OpenSwathLibraryIDNormalizer Class Reference

Establish and validate canonical precursor/transition identifiers for OpenSWATH libraries. More...

#include <OpenMS/ANALYSIS/OPENSWATH/OpenSwathLibraryIDNormalizer.h>

Classes
struct	SourceIDMapping
	Source-to-canonical precursor provenance captured during library loading. More...

Static Public Member Functions
static SourceIDMapping	normalizeSourceIDs (OpenSwath::LightTargetedExperiment &exp)
	Replace arbitrary source precursor/transition identifiers with deterministic canonical IDs.
static void	materializeDecoyPrefix (OpenSwath::LightTargetedExperiment &exp, const SourceIDMapping &source_ids, const std::string &decoy_prefix)
	Materialize decoy flags from a configurable source precursor prefix.
static std::optional< std::string >	canonicalTargetForDecoyPrecursor (const std::string &decoy_ref, const SourceIDMapping &source_ids, const std::string &decoy_prefix)
	Resolve the canonical target precursor paired with a source-prefix decoy.
static bool	hasCanonicalIDs (const OpenSwath::LightTargetedExperiment &exp)
	Report whether a LightTargetedExperiment satisfies the canonical-ID invariant.
static bool	hasCanonicalIDFormat (const OpenSwath::LightTargetedExperiment &exp) noexcept
	Report whether all operational ID fields use canonical decimal syntax.
static void	validateCanonicalIDs (const OpenSwath::LightTargetedExperiment &exp)
	Validate that a LightTargetedExperiment already uses canonical numeric IDs.

Detailed Description

Establish and validate canonical precursor/transition identifiers for OpenSWATH libraries.

OpenSWATH algorithms use string identifiers in OpenSwath::LightTargetedExperiment, while persistent PQP/OSWPQ schemas use integer foreign keys. This helper defines the application-level invariant that the LightTargetedExperiment carries those canonical integer identifiers encoded as decimal strings:

• LightCompound.id is the canonical precursor ID.
• LightTransition.peptide_ref references that canonical precursor ID.
• LightTransition.transition_name is the canonical transition ID.

Arbitrary source identifiers (for example from TSV or TraML) are normalized once at the OpenSWATH library-loading boundary. Database-backed inputs (PQP/OSWPQ) already carry persistent numeric IDs and are validated instead of renumbered.

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Class Documentation

OpenMS::OpenSwathLibraryIDNormalizer::SourceIDMapping

struct OpenMS::OpenSwathLibraryIDNormalizer::SourceIDMapping

Source-to-canonical precursor provenance captured during library loading.

The operational LightTargetedExperiment contains only canonical numeric IDs. This mapping retains the original precursor identifiers long enough for callers that still need source-ID semantics (for example configurable target/decoy pairing) without reusing source identifiers as operational foreign keys.

Class Members
unordered_map< string, string >	precursor_canonical_to_source	Canonical operational precursor ID -> original/source precursor ID.
unordered_map< string, string >	precursor_source_to_canonical	Original/source precursor ID -> canonical operational precursor ID.
unordered_map< string, string >	transition_canonical_to_source	Canonical operational transition ID -> original/source transition ID. Source transition IDs are not required to be unique, so only the canonical-to-source direction is retained.

Member Function Documentation

canonicalTargetForDecoyPrecursor()

static std::optional< std::string > canonicalTargetForDecoyPrecursor ( const std::string &  decoy_ref, const SourceIDMapping &  source_ids, const std::string &  decoy_prefix  )

static

Resolve the canonical target precursor paired with a source-prefix decoy.

decoy_ref is normally a canonical precursor ID. The source precursor ID is recovered from source_ids, decoy_prefix is removed there, and the matching target source ID is mapped back to its canonical operational ID. If no provenance mapping is available, source-ID input is supported as a compatibility path.

Returns

The matching target precursor ID in the same operational domain as the loaded experiment, or std::nullopt if the decoy cannot be paired.

hasCanonicalIDFormat()

static bool hasCanonicalIDFormat ( const OpenSwath::LightTargetedExperiment &  exp )

staticnoexcept

Report whether all operational ID fields use canonical decimal syntax.

This checks only the textual ID representation. It deliberately does not check uniqueness or whether transition precursor references resolve. Writer compatibility overloads use it to distinguish source-style identifiers from malformed canonical-looking input.

Parameters

[in]

exp

Experiment to inspect.

Returns

True if every compound ID, transition ID and transition precursor reference is a non-negative Int64 in canonical decimal form.

hasCanonicalIDs()

static bool hasCanonicalIDs ( const OpenSwath::LightTargetedExperiment &  exp )

static

Report whether a LightTargetedExperiment satisfies the canonical-ID invariant.

Parameters

[in]

exp

Experiment to inspect.

Returns

True if validateCanonicalIDs() would accept exp.

materializeDecoyPrefix()

static void materializeDecoyPrefix ( OpenSwath::LightTargetedExperiment &  exp, const SourceIDMapping &  source_ids, const std::string &  decoy_prefix  )

static

Materialize decoy flags from a configurable source precursor prefix.

Canonicalization replaces source precursor references and transition names with numeric IDs. This helper uses the provenance returned by normalizeSourceIDs() (or reconstructed by a persistent-format reader) to preserve prefix-based decoy semantics before filtering. A configured prefix on either the source precursor ID or source transition ID materializes the explicit transition decoy flag. Existing explicit decoy flags are retained.

Parameters

[in,out]	exp	Canonical experiment whose transition decoy flags may be updated.
[in]	source_ids	Source precursor/transition provenance for the canonical experiment.
[in]	decoy_prefix	Configured source precursor decoy prefix. Empty disables additional prefix materialization.

normalizeSourceIDs()

static SourceIDMapping normalizeSourceIDs ( OpenSwath::LightTargetedExperiment &  exp )

static

Replace arbitrary source precursor/transition identifiers with deterministic canonical IDs.

Precursor IDs are assigned by lexicographically sorting all unique source compound IDs and numbering them from zero, matching the persistent PQP convention. Compounds that are not referenced by any transition are then omitted from the operational LightTargetedExperiment without compressing the remaining IDs, so sparse precursor IDs are expected. This keeps direct source loading consistent with source-to-PQP round-trips. Transition IDs are assigned from their order in exp.transitions, also starting at zero. Existing transition peptide_ref values are rewritten to the new precursor IDs.

Normalization rebuilds the LightTargetedExperiment rather than changing compound IDs in place, ensuring that its internal compound-reference lookup cache cannot retain source-ID keys after canonicalization.

This function is intended for source-oriented formats such as TSV and TraML. It must not be used to renumber libraries that already contain persistent canonical IDs.

Parameters

[in,out]

exp

Source-oriented experiment to canonicalize in place.

Returns

Source-ID provenance for the canonicalized experiment. The precursor maps cover every source compound, including compounds omitted from the operational exp.

Exceptions

Exception::InvalidValue

If a compound ID is empty/duplicated or a transition references an unknown/empty compound ID.

validateCanonicalIDs()

static void validateCanonicalIDs ( const OpenSwath::LightTargetedExperiment &  exp )

static

Validate that a LightTargetedExperiment already uses canonical numeric IDs.

IDs must be unique, non-negative Int64 values written in canonical decimal form (e.g. "7", not "007", "+7", or "-0"). IDs may be sparse; filtering must not force renumbering. Every transition peptide_ref must exactly match an existing compound ID.

Parameters

[in]

exp

Experiment to validate.

Exceptions

Exception::InvalidValue

If any canonical-ID invariant is violated.