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Golang Meta.CreateDatabase方法代码示例

本文整理汇总了Golang中github.com/pingcap/tidb/meta.Meta.CreateDatabase方法的典型用法代码示例。如果您正苦于以下问题:Golang Meta.CreateDatabase方法的具体用法?Golang Meta.CreateDatabase怎么用?Golang Meta.CreateDatabase使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在github.com/pingcap/tidb/meta.Meta的用法示例。


在下文中一共展示了Meta.CreateDatabase方法的2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,您的评价将有助于系统推荐出更棒的Golang代码示例。

示例1: onCreateSchema

func (d *ddl) onCreateSchema(t *meta.Meta, job *model.Job) error {
	schemaID := job.SchemaID
	var name model.CIStr
	if err := job.DecodeArgs(&name); err != nil {
		// arg error, cancel this job.
		job.State = model.JobCancelled
		return errors.Trace(err)
	}

	dbInfo := &model.DBInfo{
		ID:    schemaID,
		Name:  name,
		State: model.StateNone,
	}

	dbs, err := t.ListDatabases()
	if err != nil {
		return errors.Trace(err)
	}

	for _, db := range dbs {
		if db.Name.L == name.L {
			if db.ID != schemaID {
				// database exists, can't create, we should cancel this job now.
				job.State = model.JobCancelled
				return errors.Trace(ErrExists)
			}

			dbInfo = db
		}
	}

	_, err = t.GenSchemaVersion()
	if err != nil {
		return errors.Trace(err)
	}

	switch dbInfo.State {
	case model.StateNone:
		// none -> public
		job.SchemaState = model.StatePublic
		dbInfo.State = model.StatePublic
		err = t.CreateDatabase(dbInfo)
		if err != nil {
			return errors.Trace(err)
		}
		// finish this job
		job.State = model.JobDone
		return nil
	default:
		// we can't enter here.
		return errors.Errorf("invalid db state %v", dbInfo.State)
	}
}
开发者ID:henrylee2cn,项目名称:tidb,代码行数:54,代码来源:schema.go

示例2: onCreateSchema

func (d *ddl) onCreateSchema(t *meta.Meta, job *model.Job) error {
	schemaID := job.SchemaID
	dbInfo := &model.DBInfo{}
	if err := job.DecodeArgs(dbInfo); err != nil {
		// arg error, cancel this job.
		job.State = model.JobCancelled
		return errors.Trace(err)
	}

	dbInfo.ID = schemaID
	dbInfo.State = model.StateNone

	dbs, err := t.ListDatabases()
	if err != nil {
		return errors.Trace(err)
	}

	for _, db := range dbs {
		if db.Name.L == dbInfo.Name.L {
			if db.ID != schemaID {
				// database exists, can't create, we should cancel this job now.
				job.State = model.JobCancelled
				return errors.Trace(infoschema.ErrDatabaseExists)
			}
			dbInfo = db
		}
	}

	ver, err := updateSchemaVersion(t, job)
	if err != nil {
		return errors.Trace(err)
	}

	switch dbInfo.State {
	case model.StateNone:
		// none -> public
		job.SchemaState = model.StatePublic
		dbInfo.State = model.StatePublic
		err = t.CreateDatabase(dbInfo)
		if err != nil {
			return errors.Trace(err)
		}
		// finish this job
		job.State = model.JobDone
		addDBHistoryInfo(job, ver, dbInfo)
		return nil
	default:
		// we can't enter here.
		return errors.Errorf("invalid db state %v", dbInfo.State)
	}
}
开发者ID:jmptrader,项目名称:tidb,代码行数:51,代码来源:schema.go


注:本文中的github.com/pingcap/tidb/meta.Meta.CreateDatabase方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,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。