org.hibernate.envers.query.criteria.SimpleAuditExpression Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2008, Red Hat Middleware LLC or third-party contributors as
* indicated by the @author tags or express copyright attribution
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* distributed under license by Red Hat Middleware LLC.
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* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
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package org.hibernate.envers.query.criteria;
import org.hibernate.envers.configuration.AuditConfiguration;
import org.hibernate.envers.entities.RelationDescription;
import org.hibernate.envers.exception.AuditException;
import org.hibernate.envers.query.property.PropertyNameGetter;
import org.hibernate.envers.reader.AuditReaderImplementor;
import org.hibernate.envers.tools.query.Parameters;
import org.hibernate.envers.tools.query.QueryBuilder;
/**
* @author Adam Warski (adam at warski dot org)
*/
public class SimpleAuditExpression implements AuditCriterion {
private PropertyNameGetter propertyNameGetter;
private Object value;
private String op;
public SimpleAuditExpression(PropertyNameGetter propertyNameGetter, Object value, String op) {
this.propertyNameGetter = propertyNameGetter;
this.value = value;
this.op = op;
}
public void addToQuery(AuditConfiguration auditCfg, AuditReaderImplementor versionsReader, String entityName,
QueryBuilder qb, Parameters parameters) {
String propertyName = CriteriaTools.determinePropertyName( auditCfg, versionsReader, entityName, propertyNameGetter );
RelationDescription relatedEntity = CriteriaTools.getRelatedEntity(auditCfg, entityName, propertyName);
if (relatedEntity == null) {
parameters.addWhereWithParam(propertyName, op, value);
} else {
if (!"=".equals(op) && !"<>".equals(op)) {
throw new AuditException("This type of operation: " + op + " (" + entityName + "." + propertyName +
") isn't supported and can't be used in queries.");
}
Object id = relatedEntity.getIdMapper().mapToIdFromEntity(value);
relatedEntity.getIdMapper().addIdEqualsToQuery(parameters, id, null, "=".equals(op));
}
}
}