DescribeDatasets

Description

The DescribeDatasets service enables user to get information metadata about the datasets corresponding to the routing databases added to the Spectrum™ Technology Platform server. The response will be analogous with the metadata information present in the dataset path.

This feature is available as REST service only.

HTTP GET URL Format

All Datasets: The following format is used for HTTP GET requests for all datasets.

http://<server>:<port>/rest/Spatial/erm/v1/datasets.json

Single Dataset: The following format is used for HTTP GET requests for a single dataset.

http://<server>:<port>/rest/Spatial/erm/v1/datasets/<dataset_ID>.json

The dataset_ID is the ‘id’ corresponding to the elements in the ‘dataSets’ array from the DescribeDatabases service.

Response

The response of this service is a JSON array.

For all datasets, the length of the JSON array is the same as the total number of the dataset paths (with metadata available) added against the databases configured in Management Console. If a dataset path does not have metadata available, that entry will be ignored.

For a single dataset, the length of the JSON array will be one if and only if the metadata is available in the dataset path. Else, an empty JSON array will be returned.

Example

Two routing databases have been added in the Spectrum™ Technology Platform. The name and dataset paths of the databases are as follows:

US_NE: E:\\db\\ERM-US\\2014.09\\driving\\northeast
US: E:\\db\\ERM-US\\2014.09\\driving\\midwest and E:\\db\\ERM-US\\2014.09\\driving\\south

Sample Request (All Datasets):

http://<server>:<port>/rest/Spatial/erm/v1/datasets.json

Response:

{
  "dataSets": [{
    "component": "routing",
    "description": "USA Test dataset",
    "ext": {
      "bbox": [68.291015625, 7.9721977144, 97.55859375, 35.4606699515],
      "crs": "epsg:4326",
      "cvr": true,
      "historicTrafficTimeBuckets": {
        "amPeak": {
          "lowerBound": 700,
          "upperBound": 1000
        },
        "nightTime": {
          "lowerBound": 2200,
          "upperBound": 400
        },
        "offPeak": {
          "lowerBound": 1000,
          "upperBound": 1600
        },
        "pmPeak": {
          "lowerBound": 1600,
          "upperBound": 1900
        }
      },
      "locale": "EN",
      "type": "driving"
    },
    "id": "US dataset",
    "name": "USA",
    "product": "Spatial",
    "vintage": "September 2015"
  }]
}

Sample Request (Single Dataset):

http://<server>:<port>/rest/Spatial/erm/v1/datasets/US%20dataset.json

Response:

{
  "dataSets": [{
    "component": "routing",
    "description": "USA Test dataset",
    "ext": {
      "bbox": [68.291015625, 7.9721977144, 97.55859375, 35.4606699515],
      "crs": "epsg:4326",
      "cvr": true,
      "historicTrafficTimeBuckets": {
        "amPeak": {
          "lowerBound": 700,
          "upperBound": 1000
        },
        "nightTime": {
          "lowerBound": 2200,
          "upperBound": 400
        },
        "offPeak": {
          "lowerBound": 1000,
          "upperBound": 1600
        },
        "pmPeak": {
          "lowerBound": 1600,
          "upperBound": 1900
        }
      },
      "locale": "EN",
      "type": "driving"
    },
    "id": "US dataset",
    "name": "USA",
    "product": "Spatial",
    "vintage": "September 2015"
  }]
}