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org.hibernate.impl.CriteriaImpl 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
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Middleware LLC.
*
* 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:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*
*/
package org.hibernate.impl;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.hibernate.CacheMode;
import org.hibernate.Criteria;
import org.hibernate.FetchMode;
import org.hibernate.FlushMode;
import org.hibernate.HibernateException;
import org.hibernate.LockMode;
import org.hibernate.ScrollMode;
import org.hibernate.ScrollableResults;
import org.hibernate.criterion.Criterion;
import org.hibernate.criterion.NaturalIdentifier;
import org.hibernate.criterion.Order;
import org.hibernate.criterion.Projection;
import org.hibernate.engine.SessionImplementor;
import org.hibernate.transform.ResultTransformer;
import org.hibernate.util.StringHelper;
/**
* Implementation of the Criteria interface
* @author Gavin King
*/
public class CriteriaImpl implements Criteria, Serializable {
private final String entityOrClassName;
private transient SessionImplementor session;
private final String rootAlias;
private List criterionEntries = new ArrayList();
private List orderEntries = new ArrayList();
private Projection projection;
private Criteria projectionCriteria;
private List subcriteriaList = new ArrayList();
private Map fetchModes = new HashMap();
private Map lockModes = new HashMap();
private Integer maxResults;
private Integer firstResult;
private Integer timeout;
private Integer fetchSize;
private boolean cacheable;
private String cacheRegion;
private String comment;
private FlushMode flushMode;
private CacheMode cacheMode;
private FlushMode sessionFlushMode;
private CacheMode sessionCacheMode;
private Boolean readOnly;
private ResultTransformer resultTransformer = Criteria.ROOT_ENTITY;
// Constructors ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
public CriteriaImpl(String entityOrClassName, SessionImplementor session) {
this(entityOrClassName, ROOT_ALIAS, session);
}
public CriteriaImpl(String entityOrClassName, String alias, SessionImplementor session) {
this.session = session;
this.entityOrClassName = entityOrClassName;
this.cacheable = false;
this.rootAlias = alias;
}
public String toString() {
return "CriteriaImpl(" +
entityOrClassName + ":" +
(rootAlias==null ? "" : rootAlias) +
subcriteriaList.toString() +
criterionEntries.toString() +
( projection==null ? "" : projection.toString() ) +
')';
}
// State ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
public SessionImplementor getSession() {
return session;
}
public void setSession(SessionImplementor session) {
this.session = session;
}
public String getEntityOrClassName() {
return entityOrClassName;
}
public Map getLockModes() {
return lockModes;
}
public Criteria getProjectionCriteria() {
return projectionCriteria;
}
public Iterator iterateSubcriteria() {
return subcriteriaList.iterator();
}
public Iterator iterateExpressionEntries() {
return criterionEntries.iterator();
}
public Iterator iterateOrderings() {
return orderEntries.iterator();
}
public Criteria add(Criteria criteriaInst, Criterion expression) {
criterionEntries.add( new CriterionEntry(expression, criteriaInst) );
return this;
}
// Criteria impl ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
public String getAlias() {
return rootAlias;
}
public Projection getProjection() {
return projection;
}
public Criteria setProjection(Projection projection) {
this.projection = projection;
this.projectionCriteria = this;
setResultTransformer( PROJECTION );
return this;
}
public Criteria add(Criterion expression) {
add( this, expression );
return this;
}
public Criteria addOrder(Order ordering) {
orderEntries.add( new OrderEntry( ordering, this ) );
return this;
}
public FetchMode getFetchMode(String path) {
return (FetchMode) fetchModes.get(path);
}
public Criteria setFetchMode(String associationPath, FetchMode mode) {
fetchModes.put( associationPath, mode );
return this;
}
public Criteria setLockMode(LockMode lockMode) {
return setLockMode( getAlias(), lockMode );
}
public Criteria setLockMode(String alias, LockMode lockMode) {
lockModes.put( alias, lockMode );
return this;
}
public Criteria createAlias(String associationPath, String alias) {
return createAlias( associationPath, alias, INNER_JOIN );
}
public Criteria createAlias(String associationPath, String alias, int joinType) {
new Subcriteria( this, associationPath, alias, joinType );
return this;
}
public Criteria createAlias(String associationPath, String alias, int joinType, Criterion withClause) {
new Subcriteria( this, associationPath, alias, joinType, withClause );
return this;
}
public Criteria createCriteria(String associationPath) {
return createCriteria( associationPath, INNER_JOIN );
}
public Criteria createCriteria(String associationPath, int joinType) {
return new Subcriteria( this, associationPath, joinType );
}
public Criteria createCriteria(String associationPath, String alias) {
return createCriteria( associationPath, alias, INNER_JOIN );
}
public Criteria createCriteria(String associationPath, String alias, int joinType) {
return new Subcriteria( this, associationPath, alias, joinType );
}
public Criteria createCriteria(String associationPath, String alias, int joinType, Criterion withClause) {
return new Subcriteria( this, associationPath, alias, joinType, withClause );
}
public ResultTransformer getResultTransformer() {
return resultTransformer;
}
public Criteria setResultTransformer(ResultTransformer tupleMapper) {
this.resultTransformer = tupleMapper;
return this;
}
public Integer getMaxResults() {
return maxResults;
}
public Criteria setMaxResults(int maxResults) {
this.maxResults = new Integer(maxResults);
return this;
}
public Integer getFirstResult() {
return firstResult;
}
public Criteria setFirstResult(int firstResult) {
this.firstResult = new Integer(firstResult);
return this;
}
public Integer getFetchSize() {
return fetchSize;
}
public Criteria setFetchSize(int fetchSize) {
this.fetchSize = new Integer(fetchSize);
return this;
}
public Integer getTimeout() {
return timeout;
}
public Criteria setTimeout(int timeout) {
this.timeout = new Integer(timeout);
return this;
}
/**
* {@inheritDoc}
*/
public boolean isReadOnlyInitialized() {
return readOnly != null;
}
/**
* {@inheritDoc}
*/
public boolean isReadOnly() {
if ( ! isReadOnlyInitialized() && getSession() == null ) {
throw new IllegalStateException(
"cannot determine readOnly/modifiable setting when it is not initialized and is not initialized and getSession() == null"
);
}
return ( isReadOnlyInitialized() ?
readOnly.booleanValue() :
getSession().getPersistenceContext().isDefaultReadOnly()
);
}
/**
* {@inheritDoc}
*/
public Criteria setReadOnly(boolean readOnly) {
this.readOnly = Boolean.valueOf( readOnly );
return this;
}
public boolean getCacheable() {
return this.cacheable;
}
public Criteria setCacheable(boolean cacheable) {
this.cacheable = cacheable;
return this;
}
public String getCacheRegion() {
return this.cacheRegion;
}
public Criteria setCacheRegion(String cacheRegion) {
this.cacheRegion = cacheRegion.trim();
return this;
}
public String getComment() {
return comment;
}
public Criteria setComment(String comment) {
this.comment = comment;
return this;
}
public Criteria setFlushMode(FlushMode flushMode) {
this.flushMode = flushMode;
return this;
}
public Criteria setCacheMode(CacheMode cacheMode) {
this.cacheMode = cacheMode;
return this;
}
public List list() throws HibernateException {
before();
try {
return session.list( this );
}
finally {
after();
}
}
public ScrollableResults scroll() {
return scroll( ScrollMode.SCROLL_INSENSITIVE );
}
public ScrollableResults scroll(ScrollMode scrollMode) {
before();
try {
return session.scroll(this, scrollMode);
}
finally {
after();
}
}
public Object uniqueResult() throws HibernateException {
return AbstractQueryImpl.uniqueElement( list() );
}
protected void before() {
if ( flushMode != null ) {
sessionFlushMode = getSession().getFlushMode();
getSession().setFlushMode( flushMode );
}
if ( cacheMode != null ) {
sessionCacheMode = getSession().getCacheMode();
getSession().setCacheMode( cacheMode );
}
}
protected void after() {
if ( sessionFlushMode != null ) {
getSession().setFlushMode( sessionFlushMode );
sessionFlushMode = null;
}
if ( sessionCacheMode != null ) {
getSession().setCacheMode( sessionCacheMode );
sessionCacheMode = null;
}
}
public boolean isLookupByNaturalKey() {
if ( projection != null ) {
return false;
}
if ( subcriteriaList.size() > 0 ) {
return false;
}
if ( criterionEntries.size() != 1 ) {
return false;
}
CriterionEntry ce = (CriterionEntry) criterionEntries.get(0);
return ce.getCriterion() instanceof NaturalIdentifier;
}
// Inner classes ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
public final class Subcriteria implements Criteria, Serializable {
private String alias;
private String path;
private Criteria parent;
private LockMode lockMode;
private int joinType;
private Criterion withClause;
private boolean hasRestriction;
// Constructors ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
private Subcriteria(Criteria parent, String path, String alias, int joinType, Criterion withClause) {
this.alias = alias;
this.path = path;
this.parent = parent;
this.joinType = joinType;
this.withClause = withClause;
this.hasRestriction = withClause != null;
CriteriaImpl.this.subcriteriaList.add( this );
}
private Subcriteria(Criteria parent, String path, String alias, int joinType) {
this( parent, path, alias, joinType, null );
}
private Subcriteria(Criteria parent, String path, int joinType) {
this( parent, path, null, joinType );
}
public String toString() {
return "Subcriteria("
+ path + ":"
+ (alias==null ? "" : alias)
+ ')';
}
// State ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
public String getAlias() {
return alias;
}
public void setAlias(String alias) {
this.alias = alias;
}
public String getPath() {
return path;
}
public Criteria getParent() {
return parent;
}
public LockMode getLockMode() {
return lockMode;
}
public Criteria setLockMode(LockMode lockMode) {
this.lockMode = lockMode;
return this;
}
public int getJoinType() {
return joinType;
}
public Criterion getWithClause() {
return this.withClause;
}
public boolean hasRestriction() {
return hasRestriction;
}
// Criteria impl ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
public Criteria add(Criterion expression) {
hasRestriction = true;
CriteriaImpl.this.add(this, expression);
return this;
}
public Criteria addOrder(Order order) {
CriteriaImpl.this.orderEntries.add( new OrderEntry(order, this) );
return this;
}
public Criteria createAlias(String associationPath, String alias) {
return createAlias( associationPath, alias, INNER_JOIN );
}
public Criteria createAlias(String associationPath, String alias, int joinType) throws HibernateException {
new Subcriteria( this, associationPath, alias, joinType );
return this;
}
public Criteria createAlias(String associationPath, String alias, int joinType, Criterion withClause) throws HibernateException {
new Subcriteria( this, associationPath, alias, joinType, withClause );
return this;
}
public Criteria createCriteria(String associationPath) {
return createCriteria( associationPath, INNER_JOIN );
}
public Criteria createCriteria(String associationPath, int joinType) throws HibernateException {
return new Subcriteria( Subcriteria.this, associationPath, joinType );
}
public Criteria createCriteria(String associationPath, String alias) {
return createCriteria( associationPath, alias, INNER_JOIN );
}
public Criteria createCriteria(String associationPath, String alias, int joinType) throws HibernateException {
return new Subcriteria( Subcriteria.this, associationPath, alias, joinType );
}
public Criteria createCriteria(String associationPath, String alias, int joinType, Criterion withClause) throws HibernateException {
return new Subcriteria( this, associationPath, alias, joinType, withClause );
}
public boolean isReadOnly() {
return CriteriaImpl.this.isReadOnly();
}
public boolean isReadOnlyInitialized() {
return CriteriaImpl.this.isReadOnlyInitialized();
}
public Criteria setReadOnly(boolean readOnly) {
CriteriaImpl.this.setReadOnly( readOnly );
return this;
}
public Criteria setCacheable(boolean cacheable) {
CriteriaImpl.this.setCacheable(cacheable);
return this;
}
public Criteria setCacheRegion(String cacheRegion) {
CriteriaImpl.this.setCacheRegion(cacheRegion);
return this;
}
public List list() throws HibernateException {
return CriteriaImpl.this.list();
}
public ScrollableResults scroll() throws HibernateException {
return CriteriaImpl.this.scroll();
}
public ScrollableResults scroll(ScrollMode scrollMode) throws HibernateException {
return CriteriaImpl.this.scroll(scrollMode);
}
public Object uniqueResult() throws HibernateException {
return CriteriaImpl.this.uniqueResult();
}
public Criteria setFetchMode(String associationPath, FetchMode mode) {
CriteriaImpl.this.setFetchMode( StringHelper.qualify(path, associationPath), mode);
return this;
}
public Criteria setFlushMode(FlushMode flushMode) {
CriteriaImpl.this.setFlushMode(flushMode);
return this;
}
public Criteria setCacheMode(CacheMode cacheMode) {
CriteriaImpl.this.setCacheMode(cacheMode);
return this;
}
public Criteria setFirstResult(int firstResult) {
CriteriaImpl.this.setFirstResult(firstResult);
return this;
}
public Criteria setMaxResults(int maxResults) {
CriteriaImpl.this.setMaxResults(maxResults);
return this;
}
public Criteria setTimeout(int timeout) {
CriteriaImpl.this.setTimeout(timeout);
return this;
}
public Criteria setFetchSize(int fetchSize) {
CriteriaImpl.this.setFetchSize(fetchSize);
return this;
}
public Criteria setLockMode(String alias, LockMode lockMode) {
CriteriaImpl.this.setLockMode(alias, lockMode);
return this;
}
public Criteria setResultTransformer(ResultTransformer resultProcessor) {
CriteriaImpl.this.setResultTransformer(resultProcessor);
return this;
}
public Criteria setComment(String comment) {
CriteriaImpl.this.setComment(comment);
return this;
}
public Criteria setProjection(Projection projection) {
CriteriaImpl.this.projection = projection;
CriteriaImpl.this.projectionCriteria = this;
setResultTransformer(PROJECTION);
return this;
}
}
public static final class CriterionEntry implements Serializable {
private final Criterion criterion;
private final Criteria criteria;
private CriterionEntry(Criterion criterion, Criteria criteria) {
this.criteria = criteria;
this.criterion = criterion;
}
public Criterion getCriterion() {
return criterion;
}
public Criteria getCriteria() {
return criteria;
}
public String toString() {
return criterion.toString();
}
}
public static final class OrderEntry implements Serializable {
private final Order order;
private final Criteria criteria;
private OrderEntry(Order order, Criteria criteria) {
this.criteria = criteria;
this.order = order;
}
public Order getOrder() {
return order;
}
public Criteria getCriteria() {
return criteria;
}
public String toString() {
return order.toString();
}
}
}
