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package engine
import (
"fmt"
"strings"
"github.com/seaweedfs/seaweedfs/weed/pb/schema_pb"
)
// convertSQLTypeToMQ converts SQL column types to MQ schema field types
// Assumptions:
// 1. Standard SQL types map to MQ scalar types
// 2. Unsupported types result in errors
// 3. Default sizes are used for variable-length types
func (e *SQLEngine) convertSQLTypeToMQ(sqlType TypeRef) (*schema_pb.Type, error) {
typeName := strings.ToUpper(sqlType.Type)
switch typeName {
case "BOOLEAN", "BOOL":
return &schema_pb.Type{Kind: &schema_pb.Type_ScalarType{ScalarType: schema_pb.ScalarType_BOOL}}, nil
case "TINYINT", "SMALLINT", "INT", "INTEGER", "MEDIUMINT":
return &schema_pb.Type{Kind: &schema_pb.Type_ScalarType{ScalarType: schema_pb.ScalarType_INT32}}, nil
case "BIGINT":
return &schema_pb.Type{Kind: &schema_pb.Type_ScalarType{ScalarType: schema_pb.ScalarType_INT64}}, nil
case "FLOAT", "REAL":
return &schema_pb.Type{Kind: &schema_pb.Type_ScalarType{ScalarType: schema_pb.ScalarType_FLOAT}}, nil
case "DOUBLE", "DOUBLE PRECISION":
return &schema_pb.Type{Kind: &schema_pb.Type_ScalarType{ScalarType: schema_pb.ScalarType_DOUBLE}}, nil
case "CHAR", "VARCHAR", "TEXT", "LONGTEXT", "MEDIUMTEXT", "TINYTEXT":
return &schema_pb.Type{Kind: &schema_pb.Type_ScalarType{ScalarType: schema_pb.ScalarType_STRING}}, nil
case "BINARY", "VARBINARY", "BLOB", "LONGBLOB", "MEDIUMBLOB", "TINYBLOB":
return &schema_pb.Type{Kind: &schema_pb.Type_ScalarType{ScalarType: schema_pb.ScalarType_BYTES}}, nil
case "JSON":
// JSON stored as string for now
// TODO: Implement proper JSON type support
return &schema_pb.Type{Kind: &schema_pb.Type_ScalarType{ScalarType: schema_pb.ScalarType_STRING}}, nil
case "TIMESTAMP", "DATETIME":
// Store as BIGINT (Unix timestamp in nanoseconds)
return &schema_pb.Type{Kind: &schema_pb.Type_ScalarType{ScalarType: schema_pb.ScalarType_INT64}}, nil
default:
return nil, fmt.Errorf("unsupported SQL type: %s", typeName)
}
}
// convertMQTypeToSQL converts MQ schema field types back to SQL column types
// This is the reverse of convertSQLTypeToMQ for display purposes
func (e *SQLEngine) convertMQTypeToSQL(fieldType *schema_pb.Type) string {
switch t := fieldType.Kind.(type) {
case *schema_pb.Type_ScalarType:
switch t.ScalarType {
case schema_pb.ScalarType_BOOL:
return "BOOLEAN"
case schema_pb.ScalarType_INT32:
return "INT"
case schema_pb.ScalarType_INT64:
return "BIGINT"
case schema_pb.ScalarType_FLOAT:
return "FLOAT"
case schema_pb.ScalarType_DOUBLE:
return "DOUBLE"
case schema_pb.ScalarType_BYTES:
return "VARBINARY"
case schema_pb.ScalarType_STRING:
return "VARCHAR(255)"
default:
return "UNKNOWN"
}
case *schema_pb.Type_ListType:
return "TEXT" // Lists serialized as JSON
case *schema_pb.Type_RecordType:
return "TEXT" // Nested records serialized as JSON
default:
return "UNKNOWN"
}
}
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