/// <summary>
/// 创值插入值语句。
/// </summary>
/// <param name="context">生成上下文。</param>
/// <param name="target">插入目标语句。</param>
/// <param name="source">用于插入的提交对象语句块。</param>
/// <param name="data">插入的数据集合。</param>
public InsertValueFragment(GenerateContext context, ISourceFragment target, CommitObjectFragment source, IEnumerable data)
: base(context)
{
Target = target;
Data = data;
Source = source;
_KeyValues = new Dictionary <ColumnMetadata, ISqlFragment>();
}
/// <summary>
/// 创建数据对象。
/// </summary>
/// <param name="context">生成上下文。</param>
/// <param name="operate">当前操作对象。</param>
internal GenerateDataForCommit(GenerateContext context, DbObjectsOperateBase operate)
: base(context, operate)
{
if (operate is IConcurrencyCheckOperate concur)
{
NeedConcurrencyCheck = concur.NeedCheck;
}
Table = context.Metadata.Table(operate.ClrType);
TableCount = Table.InheritSets.Length + 1;
Items = operate;
Loader = CreateLoader(context, Table);
CommitObject = new CommitObjectFragment(context, Loader);
}
/// <summary>
/// 创建提交内容对象。
/// </summary>
/// <param name="context"></param>
/// <param name="operate"></param>
internal ContentBase(GenerateContext context, DbObjectsOperateBase operate)
: base(context, operate)
{
if (operate is IConcurrencyCheckOperate concur)
{
NeedConcurrencyCheck = concur.NeedCheck;
}
Table = context.Metadata.Table(operate.ClrType);
Items = operate;
Items = operate;
Loader = CreateLoader(context, Table);
CommitObject = new CommitObjectFragment(context, Loader);
}
/// <summary>
/// 创建数据对象。
/// </summary>
/// <param name="context">生成上下文。</param>
/// <param name="operate">当前操作对象。</param>
internal GenerateDataForRelation(GenerateContext context, DbRelationOperateBase operate)
: base(context, operate)
{
Items = operate;
IsAddRelation = operate.Type == EOperateType.AddRelation;
var navigate = operate.Navigate;
Source = navigate.Source;
Target = navigate.Target;
var firstloader = new PropertyValueLoader(context, Source, Source.Keys);
var secondloader = new PropertyValueLoader(context, Target, Target.Keys);
bool isreverse = false;
if (navigate.IsComposite)
{
var composite = (CompositeNavigateMetadata)navigate;
Table = composite.RelationTable;
}
else
{
if (navigate.IsForeign == true)
{
Table = navigate.Source;
}
else
{
Target = navigate.Source;
Source = navigate.Target;
firstloader = new PropertyValueLoader(context, Source, Source.Keys);
secondloader = new PropertyValueLoader(context, Target, Target.Keys);
Table = navigate.Target;
isreverse = true;
}
if (!IsAddRelation)
{
secondloader = null;
}
}
Loader = new RelationPropertyValueLoader(firstloader, secondloader)
{
IsReverse = isreverse
};
CommitObject = new CommitObjectFragment(context, Loader);
}
