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perspctives: nested incremental loading

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This commit is contained in:
Jan Prochazka
2022-07-24 14:23:56 +02:00
parent 53ee1d87c2
commit d48c34a4a5
6 changed files with 174 additions and 32 deletions
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40
packages/datalib/src/PerspectiveDataLoader.ts
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@@ -9,6 +9,18 @@ export class PerspectiveDataLoader {
async loadGrouping(props: PerspectiveDataLoadProps) {
const { schemaName, pureName, bindingColumns, bindingValues, dataColumns } = props;
const bindingColumnExpressions = bindingColumns.map(
columnName =>
({
exprType: 'column',
columnName,
source: {
name: { schemaName, pureName },
},
} as Expression)
);
const select: Select = {
commandType: 'select',
from: {
@@ -26,16 +38,7 @@ export class PerspectiveDataLoader {
],
alias: '_perspective_group_size_',
},
...bindingColumns.map(
columnName =>
({
exprType: 'column',
columnName,
source: {
name: { schemaName, pureName },
},
} as Expression)
),
...bindingColumnExpressions,
],
};
if (bindingColumns?.length == 1) {
@@ -48,10 +51,12 @@ export class PerspectiveDataLoader {
name: { schemaName, pureName },
},
},
values: bindingValues,
values: bindingValues.map(x => x[0]),
};
}
select.groupBy = bindingColumnExpressions;
if (dbg?.enabled) {
dbg(`LOAD COUNTS, table=${props.pureName}, columns=${props.dataColumns?.join(',')}`);
}
@@ -63,7 +68,10 @@ export class PerspectiveDataLoader {
});
if (response.errorMessage) return response;
return response.rows;
return response.rows.map(row => ({
...row,
_perspective_group_size_: parseInt(row._perspective_group_size_),
}));
}
async loadData(props: PerspectiveDataLoadProps) {
@@ -101,12 +109,16 @@ export class PerspectiveDataLoader {
name: { schemaName, pureName },
},
},
values: bindingValues,
values: bindingValues.map(x => x[0]),
};
}
if (dbg?.enabled) {
dbg(`LOAD DATA, table=${props.pureName}, columns=${props.dataColumns?.join(',')}, range=${props.range?.offset},${props.range?.limit}`);
dbg(
`LOAD DATA, table=${props.pureName}, columns=${props.dataColumns?.join(',')}, range=${props.range?.offset},${
props.range?.limit
}`
);
}
const response = await this.apiCall('database-connections/sql-select', {