René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Performance improvements","articleBody":"\u003c!--\r\nNOTE: THIS PROJECT IS NOT BEING ACTIVELY MAINTAINED.\r\n\r\nYou can file a suggestion in case someone decides to work on it.\r\n\r\nHowever, any proposed syntax changes will most likely be required to\r\nfirst go through standardization for consistency with other jsonpath\r\nimplementatioins.\r\n\r\nSee https://github.com/JSONPath-Plus/JSONPath/issues/124 .\r\n--\u003e\r\n\r\n## Motivation\r\n\r\nPerformance\r\n\r\n## Current behavior\r\n\r\nEach time I pass a path it needs to be parsed and the queried for all possible matching items\r\n\r\n## Desired behavior\r\n\r\nBe able to create and object for a path that stores the parsed query and allows me to execute it many times, skipping the overhead of path parsing. Additionally it would be good to specify the search limit.\r\n\r\nExample:\r\n```ts\r\nconst bookTitlePath = new JSONPath\u003cstring\u003e('$..book[*].title');\r\nconst bookPricePath = new JSONPath\u003cnumber\u003e('$..book[*].price');\r\n\r\nfunction getFirstBook(storeData: object): string {\r\n  return bookTitlePath.value(storeData); // Returns first match\r\n}\r\n\r\n// Consider books are in desc order of sales\r\nfunction getAveragePriceOfBestSellingBooks(storeData: object): number {\r\n  const prices: number[] = bookPricePath.query(storeData, 10); // Get up to 10 elements\r\n\r\n  // The only viable usage of reduce 😬 \r\n  return prices.reduce((total, price) =\u003e total + price, 0) / prices.length;\r\n}\r\n```\r\n\r\n## Alternatives considered\r\n\r\nCould not find any.","author":{"url":"https://github.com/romulof","@type":"Person","name":"romulof"},"datePublished":"2024-10-02T09:00:54.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/220/JSONPath/issues/220"}