HSEARCH-5021 Remove the array check from a vector DefaultInitiator

integrationtest/mapper/pojo-base/src/test/java/org/hibernate/search/integrationtest/mapper/pojo/mapping/definition/VectorFieldIT.java

@@ -346,13 +346,7 @@ class IndexedEntity {
 						.typeContext( IndexedEntity.class.getName() )
 						.pathContext( ".notVector" )
 						.failure(
-								"Unable to apply property mapping: this property mapping must target an index field of vector type",
-								"but the resolved field type is non-vector",
-								"This generally means you need to use a different field annotation"
-										+ " or to convert property values using a custom ValueBridge or ValueBinder",
-								"If you are already using a custom ValueBridge or ValueBinder, check its field type",
-								"encountered type DSL step '",
-								"expected interface '" + VectorFieldTypeOptionsStep.class.getName() + "'"
+								"Vectors of java.lang.Integer type are not supported"
 						) );
 	}
 
@@ -372,12 +366,7 @@ class IndexedEntity {
 						.typeContext( IndexedEntity.class.getName() )
 						.pathContext( ".bytes" )
 						.failure(
-								"Unable to apply property mapping: this property mapping must target an index field of vector type, but the resolved field type is non-vector",
-								"This generally means you need to use a different field annotation"
-										+ " or to convert property values using a custom ValueBridge or ValueBinder",
-								"If you are already using a custom ValueBridge or ValueBinder, check its field type",
-								"encountered type DSL step '",
-								"expected interface '" + VectorFieldTypeOptionsStep.class.getName() + "'"
+								"Vectors of java.lang.Integer type are not supported"
 						) );
 	}
 

mapper/pojo-base/src/main/java/org/hibernate/search/mapper/pojo/mapping/definition/programmatic/impl/PropertyMappingVectorFieldOptionsStepImpl.java

@@ -36,14 +36,7 @@ public <F> IndexFieldTypeOptionsStep<?, F> initiate(IndexFieldTypeFactory factor
 						if ( dimension == null ) {
 							throw log.vectorDimensionNotSpecified();
 						}
-						// we consider arrays (byte[] and float[] in particular to be vector types, anything else will be
-						// treated as a non-vector field and delegated to a regular as(..) call.
-						if ( clazz.isArray() ) {
-							return factory.asVector( dimension, clazz );
-						}
-						else {
-							return factory.as( clazz );
-						}
+						return factory.asVector( dimension, clazz );
 					}
 				},
 				FieldModelContributorContext::vectorTypeOptionsStep );

util/internal/integrationtest/common/src/main/java/org/hibernate/search/util/impl/integrationtest/common/stub/backend/types/dsl/impl/StubIndexFieldTypeFactory.java

@@ -167,7 +167,7 @@ public <F> VectorFieldTypeOptionsStep<?, F> asVector(int dimension, Class<F> val
 		if ( float[].class.equals( valueType ) ) {
 			return (VectorFieldTypeOptionsStep<?, F>) asFloatVector( dimension );
 		}
-		return new StubVectorFieldTypeOptionsStep<>( dimension, valueType );
+		throw new IllegalArgumentException("Vectors of " + valueType.getName() + " type are not supported.");
 	}
 
 	@Override