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/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2008, 2013, Red Hat Inc. 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 Inc.
*
* 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.criterion;
import java.io.Serializable;
import org.hibernate.Criteria;
import org.hibernate.FetchMode;
import org.hibernate.LockMode;
import org.hibernate.Session;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.internal.CriteriaImpl;
import org.hibernate.sql.JoinType;
import org.hibernate.transform.ResultTransformer;
/**
* Models a detached form of a Criteria (not associated with a Session).
*
* Some applications need to create criteria queries in "detached mode", where the Hibernate Session is
* not available. Applications would create a DetachableCriteria to describe the query, and then later
* associated it with a Session to obtain the "executable" Criteria:
*
* DetachedCriteria detached = new DetachedCriteria();
* ...
* Criteria criteria = detached.getExecutableCriteria( session );
* ...
* criteria.list();
*
*
* All methods have the same semantics and behavior as the corresponding methods of the Criteria interface.
*
* @author Gavin King
*
* @see org.hibernate.Criteria
*/
public class DetachedCriteria implements CriteriaSpecification, Serializable {
private final CriteriaImpl impl;
private final Criteria criteria;
protected DetachedCriteria(String entityName) {
impl = new CriteriaImpl( entityName, null );
criteria = impl;
}
protected DetachedCriteria(String entityName, String alias) {
impl = new CriteriaImpl( entityName, alias, null );
criteria = impl;
}
protected DetachedCriteria(CriteriaImpl impl, Criteria criteria) {
this.impl = impl;
this.criteria = criteria;
}
/**
* Get an executable instance of Criteria to actually run the query.
*
* @param session The session to associate the built Criteria with
*
* @return The "executable" Criteria
*/
public Criteria getExecutableCriteria(Session session) {
impl.setSession( (SessionImplementor) session );
return impl;
}
/**
* Obtain the alias associated with this DetachedCriteria
*
* @return The alias
*/
public String getAlias() {
return criteria.getAlias();
}
/**
* Retrieve the CriteriaImpl used internally to hold the DetachedCriteria state
*
* @return The internally maintained CriteriaImpl
*/
CriteriaImpl getCriteriaImpl() {
return impl;
}
/**
* Static builder to create a DetachedCriteria for the given entity.
*
* @param entityName The name of the entity to create a DetachedCriteria for
*
* @return The DetachedCriteria
*/
@SuppressWarnings("UnusedDeclaration")
public static DetachedCriteria forEntityName(String entityName) {
return new DetachedCriteria( entityName );
}
/**
* Static builder to create a DetachedCriteria for the given entity.
*
* @param entityName The name of the entity to create a DetachedCriteria for
* @param alias The alias to apply to the entity
*
* @return The DetachedCriteria
*/
@SuppressWarnings("UnusedDeclaration")
public static DetachedCriteria forEntityName(String entityName, String alias) {
return new DetachedCriteria( entityName, alias );
}
/**
* Static builder to create a DetachedCriteria for the given entity, by its Class.
*
* @param clazz The entity class
*
* @return The DetachedCriteria
*/
public static DetachedCriteria forClass(Class clazz) {
return new DetachedCriteria( clazz.getName() );
}
/**
* Static builder to create a DetachedCriteria for the given entity, by its Class.
*
* @param clazz The entity class
* @param alias The alias to apply to the entity
*
* @return The DetachedCriteria
*/
public static DetachedCriteria forClass(Class clazz, String alias) {
return new DetachedCriteria( clazz.getName() , alias );
}
/**
* Add a restriction
*
* @param criterion The restriction
*
* @return {@code this}, for method chaining
*/
public DetachedCriteria add(Criterion criterion) {
criteria.add( criterion );
return this;
}
/**
* Adds an ordering
*
* @param order The ordering
*
* @return {@code this}, for method chaining
*/
public DetachedCriteria addOrder(Order order) {
criteria.addOrder( order );
return this;
}
/**
* Set the fetch mode for a given association
*
* @param associationPath The association path
* @param mode The fetch mode to apply
*
* @return {@code this}, for method chaining
*/
public DetachedCriteria setFetchMode(String associationPath, FetchMode mode) {
criteria.setFetchMode( associationPath, mode );
return this;
}
/**
* Set the projection to use.
*
* @param projection The projection to use
*
* @return {@code this}, for method chaining
*/
public DetachedCriteria setProjection(Projection projection) {
criteria.setProjection( projection );
return this;
}
/**
* Set the result transformer to use.
*
* @param resultTransformer The result transformer to use
*
* @return {@code this}, for method chaining
*/
public DetachedCriteria setResultTransformer(ResultTransformer resultTransformer) {
criteria.setResultTransformer( resultTransformer );
return this;
}
/**
* Creates an association path alias within this DetachedCriteria. The alias can then be used in further
* alias creations or restrictions, etc.
*
* @param associationPath The association path
* @param alias The alias to apply to that association path
*
* @return {@code this}, for method chaining
*/
public DetachedCriteria createAlias(String associationPath, String alias) {
criteria.createAlias( associationPath, alias );
return this;
}
/**
* Creates an association path alias within this DetachedCriteria specifying the type of join. The alias
* can then be used in further alias creations or restrictions, etc.
*
* @param associationPath The association path
* @param alias The alias to apply to that association path
* @param joinType The type of join to use
*
* @return {@code this}, for method chaining
*/
public DetachedCriteria createAlias(String associationPath, String alias, JoinType joinType) {
criteria.createAlias( associationPath, alias, joinType );
return this;
}
/**
* Creates an association path alias within this DetachedCriteria specifying the type of join. The alias
* can then be used in further alias creations or restrictions, etc.
*
* @param associationPath The association path
* @param alias The alias to apply to that association path
* @param joinType The type of join to use
* @param withClause An additional restriction on the join
*
* @return {@code this}, for method chaining
*/
public DetachedCriteria createAlias(String associationPath, String alias, JoinType joinType, Criterion withClause) {
criteria.createAlias( associationPath, alias, joinType, withClause );
return this;
}
/**
* Deprecated!
*
* @param associationPath The association path
* @param alias The alias to apply to that association path
* @param joinType The type of join to use
*
* @return {@code this}, for method chaining
*
* @deprecated use {@link #createAlias(String, String, JoinType)}
*/
@Deprecated
public DetachedCriteria createAlias(String associationPath, String alias, int joinType) {
return createAlias( associationPath, alias, JoinType.parse( joinType ) );
}
/**
* Deprecated!
*
* @param associationPath The association path
* @param alias The alias to apply to that association path
* @param joinType The type of join to use
* @param withClause An additional restriction on the join
*
* @return {@code this}, for method chaining
*
* @deprecated use {@link #createAlias(String, String, JoinType, Criterion)}
*/
@Deprecated
public DetachedCriteria createAlias(String associationPath, String alias, int joinType, Criterion withClause) {
return createAlias( associationPath, alias, JoinType.parse( joinType ), withClause );
}
/**
* Creates an nested DetachedCriteria representing the association path.
*
* @param associationPath The association path
* @param alias The alias to apply to that association path
*
* @return the newly created, nested DetachedCriteria
*/
public DetachedCriteria createCriteria(String associationPath, String alias) {
return new DetachedCriteria( impl, criteria.createCriteria( associationPath, alias ) );
}
/**
* Creates an nested DetachedCriteria representing the association path.
*
* @param associationPath The association path
*
* @return the newly created, nested DetachedCriteria
*/
public DetachedCriteria createCriteria(String associationPath) {
return new DetachedCriteria( impl, criteria.createCriteria( associationPath ) );
}
/**
* Creates an nested DetachedCriteria representing the association path, specifying the type of join to use.
*
* @param associationPath The association path
* @param joinType The type of join to use
*
* @return the newly created, nested DetachedCriteria
*/
public DetachedCriteria createCriteria(String associationPath, JoinType joinType) {
return new DetachedCriteria( impl, criteria.createCriteria( associationPath, joinType ) );
}
/**
* Creates an nested DetachedCriteria representing the association path, specifying the type of join to use.
*
* @param associationPath The association path
* @param alias The alias to associate with this "join".
* @param joinType The type of join to use
*
* @return the newly created, nested DetachedCriteria
*/
public DetachedCriteria createCriteria(String associationPath, String alias, JoinType joinType) {
return new DetachedCriteria( impl, criteria.createCriteria( associationPath, alias, joinType ) );
}
/**
* Creates an nested DetachedCriteria representing the association path, specifying the type of join to use and
* an additional join restriction.
*
* @param associationPath The association path
* @param alias The alias to associate with this "join".
* @param joinType The type of join to use
* @param withClause The additional join restriction
*
* @return the newly created, nested DetachedCriteria
*/
public DetachedCriteria createCriteria(String associationPath, String alias, JoinType joinType, Criterion withClause) {
return new DetachedCriteria(impl, criteria.createCriteria( associationPath, alias, joinType, withClause ) );
}
/**
* Deprecated!
*
* @param associationPath The association path
* @param joinType The type of join to use
*
* @return the newly created, nested DetachedCriteria
*
* @deprecated use {@link #createCriteria(String, JoinType)}
*/
@Deprecated
public DetachedCriteria createCriteria(String associationPath, int joinType) {
return createCriteria( associationPath, JoinType.parse( joinType ) );
}
/**
* Deprecated!
*
* @param associationPath The association path
* @param alias The alias
* @param joinType The type of join to use
*
* @return the newly created, nested DetachedCriteria
*
* @deprecated use {@link #createCriteria(String, String, JoinType)}
*/
@Deprecated
public DetachedCriteria createCriteria(String associationPath, String alias, int joinType) {
return createCriteria( associationPath, alias, JoinType.parse( joinType ) );
}
/**
* Deprecated!
*
* @param associationPath The association path
* @param alias The alias to associate with this "join".
* @param joinType The type of join to use
* @param withClause The additional join restriction
*
* @return the newly created, nested DetachedCriteria
*
* @deprecated use {@link #createCriteria(String, String, JoinType, Criterion)}
*/
@Deprecated
public DetachedCriteria createCriteria(String associationPath, String alias, int joinType, Criterion withClause) {
return createCriteria( associationPath, alias, JoinType.parse( joinType ), withClause );
}
/**
* Set the SQL comment to use.
*
* @param comment The SQL comment to use
*
* @return {@code this}, for method chaining
*/
public DetachedCriteria setComment(String comment) {
criteria.setComment( comment );
return this;
}
/**
* Set the lock mode to use.
*
* @param lockMode The lock mode to use
*
* @return {@code this}, for method chaining
*/
public DetachedCriteria setLockMode(LockMode lockMode) {
criteria.setLockMode( lockMode );
return this;
}
/**
* Set an alias-specific lock mode. The specified lock mode applies only to that alias.
*
* @param alias The alias to apply the lock to
* @param lockMode The lock mode to use.
*
* @return {@code this}, for method chaining
*/
public DetachedCriteria setLockMode(String alias, LockMode lockMode) {
criteria.setLockMode( alias, lockMode );
return this;
}
@Override
public String toString() {
return "DetachableCriteria(" + criteria.toString() + ')';
}
}
