cz.vutbr.fit.knot.annotations.app.PersistM Class Reference

Persistence manager (database manipulator) More...

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Public Member Functions
	PersistM ()
EntityManager	getEM ()
Object	getEntityById (String entityName, int id)
List	getEntitiesByName (String entityName)
List	queryDB (String queryName)
List	queryDB (String queryName, Object[] params)
boolean	persistEntity (Object entity)
boolean	persistEntities (ArrayList< Object > entity)
Object	saveEntityChanges (Object entity)
boolean	removeEntity (Object entity)
boolean	deleteTable (String tableName)

Private Attributes
EntityManagerFactory	entityManagerFactory

Detailed Description

Persistence manager (database manipulator)

Persistence manager (class for manipulating with database)

Author

idytrych

Definition at line 35 of file PersistM.java.

Constructor & Destructor Documentation

cz.vutbr.fit.knot.annotations.app.PersistM.PersistM

(

)

Constructor.

Definition at line 42 of file PersistM.java.

Member Function Documentation

boolean cz.vutbr.fit.knot.annotations.app.PersistM.deleteTable

(

String

tableName

)

Removes all entities from database table

Parameters

tableName

Name of table

Returns

In case of error returns true, false otherwise

Definition at line 291 of file PersistM.java.

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EntityManager cz.vutbr.fit.knot.annotations.app.PersistM.getEM

(

)

Gets entity manager.

Returns

entity manager

Definition at line 51 of file PersistM.java.

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List cz.vutbr.fit.knot.annotations.app.PersistM.getEntitiesByName

(

String

entityName

)

Gets list of entities with given name from the database

Parameters

entityName

Name of entities

Returns

If succeed, returns list of entities, else returns null

Definition at line 88 of file PersistM.java.

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Object cz.vutbr.fit.knot.annotations.app.PersistM.getEntityById	(	String	entityName,
		int	id
	)

Gets entity from the database

Parameters

entityName	Name of entity
id	Id of entity

Returns

If entity was found, returns requested entity, else returns null

Definition at line 62 of file PersistM.java.

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boolean cz.vutbr.fit.knot.annotations.app.PersistM.persistEntities

(

ArrayList< Object >

entity

)

Persist list of entities in to database

Parameters

entity

list of entities to be saved

Returns

In case of error returns true, false otherwise

Definition at line 189 of file PersistM.java.

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boolean cz.vutbr.fit.knot.annotations.app.PersistM.persistEntity

(

Object

entity

)

Persist entity in database

Parameters

entity

Entity to be saved

Returns

In case of error returns true, false otherwise

Definition at line 158 of file PersistM.java.

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List cz.vutbr.fit.knot.annotations.app.PersistM.queryDB

(

String

queryName

)

Query database with named query

Parameters

queryName

Name of query

Returns

If succeed, returns list of results, else returns null

Definition at line 110 of file PersistM.java.

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List cz.vutbr.fit.knot.annotations.app.PersistM.queryDB	(	String	queryName,
		Object[]	params
	)

Query database with named query with parameters

Parameters

queryName	Name of query
params	Array of parameters

Returns

If succeed, returns list of results, else returns null

Definition at line 133 of file PersistM.java.

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boolean cz.vutbr.fit.knot.annotations.app.PersistM.removeEntity

(

Object

entity

)

Removes entity from database

Parameters

entity

Entity to be removed

Returns

In case of error returns true, false otherwise

Definition at line 261 of file PersistM.java.

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Object cz.vutbr.fit.knot.annotations.app.PersistM.saveEntityChanges

(

Object

entity

)

Saves changes in entity to database

Parameters

entity

Entity to be saved

Returns

In case of failure returns null, saved entity otherwise

Definition at line 232 of file PersistM.java.

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Member Data Documentation

EntityManagerFactory cz.vutbr.fit.knot.annotations.app.PersistM.entityManagerFactory

private

Definition at line 37 of file PersistM.java.

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

• src/java/cz/vutbr/fit/knot/annotations/app/PersistM.java