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public interface Integrator {
    public void prepareServices(ServiceRegistryBuilder serviceRegistryBuilder);

    public void prepareMetadata(MetadataImplementor metadata);

    public void integrate(
            MetadataImplementor metadata,
            SessionFactoryImplementor sessionFactory,
            SessionFactoryServiceRegistry serviceRegistry);

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interface EntityLoadAccess<T> {
    public T getReference(Object key);
    public T getReference(Object key, LockOptions lockOptions);
    public T load(Object key);
    public T load(Object key, LockOptions lockOptions);
}

session.entityLoadAccess( SomeEntity.class ).byId().getReference( 123 )

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interface EntityLoadAccess<T> {
    public T getReferenceById(Object id);
    public T getReferenceById(Object id, LockOptions lockOptions);
    public T getReferenceByNaturalKey(Object key);
    public T getReferenceByNaturalKey(Object key, LockOptions lockOptions);
    public T loadById(Object id);
    public T loadById(Object id, LockOptions lockOptions);
    public T loadByNaturalKey(Object key);
    public T loadByNaturalKey(Object key, LockOptions lockOptions);
}

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/**
 * Specifically access by id
 */
interface IdentifierLoadAccess<T> {
    public IdentifierLoadAccess<T> with(LockOptions lockOptions);

    public T getReference(Object id);
    public T load(Object id);
}

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public interface JdbcCoordinator extends Serializable {
    /**
     * Set the effective transaction timeout period for the current transaction, in seconds.
     * 
     * NOTE : Same signature, just added javadocs...
     */
    public void setTransactionTimeOut(int seconds);

    /**
     * Retrieve the amount of time, in seconds, still remaining before transaction timeout occurs.

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		try {
			try {
				PreparedStatement st = session.getTransactionCoordinator().getJdbcCoordinator().getStatementPreparer().prepareStatement( sql );
				try {
					getLockable().getIdentifierType().nullSafeSet( st, id, 1, session );
					if ( getLockable().isVersioned() ) {
						getLockable().getVersionType().nullSafeSet(
								st,
								version,
								getLockable().getIdentifierType().getColumnSpan( factory ) + 1,

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logicalExpression
    : logicalOrExpression
    ;

logicalOrExpression
    : logicalAndExpression ( or^ logicalAndExpression )*
    ;

logicalAndExpression
    : negatedExpression ( and^ negatedExpression )*

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The Hibernate team is pleased to announce the release of Hibernate Core 4.0.0.Final.  A lot of time and effort from many people went into this release, so thank you everyone involved!

++ What's new?

A lot of things; too many to list here.  But here is a list of the major improvements done in 4.0:

# Initial multi-tenancy support.  See [=>http://in.relation.to/Bloggers/HibernateAndMultitenancyWebinar] and [=>http://in.relation.to/Bloggers/MultitenancyInHibernate] for more information.
# Introduction of ServiceRegistry.  This is a major change in how Hibernate builds and manages "services".  See the information in the *Hibernate Developer Guide*.
# Clean up of Session opening from SessionFactory
# Improved integration via org.hibernate.integrator.spi.Integrator and auto discovery

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Caused by: javax.xml.stream.XMLStreamException: org.xml.sax.SAXParseException; lineNumber: 7; columnNumber: 10; cvc-complex-type.2.4.a: Invalid content was found starting with element 'entity-mappings'. One of '{"http://java.sun.com/xml/ns/persistence/orm":description, "http://java.sun.com/xml/ns/persistence/orm":persistence-unit-metadata, "http://java.sun.com/xml/ns/persistence/orm":package, "http://java.sun.com/xml/ns/persistence/orm":schema, "http://java.sun.com/xml/ns/persistence/orm":catalog, "http://java.sun.com/xml/ns/persistence/orm":access, "http://java.sun.com/xml/ns/persistence/orm":sequence-generator, "http://java.sun.com/xml/ns/persistence/orm":table-generator, "http://java.sun.com/xml/ns/persistence/orm":named-query, "http://java.sun.com/xml/ns/persistence/orm":named-native-query, "http://java.sun.com/xml/ns/persistence/orm":sql-result-set-mapping, "http://java.sun.com/xml/ns/persistence/orm":mapped-superclass, "http://java.sun.com/xml/ns/persistence/orm":entity, "http://java.sun.com/xml/ns/pers

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public class NamedQueryRepository {
	/**
	 * Defines allowable policies for handling attempts to mutate a repository after initialization
	 */
	public static enum MutationPolicy {
		/**
		 * Allow attempts to mutate the repository after it has been initialized.
		 */
		ALLOW,
		/**