Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 | 2x 2x 2x 1x 1x 2x 2x 1x 1x 2x 2x 1x 1x 2x | /*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { deepDelete, deepSet } from './object-change';
export interface QueryContext {
useCache?: boolean | undefined;
populateCache?: boolean | undefined;
useApproximateCountDistinct?: boolean | undefined;
useApproximateTopN?: boolean | undefined;
[key: string]: any;
}
export function isEmptyContext(context: QueryContext): boolean {
return Object.keys(context).length === 0;
}
// -----------------------------
export function getUseCache(context: QueryContext): boolean {
const { useCache } = context;
return typeof useCache === 'boolean' ? useCache : true;
}
export function setUseCache(context: QueryContext, useCache: boolean): QueryContext {
let newContext = context;
if (useCache) {
newContext = deepDelete(newContext, 'useCache');
newContext = deepDelete(newContext, 'populateCache');
} else {
newContext = deepSet(newContext, 'useCache', false);
newContext = deepSet(newContext, 'populateCache', false);
}
return newContext;
}
// -----------------------------
export function getUseApproximateCountDistinct(context: QueryContext): boolean {
const { useApproximateCountDistinct } = context;
return typeof useApproximateCountDistinct === 'boolean' ? useApproximateCountDistinct : true;
}
export function setUseApproximateCountDistinct(
context: QueryContext,
useApproximateCountDistinct: boolean,
): QueryContext {
if (useApproximateCountDistinct) {
return deepDelete(context, 'useApproximateCountDistinct');
} else {
return deepSet(context, 'useApproximateCountDistinct', false);
}
}
// -----------------------------
export function getUseApproximateTopN(context: QueryContext): boolean {
const { useApproximateTopN } = context;
return typeof useApproximateTopN === 'boolean' ? useApproximateTopN : true;
}
export function setUseApproximateTopN(
context: QueryContext,
useApproximateTopN: boolean,
): QueryContext {
if (useApproximateTopN) {
return deepDelete(context, 'useApproximateTopN');
} else {
return deepSet(context, 'useApproximateTopN', false);
}
}
|