/*
* Copyright 2015 herd contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.finra.herd.dao.impl;
import java.util.ArrayList;
import java.util.List;
import javax.persistence.Tuple;
import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.From;
import javax.persistence.criteria.Join;
import javax.persistence.criteria.Order;
import javax.persistence.criteria.Predicate;
import javax.persistence.criteria.Root;
import javax.persistence.criteria.Subquery;
import javax.persistence.metamodel.SingularAttribute;
import org.springframework.stereotype.Repository;
import org.finra.herd.dao.StorageUnitDao;
import org.finra.herd.model.api.xml.BusinessObjectFormatKey;
import org.finra.herd.model.jpa.BusinessObjectDataEntity;
import org.finra.herd.model.jpa.BusinessObjectDataEntity_;
import org.finra.herd.model.jpa.BusinessObjectDataStatusEntity;
import org.finra.herd.model.jpa.BusinessObjectDefinitionEntity;
import org.finra.herd.model.jpa.BusinessObjectFormatEntity;
import org.finra.herd.model.jpa.BusinessObjectFormatEntity_;
import org.finra.herd.model.jpa.FileTypeEntity;
import org.finra.herd.model.jpa.StorageEntity;
import org.finra.herd.model.jpa.StorageEntity_;
import org.finra.herd.model.jpa.StoragePlatformEntity;
import org.finra.herd.model.jpa.StoragePlatformEntity_;
import org.finra.herd.model.jpa.StorageUnitEntity;
import org.finra.herd.model.jpa.StorageUnitEntity_;
import org.finra.herd.model.jpa.StorageUnitStatusEntity;
import org.finra.herd.model.jpa.StorageUnitStatusEntity_;
@Repository
public class StorageUnitDaoImpl extends AbstractHerdDao implements StorageUnitDao
{
@Override
public List<StorageUnitEntity> getS3StorageUnitsToRestore(int maxResult)
{
// Create the criteria builder and the criteria.
CriteriaBuilder builder = entityManager.getCriteriaBuilder();
CriteriaQuery<StorageUnitEntity> criteria = builder.createQuery(StorageUnitEntity.class);
// The criteria root is the storage unit.
Root<StorageUnitEntity> storageUnitEntityRoot = criteria.from(StorageUnitEntity.class);
// Join to the other tables we can filter on.
Join<StorageUnitEntity, StorageEntity> storageEntityJoin = storageUnitEntityRoot.join(StorageUnitEntity_.storage);
Join<StorageEntity, StoragePlatformEntity> storagePlatformEntityJoin = storageEntityJoin.join(StorageEntity_.storagePlatform);
Join<StorageUnitEntity, StorageUnitStatusEntity> storageUnitStatusEntityJoin = storageUnitEntityRoot.join(StorageUnitEntity_.status);
// Create the standard restrictions (i.e. the standard where clauses).
List<Predicate> predicates = new ArrayList<>();
predicates.add(builder.equal(storagePlatformEntityJoin.get(StoragePlatformEntity_.name), StoragePlatformEntity.S3));
predicates.add(builder.equal(storageUnitStatusEntityJoin.get(StorageUnitStatusEntity_.code), StorageUnitStatusEntity.RESTORING));
// Order the results by storage unit updated on timestamp.
Order orderBy = builder.asc(storageUnitEntityRoot.get(StorageUnitEntity_.updatedOn));
// Add the clauses for the query.
criteria.select(storageUnitEntityRoot).where(builder.and(predicates.toArray(new Predicate[predicates.size()]))).orderBy(orderBy);
// Execute the query and return the results.
return entityManager.createQuery(criteria).setMaxResults(maxResult).getResultList();
}
@Override
public StorageUnitEntity getStorageUnitByBusinessObjectDataAndStorage(BusinessObjectDataEntity businessObjectDataEntity, StorageEntity storageEntity)
{
// Create the criteria builder and the criteria.
CriteriaBuilder builder = entityManager.getCriteriaBuilder();
CriteriaQuery<StorageUnitEntity> criteria = builder.createQuery(StorageUnitEntity.class);
// The criteria root is the storage unit.
Root<StorageUnitEntity> storageUnitEntityRoot = criteria.from(StorageUnitEntity.class);
// Create the standard restrictions (i.e. the standard where clauses).
List<Predicate> predicates = new ArrayList<>();
predicates.add(builder.equal(storageUnitEntityRoot.get(StorageUnitEntity_.businessObjectData), businessObjectDataEntity));
predicates.add(builder.equal(storageUnitEntityRoot.get(StorageUnitEntity_.storage), storageEntity));
// Add the clauses for the query.
criteria.select(storageUnitEntityRoot).where(builder.and(predicates.toArray(new Predicate[predicates.size()])));
// Execute the query.
List<StorageUnitEntity> resultList = entityManager.createQuery(criteria).getResultList();
// Return single result or null.
return resultList.size() >= 1 ? resultList.get(0) : null;
}
@Override
public StorageUnitEntity getStorageUnitByBusinessObjectDataAndStorageName(BusinessObjectDataEntity businessObjectDataEntity, String storageName)
{
CriteriaBuilder builder = entityManager.getCriteriaBuilder();
CriteriaQuery<StorageUnitEntity> criteria = builder.createQuery(StorageUnitEntity.class);
Root<StorageUnitEntity> storageUnitEntity = criteria.from(StorageUnitEntity.class);
// join storage unit to storage to retrieve name
Join<StorageUnitEntity, StorageEntity> storageEntity = storageUnitEntity.join(StorageUnitEntity_.storage);
// where business object data equals
Predicate businessObjectDataRestriction = builder.equal(storageUnitEntity.get(StorageUnitEntity_.businessObjectData), businessObjectDataEntity);
// where storage name equals, ignoring case
Predicate storageNameRestriction = builder.equal(builder.upper(storageEntity.get(StorageEntity_.name)), storageName.toUpperCase());
criteria.select(storageUnitEntity).where(builder.and(businessObjectDataRestriction, storageNameRestriction));
List<StorageUnitEntity> resultList = entityManager.createQuery(criteria).getResultList();
// return single result or null
return resultList.size() >= 1 ? resultList.get(0) : null;
}
@Override
public StorageUnitEntity getStorageUnitByStorageNameAndDirectoryPath(String storageName, String directoryPath)
{
// Create the criteria builder and the criteria.
CriteriaBuilder builder = entityManager.getCriteriaBuilder();
CriteriaQuery<StorageUnitEntity> criteria = builder.createQuery(StorageUnitEntity.class);
// The criteria root is the storage units.
Root<StorageUnitEntity> storageUnitEntity = criteria.from(StorageUnitEntity.class);
// Join to the other tables we can filter on.
Join<StorageUnitEntity, StorageEntity> storageEntity = storageUnitEntity.join(StorageUnitEntity_.storage);
// Create the standard restrictions (i.e. the standard where clauses).
Predicate storageNameRestriction = builder.equal(builder.upper(storageEntity.get(StorageEntity_.name)), storageName.toUpperCase());
Predicate directoryPathRestriction = builder.equal(storageUnitEntity.get(StorageUnitEntity_.directoryPath), directoryPath);
criteria.select(storageUnitEntity).where(builder.and(storageNameRestriction, directoryPathRestriction));
List<StorageUnitEntity> resultList = entityManager.createQuery(criteria).getResultList();
// Return the first found storage unit or null if none were found.
return resultList.size() >= 1 ? resultList.get(0) : null;
}
@Override
public List<StorageUnitEntity> getStorageUnitsByPartitionFiltersAndStorages(BusinessObjectFormatKey businessObjectFormatKey,
List<List<String>> partitionFilters, Integer businessObjectDataVersion, String businessObjectDataStatus, List<String> storageNames,
String storagePlatformType, String excludedStoragePlatformType, boolean selectOnlyAvailableStorageUnits)
{
List<StorageUnitEntity> resultStorageUnitEntities = new ArrayList<>();
// Loop through each chunk of partition filters until we have reached the end of the list.
for (int i = 0; i < partitionFilters.size(); i += MAX_PARTITION_FILTERS_PER_REQUEST)
{
// Get a sub-list for the current chunk of partition filters.
List<StorageUnitEntity> storageUnitEntitiesSubset =
getStorageUnitsByPartitionFiltersAndStorages(businessObjectFormatKey, partitionFilters, businessObjectDataVersion, businessObjectDataStatus,
storageNames, storagePlatformType, excludedStoragePlatformType, selectOnlyAvailableStorageUnits, i,
(i + MAX_PARTITION_FILTERS_PER_REQUEST) > partitionFilters.size() ? partitionFilters.size() - i : MAX_PARTITION_FILTERS_PER_REQUEST);
// Add the sub-list to the result.
resultStorageUnitEntities.addAll(storageUnitEntitiesSubset);
}
return resultStorageUnitEntities;
}
@Override
public List<StorageUnitEntity> getStorageUnitsByStorageAndBusinessObjectData(StorageEntity storageEntity,
List<BusinessObjectDataEntity> businessObjectDataEntities)
{
// Create the criteria builder and the criteria.
CriteriaBuilder builder = entityManager.getCriteriaBuilder();
CriteriaQuery<StorageUnitEntity> criteria = builder.createQuery(StorageUnitEntity.class);
// The criteria root is the storage unit.
Root<StorageUnitEntity> storageUnitEntity = criteria.from(StorageUnitEntity.class);
// Create the standard restrictions (i.e. the standard where clauses).
Predicate queryRestriction = builder.equal(storageUnitEntity.get(StorageUnitEntity_.storage), storageEntity);
queryRestriction = builder
.and(queryRestriction, getPredicateForInClause(builder, storageUnitEntity.get(StorageUnitEntity_.businessObjectData), businessObjectDataEntities));
// Add the clauses for the query.
criteria.select(storageUnitEntity).where(queryRestriction);
// Execute the query and return the results.
return entityManager.createQuery(criteria).getResultList();
}
@Override
public List<StorageUnitEntity> getStorageUnitsByStoragePlatformAndBusinessObjectData(String storagePlatform,
BusinessObjectDataEntity businessObjectDataEntity)
{
// Create the criteria builder and the criteria.
CriteriaBuilder builder = entityManager.getCriteriaBuilder();
CriteriaQuery<StorageUnitEntity> criteria = builder.createQuery(StorageUnitEntity.class);
// The criteria root is the storage unit.
Root<StorageUnitEntity> storageUnitEntity = criteria.from(StorageUnitEntity.class);
// Join to the other tables we can filter on.
Join<StorageUnitEntity, StorageEntity> storageEntity = storageUnitEntity.join(StorageUnitEntity_.storage);
Join<StorageEntity, StoragePlatformEntity> storagePlatformEntity = storageEntity.join(StorageEntity_.storagePlatform);
// Create the standard restrictions (i.e. the standard where clauses).
List<Predicate> predicates = new ArrayList<>();
predicates.add(builder.equal(builder.upper(storagePlatformEntity.get(StoragePlatformEntity_.name)), storagePlatform.toUpperCase()));
predicates.add(builder.equal(storageUnitEntity.get(StorageUnitEntity_.businessObjectData), businessObjectDataEntity));
// Order by storage name.
Order orderBy = builder.asc(storageEntity.get(StorageEntity_.name));
// Add the clauses for the query.
criteria.select(storageUnitEntity).where(builder.and(predicates.toArray(new Predicate[predicates.size()]))).orderBy(orderBy);
// Execute the query and return the results.
return entityManager.createQuery(criteria).getResultList();
}
/**
* Builds a sub-query to select the maximum business object data version.
*
* @param builder the criteria builder
* @param criteria the criteria query
* @param businessObjectDefinitionEntity the business object definition entity that appears in the from clause of the main query
* @param businessObjectFormatEntity the business object format entity that appears in the from clause of the main query
* @param fileTypeEntity the file type entity that appears in the from clause of the main query
* @param businessObjectDataEntity the business object data entity that appears in the from clause of the main query
* @param businessObjectDataVersion the business object data version. If a business object data version isn't specified, the latest data version based on
* the specified business object data status is returned
* @param businessObjectDataStatus the business object data status. This parameter is ignored when the business object data version is specified. When
* business object data version and business object data status both are not specified, the latest data version for each set of partition values will be
* used regardless of the status
* @param storageNames the list of storage names where the business object data storage units should be looked for (case-insensitive)
* @param storagePlatformType the optional storage platform type, e.g. S3 for Hive DDL. It is ignored when the list of storages is not empty
* @param excludedStoragePlatformType the optional storage platform type to be excluded from search. It is ignored when the list of storages is not empty or
* the storage platform type is specified
* @param selectOnlyAvailableStorageUnits specifies if only available storage units will be selected or any storage units regardless of their status
*
* @return the sub-query to select the maximum business object data version
*/
private Subquery<Integer> getMaximumBusinessObjectFormatVersionSubQuery(CriteriaBuilder builder, CriteriaQuery<?> criteria,
From<?, BusinessObjectDefinitionEntity> businessObjectDefinitionEntity, From<?, BusinessObjectFormatEntity> businessObjectFormatEntity,
From<?, FileTypeEntity> fileTypeEntity, From<?, BusinessObjectDataEntity> businessObjectDataEntity, Integer businessObjectDataVersion,
String businessObjectDataStatus, List<String> storageNames, String storagePlatformType, String excludedStoragePlatformType,
boolean selectOnlyAvailableStorageUnits)
{
// Business object format version is not specified, so just use the latest available for this set of partition values.
Subquery<Integer> subQuery = criteria.subquery(Integer.class);
// The criteria root is the business object data.
Root<BusinessObjectDataEntity> subBusinessObjectDataEntity = subQuery.from(BusinessObjectDataEntity.class);
// Join to the other tables we can filter on.
Join<BusinessObjectDataEntity, StorageUnitEntity> subStorageUnitEntity = subBusinessObjectDataEntity.join(BusinessObjectDataEntity_.storageUnits);
Join<StorageUnitEntity, StorageEntity> subStorageEntity = subStorageUnitEntity.join(StorageUnitEntity_.storage);
Join<StorageEntity, StoragePlatformEntity> subStoragePlatformEntity = subStorageEntity.join(StorageEntity_.storagePlatform);
Join<BusinessObjectDataEntity, BusinessObjectFormatEntity> subBusinessObjectFormatEntity =
subBusinessObjectDataEntity.join(BusinessObjectDataEntity_.businessObjectFormat);
Join<BusinessObjectFormatEntity, BusinessObjectDefinitionEntity> subBusinessObjectDefinitionEntity =
subBusinessObjectFormatEntity.join(BusinessObjectFormatEntity_.businessObjectDefinition);
Join<BusinessObjectFormatEntity, FileTypeEntity> subBusinessObjectFormatFileTypeEntity =
subBusinessObjectFormatEntity.join(BusinessObjectFormatEntity_.fileType);
Join<BusinessObjectDataEntity, BusinessObjectDataStatusEntity> subBusinessObjectDataStatusEntity =
subBusinessObjectDataEntity.join(BusinessObjectDataEntity_.status);
Join<StorageUnitEntity, StorageUnitStatusEntity> subStorageUnitStatusEntity = subStorageUnitEntity.join(StorageUnitEntity_.status);
// Create the standard restrictions (i.e. the standard where clauses).
Predicate subQueryRestriction = builder.equal(subBusinessObjectDefinitionEntity, businessObjectDefinitionEntity);
subQueryRestriction = builder.and(subQueryRestriction, builder
.equal(subBusinessObjectFormatEntity.get(BusinessObjectFormatEntity_.usage), businessObjectFormatEntity.get(BusinessObjectFormatEntity_.usage)));
subQueryRestriction = builder.and(subQueryRestriction, builder.equal(subBusinessObjectFormatFileTypeEntity, fileTypeEntity));
// Create and add standard restrictions on primary and sub-partition values.
subQueryRestriction =
builder.and(subQueryRestriction, getQueryRestrictionOnPartitionValues(builder, subBusinessObjectDataEntity, businessObjectDataEntity));
// Add restrictions on business object data version and business object data status.
Predicate subQueryRestrictionOnBusinessObjectDataVersionAndStatus =
getQueryRestrictionOnBusinessObjectDataVersionAndStatus(builder, subBusinessObjectDataEntity, subBusinessObjectDataStatusEntity,
businessObjectDataVersion, businessObjectDataStatus);
if (subQueryRestrictionOnBusinessObjectDataVersionAndStatus != null)
{
subQueryRestriction = builder.and(subQueryRestriction, subQueryRestrictionOnBusinessObjectDataVersionAndStatus);
}
// Create and add a standard restriction on storage.
subQueryRestriction = builder.and(subQueryRestriction,
getQueryRestrictionOnStorage(builder, subStorageEntity, subStoragePlatformEntity, storageNames, storagePlatformType, excludedStoragePlatformType));
// If specified, add a restriction on storage unit status availability flag.
if (selectOnlyAvailableStorageUnits)
{
subQueryRestriction = builder.and(subQueryRestriction, builder.isTrue(subStorageUnitStatusEntity.get(StorageUnitStatusEntity_.available)));
}
// Add all of the clauses to the subquery.
subQuery.select(builder.max(subBusinessObjectFormatEntity.get(BusinessObjectFormatEntity_.businessObjectFormatVersion))).where(subQueryRestriction);
return subQuery;
}
/**
* Retrieves a list of storage unit entities per specified parameters. This method processes a sublist of partition filters specified by
* partitionFilterSubListFromIndex and partitionFilterSubListSize parameters.
*
* @param businessObjectFormatKey the business object format key (case-insensitive). If a business object format version isn't specified, the latest
* available format version for each partition value will be used
* @param partitionFilters the list of partition filter to be used to select business object data instances. Each partition filter contains a list of
* primary and sub-partition values in the right order up to the maximum partition levels allowed by business object data registration - with partition
* values for the relative partitions not to be used for selection passed as nulls
* @param businessObjectDataVersion the business object data version. If a business object data version isn't specified, the latest data version based on
* the specified business object data status is returned
* @param businessObjectDataStatus the business object data status. This parameter is ignored when the business object data version is specified. When
* business object data version and business object data status both are not specified, the latest data version for each set of partition values will be
* used regardless of the status
* @param storageNames the list of storage names where the business object data storage units should be looked for (case-insensitive)
* @param storagePlatformType the optional storage platform type, e.g. S3 for Hive DDL. It is ignored when the list of storages is not empty
* @param excludedStoragePlatformType the optional storage platform type to be excluded from search. It is ignored when the list of storages is not empty or
* the storage platform type is specified
* @param partitionFilterSubListFromIndex the index of the first element in the partition filter sublist
* @param partitionFilterSubListSize the size of the partition filter sublist
* @param selectOnlyAvailableStorageUnits specifies if only available storage units will be selected or any storage units regardless of their status
*
* @return the list of storage unit entities sorted by partition values
*/
private List<StorageUnitEntity> getStorageUnitsByPartitionFiltersAndStorages(BusinessObjectFormatKey businessObjectFormatKey,
List<List<String>> partitionFilters, Integer businessObjectDataVersion, String businessObjectDataStatus, List<String> storageNames,
String storagePlatformType, String excludedStoragePlatformType, boolean selectOnlyAvailableStorageUnits, int partitionFilterSubListFromIndex,
int partitionFilterSubListSize)
{
// Create the criteria builder and the criteria.
CriteriaBuilder builder = entityManager.getCriteriaBuilder();
CriteriaQuery<Tuple> criteria = builder.createTupleQuery();
// The criteria root is the storage unit.
Root<StorageUnitEntity> storageUnitEntity = criteria.from(StorageUnitEntity.class);
// Join to the other tables we can filter on.
Join<StorageUnitEntity, BusinessObjectDataEntity> businessObjectDataEntity = storageUnitEntity.join(StorageUnitEntity_.businessObjectData);
Join<StorageUnitEntity, StorageEntity> storageEntity = storageUnitEntity.join(StorageUnitEntity_.storage);
Join<StorageEntity, StoragePlatformEntity> storagePlatformEntity = storageEntity.join(StorageEntity_.storagePlatform);
Join<BusinessObjectDataEntity, BusinessObjectFormatEntity> businessObjectFormatEntity =
businessObjectDataEntity.join(BusinessObjectDataEntity_.businessObjectFormat);
Join<BusinessObjectFormatEntity, FileTypeEntity> fileTypeEntity = businessObjectFormatEntity.join(BusinessObjectFormatEntity_.fileType);
Join<BusinessObjectFormatEntity, BusinessObjectDefinitionEntity> businessObjectDefinitionEntity =
businessObjectFormatEntity.join(BusinessObjectFormatEntity_.businessObjectDefinition);
Join<StorageUnitEntity, StorageUnitStatusEntity> storageUnitStatusEntity = storageUnitEntity.join(StorageUnitEntity_.status);
// Create the standard restrictions (i.e. the standard where clauses).
// Create a standard restriction based on the business object format key values.
// Please note that we specify not to ignore the business object format version.
Predicate mainQueryRestriction =
getQueryRestriction(builder, businessObjectFormatEntity, fileTypeEntity, businessObjectDefinitionEntity, businessObjectFormatKey, false);
// If a format version was not specified, use the latest available for this set of partition values.
if (businessObjectFormatKey.getBusinessObjectFormatVersion() == null)
{
// Get the latest available format version for this set of partition values and per other restrictions.
Subquery<Integer> subQuery =
getMaximumBusinessObjectFormatVersionSubQuery(builder, criteria, businessObjectDefinitionEntity, businessObjectFormatEntity, fileTypeEntity,
businessObjectDataEntity, businessObjectDataVersion, businessObjectDataStatus, storageNames, storagePlatformType,
excludedStoragePlatformType, selectOnlyAvailableStorageUnits);
mainQueryRestriction = builder
.and(mainQueryRestriction, builder.in(businessObjectFormatEntity.get(BusinessObjectFormatEntity_.businessObjectFormatVersion)).value(subQuery));
}
// Add restriction as per specified primary and/or sub-partition values.
mainQueryRestriction = builder.and(mainQueryRestriction, getQueryRestrictionOnPartitionValues(builder, businessObjectDataEntity,
partitionFilters.subList(partitionFilterSubListFromIndex, partitionFilterSubListFromIndex + partitionFilterSubListSize)));
// If a data version was specified, use it. Otherwise, use the latest one as per specified business object data status.
if (businessObjectDataVersion != null)
{
mainQueryRestriction =
builder.and(mainQueryRestriction, builder.equal(businessObjectDataEntity.get(BusinessObjectDataEntity_.version), businessObjectDataVersion));
}
else
{
// Business object data version is not specified, so get the latest one as per specified business object data status, if any.
// Meaning, when both business object data version and business object data status are not specified, we just return
// the latest business object data version in the specified storage.
Subquery<Integer> subQuery =
getMaximumBusinessObjectDataVersionSubQuery(builder, criteria, businessObjectDataEntity, businessObjectFormatEntity, businessObjectDataStatus,
storageNames, storagePlatformType, excludedStoragePlatformType, selectOnlyAvailableStorageUnits);
mainQueryRestriction =
builder.and(mainQueryRestriction, builder.in(businessObjectDataEntity.get(BusinessObjectDataEntity_.version)).value(subQuery));
}
// If specified, add restriction on storage.
mainQueryRestriction = builder.and(mainQueryRestriction,
getQueryRestrictionOnStorage(builder, storageEntity, storagePlatformEntity, storageNames, storagePlatformType, excludedStoragePlatformType));
// If specified, add a restriction on storage unit status availability flag.
if (selectOnlyAvailableStorageUnits)
{
mainQueryRestriction = builder.and(mainQueryRestriction, builder.isTrue(storageUnitStatusEntity.get(StorageUnitStatusEntity_.available)));
}
// Order by partitions and storage names.
List<Order> orderBy = new ArrayList<>();
for (SingularAttribute<BusinessObjectDataEntity, String> businessObjectDataPartition : BUSINESS_OBJECT_DATA_PARTITIONS)
{
orderBy.add(builder.asc(businessObjectDataEntity.get(businessObjectDataPartition)));
}
orderBy.add(builder.asc(storageEntity.get(StorageEntity_.name)));
// Add the clauses for the query.
// Please note that we use multiselect here in order to eliminate the Hibernate N+1 SELECT's problem,
// happening when we select storage unit entities and access their relative business object data entities.
// This is an alternative approach, since adding @Fetch(FetchMode.JOIN) failed to address the issue.
criteria
.multiselect(storageUnitEntity, storageUnitStatusEntity, storageEntity, storagePlatformEntity, businessObjectDataEntity, businessObjectFormatEntity)
.where(mainQueryRestriction).orderBy(orderBy);
// Run the query to get a list of tuples back.
List<Tuple> tuples = entityManager.createQuery(criteria).getResultList();
// Build a list of storage unit entities to return.
List<StorageUnitEntity> storageUnitEntities = new ArrayList<>();
for (Tuple tuple : tuples)
{
storageUnitEntities.add(tuple.get(storageUnitEntity));
}
return storageUnitEntities;
}
}