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query-viewer.service.js
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Fri, May 10, 03:09

query-viewer.service.js
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import { inject } from 'aurelia-framework';
import {QEPRepository} from 'repository/qep.repository';
import {QueryViewerConfig} from './query-viewer.config';
@inject(QEPRepository, QueryViewerConfig)
export class QueryViewerService {
constructor(repository, config) {
this.repository = repository;
this.config = config;
}
fetchPreviousQueries() {
return this.repository.fetchPreviousQueries();
}
getScreens(nodes, queries) {
return new Promise((resolve, reject) => {
const lastNodeIndex = nodes.sort().length;
const screens = [];
for (let i = 0; i < lastNodeIndex; i = i + this.config.maxNodesPerScreen) {
const numberOfNodesOnScreen = this.getNumberOfNodesOnScreen(nodes, i, this.config.maxNodesPerScreen);
const endIndex = numberOfNodesOnScreen - 1;
const screenId = this.getScreenId(nodes, i, endIndex);
const screenNodes = nodes.slice(i, numberOfNodesOnScreen);
const screenNodesToQueriesMap = this.mapQueriesToScreenNodes(screenNodes, queries, this.findQueriesForNode);
screens.push({
id: screenId,
nodes: screenNodes,
results: screenNodesToQueriesMap
});
}
resolve(screens);
});
}
mapQueriesToScreenNodes(nodes, queries) {
const results = [];
queries.forEach( (q, i) => {
const result = {
name: q.query.queryName,
id: q.query.networkId,
nodeResults: []
};
nodes.forEach(n => {
result.nodeResults.push(q.adaptersToResults.find( a => a.adapterNode === n));
});
results.push(result);
});
return results;
}
getNumberOfNodesOnScreen(nodes, startIndex) {
const numNodes = startIndex + this.config.maxNodesPerScreen;
return numNodes < nodes.length ? numNodes : nodes.length;
}
getScreenId(nodes, start, end) {
const startNode = nodes[start];
const endNode = nodes[end];
return String(startNode).substr(0, 1) + '-' + String(endNode).substr(0, 1);
}
}

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