HHH-18705 Moved resultType to TypeUtils

Author: cigaly

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

@@ -29,8 +29,9 @@
 import static org.hibernate.processor.util.TypeUtils.containsAnnotation;
 import static org.hibernate.processor.util.TypeUtils.getAnnotationMirror;
 import static org.hibernate.processor.util.TypeUtils.getAnnotationValue;
+import static org.hibernate.processor.util.TypeUtils.resultType;
 
-public abstract class AnnotationMeta implements Metamodel, ResultTypeSupplier {
+public abstract class AnnotationMeta implements Metamodel {
 
 	void addAuxiliaryMembers() {
 		addAuxiliaryMembersForAnnotation( NAMED_QUERY, "QUERY_" );
@@ -122,7 +123,7 @@ private void handleNamedQuery(AnnotationMirror mirror, boolean checkHql) {
 							);
 						}
 						if ( getAnnotationValue( mirror, "resultClass" ) == null ) {
-							final String resultType = resultType( selectStatement );
+							final String resultType = resultType( selectStatement, context );
 							if ( resultType != null ) {
 								putMember( "QUERY_" + name,
 										new TypedMetaAttribute( this, name, "QUERY_", resultType,

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

@@ -5,7 +5,6 @@
 package org.hibernate.processor.annotation;
 
 import org.checkerframework.checker.nullness.qual.Nullable;
-import org.hibernate.processor.Context;
 import org.hibernate.processor.model.MetaAttribute;
 import org.hibernate.processor.model.Metamodel;
 import org.hibernate.processor.util.Constants;
@@ -16,11 +15,12 @@
 import java.util.TreeSet;
 
 import static org.hibernate.processor.util.StringUtil.nameToFieldName;
+import static org.hibernate.processor.util.TypeUtils.resultType;
 
 /**
  * @author Gavin King
  */
-class NamedQueryMethod implements MetaAttribute, ResultTypeSupplier {
+class NamedQueryMethod implements MetaAttribute {
 	private final AnnotationMeta annotationMeta;
 	private final SqmSelectStatement<?> select;
 	private final String name;
@@ -46,11 +46,6 @@ public NamedQueryMethod(
 		this.addNonnullAnnotation = addNonnullAnnotation;
 	}
 
-	@Override
-	public Context getContext() {
-		return annotationMeta.getContext();
-	}
-
 	@Override
 	public boolean hasTypedAttribute() {
 		return true;
@@ -126,7 +121,7 @@ private void returnType(StringBuilder declaration) {
 		declaration
 				.append(annotationMeta.importType(Constants.LIST))
 				.append('<')
-				.append(annotationMeta.importType(resultType( select )))
+				.append( annotationMeta.importType( resultType( select, annotationMeta.getContext() ) ) )
 				.append("> ")
 				.append(name);
 		if ( reactive ) {

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

@@ -31,6 +31,10 @@
 import javax.tools.Diagnostic;
 
 import jakarta.persistence.AccessType;
+import org.hibernate.query.sqm.SqmExpressible;
+import org.hibernate.query.sqm.tree.select.SqmSelectStatement;
+import org.hibernate.query.sqm.tree.select.SqmSelectableNode;
+
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
@@ -682,6 +686,27 @@ static class EmbeddedAttributeVisitor extends SimpleTypeVisitor8<@Nullable TypeE
 		}
 	}
 
+	public static String resultType(SqmSelectStatement<?> selectStatement, Context context) {
+		final String javaTypeName = selectStatement.getSelection().getJavaTypeName();
+		if ( javaTypeName != null ) {
+			return javaTypeName;
+		}
+		else {
+			final List<SqmSelectableNode<?>> items =
+					selectStatement.getQuerySpec().getSelectClause().getSelectionItems();
+			final SqmExpressible<?> expressible;
+			if ( items.size() == 1 && (expressible = items.getFirst().getExpressible()) != null ) {
+				final String typeName = expressible.getTypeName();
+				final TypeElement entityType = context.entityType( typeName );
+				return entityType == null ? typeName : entityType.getQualifiedName().toString();
+			}
+			else {
+				return "Object[]";
+			}
+		}
+	}
+
+
 	public static boolean isPrimitive(String paramType) {
 		return PRIMITIVE_TYPES.contains( paramType );
 	}