Disallow schemaOverrides in * configuration (#953)

Disallow `schemaOverrides` in configuration of `*` index, since that
functionality does not work correctly right now. Note that in the future
we might lift this restriction (if we fix the implementation).

Documentation of this limitation will be included in #950.

quesma/quesma/config/config_v2.go

@@ -574,6 +574,9 @@ func (c *QuesmaNewConfiguration) TranslateToLegacyConfig() QuesmaConfiguration {
 				conf.CreateCommonTable = true
 				conf.UseCommonTableForWildcard = true
 			}
+			if defaultConfig.SchemaOverrides != nil {
+				errAcc = multierror.Append(errAcc, fmt.Errorf("schema overrides of default index ('%s') are not currently supported (only supported in configuration of a specific index)", DefaultWildcardIndexName))
+			}
 			if len(defaultConfig.QueryTarget) > 1 {
 				errAcc = multierror.Append(errAcc, fmt.Errorf("the target configuration of default index ('%s') of query processor is not currently supported", DefaultWildcardIndexName))
 			}
@@ -659,6 +662,9 @@ func (c *QuesmaNewConfiguration) TranslateToLegacyConfig() QuesmaConfiguration {
 				conf.UseCommonTableForWildcard = val == "true"
 			}
 		}
+		if defaultConfig.SchemaOverrides != nil {
+			errAcc = multierror.Append(errAcc, fmt.Errorf("schema overrides of default index ('%s') are not currently supported (only supported in configuration of a specific index)", DefaultWildcardIndexName))
+		}
 		if defaultConfig.UseCommonTable {
 			// We set both flags to true here
 			// as creating common table depends on the first one
@@ -682,6 +688,9 @@ func (c *QuesmaNewConfiguration) TranslateToLegacyConfig() QuesmaConfiguration {
 				conf.UseCommonTableForWildcard = val == "true"
 			}
 		}
+		if ingestProcessorDefaultIndexConfig.SchemaOverrides != nil {
+			errAcc = multierror.Append(errAcc, fmt.Errorf("schema overrides of default index ('%s') are not currently supported (only supported in configuration of a specific index)", DefaultWildcardIndexName))
+		}
 		if ingestProcessorDefaultIndexConfig.UseCommonTable {
 			// We set both flags to true here
 			// as creating common table depends on the first one