feat: untyped param types

samples/dml.js

@@ -288,6 +288,21 @@ function updateUsingDmlWithStruct(instanceId, databaseId, projectId) {
         params: {
           name: nameStruct,
         },
+        types: {
+          name: {
+            type: 'struct',
+            fields: [
+              {
+                name: 'FirstName',
+                type: 'string',
+              },
+              {
+                name: 'LastName',
+                type: 'string',
+              },
+            ],
+          },
+        },
       });
 
       console.log(`Successfully updated ${rowCount} record.`);

samples/struct.js

@@ -111,6 +111,21 @@ async function queryDataWithStruct(instanceId, databaseId, projectId) {
     params: {
       name: nameStruct,
     },
+    types: {
+      name: {
+        type: 'struct',
+        fields: [
+          {
+            name: 'FirstName',
+            type: 'string',
+          },
+          {
+            name: 'LastName',
+            type: 'string',
+          },
+        ],
+      },
+    },
   };
 
   // Queries rows from the Singers table
@@ -250,6 +265,21 @@ async function queryStructField(instanceId, databaseId, projectId) {
     params: {
       name: nameStruct,
     },
+    types: {
+      name: {
+        type: 'struct',
+        fields: [
+          {
+            name: 'FirstName',
+            type: 'string',
+          },
+          {
+            name: 'LastName',
+            type: 'string',
+          },
+        ],
+      },
+    },
   };
 
   // Queries rows from the Singers table

src/codec.ts

@@ -597,10 +597,6 @@ function getType(value: Value): Type {
     return {type: 'bool'};
   }
 
-  if (is.string(value)) {
-    return {type: 'string'};
-  }
-
   if (Buffer.isBuffer(value)) {
     return {type: 'bytes'};
   }
@@ -643,6 +639,7 @@ function getType(value: Value): Type {
     return {type: 'json'};
   }
 
+  // String type is also returned as unspecified to allow untyped parameters
   return {type: 'unspecified'};
 }
 

src/transaction.ts

@@ -1282,7 +1282,10 @@ export class Snapshot extends EventEmitter {
     if (!is.empty(typeMap)) {
       Object.keys(typeMap).forEach(param => {
         const type = typeMap[param];
-        paramTypes[param] = codec.createTypeObject(type);
+        const typeObject = codec.createTypeObject(type);
+        if (typeObject.code !== 'TYPE_CODE_UNSPECIFIED') {
+          paramTypes[param] = codec.createTypeObject(type);
+        }
       });
     }