Package dk.netarkivet.harvester.datamodel.eav

Class EAV

java.lang.Object

dk.netarkivet.harvester.datamodel.eav.EAV

public class EAV
extends Object

EAV wrapper for the actual EAV implementation.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	EAV.AttributeAndType	Handy class to pair an attribute and its type.

Field Summary

Fields

Modifier and Type	Field	Description
protected static ClassLoader	classLoader	Classloader used to instantiate attribute type implementations.
protected com.antiaction.raptor.sql.DBWrapper	db	DB layer implementation.
static int	DOMAIN_TREE_ID	tree id for DomainConfiguration attributes and types.
protected static EAV	instance	Singleton instance.
static int	SNAPSHOT_TREE_ID	tree id for SparseFullHarvest attributes and types.

Constructor Summary

Constructors

Constructor	Description
EAV()

Method Summary

Modifier and Type	Method	Description
static int	compare(List<EAV.AttributeAndType> antList1, List<EAV.AttributeAndType> antList2)	Compare two lists containing attributes and their types.
static Set<String>	getAttributeNames(int tree_id)	Get list of attribute names for a specific tree_id
List<EAV.AttributeAndType>	getAttributesAndTypes(int tree_id, int entity_id)	Returns a list of attributes and their type for a given entity id and tree id.
List<com.antiaction.raptor.dao.AttributeTypeBase>	getAttributeTypes(int tree_id)	Returns a list of attribute types for the given tree id.
static EAV	getInstance()
void	insertAttribute(com.antiaction.raptor.dao.AttributeBase attribute)	Insert attribute into database.
void	saveAttribute(com.antiaction.raptor.dao.AttributeBase attribute)	Update existing attribute.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

SNAPSHOT_TREE_ID

public static final int SNAPSHOT_TREE_ID

tree id for SparseFullHarvest attributes and types.

See Also:

Constant Field Values

DOMAIN_TREE_ID

public static final int DOMAIN_TREE_ID

tree id for DomainConfiguration attributes and types.

See Also:

Constant Field Values

classLoader

protected static ClassLoader classLoader

Classloader used to instantiate attribute type implementations.

instance

protected static EAV instance

Singleton instance.

db

protected com.antiaction.raptor.sql.DBWrapper db

DB layer implementation. MSSQL is more like SQL92.

Constructor Detail

EAV

public EAV()

Method Detail

getInstance

public static EAV getInstance()

Returns:

an instance of this class.

insertAttribute

public void insertAttribute(com.antiaction.raptor.dao.AttributeBase attribute)

Insert attribute into database.

Parameters:

attribute - attribute to insert into database

saveAttribute

public void saveAttribute(com.antiaction.raptor.dao.AttributeBase attribute)

Update existing attribute.

Parameters:

attribute - attribute to update in database

getAttributeTypes

public List<com.antiaction.raptor.dao.AttributeTypeBase> getAttributeTypes(int tree_id)

Returns a list of attribute types for the given tree id.

Parameters:

tree_id - tree id to look for attribute types in

Returns:

a list of attribute types for the given tree id

getAttributesAndTypes

public List<EAV.AttributeAndType> getAttributesAndTypes(int tree_id,
                                                        int entity_id)
                                                 throws SQLException

Returns a list of attributes and their type for a given entity id and tree id.

Parameters:

tree_id - tree id to look in

entity_id - entity to look for

Returns:

a list of attributes and their type for a given entity id and tree id.

Throws:

SQLException - if an SQL exception occurs while querying the database

compare

public static int compare(List<EAV.AttributeAndType> antList1,
                          List<EAV.AttributeAndType> antList2)

Compare two lists containing attributes and their types.

Parameters:

antList1 -

antList2 -

Returns:

the result of comparing two lists containing attributes and their types

getAttributeNames

public static Set<String> getAttributeNames(int tree_id)

Get list of attribute names for a specific tree_id

Parameters:

tree_id - a given tree_id

Returns:

list of attribute names for a specific tree_id