Examples of EntityManager

com.cloud.utils.db.EntityManager
Generic Entity Manager to retrieve database objects.
com.echoeight.bison.entity.EntityManager
com.l2client.controller.entity.EntityManager
Singleton which manages entities, components and queries around them. @see ComponentSystem
com.pointcliki.core.EntityManager
The EntityManager is a global tracker of Entities that allows classes to always maintain a way of accessing the correct versions of entities in the game. Because entities are cloned when they are saved, it may be difficult to ensure that references to entities are kept up to date, so they should instead use an EntityQuery which automatically retrieves the latest entity if an older or different game state is loaded. An entity has an ID which is unique to that entity for the duration it is attached to a scene. When an entity changes scene, it is re-registered so that the entity can be restored in its previous scene if that scene loads an older game state where the entity was still parented to that scene. @see EntityQuery @author hugheth @since 1
com.teamjmonkey.entity.EntityManager
games.stendhal.server.core.rule.EntityManager
Ruleset Interface for resolving Entities in Stendhal. @author Matthias Totz
gwlpr.mapshard.entitysystem.EntityManager
b.com/adamgit/Entity-System-RDBMS-Beta--Java- @author _rusty
javax.persistence.EntityManager
Interface used to interact with the persistence context. An EntityManager instance is associated with a persistence context. A persistence context is a set of entity instances in which for any persistent entity identity there is a unique entity instance. Within the persistence context, the entity instances and their lifecycle are managed. This interface defines the methods that are used to interact with the persistence context. The EntityManager API is used to create and remove persistent entity instances, to find entities by their primary key, and to query over entities. The set of entities that can be managed by a given EntityManager instance is defined by a persistence unit. A persistence unit defines the set of all classes that are related or grouped by the application, and which must be colocated in their mapping to a single database. @author Emmanuel Bernard
m33.entities.EntityManager
org.terasology.entitySystem.entity.EntityManager
@author Immortius
quickdb.reflection.EntityManager
@author Diego Sarmentero

Examples of javax.persistence.EntityManager


    /**
     * Verifies if the serRollbackOnly works.
     */
    public void setRollbackOnly() {
        EntityManager entityManager = entityManagerFactory.createEntityManager();
        // begins the transaction and sets the rollbackonly
        entityManager.getTransaction().begin();
        entityManager.getTransaction().setRollbackOnly();
        // creates a book
        Book book = new Book();
        book.setId(ID);
        book.setName(ENTITY_NAME);
        entityManager.persist(book);
        // verifies if the container registered the rollback.
        assertTrue(entityManager.getTransaction().getRollbackOnly(),
                "The transaction is marked as rollback, but the container returned false for the method getRollbackOnly()");


        // tries to make the commit, the container must throw an exception.
        try {
            entityManager.getTransaction().commit();
            fail("The method setRollbackOnly was called, so the transaction cannot make the commit.");
        } catch (RollbackException e) {
            logger.info("The bean threw an expected exception");
        }
        entityManager.close();


        // verifies if the transaction was rolled back
        Book bookResult = entityManager.find(Book.class, new Integer(ID));
        assertNull(bookResult, "The container did not make the rollback");
    }

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Examples of javax.persistence.EntityManager


    /**
     * Verifies if the commit works.
     */
    public void resourceLevelCommit() {
        EntityManager entityManager = entityManagerFactory.createEntityManager();
        // begins the trasnaction
        entityManager.getTransaction().begin();
        // inserts a book
        Book book = new Book();
        book.setId(ID);
        book.setName(ENTITY_NAME);
        entityManager.persist(book);
        // verifies if the transaction is marked as ACTIVE
        assertTrue(entityManager.getTransaction().isActive(),
                "The transaction is active, but the container returned false when the method isActive was called.");
        // verify if the rollbackonly is not set.
        assertFalse(entityManager.getTransaction().getRollbackOnly(),
                "The transaction is not marked as rollback, but the container returned true for the method getRollbackOnly()");
        // makes a commit
        entityManager.getTransaction().commit();
        entityManager.close();
        // verifies if the bean is persistent.
        Book bookResult = entityManager.find(Book.class, new Integer(ID));
        assertNotNull(bookResult, "The container did not make the rollback");


    }

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Examples of javax.persistence.EntityManager

                logger.debug("Error in EntityManagerFactory use: {0}", e);
                e.printStackTrace();
            }


        } else if (isEqual(ENTITY_MANAGER, op)) {
            EntityManager em = (EntityManager) ctx.lookup("persistence/pctx01");
            try {
                EntityManagerTester.checkInstance(em, "tmpTable" + this.hashCode());
                log(getName(), TIMEOUT, getName(), ENTITY_MANAGER);
            } catch (Exception e) {
                logger.debug("Error in EntityManagerFactory use: {0}", e);

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Examples of javax.persistence.EntityManager




        } else if (ic.getMethod().toString().contains("accessEntityManagerFactory")) {


            //EntityManagerFactory Access
            EntityManager entityManager = entityFactory.createEntityManager();
            entityManager.getTransaction().begin();
            checkInstance(entityManager, EMFactoryTester.NAME);
            entityManager.getTransaction().commit();


        } else if (ic.getMethod().toString().contains("accessSessionContext")) {


            //SessionContext Access
            if (ctx == null){

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Examples of javax.persistence.EntityManager

     * Creates the EntityManagerFactory and cleans the db.
     */
    public ResourceLevelTransTester() {
        // gets the EntitymanagerFactory for the persistence unite book
        entityManagerFactory = Persistence.createEntityManagerFactory("book");
        EntityManager entityManager = entityManagerFactory.createEntityManager();


        Book bookResult = entityManager.find(Book.class, new Integer(ID));
        if (bookResult != null) {
            entityManager.remove(bookResult);
        }
    }

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Examples of javax.persistence.EntityManager


    /**
     * Verifies if the rollback works.
     */
    public void resourceLevelRollback() {
        EntityManager entityManager = entityManagerFactory.createEntityManager();
        // begins the transaction
        entityManager.getTransaction().begin();
        // creates a book
        Book book = new Book();
        book.setId(ID);
        book.setName(ENTITY_NAME);
        entityManager.persist(book);
        // makes a rollback
        entityManager.getTransaction().rollback();
        entityManager.close();
        // verifies if the container made the rollback
        Book bookResult = entityManager.find(Book.class, new Integer(ID));
        assertNull(bookResult, "The container did not make the rollback");
    }

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Examples of javax.persistence.EntityManager


    /**
     * Verifies if the serRollbackOnly works.
     */
    public void setRollbackOnly() {
        EntityManager entityManager = entityManagerFactory.createEntityManager();
        // begins the transaction and sets the rollbackonly
        entityManager.getTransaction().begin();
        entityManager.getTransaction().setRollbackOnly();
        // creates a book
        Book book = new Book();
        book.setId(ID);
        book.setName(ENTITY_NAME);
        entityManager.persist(book);
        // verifies if the container registered the rollback.
        assertTrue(entityManager.getTransaction().getRollbackOnly(),
                "The transaction is marked as rollback, but the container returned false for the method getRollbackOnly()");


        // tries to make the commit, the container must throw an exception.
        try {
            entityManager.getTransaction().commit();
            fail("The method setRollbackOnly was called, so the transaction cannot make the commit.");
        } catch (RollbackException e) {
            logger.info("The bean threw an expected exception");
        }
        entityManager.close();


        // verifies if the transaction was rolled back
        Book bookResult = entityManager.find(Book.class, new Integer(ID));
        assertNull(bookResult, "The container did not make the rollback");
    }

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Examples of javax.persistence.EntityManager


    /**
     * Verifies if the commit works.
     */
    public void resourceLevelCommit() {
        EntityManager entityManager = entityManagerFactory.createEntityManager();
        // begins the trasnaction
        entityManager.getTransaction().begin();
        // inserts a book
        Book book = new Book();
        book.setId(ID);
        book.setName(ENTITY_NAME);
        entityManager.persist(book);
        // verifies if the transaction is marked as ACTIVE
        assertTrue(entityManager.getTransaction().isActive(),
                "The transaction is active, but the container returned false when the method isActive was called.");
        // verify if the rollbackonly is not set.
        assertFalse(entityManager.getTransaction().getRollbackOnly(),
                "The transaction is not marked as rollback, but the container returned true for the method getRollbackOnly()");
        // makes a commit
        entityManager.getTransaction().commit();
        entityManager.close();
        // verifies if the bean is persistent.
        Book bookResult = entityManager.find(Book.class, new Integer(ID));
        assertNotNull(bookResult, "The container did not make the rollback");


    }

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Examples of javax.persistence.EntityManager

     * @param ref Entity Manager Factory
     * @param name row name
     * @throws Exception if a problem occurs
     */
    public static void checkInstance(final EntityManagerFactory ref, final String name) throws Exception {
        EntityManager entityManager = ref.createEntityManager();
        logger.debug("Checking an entity manager factory reference.");


        if (entityManager == null) {
            logger.debug("The method createEntityManager() returned null.");
            throw new IllegalStateException("Error checking an entity manager factory reference.");

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Examples of javax.persistence.EntityManager

      {
         ut.begin();
         try
         {
            InitialContext ctx = new InitialContext();
            EntityManager em = (EntityManager) ctx.lookup("java:comp/env/persistence/em");
            
            String mode = req.getParameter("mode");
            if ("Write".equals(mode))
            {
               TestEntity test = new TestEntity("Hello", "World");
               em.persist(test);
            }
            else
            {
               TestEntity test = em.find(TestEntity.class, "Hello");
               resp.setContentType("text/plain");
               PrintWriter out = resp.getWriter();
               out.print(test.getDescription());
               out.close();
            }

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