Server-side JavaScript

Mark-up

cts.highlight is a powerful function that allows you to traverse a document and mark-up matches based on a query. The query can be anything from a simple word query to a sophisticated Boolean query with geospatial, range, and word terms. Highlighting over XML, you can build snippets and highlights, for example, to report as search results.

function highlight(node, query) {
  var match = 0;
  var threshold = 2;
  // NodeBuilder is used to "inject" highlights into the flow of the matched nodes.
  var builder = new NodeBuilder();
  function callback(builder, text, node, queries, start) {
    // Keep track of the number of matches
    match++; 
    // Inject a new element in context to highlight the match
    builder.startElement("b") 
      .addText(text)
      .endElement();
    // Stop matching after the threshold is reached
    if (match >= threshold) { return "break"; } 
    return "continue";
  }
  cts.highlight(node, query, callback, builder);
  return builder.toNode(); 
}
var node = xdmp.unquote("<root><p>This are 1, including stemming and capitalization.</p><p>this is 2</p><p>this is 3</p><p>this is 4</p><p>this is 5.</p></root>");
var query = "this is"; // Implicitly converted to a word query
highlight(node, query);

Highlighting also supports JSON nodes. While JSON doesn't lend itself to inline markup, as XML does, cts.highlight() does the hard work of splitting nodes and interleaving highlights.

// This could be any query. Here we've simplified to a single word query.
var query = "flannel";

var results = []; // Accumulator for result snippets
for(var doc of cts.search(query)) {
  var builder = new NodeBuilder();
  // The callback is the function that's executed when highlight finds a match 
  // to the query
  function callback(builder, text, node, queries, start) {
    builder.addNode({"match": text});
  };
  cts.highlight(
    // Project some of the fields of the matched documents into new JavaScript 
    // object and continue highlighting.
    { 
      "guid": doc.root.guid, 
      "about": doc.root.about,
    }, query, callback, builder
  );
  results.push(builder.toNode());
}
results;

The resulting matches are interspersed within what used to be a single string property.

[
  {
    "guid": "986af6e1-e0f1-450f-b1f0-2eff54357840",
    "about": [
      "Skateboard pop-up kogi, ethnic Vice disrupt Truffaut twee fashion axe forage occupy biodiesel. Bespoke umami yr, ",
      {
        "match": "flannel"
      },
      " kogi XOXO bitters butcher ugh DIY lomo. Flexitarian distillery ",
      {
        "match": "flannel"
      },
      ", mustache butcher raw denim crucifix sartorial PBR&B. Ennui beard freegan, Blue Bottle cornhole gluten-free yr sriracha 90's tofu stumptown crucifix Williamsburg keytar fingerstache. Odd Future selfies Shoreditch Echo Park deep v, lo-fi put a bird on it cray master cleanse Intelligentsia drinking vinegar. Ethical ",
      {
        "match": "flannel"
      },
      " craft beer meggings forage, paleo High Life viral Blue Bottle food truck fashion axe twee fingerstache Bushwick. Scenester Thundercats lo-fi Odd Future, wolf kale chips fashion axe mixtape slow-carb quinoa."
    ]
  },
  {
    "guid": "dd95907c-3b29-4e2c-9a4c-baf61bd96c9d",
    "about": [
      "Tote bag pug whatever trust fund, yr fashion axe American Apparel selfies ",
      {
        "match": "flannel"
      },
      " Portland gentrify synth twee. Tousled tofu biodiesel tattooed polaroid. Chia direct trade drinking vinegar, Helvetica ethical bitters banjo polaroid quinoa. Wes Anderson ugh 3 wolf moon +1 single-origin coffee, authentic plaid Tonx you probably haven't heard of them quinoa dreamcatcher fingerstache literally meggings. Vice aesthetic authentic, fashion axe stumptown Carles selfies organic you probably haven't heard of them street art Thundercats. Before they sold out Vice yr post-ironic Marfa cliche. Blue Bottle Portland bespoke slow-carb cliche."
    ]
  },
  {
    "guid": "34a23649-ec61-478f-90ab-5f01a55120ce",
    "about": [
      "Letterpress Echo Park fashion axe occupy whatever before they sold out, Pinterest pickled cliche. Ethnic stumptown food truck wolf, ethical Helvetica Marfa hashtag. Echo Park photo booth banh mi ennui, organic VHS 8-bit fixie. Skateboard irony dreamcatcher mlkshk iPhone cliche. ",
      {
        "match": "Flannel"
      },
      " ennui YOLO artisan tofu. Hashtag irony Shoreditch letterpress, selvage scenester YOLO. Locavore fap bicycle rights, drinking vinegar Tonx bespoke paleo 3 wolf moon readymade direct trade ugh wolf asymmetrical beard plaid."
    ]
  }
]

MarkLogic

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Contents

Server-side JavaScript

Mark-up