---
title: "onto-wdx-entity-projection — Mova code model"
description: "Mova code model of onto/src/wdx.rs: components with their labels, obernants and the model text."
url: "https://groupants.elamur.ai/free/en/mova/onto/src/wdx.rs.groupant/entity-projection.groupant/"
---
Elamur: [Mova](https://md.mova.elamur.ai/free/en/) · [Dictionary](https://md.dictionary.elamur.ai/free/en/) · [Research](https://md.research.elamur.ai/free/en/) · **Groupants**

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# onto-wdx-entity-projection

The groupant beside onto/src/wdx.rs in the Mova repository: what the code computes, what it never does, how to go back from its outputs, its invariants, cost and checks.

## Facts

- **kind:** groupant_fragment
- **status:** partial source bound model
- **source:** [`onto/src/wdx.rs`](https://github.com/ElamurAI/mova-free/blob/main/onto/src/wdx.rs)
- **source SHA-256:** `3a6abab00d2c2388…`
- **covers:** Trim CR/comma/space; empty/[ /] marker returns; else lines++. Deserialize error→bad++. emit property/item/other; export=(live279∨sl.n>0∨taxon)∧!skip_wm. Item row before labels/aliases/sitelinks/selected claims. Secondary JSON error counts bad without undo. (bytes 31509–38777)
- **part of:** [onto-wdx](https://md.groupants.elamur.ai/free/en/mova/onto/src/wdx.rs.groupant/)
- **repository folder:** [`onto/src/wdx.rs.groupant/entity-projection.groupant`](https://github.com/ElamurAI/mova-free/tree/main/onto/src/wdx.rs.groupant/entity-projection.groupant)
- **repository commit:** `48f2e6f74146`

> **Implementation material.** A Mova code model describes this code at one source revision: partial models, finite checks and their stated scope. It is not a reviewed general exposition, and its labels are shown as written, never raised.

## Components

| component | label | where |
|---|---|---|
| **approximant** | partial | [approximant](#approximant) |
| **ast** | partial | `../syntax.json` |
| **composition** | partial | [composition](#composition) |
| **cost** | partial | [Cost](#cost) |
| **descriptant** | present | [descriptant](#descriptant) |
| **invariant** | partial | `model.md` |
| **tests** | executed bounded checks | [tests](#tests) |

## Obernants

The typed relations around the forward model: the behaviour complement (what the code never does), the reverse reconstruction (every input compatible with an output) and specialised views.

| id | type | label | where |
|---|---|---|---|
| `behavior_complement` | behavior_complement | partial source derived model | [behavior_complement](#behavior-complement) |
| `reverse_reconstruction` | reverse_reconstruction | partial source derived model | [reverse_reconstruction](#reverse-reconstruction) |
| `export_predicate` | export_predicate | partial source derived model | [export_predicate](#export-predicate) |
| `dispatch` | dispatch | partial source derived model | [dispatch](#dispatch) |
| `rank_retention` | rank_retention | partial source derived model | [rank_retention](#rank-retention) |
| `error_precedence` | error_precedence | partial source derived model | [error_precedence](#error-precedence) |

## Model text


### descriptant

#### onto-wdx-entity-projection

Trim CR/comma/space; empty/[ /] marker returns; else lines++. Deserialize error→bad++. emit property/item/other; export=(live279∨sl.n>0∨taxon)∧!skip_wm. Item row before labels/aliases/sitelinks/selected claims. Secondary JSON error counts bad without undo.

Epoch 2026-10-31: source byte range [31509,38777) with source and range hashes, sharing parent lexical AST. Partial source-derived scope, no semantic proof.

### approximant

#### Scoped forward relation

Trim CR/comma/space; empty/[ /] marker returns; else lines++. Deserialize error→bad++. emit property/item/other; export=(live279∨sl.n>0∨taxon)∧!skip_wm. Item row before labels/aliases/sitelinks/selected claims. Secondary JSON error counts bad without undo.

Scope bytes [31509,38777) only. Preconditions and exceptions in this scope's catalog; no claims for parent orchestration.

Executable approximant gap: no useful percentage metric established for these categorical/effectful observations. No surrogate or production substitution. Future caps 1/2/5/10% require a metric/domain and evidence; no numerical error bound follows here.

### invariant

## Scoped observations

skip_wm excludes maintenance labels/sitelinks, not item/claims. Unknown props excluded. Deprecated claims and partial items-only bad aliases allowed.

### Cost

O(entity bytes+selected output bytes), raw labels parsed separately; Tsv buffering/compression delegated. Counters and partially appended buffers mutate before later errors.

### composition

#### Scope contribution

Trim CR/comma/space; empty/[ /] marker returns; else lines++. Deserialize error→bad++. emit property/item/other; export=(live279∨sl.n>0∨taxon)∧!skip_wm. Item row before labels/aliases/sitelinks/selected claims. Secondary JSON error counts bad without undo.

This fragment contributes only `entity-projection`. Parent owns input acquisition, surrounding dispatch and downstream joins. Complement and compatible antecedents are scoped in models.md rather than copied parent statements.

### models

### behavior_complement

skip_wm excludes maintenance labels/sitelinks, not item/claims. Unknown props excluded. Deprecated claims and partial items-only bad aliases allowed.

### reverse_reconstruction

Same rows permit unknown fields/props, control variants, optional defaults. Flags constrain live evidence not exact claims. Malformed aliases may explain items-only partial output.

### export_predicate

Commons-only sitelink can enable labels though no Wikipedia row.

### dispatch

Property props++ before ID gate; unknown type other++ no row.

### rank_retention

Deprecated279 does not set class flag but emits rank0.

### error_precedence

items/maxQ before LabelPick, item row before alias parse; no atomicity.

### tests

#### Evidence boundary

entity_rows, filters, 50-item/5000-byte-label/300-chunk stream_tails, Wikipedia/SQL/ID tests executed. 400000-item bzip test, dumps/extract/sample/subprocess/DB skipped.

Parent tests.md names actual selected tests; this scope does not claim all its branches executed. The compiled control listed in parent receipt applies only to the named mutated boundary.