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| 1 | +package mapper |
| 2 | + |
| 3 | +import ( |
| 4 | + "github.com/acmestack/gobatis-plus/pkg/constants" |
| 5 | + "github.com/acmestack/gobatis/builder" |
| 6 | + "reflect" |
| 7 | +) |
| 8 | + |
| 9 | +type QueryWrapper[T any] struct { |
| 10 | + Columns []string |
| 11 | + Entity *T |
| 12 | + SqlBuild *builder.SQLFragment |
| 13 | + TableName string |
| 14 | +} |
| 15 | + |
| 16 | +func (queryWrapper *QueryWrapper[T]) Eq(column string, val any) Wrapper[T] { |
| 17 | + queryWrapper.setCondition(column, val, constants.Eq) |
| 18 | + return queryWrapper |
| 19 | +} |
| 20 | + |
| 21 | +func (queryWrapper *QueryWrapper[T]) Ne(column string, val any) Wrapper[T] { |
| 22 | + queryWrapper.setCondition(column, val, constants.Ne) |
| 23 | + return queryWrapper |
| 24 | +} |
| 25 | + |
| 26 | +func (queryWrapper *QueryWrapper[T]) Gt(column string, val any) Wrapper[T] { |
| 27 | + queryWrapper.setCondition(column, val, constants.Gt) |
| 28 | + return queryWrapper |
| 29 | +} |
| 30 | + |
| 31 | +func (queryWrapper *QueryWrapper[T]) Ge(column string, val any) Wrapper[T] { |
| 32 | + queryWrapper.setCondition(column, val, constants.Ge) |
| 33 | + return queryWrapper |
| 34 | +} |
| 35 | + |
| 36 | +func (queryWrapper *QueryWrapper[T]) Lt(column string, val any) Wrapper[T] { |
| 37 | + queryWrapper.setCondition(column, val, constants.Lt) |
| 38 | + return queryWrapper |
| 39 | +} |
| 40 | + |
| 41 | +func (queryWrapper *QueryWrapper[T]) Le(column string, val any) Wrapper[T] { |
| 42 | + queryWrapper.setCondition(column, val, constants.Le) |
| 43 | + return queryWrapper |
| 44 | +} |
| 45 | + |
| 46 | +func (queryWrapper *QueryWrapper[T]) Like(column string, val any) Wrapper[T] { |
| 47 | + s := val.(string) |
| 48 | + queryWrapper.setCondition(column, "%"+s+"%", constants.Like) |
| 49 | + return queryWrapper |
| 50 | +} |
| 51 | + |
| 52 | +func (queryWrapper *QueryWrapper[T]) NotLike(column string, val any) Wrapper[T] { |
| 53 | + s := val.(string) |
| 54 | + queryWrapper.setCondition(column, "%"+s+"%", constants.Not+constants.Like) |
| 55 | + return queryWrapper |
| 56 | +} |
| 57 | + |
| 58 | +func (queryWrapper *QueryWrapper[T]) LikeLeft(column string, val any) Wrapper[T] { |
| 59 | + s := val.(string) |
| 60 | + queryWrapper.setCondition(column, "%"+s, constants.Like) |
| 61 | + return queryWrapper |
| 62 | +} |
| 63 | + |
| 64 | +func (queryWrapper *QueryWrapper[T]) LikeRight(column string, val any) Wrapper[T] { |
| 65 | + s := val.(string) |
| 66 | + queryWrapper.setCondition(column, s+"%", constants.Like) |
| 67 | + return queryWrapper |
| 68 | +} |
| 69 | + |
| 70 | +func (queryWrapper *QueryWrapper[T]) And() Wrapper[T] { |
| 71 | + queryWrapper.SqlBuild = queryWrapper.SqlBuild.And() |
| 72 | + return queryWrapper |
| 73 | +} |
| 74 | + |
| 75 | +func (queryWrapper *QueryWrapper[T]) Or() Wrapper[T] { |
| 76 | + queryWrapper.SqlBuild = queryWrapper.SqlBuild.Or() |
| 77 | + return queryWrapper |
| 78 | +} |
| 79 | + |
| 80 | +func (queryWrapper *QueryWrapper[T]) Select(columns ...string) Wrapper[T] { |
| 81 | + queryWrapper.SqlBuild.Select(columns...) |
| 82 | + return queryWrapper |
| 83 | +} |
| 84 | + |
| 85 | +func (queryWrapper *QueryWrapper[T]) init() { |
| 86 | + if queryWrapper.Entity == nil { |
| 87 | + queryWrapper.Entity = new(T) |
| 88 | + } |
| 89 | + if queryWrapper.TableName == "" { |
| 90 | + queryWrapper.setTableName() |
| 91 | + } |
| 92 | +} |
| 93 | + |
| 94 | +func (queryWrapper *QueryWrapper[T]) setCondition(column string, val any, conditionType string) { |
| 95 | + queryWrapper.init() |
| 96 | + entityValueRef := reflect.ValueOf(queryWrapper.Entity).Elem() |
| 97 | + entityRef := reflect.TypeOf(queryWrapper.Entity).Elem() |
| 98 | + numField := entityRef.NumField() |
| 99 | + for i := 0; i < numField; i++ { |
| 100 | + field := entityRef.Field(i) |
| 101 | + filedName := field.Tag.Get("xfield") |
| 102 | + if filedName == column { |
| 103 | + setField(entityValueRef, field, val) |
| 104 | + } |
| 105 | + } |
| 106 | + key := getConditionKey(column, entityRef.Name(), conditionType) |
| 107 | + queryWrapper.SqlBuild = queryWrapper.SqlBuild.Where(key) |
| 108 | +} |
| 109 | + |
| 110 | +func getConditionKey(column string, name string, conditionType string) string { |
| 111 | + key := column + conditionType + "#{" + name + "." + column + "}" |
| 112 | + return key |
| 113 | +} |
| 114 | + |
| 115 | +func setField(entityValueRef reflect.Value, field reflect.StructField, val any) { |
| 116 | + ft := field.Type |
| 117 | + switch ft.Kind() { |
| 118 | + case reflect.String: |
| 119 | + entityValueRef.FieldByName(field.Name).SetString(val.(string)) |
| 120 | + case reflect.Int: |
| 121 | + i := val.(int) |
| 122 | + entityValueRef.FieldByName(field.Name).SetInt(int64(i)) |
| 123 | + } |
| 124 | +} |
| 125 | + |
| 126 | +func (queryWrapper *QueryWrapper[T]) setTableName() { |
| 127 | + // todo The future is through annotations get the tableName |
| 128 | + entityRef := reflect.TypeOf(queryWrapper.Entity).Elem() |
| 129 | + tableName := entityRef.Field(0).Tag |
| 130 | + queryWrapper.TableName = string(tableName) |
| 131 | + |
| 132 | + queryWrapper.checkColumns() |
| 133 | + |
| 134 | + queryWrapper.SqlBuild = builder.Select(queryWrapper.Columns...).From(string(tableName)) |
| 135 | +} |
| 136 | + |
| 137 | +func (queryWrapper *QueryWrapper[T]) checkColumns() { |
| 138 | + if len(queryWrapper.Columns) == 0 { |
| 139 | + entityRef := reflect.TypeOf(queryWrapper.Entity).Elem() |
| 140 | + numField := entityRef.NumField() |
| 141 | + for i := 0; i < numField; i++ { |
| 142 | + field := entityRef.Field(i) |
| 143 | + filedName := field.Tag.Get("xfield") |
| 144 | + if filedName != "" { |
| 145 | + queryWrapper.Columns = append(queryWrapper.Columns, filedName) |
| 146 | + } |
| 147 | + } |
| 148 | + } |
| 149 | +} |
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