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[HHH-19586] Generate repository accessors in the metamodel of Panache2 entities
Comes with 4 out of the box: - managed/blocking (generated) - managed/reactive (generated if reactive-common is in the CP) - stateless/blocking (generated) - stateless/reactive (generated if reactive-common is in the CP) - whatever nested repositories from the entity -- and if they implement one of the first four, we use this instead of the generated one
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‎tooling/metamodel-generator/src/main/java/org/hibernate/processor/annotation/AnnotationMetaEntity.java

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@@ -468,6 +468,10 @@ && containsAnnotation( method, HQL, SQL, FIND ) ) {
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addPersistentMembers( gettersAndSettersOfClass, AccessType.PROPERTY );
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addIdClassIfNeeded( fieldsOfClass, gettersAndSettersOfClass );
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if( hasAnnotation( element, ENTITY) && isPanache2Type(element) && !jakartaDataStaticModel ) {
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addRepositoryMembers( element );
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}
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}
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addAuxiliaryMembers();
@@ -521,6 +525,41 @@ private void addIdClassIfNeeded(List<VariableElement> fields, List<ExecutableEle
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}
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}
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private void addRepositoryMembers(TypeElement element) {
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Element managedBlockingRepository = null;
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Element statelessBlockingRepository = null;
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Element managedReactiveRepository = null;
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Element statelessReactiveRepository = null;
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for ( Element enclosedElement : element.getEnclosedElements() ) {
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if ( enclosedElement.getKind() == ElementKind.INTERFACE ) {
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members.put( enclosedElement.getSimpleName().toString(), new CDIAccessorMetaAttribute( this, enclosedElement ) );
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if ( implementsInterface( (TypeElement) enclosedElement, Constants.PANACHE2_MANAGED_BLOCKING_REPOSITORY_BASE ) ) {
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managedBlockingRepository = enclosedElement;
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}
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else if ( implementsInterface( (TypeElement) enclosedElement, Constants.PANACHE2_STATELESS_BLOCKING_REPOSITORY_BASE ) ) {
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statelessBlockingRepository = enclosedElement;
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}
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else if ( implementsInterface( (TypeElement) enclosedElement, Constants.PANACHE2_MANAGED_REACTIVE_REPOSITORY_BASE ) ) {
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managedReactiveRepository = enclosedElement;
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}
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else if ( implementsInterface( (TypeElement) enclosedElement, Constants.PANACHE2_STATELESS_REACTIVE_REPOSITORY_BASE ) ) {
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statelessReactiveRepository = enclosedElement;
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}
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}
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}
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if ( quarkusInjection ) {
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// FIXME: perhaps import id type?
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TypeMirror idType = findIdType();
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addAccessors(managedBlockingRepository, idType, "managedBlocking", PANACHE2_MANAGED_BLOCKING_REPOSITORY_BASE);
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addAccessors(statelessBlockingRepository, idType, "statelessBlocking", PANACHE2_STATELESS_BLOCKING_REPOSITORY_BASE);
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// Only add those if HR is in the classpath, otherwise it causes a compilation issue
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if( context.usesQuarkusReactiveCommon() ) {
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addAccessors(managedReactiveRepository, idType, "managedReactive", PANACHE2_MANAGED_REACTIVE_REPOSITORY_BASE);
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addAccessors(statelessReactiveRepository, idType, "statelessReactive", PANACHE2_STATELESS_REACTIVE_REPOSITORY_BASE);
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}
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}
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}
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private List<MetaAttribute> getIdMemberNames(List<VariableElement> fields, List<ExecutableElement> methods) {
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final List<MetaAttribute> components = new ArrayList<>();
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for ( var field : fields ) {
@@ -648,6 +687,56 @@ private boolean isEquivalentPrimitiveType(TypeMirror type, TypeMirror match) {
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&& isSameType( context.getTypeUtils().boxedClass( ((PrimitiveType) type) ).asType(), match );
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}
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private void addAccessors(@Nullable Element repositoryType, @Nullable TypeMirror idType,
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String repositoryAccessor, String repositorySuperType) {
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TypeElement finalPrimaryEntity = primaryEntity;
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if ( repositoryType != null ) {
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members.put( repositoryAccessor, new CDIAccessorMetaAttribute( this, repositoryAccessor, repositoryType.getSimpleName().toString() ) );
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}
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else if ( idType != null && finalPrimaryEntity != null ) {
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String repositoryTypeName = "Panache"+repositoryAccessor.substring(0,1).toUpperCase()+repositoryAccessor.substring(1)+"Repository";
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members.put( repositoryAccessor, new CDIAccessorMetaAttribute( this, repositoryAccessor, repositoryTypeName ) );
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members.put( repositoryAccessor + "Repository", new CDITypeMetaAttribute( this, repositoryTypeName, repositorySuperType +"<"+ finalPrimaryEntity.getSimpleName()+", "+ idType.toString()+">" ) );
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}
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}
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private @Nullable TypeMirror findIdType() {
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Element idMember = findIdMember();
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TypeElement primaryEntityForTest = primaryEntity;
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if ( idMember != null && primaryEntityForTest != null ) {
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TypeMirror typedIdMember = this.context.getTypeUtils().asMemberOf((DeclaredType) primaryEntityForTest.asType(), idMember);
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return switch(typedIdMember.getKind()) {
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case ARRAY, DECLARED, BOOLEAN, BYTE, CHAR, SHORT, INT, LONG, FLOAT, DOUBLE -> typedIdMember;
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case EXECUTABLE -> ((ExecutableType) typedIdMember).getReturnType();
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default -> {
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message( element,
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"Unhandled id member kind: "+typedIdMember+" for id "+idMember,
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Diagnostic.Kind.ERROR );
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yield null;
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}
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};
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}
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return null;
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}
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private @Nullable Element findIdMember() {
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if ( primaryEntity == null ) {
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message( element,
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"No primary entity defined to find id member",
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Diagnostic.Kind.ERROR );
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return null;
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}
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for ( Element member : context.getAllMembers( primaryEntity ) ) {
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if ( hasAnnotation( member, ID, EMBEDDED_ID ) ) {
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return member;
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}
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}
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message( element,
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"Could not find any member annotated with @Id or @EmbeddedId",
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Diagnostic.Kind.ERROR );
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return null;
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}
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private boolean checkEntities(List<ExecutableElement> lifecycleMethods, boolean hibernateRepo) {
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boolean foundPersistenceEntity = false;
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VariableElement nonPersistenceParameter = null;

‎tooling/metamodel-generator/src/main/java/org/hibernate/processor/annotation/CDIAccessorMetaAttribute.java

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@@ -0,0 +1,106 @@
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/*
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* SPDX-License-Identifier: Apache-2.0
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* Copyright Red Hat Inc. and Hibernate Authors
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*/
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package org.hibernate.processor.annotation;
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import javax.lang.model.element.Element;
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import org.hibernate.processor.model.MetaAttribute;
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import org.hibernate.processor.model.Metamodel;
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import org.hibernate.processor.util.StringUtil;
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public class CDIAccessorMetaAttribute implements MetaAttribute {
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private AnnotationMetaEntity annotationMetaEntity;
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private String propertyName;
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private String typeName;
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public CDIAccessorMetaAttribute(AnnotationMetaEntity annotationMetaEntity, Element repositoryElement) {
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this.annotationMetaEntity = annotationMetaEntity;
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// turn the name into lowercase
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String name = repositoryElement.getSimpleName().toString();
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// FIXME: this is wrong for types like STEFQueries
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this.propertyName = StringUtil.decapitalize( name );
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this.typeName = name;
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}
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public CDIAccessorMetaAttribute(AnnotationMetaEntity annotationMetaEntity, String propertyName, String className) {
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this.annotationMetaEntity = annotationMetaEntity;
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this.propertyName = propertyName;
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this.typeName = className;
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}
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@Override
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public boolean hasTypedAttribute() {
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return true;
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}
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@Override
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public boolean hasStringAttribute() {
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return false;
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}
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@Override
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public String getAttributeDeclarationString() {
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final StringBuilder declaration = new StringBuilder();
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modifiers( declaration );
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preamble( declaration );
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returnCDI( declaration );
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closingBrace( declaration );
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return declaration.toString();
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}
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private void returnCDI(StringBuilder declaration) {
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annotationMetaEntity.importType("jakarta.enterprise.inject.spi.CDI");
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declaration
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.append("\treturn CDI.current().select(")
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.append(typeName)
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.append(".class).get();\n");
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}
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void closingBrace(StringBuilder declaration) {
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declaration.append("}");
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}
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void preamble(StringBuilder declaration) {
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declaration
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.append(typeName)
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.append(" ")
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.append( getPropertyName() );
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declaration
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.append("() {\n");
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}
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@Override
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public String getAttributeNameDeclarationString() {
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return "";
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}
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@Override
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public String getMetaType() {
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throw new UnsupportedOperationException("operation not supported");
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}
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@Override
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public String getPropertyName() {
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return propertyName;
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}
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@Override
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public String getTypeDeclaration() {
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return "";
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}
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void modifiers(StringBuilder declaration) {
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declaration
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.append("\npublic static ");
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}
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@Override
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public Metamodel getHostingEntity() {
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return annotationMetaEntity;
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}
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}

‎tooling/metamodel-generator/src/main/java/org/hibernate/processor/annotation/CDITypeMetaAttribute.java

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@@ -0,0 +1,92 @@
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/*
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* SPDX-License-Identifier: Apache-2.0
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* Copyright Red Hat Inc. and Hibernate Authors
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*/
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package org.hibernate.processor.annotation;
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import org.hibernate.processor.HibernateProcessor;
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import org.hibernate.processor.model.MetaAttribute;
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import org.hibernate.processor.model.Metamodel;
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public class CDITypeMetaAttribute implements MetaAttribute {
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private AnnotationMetaEntity annotationMetaEntity;
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private String typeName;
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private Object superTypeName;
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public CDITypeMetaAttribute(AnnotationMetaEntity annotationMetaEntity, String className, String superTypeName) {
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this.annotationMetaEntity = annotationMetaEntity;
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this.superTypeName = superTypeName;
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this.typeName = className;
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}
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@Override
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public boolean hasTypedAttribute() {
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return true;
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}
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@Override
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public boolean hasStringAttribute() {
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return false;
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}
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@Override
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public String getAttributeDeclarationString() {
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final StringBuilder declaration = new StringBuilder();
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modifiers( declaration );
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preamble( declaration );
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closingBrace( declaration );
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return declaration.toString();
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}
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void closingBrace(StringBuilder declaration) {
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declaration.append("}");
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}
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void preamble(StringBuilder declaration) {
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declaration
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.append("class ")
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.append(typeName)
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.append(" implements ")
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.append( superTypeName );
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declaration
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.append(" {\n");
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}
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@Override
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public String getAttributeNameDeclarationString() {
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return "";
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}
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@Override
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public String getMetaType() {
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throw new UnsupportedOperationException("operation not supported");
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}
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@Override
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public String getPropertyName() {
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return "";
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}
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@Override
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public String getTypeDeclaration() {
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return "";
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}
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void modifiers(StringBuilder declaration) {
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annotationMetaEntity.importType("jakarta.annotation.Generated");
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annotationMetaEntity.importType("jakarta.enterprise.context.Dependent");
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declaration
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.append("\n@Dependent\n")
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.append("@Generated(\""+HibernateProcessor.class.getName()+"\")\n");
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declaration
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.append("public static ");
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}
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@Override
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public Metamodel getHostingEntity() {
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return annotationMetaEntity;
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}
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}

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