[#BloombergLP-balxml-Encoder_SequenceFirstPass]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/balxml.adoc[balxml]::Encoder_SequenceFirstPass
:relfileprefix: ../../
:mrdocs:

Component private class. Do not use.

== Synopsis

Declared in `<balxml_encoder.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
class Encoder_SequenceFirstPass;
----

== Description

This class is used as the first pass when encoding elements of a sequence. It basically does two things: o encode elements with the `bdlat_FormattingMode::e_IS_ATTRIBUTE` flag using the `Formatter::addAttribute` method. o looks for an element with the `bdlat_FormattingMode::e_IS_SIMPLE_CONTENT` flag and, if found, provides accessors to obtain the `id` of the element. Note that the behavior is undefined unless there is only one element with `IS_SIMPLE_CONTENT` flag and, if this element exist, all other elements must have `IS_ATTRIBUTE` flag.

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/balxml/Encoder_SequenceFirstPass/2constructor.adoc[`Encoder_SequenceFirstPass`]         [.small]#[constructor]#
| Create a visitor for first pass for sequences.
| xref:BloombergLP/balxml/Encoder_SequenceFirstPass/addAttribute.adoc[`addAttribute`] 
| Add an attribute with the specified `name`, the value of the specified `object`, using the specified `formattingMode`.
| xref:BloombergLP/balxml/Encoder_SequenceFirstPass/addAttributeImp-01.adoc[`addAttributeImp`] 
| `addAttributeImp` overloads
| xref:BloombergLP/balxml/Encoder_SequenceFirstPass/hasSubElements.adoc[`hasSubElements`] 
| Return true if a sub‐element is found, and false otherwise.
| xref:BloombergLP/balxml/Encoder_SequenceFirstPass/operator_call.adoc[`operator()`] 
| Called back when an element is visited.
| xref:BloombergLP/balxml/Encoder_SequenceFirstPass/simpleContentId.adoc[`simpleContentId`] 
| Return a null value if there is no element with `IS_SIMPLE_CONTENT` flag, or a non‐null value with the integer `id` of the element otherwise.
|===



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