本文整理汇总了Golang中github.com/cockroachdb/cockroach/sql/sqlbase.Descriptor.GetTable方法的典型用法代码示例。如果您正苦于以下问题:Golang Descriptor.GetTable方法的具体用法?Golang Descriptor.GetTable怎么用?Golang Descriptor.GetTable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类github.com/cockroachdb/cockroach/sql/sqlbase.Descriptor
的用法示例。
在下文中一共展示了Descriptor.GetTable方法的3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: GetZoneConfig
// GetZoneConfig returns the zone config for the object with 'id'.
func GetZoneConfig(cfg config.SystemConfig, id uint32) (config.ZoneConfig, bool, error) {
// Look in the zones table.
if zoneVal := cfg.GetValue(sqlbase.MakeZoneKey(sqlbase.ID(id))); zoneVal != nil {
var zone config.ZoneConfig
// We're done.
return zone, true, zoneVal.GetProto(&zone)
}
// No zone config for this ID. We need to figure out if it's a database
// or table. Lookup its descriptor.
if descVal := cfg.GetValue(sqlbase.MakeDescMetadataKey(sqlbase.ID(id))); descVal != nil {
// Determine whether this is a database or table.
var desc sqlbase.Descriptor
if err := descVal.GetProto(&desc); err != nil {
return config.ZoneConfig{}, false, err
}
if tableDesc := desc.GetTable(); tableDesc != nil {
// This is a table descriptor. Lookup its parent database zone config.
return GetZoneConfig(cfg, uint32(tableDesc.ParentID))
}
}
// Retrieve the default zone config, but only as long as that wasn't the ID
// we were trying to retrieve (avoid infinite recursion).
if id != keys.RootNamespaceID {
return GetZoneConfig(cfg, keys.RootNamespaceID)
}
// No descriptor or not a table.
return config.ZoneConfig{}, false, nil
}
示例2: isDeleted
func isDeleted(tableID sqlbase.ID, cfg config.SystemConfig) bool {
descKey := sqlbase.MakeDescMetadataKey(tableID)
val := cfg.GetValue(descKey)
if val == nil {
return false
}
var descriptor sqlbase.Descriptor
if err := val.GetProto(&descriptor); err != nil {
panic("unable to unmarshal table descriptor")
}
table := descriptor.GetTable()
return table.Deleted()
}
示例3: isRenamed
// isRenamed tests if a descriptor is updated by gossip to the specified name
// and version.
func isRenamed(
tableID sqlbase.ID,
expectedName string,
expectedVersion sqlbase.DescriptorVersion,
cfg config.SystemConfig,
) bool {
descKey := sqlbase.MakeDescMetadataKey(tableID)
val := cfg.GetValue(descKey)
if val == nil {
return false
}
var descriptor sqlbase.Descriptor
if err := val.GetProto(&descriptor); err != nil {
panic("unable to unmarshal table descriptor")
}
table := descriptor.GetTable()
return table.Name == expectedName && table.Version == expectedVersion
}