Function getEmptyValueForType

internal/engines/utils.go:117–148

getEmptyValueForType is a helper function that takes a string representation of a type and returns an "empty" value for that type. An empty value is a value that is generally considered a default or initial state for a variable of a given type. The purpose of this function is to be able to initializ

(typ base.AttributeType)

// The purpose of this function is to be able to initialize a variable of a given type without knowing the type in advance.
// The function uses a switch statement to handle different possible type values and returns a corresponding empty value.
func getEmptyValueForType(typ base.AttributeType) interface{} {
	switch typ {
	case base.AttributeType_ATTRIBUTE_TYPE_STRING:
		// In the case of a string type, an empty string "" is considered the empty value.
		return ""
	case base.AttributeType_ATTRIBUTE_TYPE_STRING_ARRAY:
		// In the case of a string type, an empty string "" is considered the empty value.
		return []string{}
	case base.AttributeType_ATTRIBUTE_TYPE_INTEGER:
		// In the case of an integer type, zero (0) is considered the empty value.
		return 0
	case base.AttributeType_ATTRIBUTE_TYPE_INTEGER_ARRAY:
		// In the case of an integer type, zero (0) is considered the empty value.
		return []int32{}
	case base.AttributeType_ATTRIBUTE_TYPE_DOUBLE:
		// In the case of a double (or floating point) type, zero (0.0) is considered the empty value.
		return 0.0
	case base.AttributeType_ATTRIBUTE_TYPE_DOUBLE_ARRAY:
		// In the case of a double (or floating point) type, zero (0.0) is considered the empty value.
		return []float64{}
	case base.AttributeType_ATTRIBUTE_TYPE_BOOLEAN:
		// In the case of a boolean type, false is considered the empty value.
		return false
	case base.AttributeType_ATTRIBUTE_TYPE_BOOLEAN_ARRAY:
		// In the case of a boolean type, false is considered the empty value.
		return []bool{}
	default:
		// For any other types that are not explicitly handled, the function returns nil.
		// This may need to be adjusted if there are other types that need specific empty values.
		return nil
	}
}

// getEmptyProtoValueForType returns an empty protobuf value of the specified type.
// It takes a base.AttributeType as input and generates an empty protobuf Any message