private void SetLinkedParameters(IMutateStatement statement, object data)
{
if (statement.Schema == null || statement.Schema.Token.Property.IsSimplex)
{
return;
}
var complex = (IEntityComplexPropertyMetadata)statement.Schema.Token.Property;
foreach (var link in complex.Links)
{
var parameter = statement.Parameters[link.Foreign.Name];
parameter.Value = this.GetValue(data, link.Principal.Name);
}
}
private void SetLinkedParameters(IMutateStatement statement, object data)
{
if (statement.Schema == null || statement.Schema.Token.Property.IsSimplex)
{
return;
}
var complex = (IDataEntityComplexProperty)statement.Schema.Token.Property;
UpdateStatement updation = null;
foreach (var link in complex.Links)
{
if (!statement.HasParameters || !statement.Parameters.TryGet(link.Foreign.Name, out var parameter))
{
continue;
}
if (link.Foreign.Sequence == null)
{
parameter.Value = this.GetValue(data, link.Principal.Name);
}
else if (statement.Schema.HasChildren && statement.Schema.Children.TryGet(link.Foreign.Name, out var member))
{
/*
* 如果复合属性的外链字段含序号器(自增)，链接参数值不能直接绑定必须通过执行器动态绑定
* 如果当前语句为新增并且含有主键，则在该语句执行之后由其从属语句再更新对应的外链字段的序号器(自增)值
*/
parameter.Schema = member;
if (statement is InsertStatement && link.Principal.Entity.Key.Length > 0)
{
if (updation == null)
{
updation = new UpdateStatement(link.Principal.Entity);
statement.Slaves.Add(updation);
foreach (var key in link.Principal.Entity.Key)
{
var equals = Expression.Equal(
updation.Table.CreateField(key),
Expression.Constant(GetValue(data, key.Name)));
if (updation.Where == null)
{
updation.Where = equals;
}
else
{
updation.Where = Expression.AndAlso(updation.Where, equals);
}
}
}
var field = updation.Table.CreateField(link.Principal);
var fieldValue = Expression.Parameter(field, new SchemaMember(member.Token));
updation.Fields.Add(new FieldValue(field, fieldValue));
updation.Parameters.Add(fieldValue);
}
}
}
}
private void SetLinkedParameters(IMutateStatement statement, object data)
{
if (statement.Schema == null || statement.Schema.Token.Property.IsSimplex)
{
return;
}
var complex = (IDataEntityComplexProperty)statement.Schema.Token.Property;
UpdateStatement updation = null;
for (int i = 0; i < complex.Links.Length; i++)
{
var link = complex.Links[i];
if (!statement.HasParameters || !statement.Parameters.TryGet(link.ForeignKey.Name, out var parameter))
{
continue;
}
if (link.ForeignKey.Sequence == null)
{
object refer = data;
foreach (var anchor in link.GetAnchors())
{
if (Utility.TryGetMemberValue(ref refer, anchor.Name, out var value))
{
refer = value;
}
}
parameter.Value = refer;
}
else if (statement.Schema.HasChildren && statement.Schema.Children.TryGet(link.ForeignKey.Name, out var member))
{
/*
* 如果复合属性的外链字段含序号器(自增)，链接参数值不能直接绑定必须通过执行器动态绑定
* 如果当前语句为新增或增改并且含有主键，则在该语句执行之后由其从属语句再更新对应的外链字段的序号器(自增)值
*/
parameter.Schema = member;
if (complex.Entity.Key.Length > 0 && (statement is InsertStatement || statement is UpsertStatement))
{
if (updation == null)
{
updation = new UpdateStatement(complex.Entity);
statement.Slaves.Add(updation);
foreach (var key in complex.Entity.Key)
{
var equals = Expression.Equal(
updation.Table.CreateField(key),
Expression.Constant(Utility.GetMemberValue(ref data, key.Name) ?? Utility.GetDefaultValue(key.Type, key.Nullable)));
if (updation.Where == null)
{
updation.Where = equals;
}
else
{
updation.Where = Expression.AndAlso(updation.Where, equals);
}
}
}
var field = updation.Table.CreateField(link.GetAnchors()[0]);
var fieldValue = Expression.Parameter(field, new SchemaMember(member.Token));
updation.Fields.Add(new FieldValue(field, fieldValue));
updation.Parameters.Add(fieldValue);
}
}
}
}
