catalog

package

v0.0.1 Latest Latest Go to latest Published: Jun 28, 2022 License: MIT Imports: 10 Imported by: 0

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Repository

github.com/ryogrid/SamehadaDB

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Documentation ¶

Index ¶

Constants
func ColumnsCatalogSchema() *schema.Schema
func Int32toBool(val int32) bool
func TableCatalogSchema() *schema.Schema
type Catalog
- func BootstrapCatalog(bpm *buffer.BufferPoolManager, log_manager *recovery.LogManager, ...) *Catalog
- func RecoveryCatalogFromCatalogPage(bpm *buffer.BufferPoolManager, log_manager *recovery.LogManager, ...) *Catalog
type TableMetadata
- func NewTableMetadata(schema *schema.Schema, name string, table *access.TableHeap, oid uint32) *TableMetadata

Constants ¶

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const ColumnsCatalogOID = 0

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const ColumnsCatalogPageId = 1

ColumnsCatalogPageId indicates the page where the columns catalog can be found The second page is reserved for the table catalog

View Source

const TableCatalogPageId = 0

TableCatalogPageId indicates the page where the table catalog can be found The first page is reserved for the table catalog

Variables ¶

This section is empty.

Functions ¶

func ColumnsCatalogSchema ¶

func ColumnsCatalogSchema() *schema.Schema

func Int32toBool ¶

func Int32toBool(val int32) bool

func TableCatalogSchema ¶

func TableCatalogSchema() *schema.Schema

Types ¶

type Catalog ¶

type Catalog struct {
	Log_manager  *recovery.LogManager
	Lock_manager *access.LockManager
	// contains filtered or unexported fields
}

Catalog is a non-persistent catalog that is designed for the executor to use. It handles table creation and table lookup

func BootstrapCatalog ¶

func BootstrapCatalog(bpm *buffer.BufferPoolManager, log_manager *recovery.LogManager, lock_manager *access.LockManager, txn *access.Transaction) *Catalog

BootstrapCatalog bootstrap the systems' catalogs on the first database initialization

func RecoveryCatalogFromCatalogPage ¶

func RecoveryCatalogFromCatalogPage(bpm *buffer.BufferPoolManager, log_manager *recovery.LogManager, lock_manager *access.LockManager, txn *access.Transaction) *Catalog

TODO: (SDB) need call RecoveryCatalogFromCatalogPage when recovery or database re-launch RecoveryCatalogFromCatalogPage get all information about tables and columns from disk and put it on memory

func (*Catalog) CreateTable ¶

func (c *Catalog) CreateTable(name string, schema *schema.Schema, txn *access.Transaction) *TableMetadata

CreateTable creates a new table and return its metadata

func (*Catalog) GetTableByName ¶

func (c *Catalog) GetTableByName(table string) *TableMetadata

func (*Catalog) GetTableByOID ¶

func (c *Catalog) GetTableByOID(oid uint32) *TableMetadata

type TableMetadata ¶

type TableMetadata struct {
	// contains filtered or unexported fields
}

func NewTableMetadata ¶

func NewTableMetadata(schema *schema.Schema, name string, table *access.TableHeap, oid uint32) *TableMetadata

func (*TableMetadata) GetColumnNum ¶

func (t *TableMetadata) GetColumnNum() uint32

func (*TableMetadata) GetIndex ¶

func (t *TableMetadata) GetIndex(colIndex int) index.Index

func (*TableMetadata) OID ¶

func (t *TableMetadata) OID() uint32

func (*TableMetadata) Schema ¶

func (t *TableMetadata) Schema() *schema.Schema

func (*TableMetadata) Table ¶

func (t *TableMetadata) Table() *access.TableHeap

Source Files ¶

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