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补充 开放 IUpdate UpdateColumns 方法功能；

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现实更新实体时，只更新指定的列（与 IgnoreColumns 对应）；
This commit is contained in:
28810
2019-04-15 17:54:45 +08:00
parent e5ba4b1974
commit 9245909d79
7 changed files with 61 additions and 0 deletions
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13
FreeSql/Interface/Curd/IUpdate.cs
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@ -51,6 +51,19 @@ namespace FreeSql {
/// <returns></returns>
IUpdate<T1> IgnoreColumns(string[] columns);
/// <summary>
/// 指定的列，UpdateColumns(a => a.Name) | UpdateColumns(a => new{a.Name,a.Time}) | UpdateColumns(a => new[]{"name","time"})
/// </summary>
/// <param name="columns">lambda选择列</param>
/// <returns></returns>
IUpdate<T1> UpdateColumns(Expression<Func<T1, object>> columns);
/// <summary>
/// 指定的列
/// </summary>
/// <param name="columns"></param>
/// <returns></returns>
IUpdate<T1> UpdateColumns(string[] columns);
/// <summary>
/// 设置列的新值，Set(a => a.Name, "newvalue")
/// </summary>

17
FreeSql/Internal/CommonProvider/UpdateProvider.cs
View File

@ -264,11 +264,28 @@ namespace FreeSql.Internal.CommonProvider {
foreach (var col in cols) _ignore.Add(col, true);
return this;
}
public IUpdate<T1> UpdateColumns(Expression<Func<T1, object>> columns) {
var cols = _commonExpression.ExpressionSelectColumns_MemberAccess_New_NewArrayInit(null, columns?.Body, false, null).ToDictionary(a => a, a => true);
_ignore.Clear();
foreach (var col in _table.Columns.Values)
if (cols.ContainsKey(col.Attribute.Name) == false)
_ignore.Add(col.Attribute.Name, true);
return this;
}
public IUpdate<T1> IgnoreColumns(string[] columns) {
_ignore.Clear();
foreach (var col in columns) _ignore.Add(col, true);
return this;
}
public IUpdate<T1> UpdateColumns(string[] columns) {
var cols = columns.ToDictionary(a => a);
_ignore.Clear();
foreach (var col in _table.Columns.Values)
if (cols.ContainsKey(col.Attribute.Name) == false)
_ignore.Add(col.Attribute.Name, true);
return this;
}
public IUpdate<T1> SetSource(T1 source) => this.SetSource(new[] { source });
public IUpdate<T1> SetSource(IEnumerable<T1> source) {