org.dspace.core

Class AbstractHibernateDSODAO<T extends DSpaceObject>

java.lang.Object

org.dspace.core.AbstractHibernateDAO<T>

org.dspace.core.AbstractHibernateDSODAO<T>

Type Parameters:

T - class type

All Implemented Interfaces:

GenericDAO<T>

Direct Known Subclasses:

BitstreamDAOImpl, BundleDAOImpl, CollectionDAOImpl, CommunityDAOImpl, EPersonDAOImpl, GroupDAOImpl, ItemDAOImpl

public abstract class AbstractHibernateDSODAO<T extends DSpaceObject>
extends AbstractHibernateDAO<T>

Hibernate implementation used by DSO Database Access Objects , includes commonly used methods Each DSO Database Access Objects should extend this class to prevent code duplication.

Author:

kevinvandevelde at atmire.com

Constructor Summary

Constructors

Constructor and Description
AbstractHibernateDSODAO()

Method Summary

Methods

Modifier and Type	Method and Description
protected void	addMetadataLeftJoin(StringBuilder query, String tableIdentifier, Collection<MetadataField> metadataFields) Add left outer join on all metadata fields which are passed to this function.
protected void	addMetadataSortQuery(StringBuilder query, List<MetadataField> metadataSortFields, List<String> columnSortFields)
protected void	addMetadataValueWhereQuery(StringBuilder query, List<MetadataField> metadataFields, String operator, String additionalWhere) Using the metadata tables mapped in the leftJoin, this function creates a where query which can check the values Values can be checked using a like or an "=" query, this is determined by the "operator" parameter When creating a query, the "queryParam" string can be used set as parameter for the query.
T	findByLegacyId(Context context, int legacyId, Class<T> clazz)

Methods inherited from class org.dspace.core.AbstractHibernateDAO

count, count, countLong, create, createCriteria, createCriteria, createQuery, delete, findAll, findByID, findByID, findMany, findMany, findUnique, getHibernateSession, iterate, list, list, save, singleResult, singleResult, uniqueResult, uniqueResult

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractHibernateDSODAO

public AbstractHibernateDSODAO()

Method Detail

findByLegacyId

public T findByLegacyId(Context context,
               int legacyId,
               Class<T> clazz)
                                      throws SQLException

Throws:

SQLException

addMetadataLeftJoin

protected void addMetadataLeftJoin(StringBuilder query,
                       String tableIdentifier,
                       Collection<MetadataField> metadataFields)

Add left outer join on all metadata fields which are passed to this function. The identifier of the join will be the toString() representation of the metadata field. The joineded metadata fields can then be used to query or sort.

Parameters:

query -

tableIdentifier -

metadataFields -

addMetadataValueWhereQuery

protected void addMetadataValueWhereQuery(StringBuilder query,
                              List<MetadataField> metadataFields,
                              String operator,
                              String additionalWhere)

Using the metadata tables mapped in the leftJoin, this function creates a where query which can check the values Values can be checked using a like or an "=" query, this is determined by the "operator" parameter When creating a query, the "queryParam" string can be used set as parameter for the query.

Parameters:

query - the already existing query builder, all changes will be appended

metadataFields - the metadatafields who's metadata value should be queried

operator - can either be "=" or "like"

additionalWhere - additional where query

addMetadataSortQuery

protected void addMetadataSortQuery(StringBuilder query,
                        List<MetadataField> metadataSortFields,
                        List<String> columnSortFields)