CatalogManager Class Reference

Manage all the table names, attritbutes, and index existence. More...

#include <catalog.h>

Public Member Functions
	CatalogManager (BufferManager *bfm)
void	CreateTable (const std::string &table_name, Attribute &attr)
	Create a Table object. More...
void	UpdateIndex (const std::string &table_name, const std::string &attr_name, const std::string &index_name)
	Update Index. More...
void	DropTable (const std::string &table_name)
	Delete a table. More...
void	DropIndex (const std::string &table_name, const std::string &index_name)
	Delete an index file. More...
bool	existTable (const std::string &table_name)
	Judge if the table exists. More...
bool	existAttribute (const std::string &table_name, const std::string &attr_name)
	Judge if an attribute in of a table exists. More...
Attribute	getAttribute (const std::string &table_name)
	Get the Attribute from table name. More...
Index	getIndex (const std::string &table_name)
	Get the Index object from table name. More...
std::string	getIndexName (const std::string &table_name, const std::string &attr_name)
std::string	Index2Attr (const std::string &table_name, const std::string &attr_name, const std::string &index_name)
void	ShowTable (const std::string &table_name)
void	ShowAllTable ()
std::string	indexName2table (std::string &index_name) const

Detailed Description

Manage all the table names, attritbutes, and index existence.

Definition at line 30 of file catalog.h.

Member Function Documentation

CreateTable()

void CatalogManager::CreateTable	(	const std::string &	table_name,
		Attribute &	attr
	)

Create a Table object.

Parameters

table_name	表的名字
attr	屬性
index	索引
primary	Primary Key的位置

Definition at line 113 of file Catalog_Manager.cpp.

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DropIndex()

void CatalogManager::DropIndex	(	const std::string &	table_name,
		const std::string &	index_name
	)

Delete an index file.

Parameters

table_name	通过table_name查找該表
index_name	通过index_name來刪除index

Definition at line 213 of file Catalog_Manager.cpp.

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DropTable()

void CatalogManager::DropTable

(

const std::string &

table_name

)

Delete a table.

Parameters

table_name

通过表的名字來刪除表格

Definition at line 164 of file Catalog_Manager.cpp.

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existAttribute()

bool CatalogManager::existAttribute	(	const std::string &	table_name,
		const std::string &	attr_name
	)

Judge if an attribute in of a table exists.

Parameters

table_name	Name of table
attr_name	The attribute name

Returns

true attribute exists

false attribute doesn't exist

Definition at line 70 of file Catalog_Manager.cpp.

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existTable()

bool CatalogManager::existTable

(

const std::string &

table_name

)

Judge if the table exists.

Parameters

table_name

通过表的名字來判斷表是否存在

Returns

true table exists

false table doesn't exist

Definition at line 65 of file Catalog_Manager.cpp.

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getAttribute()

Attribute CatalogManager::getAttribute

(

const std::string &

table_name

)

Get the Attribute from table name.

Parameters

table_name

通过表的名字來獲取屬性

Returns

Attribute

Definition at line 285 of file Catalog_Manager.cpp.

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getIndex()

Index CatalogManager::getIndex

(

const std::string &

table_name

)

Get the Index object from table name.

Parameters

table_name

Returns

Index

Definition at line 240 of file Catalog_Manager.cpp.

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Index2Attr()

std::string CatalogManager::Index2Attr	(	const std::string &	table_name,
		const std::string &	attr_name,
		const std::string &	index_name
	)

Parameters

table_name	通过table_name來獲取當前的table
attr_name	通过attr_name來獲取當前的attribute
index_name	通过index_name來獲取attribute

Returns

std::string

Definition at line 353 of file Catalog_Manager.cpp.

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ShowTable()

void CatalogManager::ShowTable

(

const std::string &

table_name

)

Parameters

table_name

通过table_name來獲取當前表格的信息

Definition at line 372 of file Catalog_Manager.cpp.

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UpdateIndex()

void CatalogManager::UpdateIndex	(	const std::string &	table_name,
		const std::string &	attr_name,
		const std::string &	index_name
	)

Update Index.

Parameters

table_name	通过table_name來找對應的table
attr_name	通过attr_name來找對應的attribute
index_name	通过index_name來防止命名重複

Definition at line 172 of file Catalog_Manager.cpp.

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The documentation for this class was generated from the following files:

• src/include/catalog/catalog.h
• src/catalog/Catalog_Manager.cpp