public void Test_Partial()
{
Writer w = new Writer(@"F:\FileIOTest\test.mig");
PartialWriter pw = w.CreatePartial("student", "学生信息");
List <Student> list = new List <Student>();
for (int i = 0; i < 1000; i++)
{
list.Add(new Student());
}
pw.Append(typeof(Student).Name, list);
pw.Commit();
pw = w.CreatePartial("students", "aaa");
for (int i = 0; i < 1000; i++)
{
pw.Append($"student_{i}", new Student());
}
pw.Commit();
w.Commit();
}
public override void ExecTableSchema()
{
PartialWriter pw = writer.CreatePartial("tableSchema", "表结构的详细信息");
foreach (var tableProfile in Profile.ImpTables)
{
try
{
Table tableDetail = Domain.Helper.Tables.GetTableDetails(Profile.SourceConnString, tableProfile.TableName);
pw.Append(tableDetail.Name, tableDetail);
MigrateLog[tableProfile.TableName].TableStruct = MigrateState.Finished;
UpdateMessage($"{tableProfile.TableName}表结构导出完成");
}
catch (Exception ex)
{
UpdateMessage($"{tableProfile.TableName}表结构导出失败:\n{ex.Message}");
}
finally
{
IncreaseFinishedTask();
}
}
pw.Commit();
}
protected override void BeforeExecute()
{
base.BeforeExecute();
string file = Path.GetFileName(Profile.TargetFile);
string dir = System.Environment.GetEnvironmentVariable("TEMP");
writer = new Writer(file, dir);
PartialWriter pw = writer.CreatePartial("profile", "导出表的信息");
pw.Append("ImpTables", Profile.ImpTables);
pw.Append("taskSumCount", taskSumCount);
pw.Commit();
}
public override void ExecStorage()
{
PartialWriter pw = writer.CreatePartial("storage", "数据");
int page_index = 0;
IEnumerable <TableProfile> tableIncludeStorage = Profile.ImpTables.Where(item => item.IncludeStorage);
foreach (var tableProfile in tableIncludeStorage)
{
try
{
Table tableDetail = Domain.Helper.Tables.GetTableDetails(Profile.SourceConnString, tableProfile.TableName);
MDataSet dataSet = new MDataSet(tableDetail.Name, tableDetail.Columns.Select(item => item.Name).ToArray());
int total = Domain.Helper.Stores.Count(Profile.SourceConnString, tableProfile.TableName);
int page = 0, pageSize = 100;
while (true)
{
page++;
int start = (page - 1) * pageSize + 1;
if (start > total)
{
break;
}
System.Data.IDataReader dr = Domain.Helper.Stores.ReadPage(Profile.SourceConnString, tableProfile.TableName, start, pageSize);
dataSet.SetDataSource(dr);
pw.Append($"{page_index++}", dataSet);
}
MigrateLog[tableProfile.TableName].Storage = MigrateState.Finished;
UpdateMessage($"{tableProfile.TableName}数据导出完成");
}
catch (Exception ex)
{
UpdateMessage($"{tableProfile.TableName}数据导出失败:{ex.Message}");
}
finally
{
IncreaseFinishedTask();
}
}
pw.Commit();
}
public override void ExecConstraints()
{
PartialWriter pw = writer.CreatePartial("constraint", "约束结构");
// 需要创建约束的表
IEnumerable <string> tableIncludeConstraint = Profile.ImpTables.Where(item => item.IncludeConstraint).Select(item => item.TableName);
IEnumerable <Constraint> consts = Domain.Helper.Constraints.GetOwnerConstraints(Profile.SourceConnString)
.Where(item => tableIncludeConstraint.Contains(item.TableName));
// 规定约束建立的顺序
List <Constraint> list = new List <Constraint>();
list.AddRange(consts.Where(item => item.Type == "P"));
list.AddRange(consts.Where(item => item.Type == "U"));
list.AddRange(consts.Where(item => item.Type == "R"));
foreach (var c in list)
{
try
{
Constraint con = Domain.Helper.Constraints.GetConstraintDetail(Profile.SourceConnString, c.Name);
pw.Append(c.Name, con);
UpdateMessage($"{c.Name}约束导出成功");
}
catch (Exception ex)
{
UpdateMessage($"{c.Name}约束导出失败:{ex.Message}");
}
finally
{
IncreaseFinishedTask();
}
}
pw.Commit();
}