All Downloads are FREE. Search and download functionalities are using the official Maven repository.
Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance.
Project price only 1 $
You can buy this project and download/modify it how often you want.
org.hibernate.envers.query.internal.impl.RevisionsOfEntityQuery Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
* See the lgpl.txt file in the root directory or .
*/
package org.hibernate.envers.query.internal.impl;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import javax.persistence.criteria.JoinType;
import org.hibernate.envers.RevisionType;
import org.hibernate.envers.boot.internal.EnversService;
import org.hibernate.envers.configuration.internal.AuditEntitiesConfiguration;
import org.hibernate.envers.exception.AuditException;
import org.hibernate.envers.internal.entities.mapper.relation.query.QueryConstants;
import org.hibernate.envers.internal.reader.AuditReaderImplementor;
import org.hibernate.envers.query.AuditAssociationQuery;
import org.hibernate.envers.query.AuditQuery;
import org.hibernate.envers.query.criteria.AuditCriterion;
import org.hibernate.proxy.HibernateProxy;
/**
* @author Adam Warski (adam at warski dot org)
* @author HernпїЅn Chanfreau
*/
public class RevisionsOfEntityQuery extends AbstractAuditQuery {
private final boolean selectEntitiesOnly;
private final boolean selectDeletedEntities;
public RevisionsOfEntityQuery(
EnversService enversService,
AuditReaderImplementor versionsReader,
Class cls,
boolean selectEntitiesOnly,
boolean selectDeletedEntities) {
super( enversService, versionsReader, cls );
this.selectEntitiesOnly = selectEntitiesOnly;
this.selectDeletedEntities = selectDeletedEntities;
}
public RevisionsOfEntityQuery(
EnversService enversService,
AuditReaderImplementor versionsReader,
Class cls, String entityName,
boolean selectEntitiesOnly,
boolean selectDeletedEntities) {
super( enversService, versionsReader, cls, entityName );
this.selectEntitiesOnly = selectEntitiesOnly;
this.selectDeletedEntities = selectDeletedEntities;
}
private Number getRevisionNumber(Map versionsEntity) {
AuditEntitiesConfiguration verEntCfg = enversService.getAuditEntitiesConfiguration();
String originalId = verEntCfg.getOriginalIdPropName();
String revisionPropertyName = verEntCfg.getRevisionFieldName();
Object revisionInfoObject = ( (Map) versionsEntity.get( originalId ) ).get( revisionPropertyName );
if ( revisionInfoObject instanceof HibernateProxy ) {
return (Number) ( (HibernateProxy) revisionInfoObject ).getHibernateLazyInitializer().getIdentifier();
}
else {
// Not a proxy - must be read from cache or with a join
return enversService.getRevisionInfoNumberReader().getRevisionNumber( revisionInfoObject );
}
}
@SuppressWarnings({"unchecked"})
public List list() throws AuditException {
AuditEntitiesConfiguration verEntCfg = enversService.getAuditEntitiesConfiguration();
/*
The query that should be executed in the versions table:
SELECT e (unless another projection is specified) FROM ent_ver e, rev_entity r WHERE
e.revision_type != DEL (if selectDeletedEntities == false) AND
e.revision = r.revision AND
(all specified conditions, transformed, on the "e" entity)
ORDER BY e.revision ASC (unless another order or projection is specified)
*/
if ( !selectDeletedEntities ) {
// e.revision_type != DEL AND
qb.getRootParameters().addWhereWithParam( verEntCfg.getRevisionTypePropName(), "<>", RevisionType.DEL );
}
// all specified conditions, transformed
for ( AuditCriterion criterion : criterions ) {
criterion.addToQuery(
enversService,
versionsReader,
aliasToEntityNameMap,
QueryConstants.REFERENCED_ENTITY_ALIAS,
qb,
qb.getRootParameters()
);
}
if ( !hasProjection() && !hasOrder ) {
String revisionPropertyPath = verEntCfg.getRevisionNumberPath();
qb.addOrder( QueryConstants.REFERENCED_ENTITY_ALIAS, revisionPropertyPath, true );
}
if ( !selectEntitiesOnly ) {
qb.addFrom( enversService.getAuditEntitiesConfiguration().getRevisionInfoEntityName(), "r", true );
qb.getRootParameters().addWhere(
enversService.getAuditEntitiesConfiguration().getRevisionNumberPath(),
true,
"=",
"r.id",
false
);
}
List queryResult = buildAndExecuteQuery();
if ( hasProjection() ) {
return queryResult;
}
else {
List entities = new ArrayList();
String revisionTypePropertyName = verEntCfg.getRevisionTypePropName();
for ( Object resultRow : queryResult ) {
Map versionsEntity;
Object revisionData;
if ( selectEntitiesOnly ) {
versionsEntity = (Map) resultRow;
revisionData = null;
}
else {
Object[] arrayResultRow = (Object[]) resultRow;
versionsEntity = (Map) arrayResultRow[0];
revisionData = arrayResultRow[1];
}
Number revision = getRevisionNumber( versionsEntity );
Object entity = entityInstantiator.createInstanceFromVersionsEntity(
entityName,
versionsEntity,
revision
);
if ( !selectEntitiesOnly ) {
entities.add( new Object[] {entity, revisionData, versionsEntity.get( revisionTypePropertyName )} );
}
else {
entities.add( entity );
}
}
return entities;
}
}
@Override
public AuditAssociationQuery traverseRelation(String associationName, JoinType joinType) {
throw new UnsupportedOperationException( "Not yet implemented for revisions of entity queries" );
}
}
