How to Run Partial Match Atlas Search Queries

In Atlas, go to the Clusters page for your project.

1. If it is not already displayed, select the organization that contains your desired project from the Organizations menu in the navigation bar.

2. If it is not already displayed, select your desired project from the Projects menu in the navigation bar.

3. If the Clusters page is not already displayed, click Database in the sidebar.

Go to the Atlas Search page for your cluster.

You can go the Atlas Search page from the sidebar, the Data Explorer, or your cluster details page.

Go to the Search Tester.

Click the Query button to the right of the index to query.

View and edit the query syntax.

Click Edit Query to view a default query syntax sample in JSON format.

Run the following Atlas Search query using the operator for which you created the index.

The following query uses the operator to query the plot field of the sample_mflix.movies collection.

Copy and paste the following query into the Query Editor, and then click the Search button in the Query Editor.

1
[
2
  {
3
    "$search": {
4
      "index": "partial-match-tutorial",
5
      "autocomplete": {
6
        "path": "plot",
7
        "query": "new purchase",
8
        "tokenOrder": "any",
9
        "fuzzy": {
10
          "maxEdits": 2,
11
          "prefixLength": 1,
12
          "maxExpansions": 256
13
        }
14
      },
15
      "highlight": {
16
          "path": "plot"
17
      }
18
    }
19
  }
20
]

SCORE: 3  _id:  "573a13a4f29313caabd112f0"
  A divorced woman and her diabetic daughter take refuge in their newly-purchased house's safe room, when three men break-in, searching for a missing fortune.
  Matching fields: plot
SCORE: 3  _id:  "573a13d1f29313caabd8e209"
  A lonely writer develops an unlikely relationship with his newly purchased operating system that's designed to meet his every need.
  Matching fields: plot
SCORE: 2  _id:  "573a13bef29313caabd5b62d"
  Set in the near future when artificial organs can be bought on credit, it revolves around a man who struggles to make the payments on a heart he has purchased. He must
  Matching fields: plot
SCORE: 2  _id:  "573a13b3f29313caabd3c91e"
  He is "purchased" by a wealthy television producer and taken to a desolate island where he must fight to the death against nine other condemned killers from all corners of the world, with freedom going to the sole survivor.
  Matching fields: plot
SCORE: 2  _id:  "573a1398f29313caabceb931"
  A country boy becomes the head of a gang through the purchase of some lucky roses from an old lady.
  Matching fields: plot, plot
SCORE: 1  _id:  "573a13a7f29313caabd1b5ab"
  An illegal Nigerian immigrant discovers the unpalatable side of London life.
  Matching fields: plot
SCORE: 1  _id:  "573a13a7f29313caabd1b5c0"
  A young dropout falls in love with a nightclub dancer...
  Matching fields: plot
SCORE: 1  _id:  "573a13a7f29313caabd1b62f"
  In 1990, to protect his fragile mother from a fatal shock after a long coma, a young man must keep her from learning that her beloved nation of East Germany as she knew it has disappeared.
  Matching fields: plot
SCORE: 1  _id:  "573a13a7f29313caabd1b6af"
  Gadget once again has to fight his arch nemesis, Claw.
  Matching fields: plot

1
[
2
  {
3
    "$search": {
4
      "index": "partial-match-tutorial",
5
      "phrase": {
6
        "path": "plot",
7
        "query": "new purpose",
8
        "slop": 5
9
      },
10
      "highlight": {
11
        "path": "plot"
12
      }
13
    }
14
  }
15
]

SCORE: 3.7209534645080566  _id:  "573a13b1f29313caabd37ae6"
  The true story of Richard Pimentel, a brilliant public speaker with a troubled past, who returns from Vietnam severely hearing -impaired and finds a new purpose in his landmark efforts on the behalf of Americans with disabilities.
  Matching fields: plot
SCORE: 1.1507558822631836  _id:  "573a13bdf29313caabd58a26"
  But without a hero, he loses all purpose and must find new meaning to his life.
  Matching fields: plot
SCORE: 1.0041160583496094  _id:  "573a1396f29313caabce5197"
  An aging Pat Garrett is hired as a lawman on behalf of a group of wealthy New Mexico cattle barons--his sole purpose being to bring down his old friend Billy the Kid.
  Matching fields: plot

1
[
2
  {
3
    "$search": {
4
      "index": "partial-match-tutorial",
5
      "regex": {
6
        "path": "plot",
7
        "query": "(.*)new(.*) pur(.*)"
8
      }
9
    }
10
  }
11
]

SCORE: 1  _id:  "573a1397f29313caabce77d9"
  fullplot: "After the Rebel base on the icy planet Hoth is taken over by the empir…"
  imdb: Object
  year: 1980
SCORE: 1  _id:  "573a1398f29313caabceb893"
  plot: "The new owner of the Cleveland Indians puts together a purposely horri…"
  genres: Array
  runtime: 107
SCORE: 1  _id:  "573a13b1f29313caabd37ae6"
  plot: "The true story of Richard Pimentel, a brilliant public speaker with a …"
  genres: Array
  runtime: 94
SCORE: 1  _id:  "573a13d1f29313caabd8e209"
  fullplot: "Theodore is a lonely man in the final stages of his divorce. When he's…"
  imdb: Object
  year: 2013
SCORE: 1  _id:  "573a13dcf29313caabdb107a"
  plot: "An adrenaline junkie walks away from a whirlwind romance and embraces …"
  genres: Array
  runtime: 146

1
[
2
  {
3
    "$search": {
4
      "index": "partial-match-tutorial",
5
      "wildcard": {
6
        "path": "plot",
7
        "query": "*new* pur*"
8
      }
9
    }
10
  }
11
]

SCORE: 1  _id:  "573a1397f29313caabce77d9"
  fullplot: "After the Rebel base on the icy planet Hoth is taken over by the empir…"
  imdb: Object
  year: 1980
SCORE: 1  _id:  "573a1398f29313caabceb893"
  plot: "The new owner of the Cleveland Indians puts together a purposely horri…"
  genres: Array
  runtime: 107
SCORE: 1  _id:  "573a13b1f29313caabd37ae6"
  plot: "The true story of Richard Pimentel, a brilliant public speaker with a …"
  genres: Array
  runtime: 94
SCORE: 1  _id:  "573a13d1f29313caabd8e209"
  fullplot: "Theodore is a lonely man in the final stages of his divorce. When he's…"
  imdb: Object
  year: 2013
SCORE: 1  _id:  "573a13dcf29313caabdb107a"
  plot: "An adrenaline junkie walks away from a whirlwind romance and embraces …"
  genres: Array
  runtime: 146

Expand your query results.

The Search Tester might not display all the fields in the documents it returns. To view all the fields, including the field that you specify in the query path, expand the document in the results.

Connect to your cluster in mongosh.

Open mongosh in a terminal window and connect to your cluster. For detailed instructions on connecting, see Connect via mongosh.

Use the sample_mflix database.

Run the following command at mongosh prompt:

use sample_mflix

Run the following Atlas Search query using the operator for which you created the index.

The following query uses the operator to query the plot field of the sample_mflix.movies collection. The query includes a:

• $limit stage to limit the output to 5 results

• $project stage to exclude all fields except title and plot

1
db.movies.aggregate([
2
  {
3
    "$search": {
4
      "index": "partial-match-tutorial",
5
      "autocomplete": {
6
        "path": "plot",
7
        "query": "new purchase",
8
        "tokenOrder": "any",
9
        "fuzzy": {
10
          "maxEdits": 2,
11
          "prefixLength": 1,
12
          "maxExpansions": 256
13
        }
14
      },
15
      "highlight": {
16
          "path": "plot"
17
      }
18
    }
19
  },
20
  {
21
    "$limit": 5
22
  },
23
  {
24
    "$project": {
25
      "_id": 0,
26
      "title": 1,
27
      "plot": 1,
28
      "highlights": { "$meta": "searchHighlights" }
29
    }
30
  }
31
])

[
  {
    plot: "A divorced woman and her diabetic daughter take refuge in their newly-purchased house's safe room, when three men break-in, searching for a missing fortune.",
    title: 'Panic Room',
    highlights: [
      {
        score: 4.364492893218994,
        path: 'plot',
        texts: [
          {
            value: 'A divorced woman and her diabetic daughter take refuge in their ',
            type: 'text'
          },
          { value: "newly-purchased house's safe", type: 'hit' },
          {
            value: ' room, when three men break-in, searching for a missing fortune.',
            type: 'text'
          }
        ]
      }
    ]
  },
  {
    plot: "A lonely writer develops an unlikely relationship with his newly purchased operating system that's designed to meet his every need.",
    title: 'Her',
    highlights: [
      {
        score: 4.198050022125244,
        path: 'plot',
        texts: [
          {
            value: 'A lonely writer develops an unlikely relationship with his ',
            type: 'text'
          },
          { value: 'newly purchased operating system', type: 'hit' },
          {
            value: " that's designed to meet his every ",
            type: 'text'
          },
          { value: 'need', type: 'hit' },
          { value: '.', type: 'text' }
        ]
      }
    ]
  },
  {
    plot: "Set in the near future when artificial organs can be bought on credit, it revolves around a man who struggles to make the payments on a heart he has purchased. He must therefore go on the run before said ticker is repossessed.",
    title: 'Repo Men',
    highlights: [
      {
        score: 2.6448397636413574,
        path: 'plot',
        texts: [
          { value: 'Set in the ', type: 'text' },
          { value: 'near future when', type: 'hit' },
          { value: ' artificial organs can be bought on credit, it revolves around a man who struggles to make the payments on a heart he has ', type: 'text' },
          { value: 'purchased. He must', type: 'hit' }
        ]
      }
    ]
  },
  {
    plot: 'A psychologically troubled novelty supplier is nudged towards a romance with an English woman, all the while being extorted by a phone-sex line run by a crooked mattress salesman, and purchasing stunning amounts of pudding.',
    title: 'Punch-Drunk Love',
    highlights: [
      {
        score: 1.2451990842819214,
        path: 'plot',
        texts: [
          { value: 'A psychologically troubled ', type: 'text' },
          { value: 'novelty supplier is', type: 'hit' },
          { value: ' ', type: 'text' },
          { value: 'nudged towards a', type: 'hit' },
          {
            value: ' romance with an English woman, all the while being extorted by a phone-sex line run by a crooked mattress salesman, and ',
            type: 'text'
          },
          { value: 'purchasing stunning amounts', type: 'hit' },
          { value: ' of pudding.', type: 'text' }
        ]
      }
    ]
  },
  {
    plot: 'Jack Conrad is awaiting the death penalty in a corrupt Central American prison. He is "purchased" by a wealthy television producer and taken to a desolate island where he must fight to the death against nine other condemned killers from all corners of the world, with freedom going to the sole survivor.',
    title: 'The Condemned',
    highlights: [
      {
        score: 2.94378924369812,
        path: 'plot',
        texts: [
          { value: 'He is "', type: 'text' },
          { value: 'purchased" by a', type: 'hit' },
          {
            value: ' wealthy television producer and taken to a desolate island where he must fight to the death against ',
            type: 'text'
          },
          { value: 'nine other condemned', type: 'hit' },
          {
            value: ' killers from all corners of the world, with freedom going to the sole survivor.',
            type: 'text'
          }
        ]
      }
    ]
  }
]

1
db.movies.aggregate([
2
  {
3
    "$search": {
4
      "index": "partial-match-tutorial",
5
      "phrase": {
6
        "path": "plot",
7
        "query": "new purpose",
8
        "slop": 5
9
      },
10
      "highlight": {
11
        "path": "plot"
12
      }
13
    }
14
  },
15
  {
16
    "$limit": 5
17
  },
18
  {
19
    "$project": {
20
      "_id": 0,
21
      "plot": 1,
22
      "title": 1,
23
      "highlights": { "$meta": "searchHighlights" }
24
    }
25
  }
26
])

[
  {
    plot: 'The true story of Richard Pimentel, a brilliant public speaker with a troubled past, who returns from Vietnam severely hearing -impaired and finds a new purpose in his landmark efforts on the behalf of Americans with disabilities.',
    title: 'Music Within',
    highlights: [
      {
        score: 1.9394469261169434,
        path: 'plot',
        texts: [
          { value: 'The true story of Richard Pimentel, a brilliant public speaker with a troubled past, who returns from Vietnam severely hearing -impaired and finds a ', type: 'text' },
          { value: 'new', type: 'hit' },
          { value: ' ', type: 'text' },
          { value: 'purpose', type: 'hit' },
          { value: ' in his landmark efforts on the behalf of Americans with disabilities.', type: 'text' }
        ]
      }
    ]
  },
  {
    plot: 'The supervillain Megamind finally defeats his nemesis, the superhero Metro Man. But without a hero, he loses all purpose and must find new meaning to his life.',
    title: 'Megamind',
    highlights: [
      {
        score: 2.90376877784729,
        path: 'plot',
        texts: [
          { value: 'But without a hero, he loses all ', type: 'text' },
          { value: 'purpose', type: 'hit' },
          { value: ' and must find ', type: 'text' },
          { value: 'new', type: 'hit' },
          { value: ' meaning to his life.', type: 'text' }
        ]
      }
    ]
  },
  {
    plot: 'An aging Pat Garrett is hired as a lawman on behalf of a group of wealthy New Mexico cattle barons--his sole purpose being to bring down his old friend Billy the Kid.',
    title: 'Pat Garrett & Billy the Kid',
    highlights: [
      {
        score: 2.115748405456543,
        path: 'plot',
        texts: [
          { value: 'An aging Pat Garrett is hired as a lawman on behalf of a group of wealthy ', type: 'text' },
          { value: 'New', type: 'hit' },
          { value: ' Mexico cattle barons--his sole ', type: 'text' },
          { value: 'purpose', type: 'hit' },
          { value: ' being to bring down his old friend Billy the Kid.', type: 'text' }
        ]
      }
    ]
  }
]

1
db.movies.aggregate([
2
  {
3
    "$search": {
4
      "index": "partial-match-tutorial",
5
      "regex": {
6
        "path": "plot",
7
        "query": "(.*)new(.*) pur(.*)"
8
      }
9
    }
10
  },
11
  {
12
    $limit: 5
13
  },
14
  {
15
    $project: {
16
      "_id": 0,
17
      "plot": 1,
18
      "title": 1
19
    }
20
  }
21
])

[
  {
    plot: 'After the rebels have been brutally overpowered by the Empire on their newly established base, Luke Skywalker takes advanced Jedi training with Master Yoda, while his friends are pursued by Darth Vader as part of his plan to capture Luke.',
    title: 'Star Wars: Episode V - The Empire Strikes Back'
  },
  {
    plot: "The new owner of the Cleveland Indians puts together a purposely horrible team so they'll lose and she can move the team. But when the plot is uncovered, they start winning just to spite her.",
    title: 'Major League'
  },
  {
    plot: 'The true story of Richard Pimentel, a brilliant public speaker with a troubled past, who returns from Vietnam severely hearing -impaired and finds a new purpose in his landmark efforts on the behalf of Americans with disabilities.',
    title: 'Music Within'
  },
  {
    plot: "A lonely writer develops an unlikely relationship with his newly purchased operating system that's designed to meet his every need.",
    title: 'Her'
  },
  {
    plot: 'An adrenaline junkie walks away from a whirlwind romance and embraces a new life as a thief, though he soon finds himself pursued by veteran police officer and engaged in a turf war with a local gangster.',
    title: 'Kick'
  }
]

1
db.movies.aggregate([
2
  {
3
    "$search": {
4
      "index": "partial-match-tutorial",
5
      "wildcard": {
6
        "path": "plot",
7
        "query": "*new* pur*"
8
      }
9
    }
10
  },
11
  {
12
    "$limit": 5
13
  },
14
  {
15
    "$project": {
16
      "_id": 0,
17
      "plot": 1
18
    }
19
  }
20
])

[
  {
    plot: 'After the rebels have been brutally overpowered by the Empire on their newly established base, Luke Skywalker takes advanced Jedi training with Master Yoda, while his friends are pursued by Darth Vader as part of his plan to capture Luke.',
    title: 'Star Wars: Episode V - The Empire Strikes Back'
  },
  {
    plot: "The new owner of the Cleveland Indians puts together a purposely horrible team so they'll lose and she can move the team. But when the plot is uncovered, they start winning just to spite her.",
    title: 'Major League'
  },
  {
    plot: 'The true story of Richard Pimentel, a brilliant public speaker with a troubled past, who returns from Vietnam severely hearing -impaired and finds a new purpose in his landmark efforts on the behalf of Americans with disabilities.',
    title: 'Music Within'
  },
  {
    plot: "A lonely writer develops an unlikely relationship with his newly purchased operating system that's designed to meet his every need.",
    title: 'Her'
  },
  {
    plot: 'An adrenaline junkie walks away from a whirlwind romance and embraces a new life as a thief, though he soon finds himself pursued by veteran police officer and engaged in a turf war with a local gangster.',
    title: 'Kick'
  }
]

Connect to your cluster in MongoDB Compass.

Open MongoDB Compass and connect to your cluster. For detailed instructions on connecting, see Connect via Compass.

Use the movies collection in the sample_mflix database.

On the Database screen, click the sample_mflix database, then click the movies collection.

Run the following Atlas Search query using the operator for which you created the index.

The following query uses the operator to query the plot field of the sample_mflix.movies collection. The query includes a:

• $limit stage to limit the output to 5 results

• $project stage to exclude all fields except title and plot

To run this query in MongoDB Compass:

1. Click the Aggregations tab.

2. Click Select..., then configure each of the following pipeline stages by selecting the stage from the dropdown and adding the query for that stage. Click Add Stage to add additional stages.

   autocomplete

   phrase

   regex

   wildcard

   The query allows the following for matching the query string new purchase to a word in the field:

   • Allows the words new and purchase to appear anywhere in the plot field.

   • Allows two character variation in the query string to match the query to a word in the field, but doesn't allow the first character in the query string to change.

   • Allows up to two hundred and fifty six similar terms to be considered.

   Pipeline Stage	Query
   $search	{ "index": "partial-match-tutorial", "autocomplete": { "path": "plot", "query": "new purchase", "tokenOrder": "any", "fuzzy": { "maxEdits": 2, "prefixLength": 1, "maxExpansions": 256 } }, "highlight": { "path": "plot" } }
   $limit	5
   $project	{ "_id": 0, "title": 1, "plot": 1, "highlights": { "$meta": "searchHighlights" } }

   The query specifies the query string new purpose with a positional distance of up to 5 between new and purpose.

   Pipeline Stage	Query
   $search	{ "index": "partial-match-tutorial", "phrase": { "path": "plot", "query": "new purpose", "slop": 5 }, "highlight": { "path": "plot" } }
   $limit	5
   $project	{ "_id": 0, "title": 1, "plot": 1, "highlights": { "$meta": "searchHighlights" } }

   The query uses (.*) regular expression to match any number of characters with the partial query string.

   Pipeline Stage	Query
   $search	{ "index": "partial-match-tutorial", "regex": { "path": "plot", "query": "(.*)new(.*) pur(.*)" } }
   $limit	5
   $project	{ "_id": 0, "title": 1, "plot": 1 }

   The query uses * in the query string to match 0 or more characters before and after the specified words in the partial query string.

   Pipeline Stage	Query
   $search	{ "index": "partial-match-tutorial", "wildcard": { "path": "plot", "query": "*new* pur*" } }
   $limit	5
   $project	{ "_id": 0, "title": 1, "plot": 1 }

If you enabled Auto Preview, MongoDB Compass displays the following documents next to the $project pipeline stage:

1
[
2
  {
3
    plot: "A divorced woman and her diabetic daughter take refuge in their newly-purchased house's safe room, when three men break-in, searching for a missing fortune.",
4
    title: 'Panic Room',
5
    highlights: [
6
      {
7
        score: 4.364492893218994,
8
        path: 'plot',
9
        texts: [
10
          {
11
            value: 'A divorced woman and her diabetic daughter take refuge in their ',
12
            type: 'text'
13
          },
14
          { value: "newly-purchased house's safe", type: 'hit' },
15
          {
16
            value: ' room, when three men break-in, searching for a missing fortune.',
17
            type: 'text'
18
          }
19
        ]
20
      }
21
    ]
22
  },
23
  {
24
    plot: "A lonely writer develops an unlikely relationship with his newly purchased operating system that's designed to meet his every need.",
25
    title: 'Her',
26
    highlights: [
27
      {
28
        score: 4.198050022125244,
29
        path: 'plot',
30
        texts: [
31
          {
32
            value: 'A lonely writer develops an unlikely relationship with his ',
33
            type: 'text'
34
          },
35
          { value: 'newly purchased operating system', type: 'hit' },
36
          {
37
            value: " that's designed to meet his every ",
38
            type: 'text'
39
          },
40
          { value: 'need', type: 'hit' },
41
          { value: '.', type: 'text' }
42
        ]
43
      }
44
    ]
45
  },
46
  {
47
    plot: "Set in the near future when artificial organs can be bought on credit, it revolves around a man who struggles to make the payments on a heart he has purchased. He must therefore go on the run before said ticker is repossessed.",
48
    title: 'Repo Men',
49
    highlights: [
50
      {
51
        score: 2.6448397636413574,
52
        path: 'plot',
53
        texts: [
54
          { value: 'Set in the ', type: 'text' },
55
          { value: 'near future when', type: 'hit' },
56
          { value: ' artificial organs can be bought on credit, it revolves around a man who struggles to make the payments on a heart he has ', type: 'text' },
57
          { value: 'purchased. He must', type: 'hit' }
58
        ]
59
      }
60
    ]
61
  },
62
  {
63
    plot: 'A psychologically troubled novelty supplier is nudged towards a romance with an English woman, all the while being extorted by a phone-sex line run by a crooked mattress salesman, and purchasing stunning amounts of pudding.',
64
    title: 'Punch-Drunk Love',
65
    highlights: [
66
      {
67
        score: 1.2451990842819214,
68
        path: 'plot',
69
        texts: [
70
          { value: 'A psychologically troubled ', type: 'text' },
71
          { value: 'novelty supplier is', type: 'hit' },
72
          { value: ' ', type: 'text' },
73
          { value: 'nudged towards a', type: 'hit' },
74
          {
75
            value: ' romance with an English woman, all the while being extorted by a phone-sex line run by a crooked mattress salesman, and ',
76
            type: 'text'
77
          },
78
          { value: 'purchasing stunning amounts', type: 'hit' },
79
          { value: ' of pudding.', type: 'text' }
80
        ]
81
      }
82
    ]
83
  },
84
  {
85
    plot: 'Jack Conrad is awaiting the death penalty in a corrupt Central American prison. He is "purchased" by a wealthy television producer and taken to a desolate island where he must fight to the death against nine other condemned killers from all corners of the world, with freedom going to the sole survivor.',
86
    title: 'The Condemned',
87
    highlights: [
88
      {
89
        score: 2.94378924369812,
90
        path: 'plot',
91
        texts: [
92
          { value: 'He is "', type: 'text' },
93
          { value: 'purchased" by a', type: 'hit' },
94
          {
95
            value: ' wealthy television producer and taken to a desolate island where he must fight to the death against ',
96
            type: 'text'
97
          },
98
          { value: 'nine other condemned', type: 'hit' },
99
          {
100
            value: ' killers from all corners of the world, with freedom going to the sole survivor.',
101
            type: 'text'
102
          }
103
        ]
104
      }
105
    ]
106
  }
107
]

1
[
2
  {
3
    plot: 'The true story of Richard Pimentel, a brilliant public speaker with a troubled past, who returns from Vietnam severely hearing -impaired and finds a new purpose in his landmark efforts on the behalf of Americans with disabilities.',
4
    title: 'Music Within',
5
    highlights: [
6
      {
7
        score: 1.9394469261169434,
8
        path: 'plot',
9
        texts: [
10
          { value: 'The true story of Richard Pimentel, a brilliant public speaker with a troubled past, who returns from Vietnam severely hearing -impaired and finds a ', type: 'text' },
11
          { value: 'new', type: 'hit' },
12
          { value: ' ', type: 'text' },
13
          { value: 'purpose', type: 'hit' },
14
          { value: ' in his landmark efforts on the behalf of Americans with disabilities.', type: 'text' }
15
        ]
16
      }
17
    ]
18
  },
19
  {
20
    plot: 'The supervillain Megamind finally defeats his nemesis, the superhero Metro Man. But without a hero, he loses all purpose and must find new meaning to his life.',
21
    title: 'Megamind',
22
    highlights: [
23
      {
24
        score: 2.90376877784729,
25
        path: 'plot',
26
        texts: [
27
          { value: 'But without a hero, he loses all ', type: 'text' },
28
          { value: 'purpose', type: 'hit' },
29
          { value: ' and must find ', type: 'text' },
30
          { value: 'new', type: 'hit' },
31
          { value: ' meaning to his life.', type: 'text' }
32
        ]
33
      }
34
    ]
35
  },
36
  {
37
    plot: 'An aging Pat Garrett is hired as a lawman on behalf of a group of wealthy New Mexico cattle barons--his sole purpose being to bring down his old friend Billy the Kid.',
38
    title: 'Pat Garrett & Billy the Kid',
39
    highlights: [
40
      {
41
        score: 2.115748405456543,
42
        path: 'plot',
43
        texts: [
44
          { value: 'An aging Pat Garrett is hired as a lawman on behalf of a group of wealthy ', type: 'text' },
45
          { value: 'New', type: 'hit' },
46
          { value: ' Mexico cattle barons--his sole ', type: 'text' },
47
          { value: 'purpose', type: 'hit' },
48
          { value: ' being to bring down his old friend Billy the Kid.', type: 'text' }
49
        ]
50
      }
51
    ]
52
  }
53
]

1
[
2
  {
3
    plot: 'After the rebels have been brutally overpowered by the Empire on their newly established base, Luke Skywalker takes advanced Jedi training with Master Yoda, while his friends are pursued by Darth Vader as part of his plan to capture Luke.',
4
    title: 'Star Wars: Episode V - The Empire Strikes Back'
5
  },
6
  {
7
    plot: "The new owner of the Cleveland Indians puts together a purposely horrible team so they'll lose and she can move the team. But when the plot is uncovered, they start winning just to spite her.",
8
    title: 'Major League'
9
  },
10
  {
11
    plot: 'The true story of Richard Pimentel, a brilliant public speaker with a troubled past, who returns from Vietnam severely hearing -impaired and finds a new purpose in his landmark efforts on the behalf of Americans with disabilities.',
12
    title: 'Music Within'
13
  },
14
  {
15
    plot: "A lonely writer develops an unlikely relationship with his newly purchased operating system that's designed to meet his every need.",
16
    title: 'Her'
17
  },
18
  {
19
    plot: 'An adrenaline junkie walks away from a whirlwind romance and embraces a new life as a thief, though he soon finds himself pursued by veteran police officer and engaged in a turf war with a local gangster.',
20
    title: 'Kick'
21
  }
22
]

1
[
2
  {
3
    plot: 'After the rebels have been brutally overpowered by the Empire on their newly established base, Luke Skywalker takes advanced Jedi training with Master Yoda, while his friends are pursued by Darth Vader as part of his plan to capture Luke.',
4
    title: 'Star Wars: Episode V - The Empire Strikes Back'
5
  },
6
  {
7
    plot: "The new owner of the Cleveland Indians puts together a purposely horrible team so they'll lose and she can move the team. But when the plot is uncovered, they start winning just to spite her.",
8
    title: 'Major League'
9
  },
10
  {
11
    plot: 'The true story of Richard Pimentel, a brilliant public speaker with a troubled past, who returns from Vietnam severely hearing -impaired and finds a new purpose in his landmark efforts on the behalf of Americans with disabilities.',
12
    title: 'Music Within'
13
  },
14
  {
15
    plot: "A lonely writer develops an unlikely relationship with his newly purchased operating system that's designed to meet his every need.",
16
    title: 'Her'
17
  },
18
  {
19
    plot: 'An adrenaline junkie walks away from a whirlwind romance and embraces a new life as a thief, though he soon finds himself pursued by veteran police officer and engaged in a turf war with a local gangster.',
20
    title: 'Kick'
21
  }
22
]

Set up and initialize the .NET/C# project for the query.

1. Create a new directory called partial-match-example and initialize your project with the dotnet new command.

   mkdir partial-match-example
   cd partial-match-example
   dotnet new console

2. Add the .NET/C# Driver to your project as a dependency.

   dotnet add package MongoDB.Driver

Create the query in the Program.cs file.

1. Replace the contents of the Program.cs file with the following code.

   The code example performs the following tasks:

   • Imports mongodb packages and dependencies.

   • Establishes a connection to your Atlas cluster.

   • Runs a query that uses:

     • $search stage to look for a term

     • $limit stage to limit the output to 5 results

     • $project stage to exclude all fields except title

       and plot

   • Iterates over the cursor to print the documents that match the query.

   autocomplete

   phrase

   regex

   wildcard

   The query allows the following for matching the query string new purchase to a word in the field:

   • Allows the words new and purchase to appear anywhere in the plot field.

   • Allows two character variation in the query string to match the query to a word in the field, but doesn't allow the first character in the query string to change.

   • Allows up to two hundred and fifty six similar terms to be considered.

   1
   using MongoDB.Bson;
   2
   using MongoDB.Bson.Serialization.Attributes;
   3
   using MongoDB.Bson.Serialization.Conventions;
   4
   using MongoDB.Driver;
   5
   using MongoDB.Driver.Search;
   6
   7
   public class PartialAutocomplete 
   8
   {
   9
       private const string MongoConnectionString = "<connection-string>";
   10
   11
       public static void Main(string[] args) {
   12
           // allow automapping of the camelCase database fields to our MovieDocument
   13
           var camelCaseConvention = new ConventionPack { new CamelCaseElementNameConvention() };
   14
           ConventionRegistry.Register("CamelCase", camelCaseConvention, type => true);
   15
   16
           // connect to your Atlas cluster
   17
           var mongoClient = new MongoClient(MongoConnectionString);
   18
           var mflixDatabase = mongoClient.GetDatabase("sample_mflix");
   19
           var moviesCollection = mflixDatabase.GetCollection<MovieDocument>("movies");
   20
   21
           // define fuzzy options
   22
           SearchFuzzyOptions fuzzyOptions = new SearchFuzzyOptions()
   23
               {
   24
                   MaxEdits = 2,
   25
                   PrefixLength = 1,
   26
                   MaxExpansions = 256
   27
               };
   28
   29
           // define and run pipeline
   30
           var results = moviesCollection.Aggregate()
   31
               .Search(Builders<MovieDocument>.Search.Autocomplete(movie => movie.Plot, "new purchase", SearchAutocompleteTokenOrder.Any, fuzzy: fuzzyOptions), new SearchHighlightOptions<MovieDocument>(movie => movie.Plot),
   32
                   indexName: "partial-match-tutorial")
   33
               .Project<MovieDocument>(Builders<MovieDocument>.Projection
   34
                   .Include(movie => movie.Plot)
   35
                   .Include(movie => movie.Title)
   36
                   .Exclude(movie => movie.Id)
   37
                   .MetaSearchHighlights("highlights"))
   38
               .Limit(5)
   39
               .ToList();
   40
   41
           // print results
   42
           foreach (var movie in results) {
   43
               Console.WriteLine(movie.ToJson());
   44
           }
   45
       }
   46
   }
   47
   48
   [BsonIgnoreExtraElements]
   49
   public class MovieDocument {
   50
       [BsonIgnoreIfDefault]
   51
       public ObjectId Id { get; set; }
   52
       public string Plot { get; set; }
   53
       public string Title { get; set; }
   54
       [BsonElement("highlights")]
   55
       public List<SearchHighlight> Highlights { get; set; }
   56
   }

   The query specifies the query string new purpose with a positional distance of up to 5 between new and purpose.

   1
   using MongoDB.Bson;
   2
   using MongoDB.Bson.Serialization.Attributes;
   3
   using MongoDB.Bson.Serialization.Conventions;
   4
   using MongoDB.Driver;
   5
   using MongoDB.Driver.Search;
   6
   7
   public class PartialPhrase 
   8
   {
   9
       private const string MongoConnectionString = "<connection-string>";
   10
   11
       public static void Main(string[] args) {
   12
           // allow automapping of the camelCase database fields to our MovieDocument
   13
           var camelCaseConvention = new ConventionPack { new CamelCaseElementNameConvention() };
   14
           ConventionRegistry.Register("CamelCase", camelCaseConvention, type => true);
   15
   16
           // connect to your Atlas cluster
   17
           var mongoClient = new MongoClient(MongoConnectionString);
   18
           var mflixDatabase = mongoClient.GetDatabase("sample_mflix");
   19
           var moviesCollection = mflixDatabase.GetCollection<MovieDocument>("movies");
   20
   21
           // define and run pipeline
   22
           var results = moviesCollection.Aggregate()
   23
               .Search(Builders<MovieDocument>.Search.Phrase(movie => movie.Plot, "new purpose", 5), new SearchHighlightOptions<MovieDocument>(movie => movie.Plot),
   24
                   indexName: "partial-match-tutorial")
   25
               .Project<MovieDocument>(Builders<MovieDocument>.Projection
   26
                   .Include(movie => movie.Plot)
   27
                   .Include(movie => movie.Title)
   28
                   .Exclude(movie => movie.Id)
   29
                   .MetaSearchHighlights("highlights"))
   30
               .Limit(5)
   31
               .ToList();
   32
   33
           // print results
   34
           foreach (var movie in results) {
   35
               Console.WriteLine(movie.ToJson());
   36
           }
   37
       }
   38
   }
   39
   40
   [BsonIgnoreExtraElements]
   41
   public class MovieDocument {
   42
       [BsonIgnoreIfDefault]
   43
       public ObjectId Id { get; set; }
   44
       public string Plot { get; set; }
   45
       public string Title { get; set; }
   46
       [BsonElement("highlights")]
   47
       public List<SearchHighlight> Highlights { get; set; }
   48
   }

   The query uses (.*) regular expression to match any number of characters with the partial query string.

   1
   using MongoDB.Bson;
   2
   using MongoDB.Bson.Serialization.Attributes;
   3
   using MongoDB.Bson.Serialization.Conventions;
   4
   using MongoDB.Driver;
   5
   using MongoDB.Driver.Search;
   6
   7
   public class PartialRegex 
   8
   {
   9
       private const string MongoConnectionString = "<connection-string>";
   10
   11
       public static void Main(string[] args) {
   12
           // allow automapping of the camelCase database fields to our MovieDocument
   13
           var camelCaseConvention = new ConventionPack { new CamelCaseElementNameConvention() };
   14
           ConventionRegistry.Register("CamelCase", camelCaseConvention, type => true);
   15
   16
           // connect to your Atlas cluster
   17
           var mongoClient = new MongoClient(MongoConnectionString);
   18
           var mflixDatabase = mongoClient.GetDatabase("sample_mflix");
   19
           var moviesCollection = mflixDatabase.GetCollection<MovieDocument>("movies");
   20
   21
           // define and run pipeline
   22
           var results = moviesCollection.Aggregate()
   23
               .Search(Builders<MovieDocument>.Search.Regex(movie => movie.Plot, "(.*)new(.*) pur(.*)"),
   24
                   indexName: "partial-match-tutorial")
   25
               .Project<MovieDocument>(Builders<MovieDocument>.Projection
   26
                   .Include(movie => movie.Plot)
   27
                   .Include(movie => movie.Title)
   28
                   .Exclude(movie => movie.Id))
   29
               .Limit(5)
   30
               .ToList();
   31
   32
           // print results
   33
           foreach (var movie in results) {
   34
               Console.WriteLine(movie.ToJson());
   35
           }
   36
       }
   37
   }
   38
   39
   [BsonIgnoreExtraElements]
   40
   public class MovieDocument {
   41
       [BsonIgnoreIfDefault]
   42
       public ObjectId Id { get; set; }
   43
       public string Plot { get; set; }
   44
       public string Title { get; set; }
   45
   }

   The query uses * in the query string to match 0 or more characters before and after the specified words in the partial query string.

   1
   using MongoDB.Bson;
   2
   using MongoDB.Bson.Serialization.Attributes;
   3
   using MongoDB.Bson.Serialization.Conventions;
   4
   using MongoDB.Driver;
   5
   using MongoDB.Driver.Search;
   6
   7
   public class PartialWildcard 
   8
   {
   9
       private const string MongoConnectionString = "<connection-string>";
   10
   11
       public static void Main(string[] args) {
   12
           // allow automapping of the camelCase database fields to our MovieDocument
   13
           var camelCaseConvention = new ConventionPack { new CamelCaseElementNameConvention() };
   14
           ConventionRegistry.Register("CamelCase", camelCaseConvention, type => true);
   15
   16
           // connect to your Atlas cluster
   17
           var mongoClient = new MongoClient(MongoConnectionString);
   18
           var mflixDatabase = mongoClient.GetDatabase("sample_mflix");
   19
           var moviesCollection = mflixDatabase.GetCollection<MovieDocument>("movies");
   20
   21
           // define and run pipeline
   22
           var results = moviesCollection.Aggregate()
   23
               .Search(Builders<MovieDocument>.Search.Wildcard(movie => movie.Plot, "*new* pur*"),
   24
                   indexName: "partial-match-tutorial")
   25
               .Project<MovieDocument>(Builders<MovieDocument>.Projection
   26
                   .Include(movie => movie.Plot)
   27
                   .Include(movie => movie.Title)
   28
                   .Exclude(movie => movie.Id))
   29
               .Limit(5)
   30
               .ToList();
   31
   32
           // print results
   33
           foreach (var movie in results) {
   34
               Console.WriteLine(movie.ToJson());
   35
           }
   36
       }
   37
   }
   38
   39
   [BsonIgnoreExtraElements]
   40
   public class MovieDocument {
   41
       [BsonIgnoreIfDefault]
   42
       public ObjectId Id { get; set; }
   43
       public string Plot { get; set; }
   44
       public string Title { get; set; }
   45
   }

2. Before you run the sample, replace <connection-string> with your Atlas connection string. Ensure that your connection string includes your database user's credentials. To learn more, see Connect via Drivers.

Compile and run the Program.cs file.

dotnet run partial-match-example.csproj

{
  "plot" : "A divorced woman and her diabetic daughter take refuge in
  their newly-purchased house's safe room, when three men break-in,
  searching for a missing fortune.",
  "title" : "Panic Room",
  "highlights" : [{
      "path" : "plot",
      "score" : 4.3644928932189941,
      "texts" : [
          { "type" : "Text", "value" : "A divorced woman and her diabetic daughter take refuge in their " },
          { "type" : "Hit", "value" : "newly-purchased house's safe" },
          { "type" : "Text", "value" : " room, when three men break-in, searching for a missing fortune." }]
  }]
}
{
  "plot" : "A lonely writer develops an unlikely relationship with his
  newly purchased operating system that's designed to meet his every
  need.",
  "title" : "Her",
  "highlights" : [{
      "path" : "plot",
      "score" : 4.1980500221252441,
      "texts" : [
          { "type" : "Text", "value" : "A lonely writer develops an unlikely relationship with his " },
          { "type" : "Hit", "value" : "newly purchased operating system" },
          { "type" : "Text", "value" : " that's designed to meet his every " },
          { "type" : "Hit", "value" : "need" },
          { "type" : "Text", "value" : "." }]
  }]
}
{
  "plot" : "Set in the near future when artificial organs can be
  bought on credit, it revolves around a man who struggles to make the
  payments on a heart he has purchased. He must therefore go on the
  run before said ticker is repossessed.",
  "title" : "Repo Men",
  "highlights" : [{
      "path" : "plot",
      "score" : 2.6448397636413574,
      "texts" : [
          { "type" : "Text", "value" : "Set in the " },
          { "type" : "Hit", "value" : "near future when" },
          { "type" : "Text", "value" : " artificial organs can be bought on credit, it revolves around a man who struggles to make the payments on a heart he has " },
          { "type" : "Hit", "value" : "purchased. He must" }]
  }]
}
{
  "plot" : "A psychologically troubled novelty supplier is nudged
  towards a romance with an English woman, all the while being
  extorted by a phone-sex line run by a crooked mattress salesman, and
  purchasing stunning amounts of pudding.",
  "title" : "Punch-Drunk Love",
  "highlights" : [{
      "path" : "plot",
      "score" : 1.2451990842819214,
      "texts" : [
          { "type" : "Text", "value" : "A psychologically troubled " },
          { "type" : "Hit", "value" : "novelty supplier is" },
          { "type" : "Text", "value" : " " },
          { "type" : "Hit", "value" : "nudged towards a" },
          { "type" : "Text", "value" : " romance with an English woman, all the while being extorted by a phone-sex line run by a crooked mattress salesman, and " },
          { "type" : "Hit", "value" : "purchasing stunning amounts" },
          { "type" : "Text", "value" : " of pudding." }]
  }]
}
{
  "plot" : "Jack Conrad is awaiting the death penalty in a corrupt
  Central American prison. He is \"purchased\" by a wealthy television
  producer and taken to a desolate island where he must fight to the
  death against nine other condemned killers from all corners of the
  world, with freedom going to the sole survivor.",
  "title" : "The Condemned",
  "highlights" : [{
      "path" : "plot",
      "score" : 2.9437892436981201,
      "texts" : [
          { "type" : "Text", "value" : "He is \"" },
          { "type" : "Hit", "value" : "purchased\" by a" },
          { "type" : "Text", "value" : " wealthy television producer and taken to a desolate island where he must fight to the death against " },
          { "type" : "Hit", "value" : "nine other condemned" },
          { "type" : "Text", "value" : " killers from all corners of the world, with freedom going to the sole survivor." }]
  }]
}

dotnet run partial-match-example.csproj

{
  "plot" : "The true story of Richard Pimentel, a brilliant public
  speaker with a troubled past, who returns from Vietnam severely
  hearing -impaired and finds a new purpose in his landmark efforts on
  the behalf of Americans with disabilities.",
  "title" : "Music Within",
  "highlights" : [{
      "path" : "plot",
      "score" : 1.9394469261169434,
      "texts" : [
          { "type" : "Text", "value" : "The true story of Richard Pimentel, a brilliant public speaker with a troubled past, who returns from Vietnam severely hearing -impaired and finds a " },
          { "type" : "Hit", "value" : "new" },
          { "type" : "Text", "value" : " " },
          { "type" : "Hit", "value" : "purpose" },
          { "type" : "Text", "value" : " in his landmark efforts on the behalf of Americans with disabilities." }]
  }]
}
{
  "plot" : "The supervillain Megamind finally defeats his nemesis, the
  superhero Metro Man. But without a hero, he loses all purpose and
  must find new meaning to his life.",
  "title" : "Megamind",
  "highlights" : [{
      "path" : "plot",
      "score" : 2.90376877784729,
      "texts" : [
          { "type" : "Text", "value" : "But without a hero, he loses all " },
          { "type" : "Hit", "value" : "purpose" },
          { "type" : "Text", "value" : " and must find " },
          { "type" : "Hit", "value" : "new" },
          { "type" : "Text", "value" : " meaning to his life." }]
  }]
}
{
  "plot" : "An aging Pat Garrett is hired as a lawman on behalf of a
  group of wealthy New Mexico cattle barons--his sole purpose being to
  bring down his old friend Billy the Kid.",
  "title" : "Pat Garrett & Billy the Kid",
  "highlights" : [{
      "path" : "plot",
      "score" : 2.115748405456543,
      "texts" : [
          { "type" : "Text", "value" : "An aging Pat Garrett is hired as a lawman on behalf of a group of wealthy " },
          { "type" : "Hit", "value" : "New" },
          { "type" : "Text", "value" : " Mexico cattle barons--his sole " },
          { "type" : "Hit", "value" : "purpose" },
          { "type" : "Text", "value" : " being to bring down his old friend Billy the Kid." }]
  }]
}

dotnet run partial-match-example.csproj

{
  "plot" : "After the rebels have been brutally overpowered by the
  Empire on their newly established base, Luke Skywalker takes
  advanced Jedi training with Master Yoda, while his friends are
  pursued by Darth Vader as part of his plan to capture Luke.",
  "title" : "Star Wars: Episode V - The Empire Strikes Back"
}
{
  "plot" : "The new owner of the Cleveland Indians puts together a
  purposely horrible team so they'll lose and she can move the team.
  But when the plot is uncovered, they start winning just to spite
  her.",
  "title" : "Major League"
}
{
  "plot" : "The true story of Richard Pimentel, a brilliant public
  speaker with a troubled past, who returns from Vietnam severely
  hearing -impaired and finds a new purpose in his landmark efforts on
  the behalf of Americans with disabilities.",
  "title" : "Music Within"
}
{
  "plot" : "A lonely writer develops an unlikely relationship with his
  newly purchased operating system that's designed to meet his every
  need.",
  "title" : "Her"
}
{
  "plot" : "An adrenaline junkie walks away from a whirlwind romance
  and embraces a new life as a thief, though he soon finds himself
  pursued by veteran police officer and engaged in a turf war with a
  local gangster.",
  "title" : "Kick"
}

dotnet run partial-match-example.csproj

{
  "plot" : "After the rebels have been brutally overpowered by the
  Empire on their newly established base, Luke Skywalker takes
  advanced Jedi training with Master Yoda, while his friends are
  pursued by Darth Vader as part of his plan to capture Luke.",
  "title" : "Star Wars: Episode V - The Empire Strikes Back"
}
{
  "plot" : "The new owner of the Cleveland Indians puts together a
  purposely horrible team so they'll lose and she can move the team.
  But when the plot is uncovered, they start winning just to spite
  her.",
  "title" : "Major League"
}
{
  "plot" : "The true story of Richard Pimentel, a brilliant public
  speaker with a troubled past, who returns from Vietnam severely
  hearing -impaired and finds a new purpose in his landmark efforts on
  the behalf of Americans with disabilities.",
  "title" : "Music Within"
}
{
  "plot" : "A lonely writer develops an unlikely relationship with his
  newly purchased operating system that's designed to meet his every
  need.",
  "title" : "Her"
}
{
  "plot" : "An adrenaline junkie walks away from a whirlwind romance
  and embraces a new life as a thief, though he soon finds himself
  pursued by veteran police officer and engaged in a turf war with a
  local gangster.",
  "title" : "Kick"
}

Create a file named partial-match-query.go

Copy and paste the code example for the operator for which you created the index into the partial-match-query.go file.

The following query uses the operator to query the plot field of the sample_mflix.movies collection. The query includes a:

• $limit stage to limit the output to 5 results

• $project stage to exclude all fields except title and plot

1
package main
2
3
import (
4
	"context"
5
	"fmt"
6
	"time"
7
8
	"go.mongodb.org/mongo-driver/bson"
9
	"go.mongodb.org/mongo-driver/mongo"
10
	"go.mongodb.org/mongo-driver/mongo/options"
11
)
12
13
// define structure of movies collection
14
type MovieCollection struct {
15
	title string `bson:"Title,omitempty"`
16
	plot  string `bson:"Plot,omitempty"`
17
}
18
19
func main() {
20
	var err error
21
	// connect to the Atlas cluster
22
	ctx := context.Background()
23
	client, err := mongo.Connect(ctx, options.Client().ApplyURI("<connection-string>"))
24
	if err != nil {
25
		panic(err)
26
	}
27
	defer client.Disconnect(ctx)
28
	// set namespace
29
	collection := client.Database("sample_mflix").Collection("movies")
30
	// define pipeline
31
	searchStage := bson.D{{"$search", bson.M{
32
		"index": "partial-match-tutorial",
33
		"autocomplete": bson.M{
34
			"path": "plot", "query": "new purchase", "tokenOrder": "any", "fuzzy": bson.M{
35
				"maxEdits": 2, "prefixLength": 1, "maxExpansions": 256},
36
		},
37
		"highlight": bson.D{
38
			{"path", "plot"},
39
		},
40
	}}}
41
	limitStage := bson.D{{"$limit", 5}}
42
	projectStage := bson.D{{"$project", bson.D{{"title", 1}, {"plot", 1}, {"_id", 0}, {"highlights", bson.D{{"$meta", "searchHighlights"}}}}}}
43
	// specify the amount of time the operation can run on the server
44
	opts := options.Aggregate().SetMaxTime(5 * time.Second)
45
	// run pipeline
46
	cursor, err := collection.Aggregate(ctx, mongo.Pipeline{searchStage, limitStage, projectStage}, opts)
47
	if err != nil {
48
		panic(err)
49
	}
50
	// print results
51
	var results []bson.D
52
	if err = cursor.All(context.TODO(), &results); err != nil {
53
		panic(err)
54
	}
55
	for _, result := range results {
56
		fmt.Println(result)
57
	}
58
}

1
package main
2
3
import (
4
	"context"
5
	"fmt"
6
	"time"
7
8
	"go.mongodb.org/mongo-driver/bson"
9
	"go.mongodb.org/mongo-driver/mongo"
10
	"go.mongodb.org/mongo-driver/mongo/options"
11
)
12
13
// define structure of movies collection
14
type MovieCollection struct {
15
	title string `bson:"Title,omitempty"`
16
	plot  string `bson:"Plot,omitempty"`
17
}
18
19
func main() {
20
	var err error
21
	// connect to the Atlas cluster
22
	ctx := context.Background()
23
	client, err := mongo.Connect(ctx, options.Client().ApplyURI("<connection-string>"))
24
	if err != nil {
25
		panic(err)
26
	}
27
	defer client.Disconnect(ctx)
28
	// set namespace
29
	collection := client.Database("sample_mflix").Collection("movies")
30
	// define pipeline
31
	searchStage := bson.D{{"$search", bson.M{
32
		"index":     "partial-match-tutorial",
33
		"phrase":    bson.D{{"path", "plot"}, {"query", "new purpose"}, {"slop", 5}},
34
		"highlight": bson.D{{"path", "plot"}},
35
	}}}
36
	limitStage := bson.D{{"$limit", 5}}
37
	projectStage := bson.D{{"$project", bson.D{{"title", 1}, {"plot", 1}, {"_id", 0}, {"highlights", bson.D{{"$meta", "searchHighlights"}}}}}}
38
	// specify the amount of time the operation can run on the server
39
	opts := options.Aggregate().SetMaxTime(5 * time.Second)
40
	// run pipeline
41
	cursor, err := collection.Aggregate(ctx, mongo.Pipeline{searchStage, limitStage, projectStage}, opts)
42
	if err != nil {
43
		panic(err)
44
	}
45
	// print results
46
	var results []bson.D
47
	if err = cursor.All(context.TODO(), &results); err != nil {
48
		panic(err)
49
	}
50
	for _, result := range results {
51
		fmt.Println(result)
52
	}
53
}

1
package main
2
3
import (
4
	"context"
5
	"fmt"
6
	"time"
7
8
	"go.mongodb.org/mongo-driver/bson"
9
	"go.mongodb.org/mongo-driver/mongo"
10
	"go.mongodb.org/mongo-driver/mongo/options"
11
)
12
13
// define structure of movies collection
14
type MovieCollection struct {
15
	title string `bson:"Title,omitempty"`
16
	plot  string `bson:"Plot,omitempty"`
17
}
18
19
func main() {
20
	var err error
21
	// connect to the Atlas cluster
22
	ctx := context.Background()
23
	client, err := mongo.Connect(ctx, options.Client().ApplyURI("<connection-string>"))
24
	if err != nil {
25
		panic(err)
26
	}
27
	defer client.Disconnect(ctx)
28
	// set namespace
29
	collection := client.Database("sample_mflix").Collection("movies")
30
	// define pipeline
31
	searchStage := bson.D{{"$search", bson.M{
32
		"index": "partial-match-tutorial",
33
		"regex": bson.D{{"path", "plot"}, {"query", "(.*)new(.*) pur(.*)"}},
34
	}}}
35
	limitStage := bson.D{{"$limit", 5}}
36
	projectStage := bson.D{{"$project", bson.D{{"title", 1}, {"plot", 1}, {"_id", 0}}}}
37
	// specify the amount of time the operation can run on the server
38
	opts := options.Aggregate().SetMaxTime(5 * time.Second)
39
	// run pipeline
40
	cursor, err := collection.Aggregate(ctx, mongo.Pipeline{searchStage, limitStage, projectStage}, opts)
41
	if err != nil {
42
		panic(err)
43
	}
44
	// print results
45
	var results []bson.D
46
	if err = cursor.All(context.TODO(), &results); err != nil {
47
		panic(err)
48
	}
49
	for _, result := range results {
50
		fmt.Println(result)
51
	}
52
}

1
package main
2
3
import (
4
	"context"
5
	"fmt"
6
	"time"
7
8
	"go.mongodb.org/mongo-driver/bson"
9
	"go.mongodb.org/mongo-driver/mongo"
10
	"go.mongodb.org/mongo-driver/mongo/options"
11
)
12
13
// define structure of movies collection
14
type MovieCollection struct {
15
	title string `bson:"Title,omitempty"`
16
	plot  string `bson:"Plot,omitempty"`
17
}
18
19
func main() {
20
	var err error
21
	// connect to the Atlas cluster
22
	ctx := context.Background()
23
	client, err := mongo.Connect(ctx, options.Client().ApplyURI("<connection-string>"))
24
	if err != nil {
25
		panic(err)
26
	}
27
	defer client.Disconnect(ctx)
28
	// set namespace
29
	collection := client.Database("sample_mflix").Collection("movies")
30
	// define pipeline
31
	searchStage := bson.D{{"$search", bson.M{
32
		"index":    "partial-match-tutorial",
33
		"wildcard": bson.D{{"path", "plot"}, {"query", "*new* pur*"}},
34
	}}}
35
	limitStage := bson.D{{"$limit", 5}}
36
	projectStage := bson.D{{"$project", bson.D{{"title", 1}, {"plot", 1}, {"_id", 0}}}}
37
	// specify the amount of time the operation can run on the server
38
	opts := options.Aggregate().SetMaxTime(5 * time.Second)
39
	// run pipeline
40
	cursor, err := collection.Aggregate(ctx, mongo.Pipeline{searchStage, limitStage, projectStage}, opts)
41
	if err != nil {
42
		panic(err)
43
	}
44
	// print results
45
	var results []bson.D
46
	if err = cursor.All(context.TODO(), &results); err != nil {
47
		panic(err)
48
	}
49
	for _, result := range results {
50
		fmt.Println(result)
51
	}
52
}