Add safety against empty lists in batch insert method.

Author: ctailor2

spring-data-jdbc/src/main/java/org/springframework/data/jdbc/core/convert/DefaultDataAccessStrategy.java

@@ -109,6 +109,7 @@ public <T> Object insert(T instance, Class<T> domainType, Identifier identifier,
 	@Override
 	public <T> Object[] insert(List<RecordDescriptor<T>> recordDescriptors, Class<T> domainType, boolean includeId) {
 
+		Assert.notEmpty(recordDescriptors, "recordDescriptors must contain at least one recordDescriptor");
 		SqlIdentifierParameterSource[] sqlParameterSources = recordDescriptors.stream()
 				.map(recordDescriptor -> sqlParametersFactory.getInsert(recordDescriptor.getInstance(), domainType, recordDescriptor.getIdentifier()))
 				.toArray(SqlIdentifierParameterSource[]::new);