// Copyright 2020 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

syntax = "proto3";

package google.cloud.talent.v4beta1;

import "google/api/annotations.proto";

option go_package = "google.golang.org/genproto/googleapis/cloud/talent/v4beta1;talent";
option java_multiple_files = true;
option java_outer_classname = "HistogramProto";
option java_package = "com.google.cloud.talent.v4beta1";
option objc_class_prefix = "CTS";

// The histogram request.
message HistogramQuery {
  // An expression specifies a histogram request against matching resources
  // (for example, jobs, profiles) for searches.
  //
  // See [SearchJobsRequest.histogram_queries][google.cloud.talent.v4beta1.SearchJobsRequest.histogram_queries] and
  // [SearchProfilesRequest.histogram_queries][google.cloud.talent.v4beta1.SearchProfilesRequest.histogram_queries] for details about syntax.
  string histogram_query = 1;
}

// Histogram result that matches [HistogramQuery][google.cloud.talent.v4beta1.HistogramQuery] specified in searches.
message HistogramQueryResult {
  // Requested histogram expression.
  string histogram_query = 1;

  // A map from the values of the facet associated with distinct values to the
  // number of matching entries with corresponding value.
  //
  // The key format is:
  //
  // * (for string histogram) string values stored in the field.
  // * (for named numeric bucket) name specified in `bucket()` function, like
  //   for `bucket(0, MAX, "non-negative")`, the key will be `non-negative`.
  // * (for anonymous numeric bucket) range formatted as `<low>-<high>`, for
  //   example, `0-1000`, `MIN-0`, and `0-MAX`.
  map<string, int64> histogram = 2;
}