Mercurial > hg > ng2-query-ismi

comparison app/query.service.ts @ 39:7578b21cdf2e

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make relation types configurable. relations can have custom labels for incoming or outgoing direction.
author casties
date Sun, 14 Feb 2016 19:40:07 +0100
parents e8dc6a4c6773
children 896ae7eefb33
comparison
equal deleted inserted replaced
38:313a5360c2d3 39:7578b21cdf2e
7 import {QueryMode, QUERY_MODES, FIRST_QUERY_MODES} from './query-mode'; 7 import {QueryMode, QUERY_MODES, FIRST_QUERY_MODES} from './query-mode';
8 import {QueryState} from './query-state'; 8 import {QueryState} from './query-state';
9 import {QueryStep} from './query-step'; 9 import {QueryStep} from './query-step';
10 import {getResultType} from './result-type'; 10 import {getResultType} from './result-type';
11 import {ISMI_RESULT_TYPES} from './ismi-result-types'; 11 import {ISMI_RESULT_TYPES} from './ismi-result-types';
12 import {getRelationType} from './ismi-relation-types';
12 13
13 @Injectable() 14 @Injectable()
14 export class QueryService { 15 export class QueryService {
15 16
16 public neo4jBaseUrl = 'https://ismi-dev.mpiwg-berlin.mpg.de/neo4j-ismi/db/data'; 17 //public neo4jBaseUrl = 'https://ismi-dev.mpiwg-berlin.mpg.de/neo4j-ismi/db/data';
17 //public neo4jBaseUrl = 'http://localhost:7474/db/data'; 18 public neo4jBaseUrl = 'http://localhost:7474/db/data';
18 public neo4jAuthentication = {'user': 'neo4j', 'password': 'neo5j'}; 19 public neo4jAuthentication = {'user': 'neo4j', 'password': 'neo5j'};
19 public typeAttribute = '_type'; 20 public typeAttribute = '_type';
20 public excludedAttributes = {}; 21 public excludedAttributes = {};
21 public invRelPrefix = '<- ';
22 public state: QueryState; 22 public state: QueryState;
23 public objectTypes: string[]; 23 public objectTypes: string[];
24 24
25 constructor(private _http: Http) { 25 constructor(private _http: Http) {
26 // init query state 26 // init query state
147 /* 147 /*
148 * step: relation type is 148 * step: relation type is
149 */ 149 */
150 if (mode === 'relation_is') { 150 if (mode === 'relation_is') {
151 nIdx += 1; 151 nIdx += 1;
152 var rel = params.relationType; 152 let rel = params.relationType;
153 if (rel.indexOf(this.invRelPrefix) == 0) { 153 if (rel.isOutgoing()) {
154 queryMatch += `-[:\`${rel.getName()}\`]->(n${nIdx})`;
155 } else {
154 // inverse relation 156 // inverse relation
155 rel = rel.substr(this.invRelPrefix.length); 157 queryMatch += `<-[:\`${rel.getName()}\`]-(n${nIdx})`;
156 queryMatch += `<-[:${rel}]-(n${nIdx})`; 158 }
157 } else { 159 queryReturn = `RETURN DISTINCT n${nIdx}`;
158 queryMatch += `-[:${rel}]->(n${nIdx})`;
159 }
160 queryReturn = `RETURN n${nIdx}`;
161 returnType = 'node'; 160 returnType = 'node';
162 } 161 }
163 162
164 /* 163 /*
165 * step: attribute contains(_norm) 164 * step: attribute contains(_norm)
290 */ 289 */
291 if (this.state.outRelsCypherQuery) { 290 if (this.state.outRelsCypherQuery) {
292 // outgoing aka forward relations 291 // outgoing aka forward relations
293 resIdx += 1; 292 resIdx += 1;
294 let rels = data.results[resIdx].data.map(elem => elem.row[0]) 293 let rels = data.results[resIdx].data.map(elem => elem.row[0])
295 .filter(elem => elem[0] != "_"); 294 .filter(elem => elem[0] != "_")
295 .map(elem => getRelationType(elem, true));
296 this.state.resultRelations = rels; 296 this.state.resultRelations = rels;
297 } 297 }
298 if (this.state.inRelsCypherQuery) { 298 if (this.state.inRelsCypherQuery) {
299 // incoming aka reverse relations 299 // incoming aka reverse relations
300 resIdx += 1; 300 resIdx += 1;
301 let rels = data.results[resIdx].data.map(elem => elem.row[0]) 301 let rels = data.results[resIdx].data.map(elem => elem.row[0])
302 .filter(elem => elem[0] != "_") 302 .filter(elem => elem[0] != "_")
303 .map((r) => this.invRelPrefix + r); 303 .map(elem => getRelationType(elem, false));
304 this.state.resultRelations = this.state.resultRelations.concat(rels); 304 this.state.resultRelations = this.state.resultRelations.concat(rels);
305 } 305 }
306 }, 306 },
307 err => console.error("neo4j result error=", err), 307 err => console.error("neo4j result error=", err),
308 () => console.debug('neo4j result query Complete') 308 () => console.debug('neo4j result query Complete')