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change firstSeen to mappedRelationsIndex

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This commit is contained in:
Marc-Roig 2023-01-05 16:44:18 +01:00
parent 8bf254faac
commit a05bdd83ae
1 changed files with 31 additions and 28 deletions
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59
packages/core/database/lib/entity-manager/relations-orderer.js
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@ -25,39 +25,41 @@ const sortConnectArray = (connectArr, initialArr = [], strictSort = true) => {
// Boolean to know if we have to recalculate the order of the relations
let needsSorting = false;
// Map to validate if relation is already in sortedConnect or DB.
const relInArray = initialArr.reduce((acc, rel) => ({ ...acc, [rel.id]: true }), {});
const relationInArray = initialArr.reduce((acc, rel) => ({ ...acc, [rel.id]: true }), {});
// Map to store the first index where a relation id is connected
const firstSeen = {};
const mappedRelationsIndex = connectArr.reduce((mapper, relation, index) => {
const adjacentRelId = relation.position?.before || relation.position?.after;
if (!relationInArray[adjacentRelId] && !mapper[adjacentRelId]) {
needsSorting = true;
}
return {
[relation.id]: mapper[relation.id] || index, // If the relation is already in the array, we keep the first index
...mapper,
};
}, {});
// Map to validate if connect relation has already been computed
const computedIdx = {};
connectArr.forEach((rel, idx) => {
// If adjacent relation is not in the database or seen yet in the connect array
// then we need to sort the connect array
const adjacentRelId = rel.position?.before || rel.position?.after;
if (!relInArray[adjacentRelId] && !firstSeen[adjacentRelId]) needsSorting = true;
// Populate firstSeen
if (!(rel.id in firstSeen)) firstSeen[rel.id] = idx;
});
// If we don't need to sort the connect array, we can return it as is
if (!needsSorting) return connectArr;
// Add relation to sortedConnect and mark it as seen
const pushRelation = (rel) => {
sortedConnect.push(rel);
relInArray[rel.id] = true;
const pushRelation = (relation) => {
sortedConnect.push(relation);
relationInArray[relation.id] = true;
};
// Recursively compute in which order the relation should be connected
const computeRelation = (rel, idx, relationsSeenInBranch) => {
const adjacentRelId = rel.position?.before || rel.position?.after;
const computeRelation = (relation, idx, relationsSeenInBranch) => {
const adjacentRelId = relation.position?.before || relation.position?.after;
// This connect has already been computed
if (idx in computedIdx) return;
if (!adjacentRelId || relInArray[adjacentRelId]) {
return pushRelation(rel);
if (!adjacentRelId || relationInArray[adjacentRelId]) {
return pushRelation(relation);
}
// If the relation has already been seen in the current branch,
@ -70,7 +72,7 @@ const sortConnectArray = (connectArr, initialArr = [], strictSort = true) => {
}
// Look if id is referenced elsewhere in the array
const adjacentRelIdx = firstSeen[adjacentRelId];
const adjacentRelIdx = mappedRelationsIndex[adjacentRelId];
if (adjacentRelIdx) {
const adjacentRel = connectArr[adjacentRelIdx];
@ -78,25 +80,27 @@ const sortConnectArray = (connectArr, initialArr = [], strictSort = true) => {
// Mark adjacent relation idx as computed,
// so it is not computed again later in the loop
computedIdx[adjacentRelIdx] = true;
computeRelation(adjacentRel, idx, { ...relationsSeenInBranch, [rel.id]: true });
pushRelation(rel);
computeRelation(adjacentRel, idx, { ...relationsSeenInBranch, [relation.id]: true });
pushRelation(relation);
} else if (strictSort) {
// If we reach this point, it means that the adjacent relation is not in the connect array
// and it is not in the database. This should not happen.
throw new InvalidRelationError(
`There was a problem connecting relation with id ${rel.id} at position ${JSON.stringify(
rel.position
`There was a problem connecting relation with id ${
relation.id
} at position ${JSON.stringify(
relation.position
)}. The relation with id ${adjacentRelId} needs to be connected first.`
);
} else {
// We are in non-strict mode so we can push the relation.
pushRelation({ id: rel.id, position: { end: true } });
pushRelation({ id: relation.id, position: { end: true } });
}
};
// Iterate over connectArr and populate sortedConnect
connectArr.forEach((rel, idx) => {
computeRelation(rel, idx, {});
connectArr.forEach((relation, idx) => {
computeRelation(relation, idx, {});
});
return sortedConnect;
@ -184,8 +188,7 @@ const relationsOrderer = (initArr, idColumn, orderColumn, strict) => {
return this;
},
connect(relations) {
const sortedRelations = sortConnectArray(relations, arr, strict);
sortedRelations.forEach((relation) => {
sortConnectArray(_.castArray(relations), arr, strict).forEach((relation) => {
this.disconnect(relation);
try {