HHH-18139 further integrate legacy identifier generates with new infrastructure

- recover ability to use BeanContainer
- simplify logic by making full use of Generator.allowAssignedIdentifiers()
- various simplifications
- deprecate CustomIdGeneratorCreationContext (which was incubating)

Signed-off-by: Gavin King <gavin@hibernate.org>

Author: gavinking

hibernate-core/src/main/java/org/hibernate/boot/model/internal/EmbeddableBinder.java

@@ -62,7 +62,7 @@
 
 import static org.hibernate.boot.model.internal.AnnotatedDiscriminatorColumn.DEFAULT_DISCRIMINATOR_COLUMN_NAME;
 import static org.hibernate.boot.model.internal.AnnotatedDiscriminatorColumn.buildDiscriminatorColumn;
-import static org.hibernate.boot.model.internal.BinderHelper.getOverridableAnnotation;
+import static org.hibernate.boot.model.internal.DialectOverridesAnnotationHelper.getOverridableAnnotation;
 import static org.hibernate.boot.model.internal.BinderHelper.getPath;
 import static org.hibernate.boot.model.internal.BinderHelper.getPropertyOverriddenByMapperOrMapsId;
 import static org.hibernate.boot.model.internal.BinderHelper.getRelativePath;
@@ -802,7 +802,7 @@ private static void processGeneratedId(MetadataBuildingContext context, Componen
 		final AnnotationUsage<GeneratedValue> generatedValue = property.getAnnotationUsage( GeneratedValue.class );
 		final String generatorType = generatedValue != null
 				? generatorType( generatedValue, property.getType().determineRawClass(), context )
-				: DEFAULT_ID_GEN_STRATEGY;
+				: GeneratorBinder.ASSIGNED_GENERATOR_NAME;
 		final String generator = generatedValue != null ? generatedValue.getString( "generator" ) : "";
 
 		if ( isGlobalGeneratorNameGlobal( context ) ) {

hibernate-core/src/main/java/org/hibernate/boot/model/internal/EntityBinder.java

@@ -169,7 +169,6 @@
 import static org.hibernate.internal.util.StringHelper.nullIfEmpty;
 import static org.hibernate.internal.util.StringHelper.unqualify;
 import static org.hibernate.internal.util.collections.CollectionHelper.isNotEmpty;
-import static org.hibernate.mapping.SimpleValue.DEFAULT_ID_GEN_STRATEGY;
 
 
 /**
@@ -750,7 +749,7 @@ private static void handleIdGenerator(PropertyData inferredData, MetadataBuildin
 			buildingContext.getMetadataCollector().addSecondPass( new IdGeneratorResolverSecondPass(
 					id,
 					inferredData.getAttributeMember(),
-					DEFAULT_ID_GEN_STRATEGY,
+					GeneratorBinder.ASSIGNED_GENERATOR_NAME,
 					"",
 					buildingContext
 			) );
@@ -759,7 +758,7 @@ private static void handleIdGenerator(PropertyData inferredData, MetadataBuildin
 			makeIdGenerator(
 					id,
 					inferredData.getAttributeMember(),
-					DEFAULT_ID_GEN_STRATEGY,
+					GeneratorBinder.ASSIGNED_GENERATOR_NAME,
 					"",
 					buildingContext,
 					Collections.emptyMap()