getFields

Class: matlab.net.http.HeaderField
Namespace: matlab.net.http

Return header fields matching name or class

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Syntax

[fields,indices] = getFields(headers,ids)

Description

[fields,indices] = getFields(headers,ids) returns fields and their indices in the header fields that match the given IDs.

Input Arguments

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Header fields, specified as a vector of matlab.net.http.HeaderField objects.

Names to match, specified as one of the following.

  • String vector, character vector, cell array of character vectors, or comma-separated list of strings or character vectors containing the names of the fields to return. Names are not case-sensitive.

  • Vector or comma-separated list of one or more matlab.net.http.HeaderField objects whose Name properties are used to determine which fields to return. Names are not case-sensitive. Header field values in these objects are ignored.

  • Vector or comma-separated list of matlab.metadata.Class objects that are subclasses of HeaderField.

    The getFields method searches for names that match names supported by the specified classes, regardless of the class. If a subclass does not have a specific set of supported names, all header fields of that subclass are matched regardless of their names. Call the HeaderField.displaySubclasses method to see supported names.

Output Arguments

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Fields matching input, returned as an array of matlab.net.http.HeaderField objects. If no matches exist, getFields returns an empty HeaderField array. The name search is case-insensitive.

Index values of fields, returned as an array of integers, or [] if no match.

If messages is a vector, then getFields returns fields matching ids from all messages. indices is a cell array of vectors, where indices{i} contains the indices of the matching fields in messages{i}.

Version History

Introduced in R2018a