Golang meta.GenGlobalID函数代码示例

原作者: [db:作者] 来自: [db:来源] 收藏邀请

本文整理汇总了Golang中github.com/pingcap/tidb/meta.GenGlobalID函数的典型用法代码示例。如果您正苦于以下问题：Golang GenGlobalID函数的具体用法？Golang GenGlobalID怎么用？Golang GenGlobalID使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了GenGlobalID函数的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Golang代码示例。

示例1: TestT

func (*testSuite) TestT(c *C) {
	driver := localstore.Driver{Driver: goleveldb.MemoryDriver{}}
	store, err := driver.Open("memory")
	c.Assert(err, IsNil)
	defer store.Close()

	// For GenID
	txn, err := store.Begin()
	c.Assert(err, IsNil)
	key := []byte(meta.AutoIDKey(1))
	id, err := meta.GenID(txn, key, 1)
	c.Assert(id, Equals, int64(1))
	id, err = meta.GenID(txn, key, 2)
	c.Assert(id, Equals, int64(3))
	id, err = meta.GenID(txn, []byte{}, 1)
	c.Assert(err, NotNil)

	// For DBMetaKey
	mkey := meta.DBMetaKey(1)
	c.Assert(mkey, Equals, "mDB::1")

	//For AutoIDKey
	mkey = meta.AutoIDKey(1)
	c.Assert(mkey, Equals, "mTable::1_autoID")
	mkey = meta.AutoIDKey(0)
	c.Assert(mkey, Equals, "mTable::0_autoID")

	// For GenGlobalID
	id, err = meta.GenGlobalID(store)
	c.Assert(err, IsNil)
	c.Assert(id, Equals, int64(1))
	id, err = meta.GenGlobalID(store)
	c.Assert(err, IsNil)
	c.Assert(id, Equals, int64(2))
}

开发者ID:ninefive，项目名称:tidb，代码行数:35，代码来源:meta_test.go

示例2: CreateSchema

func (d *ddl) CreateSchema(ctx context.Context, schema model.CIStr) (err error) {
	is := d.GetInformationSchema()
	_, ok := is.SchemaByName(schema)
	if ok {
		return errors.Trace(ErrExists)
	}
	info := &model.DBInfo{Name: schema}
	info.ID, err = meta.GenGlobalID(d.store)
	if err != nil {
		return errors.Trace(err)
	}

	err = kv.RunInNewTxn(d.store, false, func(txn kv.Transaction) error {
		err := d.verifySchemaMetaVersion(txn, is.SchemaMetaVersion())
		if err != nil {
			return errors.Trace(err)
		}
		err = d.writeSchemaInfo(info, txn)
		return errors.Trace(err)
	})
	if d.onDDLChange != nil {
		err = d.onDDLChange(err)
	}
	return errors.Trace(err)
}

开发者ID:H0bby，项目名称:tidb，代码行数:25，代码来源:ddl.go

示例3: CreateSchema

func (d *ddl) CreateSchema(ctx context.Context, schema model.CIStr) (err error) {
	is := d.GetInformationSchema()
	_, ok := is.SchemaByName(schema)
	if ok {
		return ErrExists
	}
	info := &model.DBInfo{Name: schema}
	info.ID, err = meta.GenGlobalID(d.store)
	if err != nil {
		return errors.Trace(err)
	}
	err = d.writeSchemaInfo(info)
	if err != nil {
		return errors.Trace(err)
	}
	newInfo := append(is.Clone(), info)
	d.infoHandle.Set(newInfo)
	return nil
}

开发者ID:WilliamRen，项目名称:tidb，代码行数:19，代码来源:ddl.go

示例4: buildTableInfo

func (d *ddl) buildTableInfo(tableName model.CIStr, cols []*column.Col, constraints []*coldef.TableConstraint) (tbInfo *model.TableInfo, err error) {
	tbInfo = &model.TableInfo{
		Name: tableName,
	}
	tbInfo.ID, err = meta.GenGlobalID(d.store)
	if err != nil {
		return nil, errors.Trace(err)
	}
	for _, v := range cols {
		tbInfo.Columns = append(tbInfo.Columns, &v.ColumnInfo)
	}
	for _, constr := range constraints {
		// 1. check if the column is exists
		// 2. add index
		indexColumns := make([]*model.IndexColumn, 0, len(constr.Keys))
		for _, key := range constr.Keys {
			col := column.FindCol(cols, key.ColumnName)
			if col == nil {
				return nil, errors.Errorf("No such column: %v", key)
			}
			indexColumns = append(indexColumns, &model.IndexColumn{
				Name:   model.NewCIStr(key.ColumnName),
				Offset: col.Offset,
				Length: key.Length,
			})
		}
		idxInfo := &model.IndexInfo{
			Name:    model.NewCIStr(constr.ConstrName),
			Columns: indexColumns,
		}
		switch constr.Tp {
		case coldef.ConstrPrimaryKey:
			idxInfo.Unique = true
			idxInfo.Primary = true
			idxInfo.Name = model.NewCIStr(column.PrimaryKeyName)
		case coldef.ConstrUniq, coldef.ConstrUniqKey, coldef.ConstrUniqIndex:
			idxInfo.Unique = true
		}
		tbInfo.Indices = append(tbInfo.Indices, idxInfo)
	}
	return
}

开发者ID:WilliamRen，项目名称:tidb，代码行数:42，代码来源:ddl.go

示例5: buildColumnAndConstraint

func (d *ddl) buildColumnAndConstraint(offset int, colDef *coldef.ColumnDef) (*column.Col, []*coldef.TableConstraint, error) {
	// set charset
	if len(colDef.Tp.Charset) == 0 {
		switch colDef.Tp.Tp {
		case mysql.TypeString, mysql.TypeVarchar, mysql.TypeVarString, mysql.TypeBlob, mysql.TypeTinyBlob, mysql.TypeMediumBlob, mysql.TypeLongBlob:
			colDef.Tp.Charset, colDef.Tp.Collate = getDefaultCharsetAndCollate()
		default:
			colDef.Tp.Charset = charset.CharsetBin
			colDef.Tp.Collate = charset.CharsetBin
		}
	}
	// convert colDef into col
	col, cts, err := coldef.ColumnDefToCol(offset, colDef)
	if err != nil {
		return nil, nil, errors.Trace(err)
	}
	col.ID, err = meta.GenGlobalID(d.store)
	if err != nil {
		return nil, nil, errors.Trace(err)
	}
	return col, cts, nil
}

开发者ID:WilliamRen，项目名称:tidb，代码行数:22，代码来源:ddl.go

注：本文中的github.com/pingcap/tidb/meta.GenGlobalID函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。