Interface: Batch

One batch within a stream: a run of messages delimited by a BHS header and/or a BTS trailer (both optional in §2.10.3, so a BTS closes a preceding run into a batch even with no BHS). A run of messages with neither a header nor a trailer is not a batch: those messages live in BatchSplitResult.messages only, so they never inflate a batch count. declaredMessageCount is BTS-1 when the trailer declared a usable non-negative integer (it is optional [0..1] in the spec, so it may be absent); actualMessageCount is always the real count.

Example

import { splitBatch } from "@cosyte/hl7";
const [batch] = splitBatch(raw).batches;
batch?.header?.name; // "BHS" (or undefined for a headerless BTS-closed run)
batch?.actualMessageCount; // messages actually in the batch

Properties

actualMessageCount

readonly actualMessageCount: number

The actual number of messages split out of this batch.

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declaredMessageCount?

readonly optional declaredMessageCount?: number

BTS-1 batch message count, when declared as a non-negative integer.

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header?

readonly optional header?: BatchEnvelopeSegment

The BHS header, when this batch was opened by one.

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messages

readonly messages: readonly BatchMessageEntry[]

The messages in this batch, in stream order.

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trailer?

readonly optional trailer?: BatchEnvelopeSegment

The BTS trailer, when this batch was closed by one.