feat: cds.Vector support for the HANAService (#442)

Co-authored-by: Dr. David A. Kunz <[email protected]>

hana/lib/HANAService.js

@@ -933,8 +933,9 @@ class HANAService extends SQLService {
       LargeBinary: () => `NVARCHAR(2147483647)`,
       Binary: () => `NVARCHAR(2147483647)`,
       array: () => `NVARCHAR(2147483647)`,
+      Vector: () => `NVARCHAR(2147483647)`,
 
-      // Javascript types
+      // JavaScript types
       string: () => `NVARCHAR(2147483647)`,
       number: () => `DOUBLE`
     }
@@ -947,6 +948,7 @@ class HANAService extends SQLService {
       // Not encoded string with CESU-8 or some UTF-8 except a surrogate pair at "base64_decode" function
       Binary: e => `HEXTOBIN(${e})`,
       Boolean: e => `CASE WHEN ${e} = 'true' THEN TRUE WHEN ${e} = 'false' THEN FALSE END`,
+      Vector: e => `TO_REAL_VECTOR(${e})`,
     }
 
     static OutputConverters = {
@@ -957,6 +959,7 @@ class HANAService extends SQLService {
       Time: e => `to_char(${e}, 'HH24:MI:SS')`,
       DateTime: e => `to_char(${e}, 'YYYY-MM-DD"T"HH24:MI:SS"Z"')`,
       Timestamp: e => `to_char(${e}, 'YYYY-MM-DD"T"HH24:MI:SS.FF3"Z"')`,
+      Vector: e => `TO_NVARCHAR(${e})`,
     }
   }
 

test/compliance/resources/db/basic/literals.cds

@@ -53,6 +53,13 @@ entity array {
 }
 
 entity binaries {
-     binary : Binary;
-     largebinary : LargeBinary;
+    binary      : Binary;
+    largebinary : LargeBinary;
 }
+
+
+/* Excluded from the tests until fully supported
+entity vectors {
+    vector : Vector;
+}
+*/

test/compliance/resources/db/basic/literals/basic.literals.vectors.js

@@ -0,0 +1,9 @@
+
+module.exports = [
+  {
+    vector: null,
+  },
+  {
+    vector: '[0.1,0.2,0.3]',
+  },
+]