nodeCreateDomain handles *tree.CreateDomain nodes.
(ctx *Context, node *tree.CreateDomain)
| 27 | |
| 28 | // nodeCreateDomain handles *tree.CreateDomain nodes. |
| 29 | func nodeCreateDomain(ctx *Context, node *tree.CreateDomain) (vitess.Statement, error) { |
| 30 | if node == nil { |
| 31 | return nil, nil |
| 32 | } |
| 33 | name, err := nodeUnresolvedObjectName(ctx, node.TypeName) |
| 34 | if err != nil { |
| 35 | return nil, err |
| 36 | } |
| 37 | _, dataType, err := nodeResolvableTypeReference(ctx, node.DataType, false) |
| 38 | if err != nil { |
| 39 | return nil, err |
| 40 | } |
| 41 | |
| 42 | if dataType == pgtypes.Record { |
| 43 | return nil, errors.Errorf(`"record" is not a valid base type for a domain`) |
| 44 | } |
| 45 | |
| 46 | if node.Collate != "" { |
| 47 | return nil, errors.Errorf("domain collation is not yet supported") |
| 48 | } |
| 49 | var children []vitess.Expr |
| 50 | if node.Default != nil { |
| 51 | defExpr, err := nodeExpr(ctx, node.Default) |
| 52 | if err != nil { |
| 53 | return nil, err |
| 54 | } |
| 55 | // Wrap any default expression using a function call in parens to match MySQL's column default requirements |
| 56 | if _, ok := defExpr.(*vitess.FuncExpr); ok { |
| 57 | defExpr = &vitess.ParenExpr{Expr: defExpr} |
| 58 | } |
| 59 | children = append(children, defExpr) |
| 60 | } |
| 61 | |
| 62 | var definedNotNull, definedNull bool |
| 63 | var checkConstraintNames []string |
| 64 | var checkConstraintExprs []vitess.Expr |
| 65 | for _, constraint := range node.Constraints { |
| 66 | if constraint.Check != nil { |
| 67 | check, err := verifyAndReplaceValue(node.DataType, constraint.Check) |
| 68 | if err != nil { |
| 69 | return nil, err |
| 70 | } |
| 71 | |
| 72 | expr, err := nodeExpr(ctx, check) |
| 73 | if err != nil { |
| 74 | return nil, err |
| 75 | } |
| 76 | |
| 77 | checkConstraintNames = append(checkConstraintNames, string(constraint.Constraint)) |
| 78 | checkConstraintExprs = append(checkConstraintExprs, expr) |
| 79 | } else if constraint.NotNull { |
| 80 | definedNotNull = true |
| 81 | if definedNull { |
| 82 | return nil, errors.Errorf("conflicting NULL/NOT NULL constraints") |
| 83 | } |
| 84 | } else { |
| 85 | definedNull = true |
| 86 | if definedNotNull { |
no test coverage detected