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perspectives - prepare for nested incremental load

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This commit is contained in:
Jan Prochazka
2022-07-21 18:10:43 +02:00
parent 8f1343bc42
commit 28e06166e0
2 changed files with 51 additions and 3 deletions
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42
packages/datalib/src/PerspectiveCache.ts
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@@ -1,14 +1,23 @@
import { RangeDefinition } from 'dbgate-types';
import { PerspectiveDataLoadProps } from './PerspectiveDataProvider';
import _pick from 'lodash/pick';
import _omit from 'lodash/omit';
import _zip from 'lodash/zip';
import _difference from 'lodash/difference';
import debug from 'debug';
const dbg = debug('dbgate:PerspectiveCache');
export class PerspectiveBindingGroup {
constructor(public table: PerspectiveCacheTable) {}
groupSize?: number;
loadedAll: boolean;
loadedRows: any[] = [];
bindingValues: any[];
}
export class PerspectiveCacheTable {
constructor(props: PerspectiveDataLoadProps) {
constructor(props: PerspectiveDataLoadProps, public cache: PerspectiveCache) {
this.schemaName = props.schemaName;
this.pureName = props.pureName;
this.bindingColumns = props.bindingColumns;
@@ -22,6 +31,8 @@ export class PerspectiveCacheTable {
dataColumns: string[];
loadedAll: boolean;
loadedRows: any[] = [];
bindingGroups: { [bindingKey: string]: PerspectiveBindingGroup } = {};
get loadedCount() {
return this.loadedRows.length;
}
@@ -32,6 +43,31 @@ export class PerspectiveCacheTable {
incomplete: props.topCount < this.loadedCount || !this.loadedAll,
};
}
getBindingGroups(props: PerspectiveDataLoadProps): { cached: PerspectiveBindingGroup[]; uncached: any[][] } {
const cached: PerspectiveBindingGroup[] = [];
const uncached = [];
for (const group in props.bindingValues) {
const key = this.cache.stableStringify(group);
const item = this.bindingGroups[key];
if (item) {
cached.push(item);
} else {
uncached.push(group);
}
}
return { cached, uncached };
}
storeGroupSize(props: PerspectiveDataLoadProps, bindingValues: any[], count: number) {
const originalBindingValue = props.bindingValues.find(v => _zip(v, bindingValues).every(([x, y]) => x == y));
if (originalBindingValue) {
const key = this.cache.stableStringify(originalBindingValue);
const group = new PerspectiveBindingGroup(this);
group.groupSize = count;
this.bindingGroups[key] = group;
}
}
}
export class PerspectiveCache {
@@ -54,7 +90,7 @@ export class PerspectiveCache {
}
if (!res) {
res = new PerspectiveCacheTable(props);
res = new PerspectiveCacheTable(props, this);
this.tables[tableKey] = res;
return res;
}