HHH-6148 Adding classmate as a replacement for the commons annotations generic resolution code

This commit is contained in:
Hardy Ferentschik 2011-04-21 18:00:44 +02:00
parent 8f01c1c200
commit dd019a1f43
10 changed files with 446 additions and 56 deletions

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@ -51,6 +51,7 @@ libraries = [
commons_annotations:
'org.hibernate:hibernate-commons-annotations:3.2.0.Final',
jandex: 'org.jboss:jandex:1.0.0.Beta6',
classmate: 'com.fasterxml:classmate:0.5.2',
// Jakarta commons-collections todo : get rid of commons-collections dependency
commons_collections:

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@ -10,6 +10,7 @@ dependencies {
}
compile( libraries.commons_annotations )
compile( libraries.jandex )
compile( libraries.classmate )
compile( libraries.jpa )
compile( libraries.javassist )
antlr( libraries.antlr )

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@ -26,6 +26,7 @@ package org.hibernate.metamodel.source.annotations;
import java.lang.reflect.Field;
import java.lang.reflect.Member;
import java.lang.reflect.Method;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
@ -33,6 +34,9 @@ import java.util.List;
import java.util.Set;
import javax.persistence.AccessType;
import com.fasterxml.classmate.ResolvedTypeWithMembers;
import com.fasterxml.classmate.members.HierarchicType;
import com.fasterxml.classmate.members.ResolvedMember;
import org.jboss.jandex.AnnotationInstance;
import org.jboss.jandex.AnnotationTarget;
import org.jboss.jandex.ClassInfo;
@ -40,6 +44,7 @@ import org.jboss.jandex.FieldInfo;
import org.jboss.jandex.MethodInfo;
import org.hibernate.AnnotationException;
import org.hibernate.AssertionFailure;
import org.hibernate.HibernateException;
import org.hibernate.metamodel.source.annotations.util.JandexHelper;
import org.hibernate.metamodel.source.annotations.util.ReflectionHelper;
@ -61,20 +66,22 @@ public class ConfiguredClass {
private final boolean isMappedSuperClass;
private final List<MappedProperty> mappedProperties;
public ConfiguredClass(ClassInfo info, ConfiguredClass parent, AccessType hierarchyAccessType, ServiceRegistry serviceRegistry) {
public ConfiguredClass(ClassInfo info, ConfiguredClass parent, AccessType hierarchyAccessType, ServiceRegistry serviceRegistry, ResolvedTypeWithMembers resolvedType) {
this.classInfo = info;
this.parent = parent;
this.isRoot = parent == null;
this.hierarchyAccessType = hierarchyAccessType;
AnnotationInstance mappedSuperClassAnnotation = assertNotEntityAndMAppedSuperClass();
AnnotationInstance mappedSuperClassAnnotation = assertNotEntityAndMappedSuperClass();
this.clazz = serviceRegistry.getService( ClassLoaderService.class ).classForName( info.toString() );
isMappedSuperClass = mappedSuperClassAnnotation != null;
classAccessType = determineClassAccessType();
mappedProperties = collectMappedProperties();
List<MappedProperty> tmpProperties = collectMappedProperties( resolvedType );
// make sure the properties are ordered by property name
Collections.sort( mappedProperties );
Collections.sort( tmpProperties );
mappedProperties = Collections.unmodifiableList( tmpProperties );
}
public String getName() {
@ -97,11 +104,18 @@ public class ConfiguredClass {
return isMappedSuperClass;
}
public List<MappedProperty> getMappedProperties() {
return mappedProperties;
}
@Override
public String toString() {
final StringBuilder sb = new StringBuilder();
sb.append( "ConfiguredClass" );
sb.append( "{classInfo=" ).append( classInfo );
sb.append( "{clazz=" ).append( clazz );
sb.append( ", mappedProperties=" ).append( mappedProperties );
sb.append( ", classAccessType=" ).append( classAccessType );
sb.append( ", isRoot=" ).append( isRoot );
sb.append( '}' );
return sb.toString();
}
@ -118,41 +132,78 @@ public class ConfiguredClass {
return accessType;
}
private List<MappedProperty> collectMappedProperties() {
/**
* @return A list of the persistent properties of this configured class
*/
private List<MappedProperty> collectMappedProperties(ResolvedTypeWithMembers resolvedTypes) {
// create sets of transient field and method names
Set<String> transientFieldNames = new HashSet<String>();
Set<String> transientMethodNames = new HashSet<String>();
populateTransientFieldAndMethodLists( transientFieldNames, transientMethodNames );
List<Member> classMembers = new ArrayList<Member>();
Set<String> explicitlyConfiguredAccessMemberNames;
// use the class mate library to generic types
ResolvedTypeWithMembers resolvedType = null;
for ( HierarchicType hierarchicType : resolvedTypes.allTypesAndOverrides() ) {
if ( hierarchicType.getType().getErasedType().equals( clazz ) ) {
resolvedType = ReflectionHelper.resolveMemberTypes( hierarchicType.getType() );
break;
}
}
if ( resolvedType == null ) {
throw new AssertionFailure( "Unable to resolve types for " + clazz.getName() );
}
List<MappedProperty> properties = new ArrayList<MappedProperty>();
Set<String> explicitlyConfiguredMemberNames = createExplicitlyConfiguredAccessProperties(
properties, resolvedType
);
if ( AccessType.FIELD.equals( classAccessType ) ) {
explicitlyConfiguredAccessMemberNames = addExplicitAccessMembers( classMembers, MethodInfo.class );
Field fields[] = clazz.getDeclaredFields();
Field.setAccessible( fields, true );
for ( Field field : fields ) {
if ( !transientFieldNames.contains( field.getName() )
&& !explicitlyConfiguredAccessMemberNames.contains( field.getName() ) ) {
classMembers.add( field );
if ( isPersistentMember( transientFieldNames, explicitlyConfiguredMemberNames, field ) ) {
properties.add( createMappedProperty( field, resolvedType ) );
}
}
}
else {
explicitlyConfiguredAccessMemberNames = addExplicitAccessMembers( classMembers, FieldInfo.class );
Method[] methods = clazz.getDeclaredMethods();
Method.setAccessible( methods, true );
for ( Method method : methods ) {
if ( !transientMethodNames.contains( method.getName() )
&& !explicitlyConfiguredAccessMemberNames.contains( ReflectionHelper.getPropertyName( method ) ) ) {
classMembers.add( method );
if ( isPersistentMember( transientMethodNames, explicitlyConfiguredMemberNames, method ) ) {
properties.add( createMappedProperty( method, resolvedType ) );
}
}
}
List<MappedProperty> properties = new ArrayList<MappedProperty>();
return properties;
}
private Set<String> addExplicitAccessMembers(List<Member> classMembers, Class<? extends AnnotationTarget> targetClass) {
private boolean isPersistentMember(Set<String> transientNames, Set<String> explicitlyConfiguredMemberNames, Member member) {
if ( !ReflectionHelper.isProperty( member ) ) {
return false;
}
if ( transientNames.contains( member.getName() ) ) {
return false;
}
if ( explicitlyConfiguredMemberNames.contains( member.getName() ) ) {
return false;
}
return true;
}
/**
* Creates {@code MappedProperty} instances for the explicitly configured persistent properties
*
* @param mappedProperties list to which to add the explicitly configured mapped properties
*
* @return the property names of the explicitly configured class names in a set
*/
private Set<String> createExplicitlyConfiguredAccessProperties(List<MappedProperty> mappedProperties, ResolvedTypeWithMembers resolvedMembers) {
Set<String> explicitAccessMembers = new HashSet<String>();
List<AnnotationInstance> accessAnnotations = classInfo.annotations().get( JPADotNames.ACCESS );
@ -160,60 +211,106 @@ public class ConfiguredClass {
return explicitAccessMembers;
}
// iterate over all @Access annotations defined on the current class
for ( AnnotationInstance accessAnnotation : accessAnnotations ) {
// at this stage we are only interested at annotations defined on fields and methods
AnnotationTarget target = accessAnnotation.target();
if ( !target.getClass().equals( targetClass ) ) {
// we are only interested at annotations defined on fields and methods
AnnotationTarget annotationTarget = accessAnnotation.target();
if ( !( annotationTarget.getClass().equals( MethodInfo.class ) || annotationTarget.getClass()
.equals( FieldInfo.class ) ) ) {
continue;
}
AccessType accessType = Enum.valueOf( AccessType.class, accessAnnotation.value().asEnum() );
if ( target instanceof MethodInfo && MethodInfo.class.equals( targetClass ) ) {
// annotating a field with @AccessType(PROPERTY) has not effect
if ( !AccessType.PROPERTY.equals( accessType ) ) {
// when class access type is field
// overriding access annotations must be placed on properties and have the access type PROPERTY
if ( AccessType.FIELD.equals( classAccessType ) ) {
if ( !( annotationTarget instanceof MethodInfo ) ) {
// todo log warning !?
continue;
}
if ( !AccessType.PROPERTY.equals( accessType ) ) {
// todo log warning !?
continue;
}
}
// when class access type is property
// overriding access annotations must be placed on fields and have the access type FIELD
if ( AccessType.PROPERTY.equals( classAccessType ) ) {
if ( !( annotationTarget instanceof FieldInfo ) ) {
// todo log warning !?
continue;
}
if ( !AccessType.FIELD.equals( accessType ) ) {
// todo log warning !?
continue;
}
}
// the placement is correct, get the member
Member member;
if ( annotationTarget instanceof MethodInfo ) {
Method m;
try {
m = clazz.getMethod( ( (MethodInfo) target ).name() );
m = clazz.getMethod( ( (MethodInfo) annotationTarget ).name() );
}
catch ( NoSuchMethodException e ) {
throw new HibernateException(
"Unable to load method "
+ ( (MethodInfo) target ).name()
+ ( (MethodInfo) annotationTarget ).name()
+ " of class " + clazz.getName()
);
}
classMembers.add( m );
explicitAccessMembers.add( ReflectionHelper.getPropertyName( m ) );
continue;
}
if ( target instanceof FieldInfo && FieldInfo.class.equals( targetClass ) ) {
// annotating a method w/ @AccessType(FIELD) has no effect
if ( !AccessType.FIELD.equals( accessType ) ) {
continue;
member = m;
}
else {
Field f;
try {
f = clazz.getField( ( (FieldInfo) target ).name() );
f = clazz.getField( ( (FieldInfo) annotationTarget ).name() );
}
catch ( NoSuchFieldException e ) {
throw new HibernateException(
"Unable to load field "
+ ( (FieldInfo) target ).name()
+ ( (FieldInfo) annotationTarget ).name()
+ " of class " + clazz.getName()
);
}
classMembers.add( f );
explicitAccessMembers.add( f.getName() );
continue;
member = f;
}
if ( ReflectionHelper.isProperty( member ) ) {
mappedProperties.add( createMappedProperty( member, resolvedMembers ) );
explicitAccessMembers.add( member.getName() );
}
}
return explicitAccessMembers;
}
private MappedProperty createMappedProperty(Member member, ResolvedTypeWithMembers resolvedType) {
String name = ReflectionHelper.getPropertyName( member );
ResolvedMember[] resolvedMembers;
if ( member instanceof Field ) {
resolvedMembers = resolvedType.getMemberFields();
}
else {
resolvedMembers = resolvedType.getMemberMethods();
}
Type type = findResolvedType( member.getName(), resolvedMembers );
return new MappedProperty( name, type );
}
private Type findResolvedType(String name, ResolvedMember[] resolvedMembers) {
for ( ResolvedMember resolvedMember : resolvedMembers ) {
if ( resolvedMember.getName().equals( name ) ) {
return resolvedMember.getType().getErasedType();
}
}
// todo - what to do here
return null;
}
/**
* Populates the sets of transient field and method names.
*
@ -237,7 +334,7 @@ public class ConfiguredClass {
}
}
private AnnotationInstance assertNotEntityAndMAppedSuperClass() {
private AnnotationInstance assertNotEntityAndMappedSuperClass() {
//@Entity and @MappedSuperclass on the same class leads to a NPE down the road
AnnotationInstance jpaEntityAnnotation = JandexHelper.getSingleAnnotation( classInfo, JPADotNames.ENTITY );
AnnotationInstance mappedSuperClassAnnotation = JandexHelper.getSingleAnnotation(

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@ -29,6 +29,7 @@ import java.util.List;
import javax.persistence.AccessType;
import javax.persistence.InheritanceType;
import com.fasterxml.classmate.ResolvedTypeWithMembers;
import org.jboss.jandex.AnnotationInstance;
import org.jboss.jandex.ClassInfo;
import org.jboss.jandex.FieldInfo;
@ -36,7 +37,9 @@ import org.jboss.jandex.MethodInfo;
import org.hibernate.AnnotationException;
import org.hibernate.metamodel.source.annotations.util.JandexHelper;
import org.hibernate.metamodel.source.annotations.util.ReflectionHelper;
import org.hibernate.service.ServiceRegistry;
import org.hibernate.service.classloading.spi.ClassLoaderService;
/**
* Represents the inheritance structure of the configured classes within a class hierarchy.
@ -56,10 +59,14 @@ public class ConfiguredClassHierarchy implements Iterable<ConfiguredClass> {
defaultAccessType = determineDefaultAccessType( classes );
inheritanceType = determineInheritanceType( classes );
ClassLoaderService classLoaderService = serviceRegistry.getService( ClassLoaderService.class );
Class<?> clazz = classLoaderService.classForName( classes.get( classes.size() - 1 ).name().toString() );
ResolvedTypeWithMembers resolvedMembers = ReflectionHelper.resolveMemberTypes( clazz );
configuredClasses = new ArrayList<ConfiguredClass>();
ConfiguredClass parent = null;
for ( ClassInfo info : classes ) {
ConfiguredClass configuredClass = new ConfiguredClass( info, parent, defaultAccessType, serviceRegistry );
ConfiguredClass configuredClass = new ConfiguredClass( info, parent, defaultAccessType, serviceRegistry, resolvedMembers );
configuredClasses.add( configuredClass );
parent = configuredClass;
}
@ -81,8 +88,7 @@ public class ConfiguredClassHierarchy implements Iterable<ConfiguredClass> {
}
@Override
public String toString
() {
public String toString() {
final StringBuilder sb = new StringBuilder();
sb.append( "ConfiguredClassHierarchy" );
sb.append( "{defaultAccessType=" ).append( defaultAccessType );

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@ -27,15 +27,11 @@ import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import javax.persistence.GeneratedValue;
import org.jboss.jandex.AnnotationInstance;
import org.hibernate.AssertionFailure;
import org.hibernate.MappingException;
import org.hibernate.cfg.BinderHelper;
import org.hibernate.internal.util.StringHelper;
import org.hibernate.mapping.MetaAttribute;
import org.hibernate.mapping.PropertyGeneration;
import org.hibernate.metamodel.binding.EntityBinding;
import org.hibernate.metamodel.binding.HibernateTypeDescriptor;
@ -110,7 +106,11 @@ public class EntityBinder {
entityBinding.getEntity().getOrCreateSingularAttribute( idName );
SimpleAttributeBinding idBinding = entityBinding.makeSimplePrimaryKeyAttributeBinding( idName );
idBinding.initialize( new AnnotationSimpleAttributeDomainState() );
AnnotationSimpleAttributeDomainState domainState = new AnnotationSimpleAttributeDomainState();
//domainState.propertyGeneration =
idBinding.initialize( domainState );
idBinding.initializeTupleValue( new AnnotationSimpleAttributeRelationalState() );
}
@ -198,6 +198,8 @@ public class EntityBinder {
}
public static class AnnotationSimpleAttributeDomainState implements SimpleAttributeBinding.DomainState {
PropertyGeneration propertyGeneration;
@Override
public PropertyGeneration getPropertyGeneration() {
@ -208,7 +210,7 @@ public class EntityBinder {
// String generatorName = generatedValue != null ?
// generatedValue.generator() :
// BinderHelper.ANNOTATION_STRING_DEFAULT;
return PropertyGeneration.ALWAYS;
return propertyGeneration;
}
@Override
@ -272,7 +274,7 @@ public class EntityBinder {
}
@Override
public Map<String, MetaAttribute> getMetaAttributes(EntityBinding entityBinding) {
public Map<String, org.hibernate.metamodel.domain.MetaAttribute> getMetaAttributes(EntityBinding entityBinding) {
return null; //To change body of implemented methods use File | Settings | File Templates.
}
}

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@ -23,6 +23,8 @@
*/
package org.hibernate.metamodel.source.annotations;
import java.lang.reflect.Type;
/**
* Represent a mapped property (explicitly or implicitly mapped).
*
@ -30,19 +32,35 @@ package org.hibernate.metamodel.source.annotations;
*/
public class MappedProperty implements Comparable<MappedProperty> {
private final String name;
private final Type type;
MappedProperty(String name) {
MappedProperty(String name, Type type) {
this.name = name;
this.type = type;
}
public String getName() {
return name;
}
public Type getType() {
return type;
}
@Override
public int compareTo(MappedProperty mappedProperty) {
return name.compareTo( mappedProperty.getName() );
}
@Override
public String toString() {
final StringBuilder sb = new StringBuilder();
sb.append( "MappedProperty" );
sb.append( "{name='" ).append( name ).append( '\'' );
sb.append( ", type=" ).append( type );
sb.append( '}' );
return sb.toString();
}
}

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@ -4,6 +4,12 @@ import java.beans.Introspector;
import java.lang.reflect.Field;
import java.lang.reflect.Member;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import com.fasterxml.classmate.MemberResolver;
import com.fasterxml.classmate.ResolvedType;
import com.fasterxml.classmate.ResolvedTypeWithMembers;
import com.fasterxml.classmate.TypeResolver;
/**
* Some helper methods for reflection tasks
@ -11,6 +17,8 @@ import java.lang.reflect.Method;
* @author Hardy Ferentschik
*/
public class ReflectionHelper {
private static final TypeResolver typeResolver = new TypeResolver();
private ReflectionHelper() {
}
@ -19,7 +27,7 @@ public class ReflectionHelper {
*
* @param member the member for which to get the property name.
*
* @return The bean method name with the "is" or "get" prefix stripped off, <code>null</code>
* @return The bean method name with the "is" or "get" prefix stripped off, {@code null}
* the method name id not according to the JavaBeans standard.
*/
public static String getPropertyName(Member member) {
@ -43,6 +51,31 @@ public class ReflectionHelper {
}
return name;
}
public static ResolvedTypeWithMembers resolveMemberTypes(Class<?> clazz) {
ResolvedType resolvedType = typeResolver.resolve( clazz );
MemberResolver memberResolver = new MemberResolver( typeResolver );
return memberResolver.resolve( resolvedType, null, null );
}
public static ResolvedTypeWithMembers resolveMemberTypes(ResolvedType type) {
MemberResolver memberResolver = new MemberResolver( typeResolver );
return memberResolver.resolve( type, null, null );
}
public static boolean isProperty(Member m) {
if ( m instanceof Method ) {
Method method = (Method) m;
return !method.isSynthetic()
&& !method.isBridge()
&& !Modifier.isStatic( method.getModifiers() )
&& method.getParameterTypes().length == 0
&& ( method.getName().startsWith( "get" ) || method.getName().startsWith( "is" ) );
}
else {
return !Modifier.isTransient( m.getModifiers() ) && !m.isSynthetic();
}
}
}

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@ -116,7 +116,6 @@ public class HbmSimpleAttributeDomainState extends AbstractHbmAttributeDomainSta
XMLPropertyElement property) {
super( defaults, attribute, entityMetaAttributes, property );
this.isLazy = property.isLazy();
;
this.propertyGeneration = PropertyGeneration.parse( property.getGenerated() );
if ( propertyGeneration == PropertyGeneration.ALWAYS || propertyGeneration == PropertyGeneration.INSERT ) {

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@ -46,7 +46,7 @@ import static org.junit.Assert.fail;
*/
public class BasicAnnotationBindingTests extends AbstractBasicBindingTests {
//@FailureExpected(jiraKey = "HHH-5672", message = "Work in progress")
@FailureExpected(jiraKey = "HHH-5672", message = "Work in progress")
@Test
public void testSimpleEntityMapping() {
super.testSimpleEntityMapping();

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@ -0,0 +1,233 @@
package org.hibernate.metamodel.source.annotations.util;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.ManyToOne;
import javax.persistence.MappedSuperclass;
import org.jboss.jandex.ClassInfo;
import org.jboss.jandex.DotName;
import org.jboss.jandex.Index;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.hibernate.metamodel.source.annotations.ConfiguredClass;
import org.hibernate.metamodel.source.annotations.ConfiguredClassHierarchy;
import org.hibernate.metamodel.source.annotations.MappedProperty;
import org.hibernate.service.ServiceRegistryBuilder;
import org.hibernate.service.classloading.spi.ClassLoaderService;
import org.hibernate.service.internal.BasicServiceRegistryImpl;
import org.hibernate.testing.junit4.BaseUnitTestCase;
import static junit.framework.Assert.assertEquals;
import static junit.framework.Assert.assertFalse;
import static junit.framework.Assert.assertTrue;
/**
* @author Hardy Ferentschik
*/
public class GenericTypeDiscoveryTest extends BaseUnitTestCase {
private BasicServiceRegistryImpl serviceRegistry;
private ClassLoaderService service;
@Before
public void setUp() {
serviceRegistry = (BasicServiceRegistryImpl) new ServiceRegistryBuilder().buildServiceRegistry();
service = serviceRegistry.getService( ClassLoaderService.class );
}
@After
public void tearDown() {
serviceRegistry.destroy();
}
@Test
public void testSingleEntity() {
Index index = JandexHelper.indexForClass( service, Paper.class, Stuff.class, Item.class, PricedStuff.class );
Set<ConfiguredClassHierarchy> hierarchies = ConfiguredClassHierarchyBuilder.createEntityHierarchies(
index, serviceRegistry
);
assertEquals( "There should be only one hierarchy", 1, hierarchies.size() );
Iterator<ConfiguredClass> iter = hierarchies.iterator().next().iterator();
ConfiguredClass configuredClass = iter.next();
ClassInfo info = configuredClass.getClassInfo();
assertEquals( "wrong class", DotName.createSimple( Stuff.class.getName() ), info.name() );
List<MappedProperty> mappedProperties = configuredClass.getMappedProperties();
assertTrue( "Stuff should have one mapped property", mappedProperties.size() == 1 );
MappedProperty property = mappedProperties.get( 0 );
assertEquals( Price.class, property.getType() );
assertTrue( iter.hasNext() );
configuredClass = iter.next();
info = configuredClass.getClassInfo();
assertEquals( "wrong class", DotName.createSimple( PricedStuff.class.getName() ), info.name() );
mappedProperties = configuredClass.getMappedProperties();
assertTrue( "PricedStuff should not mapped properties", mappedProperties.size() == 0 );
assertTrue( iter.hasNext() );
configuredClass = iter.next();
info = configuredClass.getClassInfo();
assertEquals( "wrong class", DotName.createSimple( Item.class.getName() ), info.name() );
mappedProperties = configuredClass.getMappedProperties();
assertTrue( "Item should have 4 mapped properties", mappedProperties.size() == 4 );
// properties are alphabetically ordered!
property = mappedProperties.get( 2 );
assertEquals( SomeGuy.class, property.getType() );
property = mappedProperties.get( 3 );
assertEquals( PaperType.class, property.getType() );
assertTrue( iter.hasNext() );
configuredClass = iter.next();
info = configuredClass.getClassInfo();
assertEquals( "wrong class", DotName.createSimple( Paper.class.getName() ), info.name() );
mappedProperties = configuredClass.getMappedProperties();
assertTrue( "Paper should not mapped properties", mappedProperties.size() == 0 );
assertFalse( iter.hasNext() );
}
@MappedSuperclass
public class Stuff<Value> {
private Value value;
@ManyToOne
public Value getValue() {
return value;
}
public void setValue(Value value) {
this.value = value;
}
}
@MappedSuperclass
public class PricedStuff extends Stuff<Price> {
}
@MappedSuperclass
public class Item<Type, Owner> extends PricedStuff {
private Integer id;
private String name;
private Type type;
private Owner owner;
@Id
@GeneratedValue
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@ManyToOne
public Type getType() {
return type;
}
public void setType(Type type) {
this.type = type;
}
@ManyToOne
public Owner getOwner() {
return owner;
}
public void setOwner(Owner owner) {
this.owner = owner;
}
}
@Entity
public class Paper extends Item<PaperType, SomeGuy> {
}
@Entity
public class PaperType {
private Integer id;
private String name;
@Id
@GeneratedValue
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
@Entity
public class Price {
private Integer id;
private Double amount;
private String currency;
@Id
@GeneratedValue
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public Double getAmount() {
return amount;
}
public void setAmount(Double amount) {
this.amount = amount;
}
public String getCurrency() {
return currency;
}
public void setCurrency(String currency) {
this.currency = currency;
}
}
@Entity
public class SomeGuy {
private Integer id;
@Id
@GeneratedValue
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
}
}