adjustFilterToTimeFilter try to find one rowfilter to be time filter if there is no timefilter for fact table query
()
| 104 | |
| 105 | // adjustFilterToTimeFilter try to find one rowfilter to be time filter if there is no timefilter for fact table query |
| 106 | func (qc *AQLQueryContext) adjustFilterToTimeFilter() { |
| 107 | toBeRemovedFilters := []int{} |
| 108 | timeFilter := common.TimeFilter{} |
| 109 | for i, filter := range qc.Query.FiltersParsed { |
| 110 | if e, ok := filter.(*expr.BinaryExpr); ok { |
| 111 | lhs, isCol := e.LHS.(*expr.VarRef) |
| 112 | if !isCol { |
| 113 | continue |
| 114 | } |
| 115 | |
| 116 | // check if this filter on main table event time column |
| 117 | tableID, columnID, err := qc.resolveColumn(lhs.Val) |
| 118 | if err != nil || tableID != 0 || columnID != 0 { |
| 119 | continue |
| 120 | } |
| 121 | |
| 122 | val := "" |
| 123 | // only support number literal or string literal |
| 124 | switch rhs := e.RHS.(type) { |
| 125 | case *expr.NumberLiteral: |
| 126 | val = rhs.String() |
| 127 | case *expr.StringLiteral: |
| 128 | val = rhs.Val |
| 129 | } |
| 130 | if val == "" { |
| 131 | continue |
| 132 | } |
| 133 | |
| 134 | switch e.Op { |
| 135 | case expr.LT: |
| 136 | if timeFilter.To == "" { |
| 137 | // only convert first LT |
| 138 | timeFilter.To = val |
| 139 | toBeRemovedFilters = append(toBeRemovedFilters, i) |
| 140 | } else { |
| 141 | qc.Error = utils.StackError(nil, "Only one '<' filter allowed for event time column") |
| 142 | return |
| 143 | } |
| 144 | case expr.GTE: |
| 145 | if timeFilter.From == "" { |
| 146 | // only convert first GTE |
| 147 | timeFilter.From = val |
| 148 | toBeRemovedFilters = append(toBeRemovedFilters, i) |
| 149 | } else { |
| 150 | qc.Error = utils.StackError(nil, "Only one '>=' filter allowed for event time column") |
| 151 | return |
| 152 | } |
| 153 | } |
| 154 | } |
| 155 | } |
| 156 | if timeFilter.From != "" || timeFilter.To != "" { |
| 157 | // processTimeFilter will handle the from is nil case |
| 158 | if qc.fromTime, qc.toTime, qc.Error = common.ParseTimeFilter(timeFilter, qc.fixedTimezone, utils.Now()); qc.Error != nil { |
| 159 | return |
| 160 | } |
| 161 | // remove from original query filter |
| 162 | for i := len(toBeRemovedFilters) - 1; i >= 0; i-- { |
| 163 | index := toBeRemovedFilters[i] |
no test coverage detected