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import { Injectable } from '@angular/core'
import { Response } from '@angular/http'
import { Observable } from 'rxjs/Observable'
export interface ResultList {
data: any[]
total: number
}
@Injectable()
export class RestExtractor {
extractDataBool (res: Response) {
return true
}
extractDataList (res: Response) {
const body = res.json()
const ret: ResultList = {
data: body.data,
total: body.total
}
return ret
}
extractDataGet (res: Response) {
return res.json()
}
handleError (res: Response) {
let text = 'Server error: '
text += res.text()
let json = ''
try {
json = res.json()
} catch (err) {
console.error('Cannot get JSON from response.')
}
const error = {
json,
text
}
console.error(error)
return Observable.throw(error)
}
}
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