString(value); | ||
| } | ||
|
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| /// <summary> | ||
| /// Convert.ToByte | ||
| /// </summary> | ||
| public static Byte ToByte(object? value) | ||
| { | ||
| return Convert.ToByte(value); | ||
| } | ||
|
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| /// <summary> | ||
| /// Convert.ToDecimal | ||
| /// </summary> | ||
| public static Decimal ToDecimal(object? value) | ||
| { | ||
| return Convert.ToDecimal(value); | ||
| } | ||
|
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| /// <summary> | ||
| /// Convert.ToInt16 | ||
| /// </summary> | ||
| public static Int16 ToInt16(object? value) | ||
| { | ||
| return Convert.ToInt16(value); | ||
| } | ||
|
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| /// <summary> | ||
| /// Convert.ToUInt64 | ||
| /// </summary> | ||
| public static UInt64 ToUInt64(object? value) | ||
| { | ||
| return Convert.ToUInt64(value); | ||
| } | ||
|
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| /// <summary> | ||
| /// 转换为枚举 | ||
| /// </summary> | ||
| public static T ToEnum<T>(object? value) where T : struct | ||
| { | ||
| if (value is T t) return t; | ||
| if (value is null || Convert.IsDBNull(value)) return default; | ||
| if (typeof(T).IsEnum) | ||
| { | ||
| if (value is string str) return (T)Enum.Parse(typeof(T), str, true); | ||
| } | ||
| return (T)value; | ||
| } | ||
|
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| public static T? ToObject<T>(object? value) where T : class | ||
| { | ||
| if (value is T t) return t; | ||
| if (value is null || Convert.IsDBNull(value)) return default; | ||
| //这里怎么实现呢？ | ||
| return default; | ||
| } | ||
| } |
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