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Hibernate example source code file (AbstractPluralAttributeSourceImpl.java)

This example Hibernate source code file (AbstractPluralAttributeSourceImpl.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

attributesourcecontainer, customsql, customsql, explicithibernatetypesource, explicithibernatetypesource, mappingexception, override, override, pluralattributeelement, pluralattributeelementsource, pluralattributekeysource, string, string, unexpected, util

The Hibernate AbstractPluralAttributeSourceImpl.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.Collections;
import java.util.Map;

import org.hibernate.FetchMode;
import org.hibernate.cache.spi.access.AccessType;
import org.hibernate.cfg.NotYetImplementedException;
import org.hibernate.engine.FetchStyle;
import org.hibernate.engine.FetchTiming;
import org.hibernate.engine.spi.CascadeStyle;
import org.hibernate.internal.util.StringHelper;
import org.hibernate.metamodel.binding.Caching;
import org.hibernate.metamodel.binding.CustomSQL;
import org.hibernate.metamodel.source.LocalBindingContext;
import org.hibernate.metamodel.source.MappingException;
import org.hibernate.metamodel.source.binder.AttributeSourceContainer;
import org.hibernate.metamodel.source.binder.ExplicitHibernateTypeSource;
import org.hibernate.metamodel.source.binder.MetaAttributeSource;
import org.hibernate.metamodel.source.binder.PluralAttributeElementSource;
import org.hibernate.metamodel.source.binder.PluralAttributeKeySource;
import org.hibernate.metamodel.source.binder.PluralAttributeSource;
import org.hibernate.metamodel.source.hbm.jaxb.mapping.PluralAttributeElement;
import org.hibernate.metamodel.source.hbm.jaxb.mapping.XMLCacheElement;

/**
 * @author Steve Ebersole
 */
public abstract class AbstractPluralAttributeSourceImpl implements PluralAttributeSource {
	private final PluralAttributeElement pluralAttributeElement;
	private final AttributeSourceContainer container;

	private final ExplicitHibernateTypeSource typeInformation;

	private final PluralAttributeKeySource keySource;
	private final PluralAttributeElementSource elementSource;

	protected AbstractPluralAttributeSourceImpl(
			final PluralAttributeElement pluralAttributeElement,
			AttributeSourceContainer container) {
		this.pluralAttributeElement = pluralAttributeElement;
		this.container = container;

		this.keySource = new PluralAttributeKeySourceImpl( pluralAttributeElement.getKey(), container );
		this.elementSource = interpretElementType();

		this.typeInformation = new ExplicitHibernateTypeSource() {
			@Override
			public String getName() {
				return pluralAttributeElement.getCollectionType();
			}

			@Override
			public Map<String, String> getParameters() {
				return Collections.emptyMap();
			}
		};
	}

	private PluralAttributeElementSource interpretElementType() {
		if ( pluralAttributeElement.getElement() != null ) {
			return new BasicPluralAttributeElementSourceImpl(
					pluralAttributeElement.getElement(), container.getLocalBindingContext()
			);
		}
		else if ( pluralAttributeElement.getCompositeElement() != null ) {
			return new CompositePluralAttributeElementSourceImpl(
					pluralAttributeElement.getCompositeElement(), container.getLocalBindingContext()
			);
		}
		else if ( pluralAttributeElement.getOneToMany() != null ) {
			return new OneToManyPluralAttributeElementSourceImpl(
					pluralAttributeElement.getOneToMany(), container.getLocalBindingContext()
			);
		}
		else if ( pluralAttributeElement.getManyToMany() != null ) {
			return new ManyToManyPluralAttributeElementSourceImpl(
					pluralAttributeElement.getManyToMany(), container.getLocalBindingContext()
			);
		}
		else if ( pluralAttributeElement.getManyToAny() != null ) {
			throw new NotYetImplementedException( "Support for many-to-any not yet implemented" );
//			return PluralAttributeElementNature.MANY_TO_ANY;
		}
		else {
			throw new MappingException(
					"Unexpected collection element type : " + pluralAttributeElement.getName(),
					bindingContext().getOrigin()
			);
		}
	}

	public PluralAttributeElement getPluralAttributeElement() {
		return pluralAttributeElement;
	}

	protected AttributeSourceContainer container() {
		return container;
	}

	protected LocalBindingContext bindingContext() {
		return container().getLocalBindingContext();
	}

	@Override
	public PluralAttributeKeySource getKeySource() {
		return keySource;
	}

	@Override
	public PluralAttributeElementSource getElementSource() {
		return elementSource;
	}

	@Override
	public String getExplicitSchemaName() {
		return pluralAttributeElement.getSchema();
	}

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

	@Override
	public String getExplicitCollectionTableName() {
		return pluralAttributeElement.getTable();
	}

	@Override
	public String getCollectionTableComment() {
		return pluralAttributeElement.getComment();
	}

	@Override
	public String getCollectionTableCheck() {
		return pluralAttributeElement.getCheck();
	}

	@Override
	public Caching getCaching() {
		final XMLCacheElement cache = pluralAttributeElement.getCache();
		if ( cache == null ) {
			return null;
		}
		final String region = cache.getRegion() != null
				? cache.getRegion()
				: StringHelper.qualify( container().getPath(), getName() );
		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 String getWhere() {
		return pluralAttributeElement.getWhere();
	}

	@Override
	public String getName() {
		return pluralAttributeElement.getName();
	}

	@Override
	public boolean isSingular() {
		return false;
	}

	@Override
	public ExplicitHibernateTypeSource getTypeInformation() {
		return typeInformation;
	}

	@Override
	public String getPropertyAccessorName() {
		return pluralAttributeElement.getAccess();
	}

	@Override
	public boolean isIncludedInOptimisticLocking() {
		return pluralAttributeElement.isOptimisticLock();
	}

	@Override
	public boolean isInverse() {
		return pluralAttributeElement.isInverse();
	}

	@Override
	public String getCustomPersisterClassName() {
		return pluralAttributeElement.getPersister();
	}

	@Override
	public String getCustomLoaderName() {
		return pluralAttributeElement.getLoader() == null
				? null
				: pluralAttributeElement.getLoader().getQueryRef();
	}

	@Override
	public CustomSQL getCustomSqlInsert() {
		return Helper.buildCustomSql( pluralAttributeElement.getSqlInsert() );
	}

	@Override
	public CustomSQL getCustomSqlUpdate() {
		return Helper.buildCustomSql( pluralAttributeElement.getSqlUpdate() );
	}

	@Override
	public CustomSQL getCustomSqlDelete() {
		return Helper.buildCustomSql( pluralAttributeElement.getSqlDelete() );
	}

	@Override
	public CustomSQL getCustomSqlDeleteAll() {
		return Helper.buildCustomSql( pluralAttributeElement.getSqlDeleteAll() );
	}

	@Override
	public Iterable<MetaAttributeSource> metaAttributes() {
		return Helper.buildMetaAttributeSources( pluralAttributeElement.getMeta() );
	}

	@Override
	public Iterable<CascadeStyle> getCascadeStyles() {
		return Helper.interpretCascadeStyles( pluralAttributeElement.getCascade(), bindingContext() );
	}

	@Override
	public FetchTiming getFetchTiming() {
		final String fetchSelection = pluralAttributeElement.getFetch() != null ?
				pluralAttributeElement.getFetch().value() :
				null;
		final String lazySelection = pluralAttributeElement.getLazy() != null
				? pluralAttributeElement.getLazy().value()
				: null;
		final String outerJoinSelection = pluralAttributeElement.getOuterJoin() != null
				? pluralAttributeElement.getOuterJoin().value()
				: null;

		if ( lazySelection == null ) {
			if ( "join".equals( fetchSelection ) || "true".equals( outerJoinSelection ) ) {
				return FetchTiming.IMMEDIATE;
			}
			else if ( "false".equals( outerJoinSelection ) ) {
				return FetchTiming.DELAYED;
			}
			else {
				return bindingContext().getMappingDefaults().areAssociationsLazy()
						? FetchTiming.DELAYED
						: FetchTiming.IMMEDIATE;
			}
		}
		else  if ( "extra".equals( lazySelection ) ) {
			return FetchTiming.EXTRA_LAZY;
		}
		else if ( "true".equals( lazySelection ) ) {
			return FetchTiming.DELAYED;
		}
		else if ( "false".equals( lazySelection ) ) {
			return FetchTiming.IMMEDIATE;
		}

		throw new MappingException(
				String.format(
						"Unexpected lazy selection [%s] on '%s'",
						lazySelection,
						pluralAttributeElement.getName()
				),
				bindingContext().getOrigin()
		);
	}

	@Override
	public FetchStyle getFetchStyle() {
		final String fetchSelection = pluralAttributeElement.getFetch() != null ?
				pluralAttributeElement.getFetch().value() :
				null;
		final String outerJoinSelection = pluralAttributeElement.getOuterJoin() != null
				? pluralAttributeElement.getOuterJoin().value()
				: null;
		final int batchSize = Helper.getIntValue( pluralAttributeElement.getBatchSize(), -1 );

		if ( fetchSelection == null ) {
			if ( outerJoinSelection == null ) {
				return batchSize > 1 ? FetchStyle.BATCH : FetchStyle.SELECT;
			}
			else {
				if ( "auto".equals( outerJoinSelection ) ) {
					return bindingContext().getMappingDefaults().areAssociationsLazy()
							? FetchStyle.SELECT
							: FetchStyle.JOIN;
				}
				else {
					return "true".equals( outerJoinSelection ) ? FetchStyle.JOIN : FetchStyle.SELECT;
				}
			}
		}
		else {
			if ( "subselect".equals( fetchSelection ) ) {
				return FetchStyle.SUBSELECT;
			}
			else {
				return "join".equals( fetchSelection ) ? FetchStyle.JOIN : FetchStyle.SELECT;
			}
		}
	}

	@Override
	public FetchMode getFetchMode() {
		return pluralAttributeElement.getFetch() == null
				? FetchMode.DEFAULT
				: FetchMode.valueOf( pluralAttributeElement.getFetch().value() );
	}
}

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