File Content Extraction 26.2
Filter SDK C++ Programming Guide

# The Metadata Class

Defined in: `Keyview_Metadata.hpp`

The `Metadata` class is the type returned by Document::metadata or Subfile::metadata to represent a list of metadata elements. You should not construct a `Metadata` object by calling the constructor.

For backwards compatibility with KeyView 23.2, a `Metadata` object behaves much like a `const std::multimap<std::string, MetadataElement>`, exposing most of the same functions and returning the same types from them. In particular, this means that iterators returned from `Metadata` functions are iterators to `std::pair<const std::string, MetadataElement>` rather than iterators to `MetadataElement`. For more detailed descriptions of these functions, refer to the C++ standard library documentation for `std::multimap`.

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Product: File Content Extraction 26.2

Topic Title: The Metadata Class