Proxy Component 25.4
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# NumericDateType Fields

You can configure the Content component to identify fields that contain dates. When these fields are indexed, Content stores them in a fast look-up table in memory, so that it can quickly return the fields.

NOTE: You cannot configure a field with more than one numeric-based type concurrently. Numeric-based types include `NumericType`, `NumericDateType`, `MatchType`, `ParametricRangeType`, `ReferenceMemoryMappedType`, and `ParametricType` when the `ParametricNumericMapping` configuration parameter is set to `True`.

Content converts dates to numerical values (epoch seconds) and identifies the fields that contain the numerical date values.

To set up memory mapping for NumericDateType fields

1. Open the Content component configuration file in a text editor.

2. List a process that identifies numeric date fields in the `[FieldProcessing]` section. For example:

       [FieldProcessing]
       0=MyFirstProcess
       1=NumericDateFields

3. Create a section for each process that you listed, and in each section, create a property for the process (you define the property by setting one or more applicable configuration parameters). Identify the fields that you want to associate with the process.

   NOTE: The properties that you create must not have the same name as the processes.

   For example:

       [MyFirstProcess]
       Property=MyProperty
       PropertyFieldCSVs=*/MyField,*/MyOtherField

       [NumericDateFields]
       Property=NumDate
       PropertyFieldCSVs=*/BIRTHDAY,*/STARTDATE

4. Create a section for the property in which you set the `NumericDateType` parameter to `True`. This enables Content to memory map the associated `PropertyFieldCSVs` fields, and identify them as fields that contain date values. For example:

       [NumDate]
       NumericDateType=True

5. Save and close the configuration file.

6. Restart the Content component for your changes to take effect.

If you now send a query for a specific value that is stored in the `BIRTHDAY` field, Content memory maps the range that this value is in, so that it can return results more quickly next time a value that lies in this range is queried.

For example:

    http://12.3.4.56:4000/action=Query&FieldText=RANGE{01/01/1980,31/12/1980}:BIRTHDAY

The `BIRTHDAY` field must contain a numeric date value that is between 01/01/1980 and 31/12/1980 for this document to be returned.

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Version 25.4 | Last updated October 2025

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Product: Knowledge Discovery Proxy Component 25.4

Topic Title: NumericDateType Fields