/
featureIndexRTreeResults.ts
75 lines (67 loc) · 1.76 KB
/
featureIndexRTreeResults.ts
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import { FeatureIndexResults } from '../../features/index/featureIndexResults';
import { RTreeIndexTableDao } from './rTreeIndexTableDao';
import { UserCustomResultSet } from '../../user/custom/userCustomResultSet';
import { FeatureRow } from '../../features/user/featureRow';
/**
* Iterable Feature Index Results to iterate on feature rows retrieved from
* RTree results
*/
export class FeatureIndexRTreeResults implements FeatureIndexResults {
/**
* RTree Index Table DAO
*/
private readonly dao: RTreeIndexTableDao;
/**
* Result Set
*/
private readonly resultSet: UserCustomResultSet;
/**
* Constructor
* @param dao RTree Index Table DAO
* @param resultSet result set
*/
public constructor(dao: RTreeIndexTableDao, resultSet: UserCustomResultSet) {
this.dao = dao;
this.resultSet = resultSet;
}
/**
* @inheritDoc
*/
[Symbol.iterator](): IterableIterator<FeatureRow> {
return this;
}
/**
* @inheritDoc
*/
public next(): { value: FeatureRow; done: boolean } {
const { value, done } = this.resultSet.next();
const featureRow = this.dao.getFeatureRowWithUserCustomRow(value);
return { value: featureRow, done };
}
public count(): number {
return this.resultSet.getCount();
}
/**
* @inheritDoc
*/
public ids(): IterableIterator<number> {
const dao = this.dao;
return {
[Symbol.iterator](): IterableIterator<number> {
return this;
},
next(): IteratorResult<number> {
const { value, done } = this.resultSet.next();
return {
value: dao.getRow(value).getId(),
done: done,
};
},
};
}
/**
* @inheritDoc
*/
// eslint-disable-next-line @typescript-eslint/no-empty-function
public close(): void {}
}