Fix lucene filtering of all types by parsing values as expected types, and correctly wrapping non-numeric types while building queries
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@ -3,13 +3,35 @@ const env = require("../../../environment")
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const fetch = require("node-fetch")
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/**
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* Escapes any characters in a string which lucene searches require to be
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* escaped.
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* @param value The value to escape
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* @returns {string}
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* Preprocesses a value before going into a lucene search.
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* Transforms strings to lowercase and wraps strings and bools in quotes.
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* @param value The value to process
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* @param options The preprocess options
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* @returns {string|*}
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*/
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const luceneEscape = value => {
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return `${value}`.replace(/[ #+\-&|!(){}\]^"~*?:\\]/g, "\\$&")
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const preprocess = (
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value,
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options = { escape: true, lowercase: true, wrap: true }
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) => {
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// Determine if type needs wrapped
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const originalType = typeof value
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// Convert to lowercase
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if (options.lowercase) {
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value = value?.toLowerCase ? value.toLowerCase() : value
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}
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// Escape characters
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if (options.escape) {
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value = `${value}`.replace(/[ #+\-&|!(){}\]^"~*?:\\]/g, "\\$&")
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}
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// Wrap in quotes
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if (options.wrap) {
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value = originalType === "number" ? value : `"${value}"`
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}
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return value
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}
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/**
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@ -113,7 +135,10 @@ class QueryBuilder {
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function build(structure, queryFn) {
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for (let [key, value] of Object.entries(structure)) {
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const expression = queryFn(luceneEscape(key.replace(/ /, "_")), value)
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key = preprocess(key.replace(/ /, "_"), {
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escape: true,
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})
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const expression = queryFn(key, value)
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if (expression == null) {
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continue
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}
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@ -124,7 +149,14 @@ class QueryBuilder {
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// Construct the actual lucene search query string from JSON structure
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if (this.query.string) {
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build(this.query.string, (key, value) => {
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return value ? `${key}:${luceneEscape(value.toLowerCase())}*` : null
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if (!value) {
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return null
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}
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value = preprocess(value, {
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escape: true,
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lowercase: true,
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})
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return `${key}:${value}*`
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})
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}
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if (this.query.range) {
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@ -138,30 +170,37 @@ class QueryBuilder {
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if (value.high == null || value.high === "") {
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return null
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}
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return `${key}:[${value.low} TO ${value.high}]`
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const low = preprocess(value.low)
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const high = preprocess(value.high)
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return `${key}:[${low} TO ${high}]`
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})
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}
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if (this.query.fuzzy) {
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build(this.query.fuzzy, (key, value) => {
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return value ? `${key}:${luceneEscape(value.toLowerCase())}~` : null
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if (!value) {
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return null
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}
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value = preprocess(value, {
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escape: true,
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lowercase: true,
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})
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return `${key}:${value}~`
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})
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}
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if (this.query.equal) {
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build(this.query.equal, (key, value) => {
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const escapedValue = luceneEscape(value.toLowerCase())
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// have to do the or to manage straight values, or strings
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return value
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? `(${key}:${escapedValue} OR ${key}:"${escapedValue}")`
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: null
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if (!value) {
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return null
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}
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return `${key}:${preprocess(value)}`
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})
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}
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if (this.query.notEqual) {
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build(this.query.notEqual, (key, value) => {
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const escapedValue = luceneEscape(value.toLowerCase())
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// have to do the or to manage straight values, or strings
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return value
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? `(!${key}:${escapedValue} OR !${key}:"${escapedValue}")`
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: null
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if (!value) {
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return null
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}
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return `!${key}:${preprocess(value)}`
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})
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}
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if (this.query.empty) {
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@ -15,10 +15,16 @@ export const buildLuceneQuery = filter => {
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if (Array.isArray(filter)) {
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filter.forEach(expression => {
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let { operator, field, type, value } = expression
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// Ensure date fields are transformed into ISO strings
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// Parse all values into correct types
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if (type === "datetime" && value) {
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value = new Date(value).toISOString()
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}
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if (type === "number") {
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value = parseFloat(value)
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}
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if (type === "boolean") {
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value = value?.toLowerCase() === "true"
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}
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if (operator.startsWith("range")) {
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if (!query.range[field]) {
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query.range[field] = {
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@ -42,10 +48,10 @@ export const buildLuceneQuery = filter => {
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// Transform boolean filters to cope with null.
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// "equals false" needs to be "not equals true"
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// "not equals false" needs to be "equals true"
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if (operator === "equal" && value === "false") {
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query.notEqual[field] = "true"
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} else if (operator === "notEqual" && value === "false") {
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query.equal[field] = "true"
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if (operator === "equal" && value === false) {
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query.notEqual[field] = true
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} else if (operator === "notEqual" && value === false) {
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query.equal[field] = true
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} else {
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query[operator][field] = value
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}
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