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faster implementation of ancestors

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This commit is contained in:
zadam 2020-05-23 23:57:59 +02:00
parent 9ede77aead
commit e2490f9975
1 changed files with 7 additions and 9 deletions
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16
src/services/search/expressions/descendant_of.js
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@ -2,6 +2,7 @@
const Expression = require('./expression'); const Expression = require('./expression');
const NoteSet = require('../note_set'); const NoteSet = require('../note_set');
const noteCache = require('../../note_cache/note_cache');
class DescendantOfExp extends Expression { class DescendantOfExp extends Expression {
constructor(subExpression) { constructor(subExpression) {
@ -11,19 +12,16 @@ class DescendantOfExp extends Expression {
} }
execute(inputNoteSet, searchContext) { execute(inputNoteSet, searchContext) {
const resNoteSet = new NoteSet(); const subInputNoteSet = new NoteSet(Object.values(noteCache.notes));
for (const note of inputNoteSet.notes) {
const subInputNoteSet = new NoteSet(note.ancestors);
const subResNoteSet = this.subExpression.execute(subInputNoteSet, searchContext); const subResNoteSet = this.subExpression.execute(subInputNoteSet, searchContext);
if (subResNoteSet.notes.length > 0) { const subTreeNoteSet = new NoteSet();
resNoteSet.add(note);
} for (const note of subResNoteSet.notes) {
subTreeNoteSet.addAll(note.subtreeNotes);
} }
return resNoteSet; return inputNoteSet.intersection(subTreeNoteSet);
} }
} }