github.com/willyham/dosa@v2.3.1-0.20171024181418-1e446d37ee71+incompatible/conditioner.go (about) 1 // Copyright (c) 2017 Uber Technologies, Inc. 2 // 3 // Permission is hereby granted, free of charge, to any person obtaining a copy 4 // of this software and associated documentation files (the "Software"), to deal 5 // in the Software without restriction, including without limitation the rights 6 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 7 // copies of the Software, and to permit persons to whom the Software is 8 // furnished to do so, subject to the following conditions: 9 // 10 // The above copyright notice and this permission notice shall be included in 11 // all copies or substantial portions of the Software. 12 // 13 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 14 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 15 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 16 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 17 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 18 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 19 // THE SOFTWARE. 20 21 package dosa 22 23 import "github.com/pkg/errors" 24 25 type conditioner struct { 26 object DomainObject 27 conditions map[string][]*Condition 28 } 29 30 func (c *conditioner) appendOp(op Operator, fieldName string, value interface{}) { 31 c.conditions[fieldName] = append(c.conditions[fieldName], &Condition{Op: op, Value: value}) 32 } 33 34 // convertConditions converts a list of client field names to server side field names 35 func convertConditions(conditions map[string][]*Condition, t *Table) (map[string][]*Condition, error) { 36 serverConditions := map[string][]*Condition{} 37 for colName, conds := range conditions { 38 if scolName, ok := t.FieldToCol[colName]; ok { 39 serverConditions[scolName] = conds 40 // we need to be sure each of the types are correct for marshaling 41 cd := t.FindColumnDefinition(scolName) 42 for _, cond := range conds { 43 if err := ensureTypeMatch(cd.Type, cond.Value); err != nil { 44 return nil, errors.Wrapf(err, "column %s", colName) 45 } 46 } 47 } else { 48 return nil, errors.Errorf("Cannot find column %q in struct %q", colName, t.StructName) 49 } 50 } 51 return serverConditions, nil 52 }