Package org.hibernate.impl

Class CriteriaImpl

java.lang.Object

org.hibernate.impl.CriteriaImpl

All Implemented Interfaces:

Serializable, Criteria, CriteriaSpecification

public class CriteriaImpl
extends Object
implements Criteria, Serializable

Implementation of the Criteria interface

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	CriteriaImpl.CriterionEntry
static final class	CriteriaImpl.OrderEntry
final class	CriteriaImpl.Subcriteria

Field Summary

Fields inherited from interface org.hibernate.criterion.CriteriaSpecification

ALIAS_TO_ENTITY_MAP, DISTINCT_ROOT_ENTITY, FULL_JOIN, INNER_JOIN, LEFT_JOIN, PROJECTION, ROOT_ALIAS, ROOT_ENTITY

Constructor Summary

Constructors

Constructor	Description
CriteriaImpl(String entityOrClassName, String alias, SessionImplementor session)
CriteriaImpl(String entityOrClassName, SessionImplementor session)

Method Summary

Modifier and Type	Method	Description
Criteria	add(Criteria criteriaInst, Criterion expression)
Criteria	add(Criterion expression)	Add a restriction to constrain the results to be retrieved.
Criteria	addOrder(Order ordering)	Add an ordering to the result set.
protected void	after()
protected void	before()
Criteria	createAlias(String associationPath, String alias)	Join an association, assigning an alias to the joined association.
Criteria	createAlias(String associationPath, String alias, int joinType)	Join an association using the specified join-type, assigning an alias to the joined association.
Criteria	createAlias(String associationPath, String alias, int joinType, Criterion withClause)	Join an association using the specified join-type, assigning an alias to the joined association.
Criteria	createCriteria(String associationPath)	Create a new Criteria, "rooted" at the associated entity.
Criteria	createCriteria(String associationPath, int joinType)	Create a new Criteria, "rooted" at the associated entity, using the specified join type.
Criteria	createCriteria(String associationPath, String alias)	Create a new Criteria, "rooted" at the associated entity, assigning the given alias.
Criteria	createCriteria(String associationPath, String alias, int joinType)	Create a new Criteria, "rooted" at the associated entity, assigning the given alias and using the specified join type.
Criteria	createCriteria(String associationPath, String alias, int joinType, Criterion withClause)	Create a new Criteria, "rooted" at the associated entity, assigning the given alias and using the specified join type.
String	getAlias()	Get the alias of the entity encapsulated by this criteria instance.
boolean	getCacheable()
String	getCacheRegion()
String	getComment()
String	getEntityOrClassName()
FetchMode	getFetchMode(String path)
Integer	getFetchSize()
Integer	getFirstResult()
Map	getLockModes()
Integer	getMaxResults()
Projection	getProjection()
Criteria	getProjectionCriteria()
ResultTransformer	getResultTransformer()
SessionImplementor	getSession()
Integer	getTimeout()
boolean	isLookupByNaturalKey()
boolean	isReadOnly()	Should entities and proxies loaded by this Criteria be put in read-only mode? If the read-only/modifiable setting was not initialized, then the default read-only/modifiable setting for the persistence context is returned instead.
boolean	isReadOnlyInitialized()	Was the read-only/modifiable mode explicitly initialized?
Iterator	iterateExpressionEntries()
Iterator	iterateOrderings()
Iterator	iterateSubcriteria()
List	list()	Get the results.
ScrollableResults	scroll()	Get the results as an instance of ScrollableResults
ScrollableResults	scroll(ScrollMode scrollMode)	Get the results as an instance of ScrollableResults based on the given scroll mode.
Criteria	setCacheable(boolean cacheable)	Enable caching of this query result, provided query caching is enabled for the underlying session factory.
Criteria	setCacheMode(CacheMode cacheMode)	Override the cache mode for this particular query.
Criteria	setCacheRegion(String cacheRegion)	Set the name of the cache region to use for query result caching.
Criteria	setComment(String comment)	Add a comment to the generated SQL.
Criteria	setFetchMode(String associationPath, FetchMode mode)	Specify an association fetching strategy for an association or a collection of values.
Criteria	setFetchSize(int fetchSize)	Set a fetch size for the underlying JDBC query.
Criteria	setFirstResult(int firstResult)	Set the first result to be retrieved.
Criteria	setFlushMode(FlushMode flushMode)	Override the flush mode for this particular query.
Criteria	setLockMode(String alias, LockMode lockMode)	Set the lock mode of the aliased entity
Criteria	setLockMode(LockMode lockMode)	Set the lock mode of the current entity
Criteria	setMaxResults(int maxResults)	Set a limit upon the number of objects to be retrieved.
Criteria	setProjection(Projection projection)	Used to specify that the query results will be a projection (scalar in nature).
Criteria	setReadOnly(boolean readOnly)	Set the read-only/modifiable mode for entities and proxies loaded by this Criteria.
Criteria	setResultTransformer(ResultTransformer tupleMapper)	Set a strategy for handling the query results.
void	setSession(SessionImplementor session)
Criteria	setTimeout(int timeout)	Set a timeout for the underlying JDBC query.
String	toString()
Object	uniqueResult()	Convenience method to return a single instance that matches the query, or null if the query returns no results.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

CriteriaImpl

public CriteriaImpl(String entityOrClassName,
 SessionImplementor session)

CriteriaImpl

public CriteriaImpl(String entityOrClassName,
 String alias,
 SessionImplementor session)

Method Details

toString

public String toString()

Overrides:

toString in class Object

getSession

public SessionImplementor getSession()

setSession

public void setSession(SessionImplementor session)

getEntityOrClassName

public String getEntityOrClassName()

getLockModes

public Map getLockModes()

getProjectionCriteria

public Criteria getProjectionCriteria()

iterateSubcriteria

public Iterator iterateSubcriteria()

iterateExpressionEntries

public Iterator iterateExpressionEntries()

iterateOrderings

public Iterator iterateOrderings()

add

public Criteria add(Criteria criteriaInst,
 Criterion expression)

getAlias

public String getAlias()

Description copied from interface: Criteria

Get the alias of the entity encapsulated by this criteria instance.

Specified by:

getAlias in interface Criteria

Returns:

The alias for the encapsulated entity.

getProjection

public Projection getProjection()

setProjection

public Criteria setProjection(Projection projection)

Description copied from interface: Criteria

Used to specify that the query results will be a projection (scalar in nature). Implicitly specifies the CriteriaSpecification.PROJECTION result transformer.

The individual components contained within the given projection determines the overall "shape" of the query result.

Specified by:

setProjection in interface Criteria

Parameters:

projection - The projection representing the overall "shape" of the query results.

Returns:

this (for method chaining)

add

public Criteria add(Criterion expression)

Description copied from interface: Criteria

Add a restriction to constrain the results to be retrieved.

Specified by:

add in interface Criteria

Parameters:

expression - The criterion object representing the restriction to be applied.

Returns:

this (for method chaining)

addOrder

public Criteria addOrder(Order ordering)

Description copied from interface: Criteria

Add an ordering to the result set.

Specified by:

addOrder in interface Criteria

Parameters:

ordering - The order object representing an ordering to be applied to the results.

Returns:

this (for method chaining)

getFetchMode

public FetchMode getFetchMode(String path)

setFetchMode

public Criteria setFetchMode(String associationPath,
 FetchMode mode)

Description copied from interface: Criteria

Specify an association fetching strategy for an association or a collection of values.

Specified by:

setFetchMode in interface Criteria

Parameters:

associationPath - a dot seperated property path

mode - The fetch mode for the referenced association

Returns:

this (for method chaining)

setLockMode

public Criteria setLockMode(LockMode lockMode)

Description copied from interface: Criteria

Set the lock mode of the current entity

Specified by:

setLockMode in interface Criteria

Parameters:

lockMode - The lock mode to be applied

Returns:

this (for method chaining)

setLockMode

public Criteria setLockMode(String alias,
 LockMode lockMode)

Description copied from interface: Criteria

Set the lock mode of the aliased entity

Specified by:

setLockMode in interface Criteria

Parameters:

alias - The previously assigned alias representing the entity to which the given lock mode should apply.

lockMode - The lock mode to be applied

Returns:

this (for method chaining)

createAlias

public Criteria createAlias(String associationPath,
 String alias)

Description copied from interface: Criteria

Join an association, assigning an alias to the joined association.

Functionally equivalent to Criteria.createAlias(String, String, int) using CriteriaSpecification.INNER_JOIN for the joinType.

Specified by:

createAlias in interface Criteria

Parameters:

associationPath - A dot-seperated property path

alias - The alias to assign to the joined association (for later reference).

Returns:

this (for method chaining)

createAlias

public Criteria createAlias(String associationPath,
 String alias,
 int joinType)

Description copied from interface: Criteria

Join an association using the specified join-type, assigning an alias to the joined association.

The joinType is expected to be one of CriteriaSpecification.INNER_JOIN (the default), CriteriaSpecification.FULL_JOIN, or CriteriaSpecification.LEFT_JOIN.

Specified by:

createAlias in interface Criteria

Parameters:

associationPath - A dot-seperated property path

alias - The alias to assign to the joined association (for later reference).

joinType - The type of join to use.

Returns:

this (for method chaining)

createAlias

public Criteria createAlias(String associationPath,
 String alias,
 int joinType,
 Criterion withClause)

Description copied from interface: Criteria

Join an association using the specified join-type, assigning an alias to the joined association.

The joinType is expected to be one of CriteriaSpecification.INNER_JOIN (the default), CriteriaSpecification.FULL_JOIN, or CriteriaSpecification.LEFT_JOIN.

Specified by:

createAlias in interface Criteria

Parameters:

associationPath - A dot-seperated property path

alias - The alias to assign to the joined association (for later reference).

joinType - The type of join to use.

withClause - The criteria to be added to the join condition (ON clause)

Returns:

this (for method chaining)

createCriteria

public Criteria createCriteria(String associationPath)

Description copied from interface: Criteria

Create a new Criteria, "rooted" at the associated entity.

Functionally equivalent to Criteria.createCriteria(String, int) using CriteriaSpecification.INNER_JOIN for the joinType.

Specified by:

createCriteria in interface Criteria

Parameters:

associationPath - A dot-seperated property path

Returns:

the created "sub criteria"

createCriteria

public Criteria createCriteria(String associationPath,
 int joinType)

Description copied from interface: Criteria

Create a new Criteria, "rooted" at the associated entity, using the specified join type.

Specified by:

createCriteria in interface Criteria

Parameters:

associationPath - A dot-seperated property path

joinType - The type of join to use.

Returns:

the created "sub criteria"

createCriteria

public Criteria createCriteria(String associationPath,
 String alias)

Description copied from interface: Criteria

Create a new Criteria, "rooted" at the associated entity, assigning the given alias.

Functionally equivalent to Criteria.createCriteria(String, String, int) using CriteriaSpecification.INNER_JOIN for the joinType.

Specified by:

createCriteria in interface Criteria

Parameters:

associationPath - A dot-seperated property path

alias - The alias to assign to the joined association (for later reference).

Returns:

the created "sub criteria"

createCriteria

public Criteria createCriteria(String associationPath,
 String alias,
 int joinType)

Description copied from interface: Criteria

Create a new Criteria, "rooted" at the associated entity, assigning the given alias and using the specified join type.

Specified by:

createCriteria in interface Criteria

Parameters:

associationPath - A dot-seperated property path

alias - The alias to assign to the joined association (for later reference).

joinType - The type of join to use.

Returns:

the created "sub criteria"

createCriteria

public Criteria createCriteria(String associationPath,
 String alias,
 int joinType,
 Criterion withClause)

Description copied from interface: Criteria

Create a new Criteria, "rooted" at the associated entity, assigning the given alias and using the specified join type.

Specified by:

createCriteria in interface Criteria

Parameters:

associationPath - A dot-seperated property path

alias - The alias to assign to the joined association (for later reference).

joinType - The type of join to use.

withClause - The criteria to be added to the join condition (ON clause)

Returns:

the created "sub criteria"

getResultTransformer

public ResultTransformer getResultTransformer()

setResultTransformer

public Criteria setResultTransformer(ResultTransformer tupleMapper)

Description copied from interface: Criteria

Set a strategy for handling the query results. This determines the "shape" of the query result.

Specified by:

setResultTransformer in interface Criteria

Parameters:

tupleMapper - The transformer to apply

Returns:

this (for method chaining)

See Also:

• CriteriaSpecification.ROOT_ENTITY
• CriteriaSpecification.DISTINCT_ROOT_ENTITY
• CriteriaSpecification.ALIAS_TO_ENTITY_MAP
• CriteriaSpecification.PROJECTION

getMaxResults

public Integer getMaxResults()

setMaxResults

public Criteria setMaxResults(int maxResults)

Description copied from interface: Criteria

Set a limit upon the number of objects to be retrieved.

Specified by:

setMaxResults in interface Criteria

Parameters:

maxResults - the maximum number of results

Returns:

this (for method chaining)

getFirstResult

public Integer getFirstResult()

setFirstResult

public Criteria setFirstResult(int firstResult)

Description copied from interface: Criteria

Set the first result to be retrieved.

Specified by:

setFirstResult in interface Criteria

Parameters:

firstResult - the first result to retrieve, numbered from 0

Returns:

this (for method chaining)

getFetchSize

public Integer getFetchSize()

setFetchSize

public Criteria setFetchSize(int fetchSize)

Description copied from interface: Criteria

Set a fetch size for the underlying JDBC query.

Specified by:

setFetchSize in interface Criteria

Parameters:

fetchSize - the fetch size

Returns:

this (for method chaining)

See Also:

• Statement.setFetchSize(int)

getTimeout

public Integer getTimeout()

setTimeout

public Criteria setTimeout(int timeout)

Description copied from interface: Criteria

Set a timeout for the underlying JDBC query.

Specified by:

setTimeout in interface Criteria

Parameters:

timeout - The timeout value to apply.

Returns:

this (for method chaining)

See Also:

• Statement.setQueryTimeout(int)

isReadOnlyInitialized

public boolean isReadOnlyInitialized()

Was the read-only/modifiable mode explicitly initialized?

Specified by:

isReadOnlyInitialized in interface Criteria

Returns:

true, the read-only/modifiable mode was explicitly initialized; false, otherwise.

See Also:

• Criteria.setReadOnly(boolean)

isReadOnly

public boolean isReadOnly()

Should entities and proxies loaded by this Criteria be put in read-only mode? If the read-only/modifiable setting was not initialized, then the default read-only/modifiable setting for the persistence context is returned instead.

Specified by:

isReadOnly in interface Criteria

Returns:

true, entities and proxies loaded by the criteria will be put in read-only mode false, entities and proxies loaded by the criteria will be put in modifiable mode

See Also:

• Criteria.setReadOnly(boolean)
• The read-only/modifiable setting has no impact on entities/proxies returned by the Criteria that existed in the session before the Criteria was executed.
• Criteria.isReadOnlyInitialized()

setReadOnly

public Criteria setReadOnly(boolean readOnly)

Set the read-only/modifiable mode for entities and proxies loaded by this Criteria. This setting overrides the default setting for the persistence context.

Specified by:

setReadOnly in interface Criteria

Parameters:

readOnly - true, entities and proxies loaded by the criteria will be put in read-only mode false, entities and proxies loaded by the criteria will be put in modifiable mode

See Also:

• To set the default read-only/modifiable setting used for entities and proxies that are loaded into the session:
• PersistenceContext.setDefaultReadOnly(boolean)
• Read-only entities are not dirty-checked and snapshots of persistent state are not maintained. Read-only entities can be modified, but changes are not persisted. When a proxy is initialized, the loaded entity will have the same read-only/modifiable setting as the uninitialized proxy has, regardless of the session's current setting. The read-only/modifiable setting has no impact on entities/proxies returned by the criteria that existed in the session before the criteria was executed.

getCacheable

public boolean getCacheable()

setCacheable

public Criteria setCacheable(boolean cacheable)

Description copied from interface: Criteria

Enable caching of this query result, provided query caching is enabled for the underlying session factory.

Specified by:

setCacheable in interface Criteria

Parameters:

cacheable - Should the result be considered cacheable; default is to not cache (false).

Returns:

this (for method chaining)

getCacheRegion

public String getCacheRegion()

setCacheRegion

public Criteria setCacheRegion(String cacheRegion)

Description copied from interface: Criteria

Set the name of the cache region to use for query result caching.

Specified by:

setCacheRegion in interface Criteria

Parameters:

cacheRegion - the name of a query cache region, or null for the default query cache

Returns:

this (for method chaining)

See Also:

• Criteria.setCacheable(boolean)

getComment

public String getComment()

setComment

public Criteria setComment(String comment)

Description copied from interface: Criteria

Add a comment to the generated SQL.

Specified by:

setComment in interface Criteria

Parameters:

comment - a human-readable string

Returns:

this (for method chaining)

setFlushMode

public Criteria setFlushMode(FlushMode flushMode)

Description copied from interface: Criteria

Override the flush mode for this particular query.

Specified by:

setFlushMode in interface Criteria

Parameters:

flushMode - The flush mode to use.

Returns:

this (for method chaining)

setCacheMode

public Criteria setCacheMode(CacheMode cacheMode)

Description copied from interface: Criteria

Override the cache mode for this particular query.

Specified by:

setCacheMode in interface Criteria

Parameters:

cacheMode - The cache mode to use.

Returns:

this (for method chaining)

list

public List list()
          throws HibernateException

Description copied from interface: Criteria

Get the results.

Specified by:

list in interface Criteria

Returns:

The list of matched query results.

Throws:

HibernateException - Indicates a problem either translating the criteria to SQL, exeucting the SQL or processing the SQL results.

scroll

public ScrollableResults scroll()

Description copied from interface: Criteria

Get the results as an instance of ScrollableResults

Specified by:

scroll in interface Criteria

Returns:

The ScrollableResults representing the matched query results.

scroll

public ScrollableResults scroll(ScrollMode scrollMode)

Description copied from interface: Criteria

Get the results as an instance of ScrollableResults based on the given scroll mode.

Specified by:

scroll in interface Criteria

Parameters:

scrollMode - Indicates the type of underlying database cursor to request.

Returns:

The ScrollableResults representing the matched query results.

uniqueResult

public Object uniqueResult()
                    throws HibernateException

Description copied from interface: Criteria

Convenience method to return a single instance that matches the query, or null if the query returns no results.

Specified by:

uniqueResult in interface Criteria

Returns:

the single result or null

Throws:

HibernateException - if there is more than one matching result

before

protected void before()

after

protected void after()

isLookupByNaturalKey

public boolean isLookupByNaturalKey()