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Hibernate example source code file (LobBindingTests.java)

This example Hibernate source code file (LobBindingTests.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

class, expectedvalue, expectedvalue, hibernatetypedescriptor, id, io, item, jdbc, lob, lob, resources, resources, sql, string, test, test, thing

The Hibernate LobBindingTests.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.annotations.entity;

import java.io.Serializable;
import java.sql.Blob;
import java.sql.Clob;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Lob;

import org.junit.Test;

import org.hibernate.metamodel.binding.AttributeBinding;
import org.hibernate.metamodel.binding.EntityBinding;
import org.hibernate.metamodel.binding.HibernateTypeDescriptor;
import org.hibernate.type.BlobType;
import org.hibernate.type.CharacterArrayClobType;
import org.hibernate.type.ClobType;
import org.hibernate.type.MaterializedBlobType;
import org.hibernate.type.MaterializedClobType;
import org.hibernate.type.PrimitiveCharacterArrayClobType;
import org.hibernate.type.SerializableToBlobType;
import org.hibernate.type.StandardBasicTypes;
import org.hibernate.type.WrappedMaterializedBlobType;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;

/**
 * @author Strong Liu
 */
public class LobBindingTests extends BaseAnnotationBindingTestCase {
    @Entity
    class Item {
        @Id
        long id;
        @Lob
        Clob clob;
        @Lob
        Blob blob;
        @Lob
        String str;
        @Lob
        Character[] characters;
        @Lob
        char[] chars;
        @Lob
        Byte[] bytes;
        @Lob
        byte[] bytes2;
        @Lob
        Thing serializable;
        String noLob;
    }

    class Thing implements Serializable {
        int size;
    }

    private HibernateTypeDescriptor getTypeDescriptor(String attributeName) {
        EntityBinding binding = getEntityBinding( Item.class );
        AttributeBinding attributeBinding = binding.locateAttributeBinding( attributeName );
        return attributeBinding.getHibernateTypeDescriptor();
    }

    private class ExpectedValue {
        String explicitTypeName;
        String javaTypeName;
        boolean isResolvedTypeMappingNull;
        Class resolvedTypeMappingClass;
        boolean isTypeParametersNull;
        boolean isTypeParametersEmpty;

        private ExpectedValue(String explicitTypeName,
                              String javaTypeName,
                              boolean resolvedTypeMappingNull,
                              Class resolvedTypeMappingClass,
                              boolean typeParametersNull,
                              boolean typeParametersEmpty
        ) {
            this.explicitTypeName = explicitTypeName;
            this.isResolvedTypeMappingNull = resolvedTypeMappingNull;
            this.isTypeParametersEmpty = typeParametersEmpty;
            this.isTypeParametersNull = typeParametersNull;
            this.javaTypeName = javaTypeName;
            this.resolvedTypeMappingClass = resolvedTypeMappingClass;
        }
    }

    private void checkHibernateTypeDescriptor(ExpectedValue expectedValue, String attributeName) {
        HibernateTypeDescriptor descriptor = getTypeDescriptor( attributeName );
        assertEquals( expectedValue.explicitTypeName, descriptor.getExplicitTypeName() );
        assertEquals( expectedValue.javaTypeName, descriptor.getJavaTypeName() );
        assertEquals( expectedValue.isResolvedTypeMappingNull, descriptor.getResolvedTypeMapping() == null );
        assertEquals( expectedValue.resolvedTypeMappingClass, descriptor.getResolvedTypeMapping().getClass() );
        assertEquals( expectedValue.isTypeParametersNull, descriptor.getTypeParameters() == null );
        assertEquals( expectedValue.isTypeParametersEmpty, descriptor.getTypeParameters().isEmpty() );
    }

    @Test
    @Resources(annotatedClasses = Item.class)
    public void testClobWithLobAnnotation() {
        ExpectedValue expectedValue = new ExpectedValue(
                "clob",
                Clob.class.getName(),
                false,
                ClobType.class,
                false,
                true
        );
        checkHibernateTypeDescriptor( expectedValue, "clob" );
    }

    @Test
    @Resources(annotatedClasses = Item.class)
    public void testBlobWithLobAnnotation() {
        ExpectedValue expectedValue = new ExpectedValue(
                "blob",
                Blob.class.getName(),
                false,
                BlobType.class,
                false,
                true
        );
        checkHibernateTypeDescriptor( expectedValue, "blob" );
    }

    @Test
    @Resources(annotatedClasses = Item.class)
    public void testStringWithLobAnnotation() {
        ExpectedValue expectedValue = new ExpectedValue(
                "materialized_clob",
                String.class.getName(),
                false,
                MaterializedClobType.class,
                false,
                true
        );
        checkHibernateTypeDescriptor( expectedValue, "str" );
    }

    @Test
    @Resources(annotatedClasses = Item.class)
    public void testCharacterArrayWithLobAnnotation() {
        ExpectedValue expectedValue = new ExpectedValue(
                CharacterArrayClobType.class.getName(),
                Character[].class.getName(),
                false,
                CharacterArrayClobType.class,
                false,
                true
        );
        checkHibernateTypeDescriptor( expectedValue, "characters" );
    }

    @Test
    @Resources(annotatedClasses = Item.class)
    public void testPrimitiveCharacterArrayWithLobAnnotation() {
        ExpectedValue expectedValue = new ExpectedValue(
                PrimitiveCharacterArrayClobType.class.getName(),
                char[].class.getName(),
                false,
                PrimitiveCharacterArrayClobType.class,
                false,
                true
        );
        checkHibernateTypeDescriptor( expectedValue, "chars" );
    }

    @Test
    @Resources(annotatedClasses = Item.class)
    public void testByteArrayWithLobAnnotation() {
        ExpectedValue expectedValue = new ExpectedValue(
                WrappedMaterializedBlobType.class.getName(),
                Byte[].class.getName(),
                false,
                WrappedMaterializedBlobType.class,
                false,
                true
        );
        checkHibernateTypeDescriptor( expectedValue, "bytes" );
    }

    @Test
    @Resources(annotatedClasses = Item.class)
    public void testPrimitiveByteArrayWithLobAnnotation() {
        ExpectedValue expectedValue = new ExpectedValue(
                StandardBasicTypes.MATERIALIZED_BLOB.getName(),
                byte[].class.getName(),
                false,
                MaterializedBlobType.class,
                false,
                true
        );
        checkHibernateTypeDescriptor( expectedValue, "bytes2" );
    }

    @Test
    @Resources(annotatedClasses = Item.class)
    public void testSerializableWithLobAnnotation() {
        ExpectedValue expectedValue = new ExpectedValue(
                SerializableToBlobType.class.getName(),
                Thing.class.getName(),
                false,
                SerializableToBlobType.class,
                false,
                false
        );
        checkHibernateTypeDescriptor( expectedValue, "serializable" );

        assertTrue(
                getTypeDescriptor( "serializable" ).getTypeParameters()
                        .get( SerializableToBlobType.CLASS_NAME )
                        .equals( Thing.class.getName() )
        );
    }


    @Test
    @Resources(annotatedClasses = Item.class)
    public void testNoLobAttribute() {
        assertNull( getTypeDescriptor( "noLob" ).getExplicitTypeName() );
        assertTrue( getTypeDescriptor( "noLob" ).getTypeParameters().isEmpty() );

    }
}

Other Hibernate examples (source code examples)

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