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Hibernate example source code file (RootEntitySourceImpl.java)

This example Hibernate source code file (RootEntitySourceImpl.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Hibernate tags/keywords

discriminatorsource, file, file, formulaimpl, idgenerator, idgenerator, mappingexception, override, override, rootentitysourceimpl, singularattributesource, string, string, tablesource, util

The Hibernate RootEntitySourceImpl.java source code

/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2011, 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.metamodel.source.hbm;

import java.util.Iterator;

import org.hibernate.EntityMode;
import org.hibernate.cache.spi.access.AccessType;
import org.hibernate.engine.OptimisticLockStyle;
import org.hibernate.internal.util.StringHelper;
import org.hibernate.metamodel.binding.Caching;
import org.hibernate.metamodel.binding.IdGenerator;
import org.hibernate.metamodel.source.MappingException;
import org.hibernate.metamodel.source.binder.DiscriminatorSource;
import org.hibernate.metamodel.source.binder.IdentifierSource;
import org.hibernate.metamodel.source.binder.RelationalValueSource;
import org.hibernate.metamodel.source.binder.RootEntitySource;
import org.hibernate.metamodel.source.binder.SimpleIdentifierSource;
import org.hibernate.metamodel.source.binder.SingularAttributeSource;
import org.hibernate.metamodel.source.binder.TableSource;
import org.hibernate.metamodel.source.hbm.jaxb.mapping.XMLCacheElement;
import org.hibernate.metamodel.source.hbm.jaxb.mapping.XMLHibernateMapping;

/**
 * @author Steve Ebersole
 */
public class RootEntitySourceImpl extends AbstractEntitySourceImpl implements RootEntitySource {
	protected RootEntitySourceImpl(MappingDocument sourceMappingDocument, XMLHibernateMapping.XMLClass entityElement) {
		super( sourceMappingDocument, entityElement );
	}

	@Override
	protected XMLHibernateMapping.XMLClass entityElement() {
		return (XMLHibernateMapping.XMLClass) super.entityElement();
	}

	@Override
	public IdentifierSource getIdentifierSource() {
		if ( entityElement().getId() != null ) {
			return new SimpleIdentifierSource() {
				@Override
				public SingularAttributeSource getIdentifierAttributeSource() {
					return new SingularIdentifierAttributeSourceImpl(
							entityElement().getId(),
							sourceMappingDocument().getMappingLocalBindingContext()
					);
				}

				@Override
				public IdGenerator getIdentifierGeneratorDescriptor() {
					if ( entityElement().getId().getGenerator() != null ) {
						final String generatorName = entityElement().getId().getGenerator().getClazz();
						IdGenerator idGenerator = sourceMappingDocument().getMappingLocalBindingContext()
								.getMetadataImplementor()
								.getIdGenerator( generatorName );
						if ( idGenerator == null ) {
							idGenerator = new IdGenerator(
									getEntityName() + generatorName,
									generatorName,
									Helper.extractParameters( entityElement().getId().getGenerator().getParam() )
							);
						}
						return idGenerator;
					}
					return null;
				}

				@Override
				public Nature getNature() {
					return Nature.SIMPLE;
				}
			};
		}
		return null;  //To change body of implemented methods use File | Settings | File Templates.
	}

	@Override
	public SingularAttributeSource getVersioningAttributeSource() {
		if ( entityElement().getVersion() != null ) {
			return new VersionAttributeSourceImpl(
					entityElement().getVersion(),
					sourceMappingDocument().getMappingLocalBindingContext()
			);
		}
		else if ( entityElement().getTimestamp() != null ) {
			return new TimestampAttributeSourceImpl(
					entityElement().getTimestamp(),
					sourceMappingDocument().getMappingLocalBindingContext()
			);
		}
		return null;
	}

	@Override
	public EntityMode getEntityMode() {
		return determineEntityMode();
	}

	@Override
	public boolean isMutable() {
		return entityElement().isMutable();
	}


	@Override
	public boolean isExplicitPolymorphism() {
		return "explicit".equals( entityElement().getPolymorphism() );
	}

	@Override
	public String getWhere() {
		return entityElement().getWhere();
	}

	@Override
	public String getRowId() {
		return entityElement().getRowid();
	}

	@Override
	public OptimisticLockStyle getOptimisticLockStyle() {
		final String optimisticLockModeString = Helper.getStringValue( entityElement().getOptimisticLock(), "version" );
		try {
			return OptimisticLockStyle.valueOf( optimisticLockModeString.toUpperCase() );
		}
		catch ( Exception e ) {
			throw new MappingException(
					"Unknown optimistic-lock value : " + optimisticLockModeString,
					sourceMappingDocument().getOrigin()
			);
		}
	}

	@Override
	public Caching getCaching() {
		final XMLCacheElement cache = entityElement().getCache();
		if ( cache == null ) {
			return null;
		}
		final String region = cache.getRegion() != null ? cache.getRegion() : getEntityName();
		final AccessType accessType = Enum.valueOf( AccessType.class, cache.getUsage() );
		final boolean cacheLazyProps = !"non-lazy".equals( cache.getInclude() );
		return new Caching( region, accessType, cacheLazyProps );
	}

	@Override
	public TableSource getPrimaryTable() {
		return new TableSource() {
			@Override
			public String getExplicitSchemaName() {
				return entityElement().getSchema();
			}

			@Override
			public String getExplicitCatalogName() {
				return entityElement().getCatalog();
			}

			@Override
			public String getExplicitTableName() {
				return entityElement().getTable();
			}

			@Override
			public String getLogicalName() {
				// logical name for the primary table is null
				return null;
			}
		};
	}

	@Override
	public String getDiscriminatorMatchValue() {
		return entityElement().getDiscriminatorValue();
	}

	@Override
	public DiscriminatorSource getDiscriminatorSource() {
		final XMLHibernateMapping.XMLClass.XMLDiscriminator discriminatorElement = entityElement().getDiscriminator();
		if ( discriminatorElement == null ) {
			return null;
		}

		return new DiscriminatorSource() {
			@Override
			public RelationalValueSource getDiscriminatorRelationalValueSource() {
				if ( StringHelper.isNotEmpty( discriminatorElement.getColumnAttribute() ) ) {
					return new ColumnAttributeSourceImpl(
							null, // root table
							discriminatorElement.getColumnAttribute(),
							discriminatorElement.isInsert(),
							discriminatorElement.isInsert()
					);
				}
				else if ( StringHelper.isNotEmpty( discriminatorElement.getFormulaAttribute() ) ) {
					return new FormulaImpl( null, discriminatorElement.getFormulaAttribute() );
				}
				else if ( discriminatorElement.getColumn() != null ) {
					return new ColumnSourceImpl(
							null, // root table
							discriminatorElement.getColumn(),
							discriminatorElement.isInsert(),
							discriminatorElement.isInsert()
					);
				}
				else if ( StringHelper.isNotEmpty( discriminatorElement.getFormula() ) ) {
					return new FormulaImpl( null, discriminatorElement.getFormula() );
				}
				else {
					throw new MappingException( "could not determine source of discriminator mapping", getOrigin() );
				}
			}

			@Override
			public String getExplicitHibernateTypeName() {
				return discriminatorElement.getType();
			}

			@Override
			public boolean isForced() {
				return discriminatorElement.isForce();
			}

			@Override
			public boolean isInserted() {
				return discriminatorElement.isInsert();
			}
		};
	}
}

Other Hibernate examples (source code examples)

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