Authority Heading Language Count Tool

Description

Select exact heading matches, count those records, and count distinct language strings among them.

Catalog metadata can record language, date precision, and source identity independently of the underlying item's completeness or authenticity. Consistency flags should be interpreted alongside the original record.

Select exact heading matches, count those records, and count distinct language strings among them.

When to use this tool

Use Authority Heading Language Count when you need a narrow catalog metadata consistency check.

How to use the tool and how it works

Enter headingIds, languages, selectedHeading. Keep parallel arrays aligned. Use the units and conventions below.
Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
Read distinctLanguages, records. Use the output convention below.

Require aligned headingIds and languages. Select exact heading matches, count those records, and count distinct language strings among them.^[1]

Input field	Meaning and units	Accepted input
headingIds	Heading Ids	Required. Array of text; maximum UTF-16 length 8192; maximum items 256.
languages	Languages	Required. Array of text; maximum UTF-16 length 8192; maximum items 256.
selectedHeading	Selected Heading	Required. Text; maximum UTF-16 length 8192.

Output field	Interpretation	Returned shape
distinctLanguages	Distinct Languages	Required. Safe integer.
records	Records	Required. Safe integer.

json

{
  "input": {
    "headingIds": [
      "h1",
      "h1",
      "h2"
    ],
    "languages": [
      "en",
      "fr",
      "en"
    ],
    "selectedHeading": "h1"
  },
  "output": {
    "distinctLanguages": 2,
    "records": 2
  }
}

Limitations and assumptions

Language tags are not standardized or normalized; repeated records still increase records but not distinctLanguages.
Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.

Alternative or Complementary methods

Apply the relevant cataloging standard and inspect the original record for a complete assessment.

References

Calculation and input contract: library-science/authority-heading-language-count — tool.io

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