FieldType

FieldFormat holds all the formatting info needed to format data values in a specific column. e.g. Field 1 may be text, field 2 may be a float, etc. This is calculated during the caching phase. Each FieldFormat instance is part of a vector representing the full row, so each includes the start position on the line and similar data.

APIs used during the caching phase to gather field value samples - this - Initial construction. Takes the field index. - setHeader - Used to set the header text. - updateForFieldValue - Used to add the next field value sample. - finalizeFormatting - Used at the end of caching to finalize the format choices.

APIs used after caching is finished (after finalizeFormatting): - startPosition - Returns the expected start position for the field. - endPosition - Returns the expected end position for the field. - writeHeader - Outputs the header, properly aligned. - writeFieldValue - Outputs the current field value, properly aligned.

Values

ValueMeaning
unknown
text
integer
floatingPoint
exponent

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