Exec_Engine Class Reference

Execute commands from the interface. More...

#include <exec_engine.h>

Public Member Functions
void	createTable (std::string &table_name, Attribute &attr)
	Create a Table. More...
void	dropTable (std::string &table_name)
	Delete a Table. More...
void	selectRecord (std::string &table_name, std::vector< std::string > &attr_names, std::vector< Where > &wheres, std::vector< MemoryTuple > &result)
	Select records by conditions. More...
void	insertRecord (std::string &table_name, MemoryTuple &row)
	Insert a piece of record. More...
void	createIndex (std::string &table_name, std::string &index_name, std::string &attr_name)
	Create Index on a table's attribute. More...
void	dropIndex (std::string &index_name)
	Delete the index of a certain index on a table. More...
void	deleteRecord (std::string &table_name, std::vector< Where > &data)
	Delete records by conditions. More...
void	updateRecord (std::string &table_name, std::vector< Where > &data)
	Update a record based on conditions. More...
Attribute	getTableAttributes (const std::string &table_name)
	Get the Table Attributes. More...
void	showTables ()
	display the information of all the tables More...

Detailed Description

Execute commands from the interface.

Definition at line 23 of file exec_engine.h.

Member Function Documentation

createIndex()

void Exec_Engine::createIndex	(	std::string &	table_name,
		std::string &	index_name,
		std::string &	attr_name
	)

Create Index on a table's attribute.

Parameters

table_name	[in] Name of table
index_name	[in] Name of index
attr_name	[in] Name of target attribute

Definition at line 14 of file exec_engine.cpp.

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createTable()

void Exec_Engine::createTable	(	std::string &	table_name,
		Attribute &	attr
	)

Create a Table.

Parameters

table_name	Name of table
attr	The attritbutes of the table

Definition at line 4 of file exec_engine.cpp.

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deleteRecord()

void Exec_Engine::deleteRecord	(	std::string &	table_name,
		std::vector< Where > &	data
	)

Delete records by conditions.

Parameters

table_name	[in] Name of table
data	[in] the condition

Definition at line 27 of file exec_engine.cpp.

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dropIndex()

void Exec_Engine::dropIndex

(

std::string &

index_name

)

Delete the index of a certain index on a table.

Parameters

index_name

[in] Name of index

Definition at line 20 of file exec_engine.cpp.

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dropTable()

void Exec_Engine::dropTable

(

std::string &

table_name

)

Delete a Table.

Parameters

table_name

[in] Name of table

Definition at line 9 of file exec_engine.cpp.

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getTableAttributes()

Attribute Exec_Engine::getTableAttributes

(

const std::string &

table_name

)

Get the Table Attributes.

Parameters

table_name

Name of table

Returns

Attribute The attribute object

Definition at line 51 of file exec_engine.cpp.

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insertRecord()

void Exec_Engine::insertRecord	(	std::string &	table_name,
		MemoryTuple &	row
	)

Insert a piece of record.

Parameters

table_name	[in] Name of table
row	[in] The iece of record to insert

Definition at line 55 of file exec_engine.cpp.

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selectRecord()

void Exec_Engine::selectRecord	(	std::string &	table_name,
		std::vector< std::string > &	attr_names,
		std::vector< Where > &	wheres,
		std::vector< MemoryTuple > &	result
	)

Select records by conditions.

Parameters

table_name	[in] Name of table
attr_names	[in] The attritbues to select
wheres	[in] conditions
result	[out] the result of selection

Definition at line 31 of file exec_engine.cpp.

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showTables()

void Exec_Engine::showTables ( )

inline

display the information of all the tables

Definition at line 104 of file exec_engine.h.

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updateRecord()

void Exec_Engine::updateRecord	(	std::string &	table_name,
		std::vector< Where > &	data
	)

Update a record based on conditions.

Parameters

table_name	Name of table
data	Condition

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

• src/include/API/exec_engine.h
• src/API/exec_engine.cpp