Mercurial > hg > ng2-query-ismi

comparison app/query.service.ts @ 7:6cd6c09032aa

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object type query with results!
author Robert Casties <casties@mpiwg-berlin.mpg.de>
date Fri, 15 Jan 2016 20:00:47 +0100
parents 9f5473536a98
children fa646ee46c19
comparison
equal deleted inserted replaced
6:9f5473536a98 7:6cd6c09032aa
8 import {QueryStep} from './query-step'; 8 import {QueryStep} from './query-step';
9 9
10 @Injectable() 10 @Injectable()
11 export class QueryService { 11 export class QueryService {
12 12
13 public queryState: QueryState; 13 public state: QueryState;
14 14
15 public ismiObjectTypes; 15 public ismiObjectTypes;
16 16
17 public QUERY_MODES: QueryMode[] = [ 17 public QUERY_MODES: QueryMode[] = [
18 {id: 'type_is', label:'Object type is'}, 18 {id: 'type_is', label:'Object type is'},
19 {id: 'att_contains', label: 'Attribute contains'}]; 19 {id: 'att_contains', label: 'Attribute contains'}];
20 20
21 constructor(private _http: Http) { 21 constructor(private _http: Http) {
22 this.queryState = { 22 this.state = {
23 'steps': [], 23 'steps': [],
24 'cypherQuery': '', 24 'cypherQuery': '',
25 'cyperParams': {}, 25 'cypherParams': {},
26 'results': [], 26 'results': [],
27 numResults: 0}; 27 'resultTypes': '',
28 'numResults': 0
29 };
30 }
31
32 getState() {
33 return this.state;
28 } 34 }
29 35
30 getQueryModes(): QueryMode[] { 36 getQueryModes(): QueryMode[] {
31 return this.QUERY_MODES; 37 return this.QUERY_MODES;
32 } 38 }
58 () => console.debug('neo4j query Complete') 64 () => console.debug('neo4j query Complete')
59 ); 65 );
60 } 66 }
61 67
62 setQueryStep(index: number, step: QueryStep) { 68 setQueryStep(index: number, step: QueryStep) {
63 this.queryState.steps[index] = step; 69 this.state.steps[index] = step;
64 this.createCypherQuery(); 70 this.createCypherQuery();
65 } 71 }
66 72
67 createCypherQuery() { 73 createCypherQuery() {
68 var cypher = ''; 74 var cypher = '';
69 var step = this.queryState.steps[0]; 75 var returnType = '';
76 var step = this.state.steps[0];
70 if (step.mode.id === 'type_is') { 77 if (step.mode.id === 'type_is') {
71 cypher = `MATCH (e:${step.objectType}) return e`; 78 cypher = `MATCH (e:${step.objectType}) return e`;
79 returnType = 'node';
72 } 80 }
73 81
74 this.queryState.cypherQuery = cypher; 82 this.state.cypherQuery = cypher;
83 this.state.resultTypes = returnType;
84 }
85
86 updateQuery() {
87 this.createCypherQuery();
88 var query = this.state.cypherQuery;
89 var params = this.state.cypherParams;
90 var res = this.fetchCypherResult(query, params);
91 res.subscribe(
92 data => {
93 console.debug("neo4j data=", data);
94 this.state.results = data.data.map(elem => elem[0]);
95 this.state.numResults = this.state.results.length;
96 },
97 err => console.error("neo4j error=", err),
98 () => console.debug('neo4j query Complete')
99 );
75 } 100 }
76 101
77 fetchCypherResult(query: string, params = {}) { 102 fetchCypherResult(query: string, params = {}) {
78 var headers = new Headers(); 103 var headers = new Headers();
79 headers.append('Authorization', 'Basic ' + btoa('neo4j' + ':' + 'neo5j')); 104 headers.append('Authorization', 'Basic ' + btoa('neo4j' + ':' + 'neo5j'));