fix: sqlite date string compatibility parsing only for valid dates

db-service/lib/cqn2sql.js

@@ -825,8 +825,8 @@ class CQN2SQLRenderer {
       case 'number': return `${val}` // REVISIT for HANA
       case 'object':
         if (val === null) return 'NULL'
-        if (val instanceof Date) return `'${val.toISOString()}'`
-        if (val instanceof Readable); // go on with default below
+        if (val instanceof Date) val = val.toJSON() // returns null if invalid
+        else if (val instanceof Readable); // go on with default below
         else if (Buffer.isBuffer(val)); // go on with default below
         else if (is_regexp(val)) val = val.source
         else val = JSON.stringify(val)

sqlite/lib/SQLiteService.js

@@ -162,7 +162,12 @@ class SQLiteService extends SQLService {
     val(v) {
       if (Buffer.isBuffer(v.val)) v.val = v.val.toString('base64')
       // intercept DateTime values and convert to Date objects to compare ISO Strings
-      else if (/\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}[Z+-]/.test(v.val)) v.val = new Date(v.val)
+      else if (/^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}(.\d{1,9})?(Z|[+-]\d{2}(:?\d{2})?)$/.test(v.val)) {
+        const date = new Date(v.val)
+        if (!Number.isNaN(date.getTime())) {
+          v.val = date
+        }
+      }
       return super.val(v)
     }
 

test/compliance/SELECT.test.js

@@ -221,6 +221,18 @@ describe('SELECT', () => {
       assert.strictEqual(res.length, 3, 'Ensure that all rows are coming back')
     })
 
+    test('compare with DateTime column', async () => {
+      const entity = `basic.literals.dateTime`
+      const dateTime = '1970-02-02T10:09:34Z'
+      const timestamp = dateTime.slice(0,-1) + '.000Z'
+      await DELETE.from(entity)
+      await INSERT({ dateTime }).into(entity)
+      const dateTimeMatches = await SELECT('dateTime').from(entity).where(`dateTime = `, dateTime)
+      assert.strictEqual(dateTimeMatches.length, 1, 'Ensure that the dateTime column matches the dateTime value')
+      const timestampMatches = await SELECT('dateTime').from(entity).where(`dateTime = `, timestamp)
+      assert.strictEqual(timestampMatches.length, 1, 'Ensure that the dateTime column matches the timestamp value')
+    })
+
     test.skip('ref select', async () => {
       // Currently not possible as cqn4sql does not recognize where.ref.id: 'basic.projection.globals' as an external source
       const cqn = {

test/scenarios/bookshop/update.test.js

@@ -24,6 +24,18 @@ describe('Bookshop - Update', () => {
     expect(res.data.author_ID).to.be.eq(201)
     expect(res.data.descr).to.be.eq('UPDATED')
   })
+
+  test('Update Book (with timestamp)', async () => {
+    const descr = `"${new Date().toISOString()}"`
+    const res = await PUT(
+      '/admin/Books(201)',
+      { descr },
+      admin,
+    )
+    expect(res.status).to.be.eq(200)
+    expect(res.data.descr).to.be.eq(descr)
+  })
+
   test('Update array of', async () => {
     // create book
     const insert = INSERT.into('sap.capire.bookshop.Books').columns(['ID']).values([150])