Package org.hibernate

Interface Session

  • All Superinterfaces:
    java.lang.AutoCloseable, java.io.Closeable, EntityManager, HibernateEntityManager, QueryProducer, java.io.Serializable, SharedSessionContract
    All Known Subinterfaces:
    EventSource, SessionImplementor
    All Known Implementing Classes:
    SessionDelegatorBaseImpl, SessionLazyDelegator
    public interface Session
extends SharedSessionContract, EntityManager, HibernateEntityManager, java.lang.AutoCloseable, java.io.Closeable
    The main runtime interface between a Java application and Hibernate. This is the central API class abstracting the notion of a persistence service.

    The lifecycle of a Session is bounded by the beginning and end of a logical transaction. (Long transactions might span several database transactions.)

    The main function of the Session is to offer create, read and delete operations for instances of mapped entity classes. Instances may exist in one of three states:

    transient: never persistent, not associated with any Session
    persistent: associated with a unique Session
    detached: previously persistent, not associated with any Session

    Transient instances may be made persistent by calling save(), persist() or saveOrUpdate(). Persistent instances may be made transient by calling delete(). Any instance returned by a get() or load() method is persistent. Detached instances may be made persistent by calling update(), saveOrUpdate(), lock() or replicate(). The state of a transient or detached instance may also be made persistent as a new persistent instance by calling merge().

    save() and persist() result in an SQL INSERT, delete() in an SQL DELETE and update() or merge() in an SQL UPDATE. Changes to persistent instances are detected at flush time and also result in an SQL UPDATE. saveOrUpdate() and replicate() result in either an INSERT or an UPDATE.

    It is not intended that implementors be threadsafe. Instead each thread/transaction should obtain its own instance from a SessionFactory.

    A Session instance is serializable if its persistent classes are serializable.

    A typical transaction should use the following idiom: 
     Session sess = factory.openSession();
 Transaction tx;
 try {
     tx = sess.beginTransaction();
     //do some work
     ...
     tx.commit();
 }
 catch (Exception e) {
     if (tx!=null) tx.rollback();
     throw e;
 }
 finally {
     sess.close();
 }

    If the Session throws an exception, the transaction must be rolled back and the session discarded. The internal state of the Session might not be consistent with the database after the exception occurs.
    See Also:
    SessionFactory

    • Method Detail

      • sessionWithOptions

        SharedSessionBuilder sessionWithOptions()
        Obtain a Session builder with the ability to grab certain information from this session.
        Returns:
        The session builder

      • flush

        void flush()
    throws HibernateException
        Force this session to flush. Must be called at the end of a unit of work, before committing the transaction and closing the session (depending on setFlushMode(FlushMode), EntityTransaction.commit() calls this method).

        Flushing is the process of synchronizing the underlying persistent store with persistable state held in memory.

        Specified by:
        flush in interface EntityManager
        Throws:
        HibernateException - Indicates problems flushing the session or talking to the database.

      • setFlushMode

        @Deprecated
void setFlushMode​(FlushMode flushMode)
        Deprecated.
        (since 5.2) use setHibernateFlushMode(FlushMode) instead
        Set the flush mode for this session.

        The flush mode determines the points at which the session is flushed. Flushing is the process of synchronizing the underlying persistent store with persistable state held in memory.

        For a logically "read only" session, it is reasonable to set the session's flush mode to FlushMode.MANUAL at the start of the session (in order to achieve some extra performance).

        Parameters:
        flushMode - the new flush mode

      • getFlushMode

        FlushModeType getFlushMode()

        For users of the Hibernate native APIs, we've had to rename this method as defined by Hibernate historically because the JPA contract defines a method of the same name, but returning the JPA FlushModeType rather than Hibernate's FlushMode. For the former behavior, use getHibernateFlushMode() instead.

        Specified by:
        getFlushMode in interface EntityManager
        Returns:
        The FlushModeType in effect for this Session.

      • setHibernateFlushMode

        void setHibernateFlushMode​(FlushMode flushMode)
        Set the flush mode for this session.

        The flush mode determines the points at which the session is flushed. Flushing is the process of synchronizing the underlying persistent store with persistable state held in memory.

        For a logically "read only" session, it is reasonable to set the session's flush mode to FlushMode.MANUAL at the start of the session (in order to achieve some extra performance).

        Parameters:
        flushMode - the new flush mode

      • getHibernateFlushMode

        FlushMode getHibernateFlushMode()
        Get the current flush mode for this session.
        Returns:
        The flush mode

      • setCacheMode

        void setCacheMode​(CacheMode cacheMode)
        Set the cache mode.

        Cache mode determines the manner in which this session can interact with the second level cache.

        Parameters:
        cacheMode - The new cache mode.

      • getCacheMode

        CacheMode getCacheMode()
        Get the current cache mode.
        Returns:
        The current cache mode.

      • getSessionFactory

        SessionFactory getSessionFactory()
        Get the session factory which created this session.
        Returns:
        The session factory.
        See Also:
        SessionFactory

      • cancelQuery

        void cancelQuery()
          throws HibernateException
        Cancel the execution of the current query.

        This is the sole method on session which may be safely called from another thread.

        Throws:
        HibernateException - There was a problem canceling the query

      • isDirty

        boolean isDirty()
         throws HibernateException
        Does this session contain any changes which must be synchronized with the database? In other words, would any DML operations be executed if we flushed this session?
        Returns:
        True if the session contains pending changes; false otherwise.
        Throws:
        HibernateException - could not perform dirtying checking

      • isDefaultReadOnly

        boolean isDefaultReadOnly()
        Will entities and proxies that are loaded into this session be made read-only by default? To determine the read-only/modifiable setting for a particular entity or proxy:
        Returns:
        true, loaded entities/proxies will be made read-only by default; false, loaded entities/proxies will be made modifiable by default.
        See Also:
        isReadOnly(Object)

      • setDefaultReadOnly

        void setDefaultReadOnly​(boolean readOnly)
        Change the default for entities and proxies loaded into this session from modifiable to read-only mode, or from modifiable to read-only mode. 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. To change the read-only/modifiable setting for a particular entity or proxy that is already in this session:
        Parameters:
        readOnly - true, the default for loaded entities/proxies is read-only; false, the default for loaded entities/proxies is modifiable
        See Also:
        To override this session's read-only/modifiable setting for entities and proxies loaded by a Query:, Query.setReadOnly(boolean)

      • getIdentifier

        java.io.Serializable getIdentifier​(java.lang.Object object)
        Return the identifier value of the given entity as associated with this session. An exception is thrown if the given entity instance is transient or detached in relation to this session.
        Parameters:
        object - a persistent instance
        Returns:
        the identifier
        Throws:
        TransientObjectException - if the instance is transient or associated with a different session

      • contains

        boolean contains​(java.lang.String entityName,
                 java.lang.Object object)
        Check if this entity is associated with this Session. This form caters to non-POJO entities, by allowing the entity-name to be passed in
        Parameters:
        entityName - The entity name
        object - an instance of a persistent class
        Returns:
        true if the given instance is associated with this Session

      • evict

        void evict​(java.lang.Object object)
        Remove this instance from the session cache. Changes to the instance will not be synchronized with the database. This operation cascades to associated instances if the association is mapped with cascade="evict".
        Parameters:
        object - The entity to evict
        Throws:
        java.lang.NullPointerException - if the passed object is null
        java.lang.IllegalArgumentException - if the passed object is not defined as an entity

      • load

        <T> T load​(java.lang.Class<T> theClass,
           java.io.Serializable id,
           LockMode lockMode)
        Return the persistent instance of the given entity class with the given identifier, obtaining the specified lock mode, assuming the instance exists.

        Convenient form of load(Class, Serializable, LockOptions)

        Parameters:
        theClass - a persistent class
        id - a valid identifier of an existing persistent instance of the class
        lockMode - the lock level
        Returns:
        the persistent instance or proxy
        See Also:
        load(Class, Serializable, LockOptions)

      • load

        <T> T load​(java.lang.Class<T> theClass,
           java.io.Serializable id,
           LockOptions lockOptions)
        Return the persistent instance of the given entity class with the given identifier, obtaining the specified lock mode, assuming the instance exists.
        Parameters:
        theClass - a persistent class
        id - a valid identifier of an existing persistent instance of the class
        lockOptions - contains the lock level
        Returns:
        the persistent instance or proxy

      • load

        java.lang.Object load​(java.lang.String entityName,
                      java.io.Serializable id,
                      LockMode lockMode)
        Return the persistent instance of the given entity class with the given identifier, obtaining the specified lock mode, assuming the instance exists.

        Convenient form of load(String, Serializable, LockOptions)

        Parameters:
        entityName - a persistent class
        id - a valid identifier of an existing persistent instance of the class
        lockMode - the lock level
        Returns:
        the persistent instance or proxy
        See Also:
        load(String, Serializable, LockOptions)

      • load

        java.lang.Object load​(java.lang.String entityName,
                      java.io.Serializable id,
                      LockOptions lockOptions)
        Return the persistent instance of the given entity class with the given identifier, obtaining the specified lock mode, assuming the instance exists.
        Parameters:
        entityName - a persistent class
        id - a valid identifier of an existing persistent instance of the class
        lockOptions - contains the lock level
        Returns:
        the persistent instance or proxy

      • load

        <T> T load​(java.lang.Class<T> theClass,
           java.io.Serializable id)
        Return the persistent instance of the given entity class with the given identifier, assuming that the instance exists. This method might return a proxied instance that is initialized on-demand, when a non-identifier method is accessed.

        You should not use this method to determine if an instance exists (use get() instead). Use this only to retrieve an instance that you assume exists, where non-existence would be an actual error.
        Parameters:
        theClass - a persistent class
        id - a valid identifier of an existing persistent instance of the class
        Returns:
        the persistent instance or proxy

      • load

        java.lang.Object load​(java.lang.String entityName,
                      java.io.Serializable id)
        Return the persistent instance of the given entity class with the given identifier, assuming that the instance exists. This method might return a proxied instance that is initialized on-demand, when a non-identifier method is accessed.

        You should not use this method to determine if an instance exists (use get() instead). Use this only to retrieve an instance that you assume exists, where non-existence would be an actual error.
        Parameters:
        entityName - a persistent class
        id - a valid identifier of an existing persistent instance of the class
        Returns:
        the persistent instance or proxy

      • load

        void load​(java.lang.Object object,
          java.io.Serializable id)
        Read the persistent state associated with the given identifier into the given transient instance.
        Parameters:
        object - an "empty" instance of the persistent class
        id - a valid identifier of an existing persistent instance of the class

      • replicate

        void replicate​(java.lang.Object object,
               ReplicationMode replicationMode)
        Persist the state of the given detached instance, reusing the current identifier value. This operation cascades to associated instances if the association is mapped with cascade="replicate"
        Parameters:
        object - a detached instance of a persistent class
        replicationMode - The replication mode to use

      • replicate

        void replicate​(java.lang.String entityName,
               java.lang.Object object,
               ReplicationMode replicationMode)
        Persist the state of the given detached instance, reusing the current identifier value. This operation cascades to associated instances if the association is mapped with cascade="replicate"
        Parameters:
        entityName - The entity name
        object - a detached instance of a persistent class
        replicationMode - The replication mode to use

      • save

        java.io.Serializable save​(java.lang.Object object)
        Persist the given transient instance, first assigning a generated identifier. (Or using the current value of the identifier property if the assigned generator is used.) This operation cascades to associated instances if the association is mapped with cascade="save-update"
        Parameters:
        object - a transient instance of a persistent class
        Returns:
        the generated identifier

      • save

        java.io.Serializable save​(java.lang.String entityName,
                          java.lang.Object object)
        Persist the given transient instance, first assigning a generated identifier. (Or using the current value of the identifier property if the assigned generator is used.) This operation cascades to associated instances if the association is mapped with cascade="save-update"
        Parameters:
        entityName - The entity name
        object - a transient instance of a persistent class
        Returns:
        the generated identifier

      • saveOrUpdate

        void saveOrUpdate​(java.lang.Object object)
        Either save(Object) or update(Object) the given instance, depending upon resolution of the unsaved-value checks (see the manual for discussion of unsaved-value checking).

        This operation cascades to associated instances if the association is mapped with cascade="save-update"

        Parameters:
        object - a transient or detached instance containing new or updated state
        See Also:
        save(java.lang.Object), update(Object object)

      • saveOrUpdate

        void saveOrUpdate​(java.lang.String entityName,
                  java.lang.Object object)
        Either save(String, Object) or update(String, Object) the given instance, depending upon resolution of the unsaved-value checks (see the manual for discussion of unsaved-value checking).

        This operation cascades to associated instances if the association is mapped with cascade="save-update"

        Parameters:
        entityName - The entity name
        object - a transient or detached instance containing new or updated state
        See Also:
        save(String,Object), update(String,Object)

      • update

        void update​(java.lang.Object object)
        Update the persistent instance with the identifier of the given detached instance. If there is a persistent instance with the same identifier, an exception is thrown. This operation cascades to associated instances if the association is mapped with cascade="save-update"
        Parameters:
        object - a detached instance containing updated state

      • update

        void update​(java.lang.String entityName,
            java.lang.Object object)
        Update the persistent instance with the identifier of the given detached instance. If there is a persistent instance with the same identifier, an exception is thrown. This operation cascades to associated instances if the association is mapped with cascade="save-update"
        Parameters:
        entityName - The entity name
        object - a detached instance containing updated state

      • merge

        java.lang.Object merge​(java.lang.Object object)
        Copy the state of the given object onto the persistent object with the same identifier. If there is no persistent instance currently associated with the session, it will be loaded. Return the persistent instance. If the given instance is unsaved, save a copy of and return it as a newly persistent instance. The given instance does not become associated with the session. This operation cascades to associated instances if the association is mapped with cascade="merge"

        The semantics of this method are defined by JSR-220.

        Specified by:
        merge in interface EntityManager
        Parameters:
        object - a detached instance with state to be copied
        Returns:
        an updated persistent instance

      • merge

        java.lang.Object merge​(java.lang.String entityName,
                       java.lang.Object object)
        Copy the state of the given object onto the persistent object with the same identifier. If there is no persistent instance currently associated with the session, it will be loaded. Return the persistent instance. If the given instance is unsaved, save a copy of and return it as a newly persistent instance. The given instance does not become associated with the session. This operation cascades to associated instances if the association is mapped with cascade="merge"

        The semantics of this method are defined by JSR-220.

        Parameters:
        entityName - The entity name
        object - a detached instance with state to be copied
        Returns:
        an updated persistent instance

      • persist

        void persist​(java.lang.Object object)
        Make a transient instance persistent. This operation cascades to associated instances if the association is mapped with cascade="persist"

        The semantics of this method are defined by JSR-220.

        Specified by:
        persist in interface EntityManager
        Parameters:
        object - a transient instance to be made persistent

      • persist

        void persist​(java.lang.String entityName,
             java.lang.Object object)
        Make a transient instance persistent. This operation cascades to associated instances if the association is mapped with cascade="persist"

        The semantics of this method are defined by JSR-220.

        Parameters:
        entityName - The entity name
        object - a transient instance to be made persistent

      • delete

        void delete​(java.lang.Object object)
        Remove a persistent instance from the datastore. The argument may be an instance associated with the receiving Session or a transient instance with an identifier associated with existing persistent state. This operation cascades to associated instances if the association is mapped with cascade="delete"
        Parameters:
        object - the instance to be removed

      • delete

        void delete​(java.lang.String entityName,
            java.lang.Object object)
        Remove a persistent instance from the datastore. The object argument may be an instance associated with the receiving Session or a transient instance with an identifier associated with existing persistent state. This operation cascades to associated instances if the association is mapped with cascade="delete"
        Parameters:
        entityName - The entity name for the instance to be removed.
        object - the instance to be removed

      • lock

        void lock​(java.lang.Object object,
          LockMode lockMode)
        Obtain the specified lock level upon the given object. This may be used to perform a version check (LockMode.READ), to upgrade to a pessimistic lock (LockMode.PESSIMISTIC_WRITE), or to simply reassociate a transient instance with a session (LockMode.NONE). This operation cascades to associated instances if the association is mapped with cascade="lock".

        Convenient form of Session.LockRequest.lock(Object) via buildLockRequest(LockOptions)

        Parameters:
        object - a persistent or transient instance
        lockMode - the lock level
        See Also:
        buildLockRequest(LockOptions), Session.LockRequest.lock(Object)

      • lock

        void lock​(java.lang.String entityName,
          java.lang.Object object,
          LockMode lockMode)
        Obtain the specified lock level upon the given object. This may be used to perform a version check (LockMode.OPTIMISTIC), to upgrade to a pessimistic lock (LockMode.PESSIMISTIC_WRITE), or to simply reassociate a transient instance with a session (LockMode.NONE). This operation cascades to associated instances if the association is mapped with cascade="lock".

        Convenient form of Session.LockRequest.lock(String, Object) via buildLockRequest(LockOptions)

        Parameters:
        entityName - The name of the entity
        object - a persistent or transient instance
        lockMode - the lock level
        See Also:
        buildLockRequest(LockOptions), Session.LockRequest.lock(String, Object)

      • buildLockRequest

        Session.LockRequest buildLockRequest​(LockOptions lockOptions)
        Build a LockRequest that specifies the LockMode, pessimistic lock timeout and lock scope. timeout and scope is ignored for optimistic locking. After building the LockRequest, call LockRequest.lock to perform the requested locking.

        Example usage: session.buildLockRequest().setLockMode(LockMode.PESSIMISTIC_WRITE).setTimeOut(60000).lock(entity);

        Parameters:
        lockOptions - contains the lock level
        Returns:
        a lockRequest that can be used to lock the passed object.

      • refresh

        void refresh​(java.lang.Object object)
        Re-read the state of the given instance from the underlying database. It is inadvisable to use this to implement long-running sessions that span many business tasks. This method is, however, useful in certain special circumstances. For example
        • where a database trigger alters the object state upon insert or update
        • after executing direct SQL (eg. a mass update) in the same session
        • after inserting a Blob or Clob
        Specified by:
        refresh in interface EntityManager
        Parameters:
        object - a persistent or detached instance

      • refresh

        void refresh​(java.lang.String entityName,
             java.lang.Object object)
        Re-read the state of the given instance from the underlying database. It is inadvisable to use this to implement long-running sessions that span many business tasks. This method is, however, useful in certain special circumstances. For example
        • where a database trigger alters the object state upon insert or update
        • after executing direct SQL (eg. a mass update) in the same session
        • after inserting a Blob or Clob
        Parameters:
        entityName - a persistent class
        object - a persistent or detached instance

      • refresh

        void refresh​(java.lang.Object object,
             LockMode lockMode)
        Re-read the state of the given instance from the underlying database, with the given LockMode. It is inadvisable to use this to implement long-running sessions that span many business tasks. This method is, however, useful in certain special circumstances.

        Convenient form of refresh(Object, LockOptions)

        Parameters:
        object - a persistent or detached instance
        lockMode - the lock mode to use
        See Also:
        refresh(Object, LockOptions)

      • refresh

        void refresh​(java.lang.Object object,
             LockOptions lockOptions)
        Re-read the state of the given instance from the underlying database, with the given LockMode. It is inadvisable to use this to implement long-running sessions that span many business tasks. This method is, however, useful in certain special circumstances.
        Parameters:
        object - a persistent or detached instance
        lockOptions - contains the lock mode to use

      • refresh

        void refresh​(java.lang.String entityName,
             java.lang.Object object,
             LockOptions lockOptions)
        Re-read the state of the given instance from the underlying database, with the given LockMode. It is inadvisable to use this to implement long-running sessions that span many business tasks. This method is, however, useful in certain special circumstances.
        Parameters:
        entityName - a persistent class
        object - a persistent or detached instance
        lockOptions - contains the lock mode to use

      • getCurrentLockMode

        LockMode getCurrentLockMode​(java.lang.Object object)
        Determine the current lock mode of the given object.
        Parameters:
        object - a persistent instance
        Returns:
        the current lock mode

      • createFilter

        @Deprecated
Query createFilter​(java.lang.Object collection,
                   java.lang.String queryString)
        Deprecated.
        (since 5.3) with no real replacement.
        Create a Query instance for the given collection and filter string. Contains an implicit FROM element named this which refers to the defined table for the collection elements, as well as an implicit WHERE restriction for this particular collection instance's key value.
        Parameters:
        collection - a persistent collection
        queryString - a Hibernate query fragment.
        Returns:
        The query instance for manipulation and execution

      • clear

        void clear()
        Completely clear the session. Evict all loaded instances and cancel all pending saves, updates and deletions. Do not close open iterators or instances of ScrollableResults.
        Specified by:
        clear in interface EntityManager

      • get

        <T> T get​(java.lang.Class<T> entityType,
          java.io.Serializable id)
        Return the persistent instance of the given entity class with the given identifier, or null if there is no such persistent instance. (If the instance is already associated with the session, return that instance. This method never returns an uninitialized instance.)
        Parameters:
        entityType - The entity type
        id - an identifier
        Returns:
        a persistent instance or null

      • get

        <T> T get​(java.lang.Class<T> entityType,
          java.io.Serializable id,
          LockMode lockMode)
        Return the persistent instance of the given entity class with the given identifier, or null if there is no such persistent instance. (If the instance is already associated with the session, return that instance. This method never returns an uninitialized instance.) Obtain the specified lock mode if the instance exists.

        Convenient form of get(Class, Serializable, LockOptions)

        Parameters:
        entityType - The entity type
        id - an identifier
        lockMode - the lock mode
        Returns:
        a persistent instance or null
        See Also:
        get(Class, Serializable, LockOptions)

      • get

        <T> T get​(java.lang.Class<T> entityType,
          java.io.Serializable id,
          LockOptions lockOptions)
        Return the persistent instance of the given entity class with the given identifier, or null if there is no such persistent instance. (If the instance is already associated with the session, return that instance. This method never returns an uninitialized instance.) Obtain the specified lock mode if the instance exists.
        Parameters:
        entityType - The entity type
        id - an identifier
        lockOptions - the lock mode
        Returns:
        a persistent instance or null

      • get

        java.lang.Object get​(java.lang.String entityName,
                     java.io.Serializable id)
        Return the persistent instance of the given named entity with the given identifier, or null if there is no such persistent instance. (If the instance is already associated with the session, return that instance. This method never returns an uninitialized instance.)
        Parameters:
        entityName - the entity name
        id - an identifier
        Returns:
        a persistent instance or null

      • get

        java.lang.Object get​(java.lang.String entityName,
                     java.io.Serializable id,
                     LockMode lockMode)
        Return the persistent instance of the given entity class with the given identifier, or null if there is no such persistent instance. (If the instance is already associated with the session, return that instance. This method never returns an uninitialized instance.) Obtain the specified lock mode if the instance exists.

        Convenient form of get(String, Serializable, LockOptions)

        Parameters:
        entityName - the entity name
        id - an identifier
        lockMode - the lock mode
        Returns:
        a persistent instance or null
        See Also:
        get(String, Serializable, LockOptions)

      • get

        java.lang.Object get​(java.lang.String entityName,
                     java.io.Serializable id,
                     LockOptions lockOptions)
        Return the persistent instance of the given entity class with the given identifier, or null if there is no such persistent instance. (If the instance is already associated with the session, return that instance. This method never returns an uninitialized instance.) Obtain the specified lock mode if the instance exists.
        Parameters:
        entityName - the entity name
        id - an identifier
        lockOptions - contains the lock mode
        Returns:
        a persistent instance or null

      • getEntityName

        java.lang.String getEntityName​(java.lang.Object object)
        Return the entity name for a persistent entity.
        Parameters:
        object - a persistent entity
        Returns:
        the entity name

      • getReference

        default <T> T getReference​(T object)
        Return a reference to the persistent instance with the same identity as the given instance, which might be detached, making the assumption that the instance is still persistent in the database. This method never results in access to the underlying data store, and thus might return a proxy that is initialized on-demand, when a non-identifier method is accessed.
        Parameters:
        object - a detached persistent instance
        Returns:
        the persistent instance or proxy

      • byId

        IdentifierLoadAccess byId​(java.lang.String entityName)
        Create an IdentifierLoadAccess instance to retrieve the specified entity type by primary key.
        Parameters:
        entityName - The entity name of the entity type to be retrieved
        Returns:
        load delegate for loading the specified entity type by primary key
        Throws:
        HibernateException - If the specified entity name cannot be resolved as an entity name

      • byMultipleIds

        <T> MultiIdentifierLoadAccess<T> byMultipleIds​(java.lang.Class<T> entityClass)
        Create a MultiIdentifierLoadAccess instance to retrieve multiple entities at once as specified by primary key values.
        Parameters:
        entityClass - The entity type to be retrieved
        Returns:
        load delegate for loading the specified entity type by primary key values
        Throws:
        HibernateException - If the specified Class cannot be resolved as a mapped entity

      • byMultipleIds

        MultiIdentifierLoadAccess byMultipleIds​(java.lang.String entityName)
        Create a MultiIdentifierLoadAccess instance to retrieve multiple entities at once as specified by primary key values.
        Parameters:
        entityName - The entity name of the entity type to be retrieved
        Returns:
        load delegate for loading the specified entity type by primary key values
        Throws:
        HibernateException - If the specified entity name cannot be resolved as an entity name

      • byId

        <T> IdentifierLoadAccess<T> byId​(java.lang.Class<T> entityClass)
        Create an IdentifierLoadAccess instance to retrieve the specified entity by primary key.
        Parameters:
        entityClass - The entity type to be retrieved
        Returns:
        load delegate for loading the specified entity type by primary key
        Throws:
        HibernateException - If the specified Class cannot be resolved as a mapped entity

      • byNaturalId

        NaturalIdLoadAccess byNaturalId​(java.lang.String entityName)
        Create a NaturalIdLoadAccess instance to retrieve the specified entity by its natural id.
        Parameters:
        entityName - The entity name of the entity type to be retrieved
        Returns:
        load delegate for loading the specified entity type by natural id
        Throws:
        HibernateException - If the specified entity name cannot be resolved as an entity name

      • byNaturalId

        <T> NaturalIdLoadAccess<T> byNaturalId​(java.lang.Class<T> entityClass)
        Create a NaturalIdLoadAccess instance to retrieve the specified entity by its natural id.
        Parameters:
        entityClass - The entity type to be retrieved
        Returns:
        load delegate for loading the specified entity type by natural id
        Throws:
        HibernateException - If the specified Class cannot be resolved as a mapped entity

      • bySimpleNaturalId

        SimpleNaturalIdLoadAccess bySimpleNaturalId​(java.lang.String entityName)
        Create a SimpleNaturalIdLoadAccess instance to retrieve the specified entity by its natural id.
        Parameters:
        entityName - The entity name of the entity type to be retrieved
        Returns:
        load delegate for loading the specified entity type by natural id
        Throws:
        HibernateException - If the specified entityClass cannot be resolved as a mapped entity, or if the entity does not define a natural-id or if its natural-id is made up of multiple attributes.

      • bySimpleNaturalId

        <T> SimpleNaturalIdLoadAccess<T> bySimpleNaturalId​(java.lang.Class<T> entityClass)
        Create a SimpleNaturalIdLoadAccess instance to retrieve the specified entity by its simple (single attribute) natural id.
        Parameters:
        entityClass - The entity type to be retrieved
        Returns:
        load delegate for loading the specified entity type by natural id
        Throws:
        HibernateException - If the specified entityClass cannot be resolved as a mapped entity, or if the entity does not define a natural-id or if its natural-id is made up of multiple attributes.

      • enableFilter

        Filter enableFilter​(java.lang.String filterName)
        Enable the named filter for this current session.
        Parameters:
        filterName - The name of the filter to be enabled.
        Returns:
        The Filter instance representing the enabled filter.

      • getEnabledFilter

        Filter getEnabledFilter​(java.lang.String filterName)
        Retrieve a currently enabled filter by name.
        Parameters:
        filterName - The name of the filter to be retrieved.
        Returns:
        The Filter instance representing the enabled filter.

      • disableFilter

        void disableFilter​(java.lang.String filterName)
        Disable the named filter for the current session.
        Parameters:
        filterName - The name of the filter to be disabled.

      • getStatistics

        SessionStatistics getStatistics()
        Get the statistics for this session.
        Returns:
        The session statistics being collected for this session

      • isReadOnly

        boolean isReadOnly​(java.lang.Object entityOrProxy)
        Is the specified entity or proxy read-only? To get the default read-only/modifiable setting used for entities and proxies that are loaded into the session:
        Parameters:
        entityOrProxy - an entity or HibernateProxy
        Returns:
        true if the entity or proxy is read-only, false if the entity or proxy is modifiable.
        See Also:
        isDefaultReadOnly()

      • setReadOnly

        void setReadOnly​(java.lang.Object entityOrProxy,
                 boolean readOnly)
        Set an unmodified persistent object to read-only mode, or a read-only object to modifiable mode. In read-only mode, no snapshot is maintained, the instance is never dirty checked, and changes are not persisted. If the entity or proxy already has the specified read-only/modifiable setting, then this method does nothing. To set the default read-only/modifiable setting used for entities and proxies that are loaded into the session:
        Parameters:
        entityOrProxy - an entity or HibernateProxy
        readOnly - true if the entity or proxy should be made read-only; false if the entity or proxy should be made modifiable
        See Also:
        To override this session's read-only/modifiable setting for entities and proxies loaded by a Query:, Query.setReadOnly(boolean)

      • disconnect

        java.sql.Connection disconnect()
        Disconnect the session from its underlying JDBC connection. This is intended for use in cases where the application has supplied the JDBC connection to the session and which require long-sessions (aka, conversations).

        It is considered an error to call this method on a session which was not opened by supplying the JDBC connection and an exception will be thrown.

        For non-user-supplied scenarios, normal transaction management already handles disconnection and reconnection automatically.

        Returns:
        the application-supplied connection or null
        See Also:
        reconnect(Connection)

      • reconnect

        void reconnect​(java.sql.Connection connection)
        Reconnect to the given JDBC connection.
        Parameters:
        connection - a JDBC connection
        See Also:
        disconnect()

      • isFetchProfileEnabled

        boolean isFetchProfileEnabled​(java.lang.String name)
                       throws UnknownProfileException
        Is a particular fetch profile enabled on this session?
        Parameters:
        name - The name of the profile to be checked.
        Returns:
        True if fetch profile is enabled; false if not.
        Throws:
        UnknownProfileException - Indicates that the given name does not match any known profile names
        See Also:
        for discussion of this feature

      • enableFetchProfile

        void enableFetchProfile​(java.lang.String name)
                 throws UnknownProfileException
        Enable a particular fetch profile on this session. No-op if requested profile is already enabled.
        Parameters:
        name - The name of the fetch profile to be enabled.
        Throws:
        UnknownProfileException - Indicates that the given name does not match any known profile names
        See Also:
        for discussion of this feature

      • disableFetchProfile

        void disableFetchProfile​(java.lang.String name)
                  throws UnknownProfileException
        Disable a particular fetch profile on this session. No-op if requested profile is already disabled.
        Parameters:
        name - The name of the fetch profile to be disabled.
        Throws:
        UnknownProfileException - Indicates that the given name does not match any known profile names
        See Also:
        for discussion of this feature

      • getLobHelper

        LobHelper getLobHelper()
        Retrieve this session's helper/delegate for creating LOB instances.
        Returns:
        This session's LOB helper

      • addEventListeners

        void addEventListeners​(SessionEventListener... listeners)
        Add one or more listeners to the Session
        Parameters:
        listeners - The listener(s) to add

      • createNamedQuery

        <T> Query<T> createNamedQuery​(java.lang.String name,
                              java.lang.Class<T> resultType)
        Description copied from interface: QueryProducer
        The JPA-defined named, typed query creation method. This form can only represent an HQL/JPQL query (not a native query).
        Specified by:
        createNamedQuery in interface EntityManager
        Specified by:
        createNamedQuery in interface QueryProducer
        Parameters:
        name - the name of a query defined in metadata
        resultType - the type of the query result
        Returns:
        The Query instance for manipulation and execution
        See Also:
        EntityManager.createNamedQuery(String,Class)