fix: unmarshal object_details json string into map to make response have nested json in spannerlisttables

[gRedHeadphone]

Description

Unmarshal object_details json string into map to make response have nested json in spannerlisttables instead of nested JSON string

PR Checklist

• Make sure you reviewed
  CONTRIBUTING.md
• Make sure to open an issue as a
  bug/issue
  before writing your code! That way we can discuss the change, evaluate
  designs, and agree on the general idea
• Ensure the tests and linter pass
• Code coverage does not decrease (if any source code was changed)
• Appropriate docs were updated (if necessary)
• Make sure to add ! if this involve a breaking change

🛠️ Fixes #1838

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[gRedHeadphone]

agent readability of output comparision

adk agent

queries = [
    "can you list all table name simple?",
    "can you get me detailed info about Products?",
]

main branch

A1
Here are the table names in your Spanner database: Account, AccountTransferAccount, Accounts, Customers, Follows, Knows, Person, Persons, and Products.

A2
Here are the detailed schema information for the table Products:

Schema Name: (empty string)
Object Name: Products
Object Type: BASE TABLE

Columns:

• ProductID (INT64, NOT NULL)
• ProductName (STRING(255), NULLABLE)
• Description (STRING(MAX), NULLABLE)
• Price (NUMERIC, NULLABLE)
• Category (STRING(100), NULLABLE)
• Manufacturer (STRING(100), NULLABLE)
• UnitsInStock (INT64, NULLABLE)

Constraints:

• CK_IS_NOT_NULL_Products_ProductID (CHECK, ProductID IS NOT NULL)
• PK_Products (PRIMARY KEY, PRIMARY KEY (ProductID))

Indexes:

• PRIMARY_KEY (PRIMARY_KEY, UNIQUE, index key column: ProductID)

nested json

A1
Here are the table names in your database: Account, AccountTransferAccount, Accounts, Customers, Follows, Knows, Person, Persons, and Products.

A2
Here are the details for the Products table:

• Columns:
  • ProductID (INT64, NOT NULL)
  • ProductName (STRING(255), NULLABLE)
  • Description (STRING(MAX), NULLABLE)
  • Price (NUMERIC, NULLABLE)
  • Category (STRING(100), NULLABLE)
  • Manufacturer (STRING(100), NULLABLE)
  • UnitsInStock (INT64, NULLABLE)
• Constraints:
  • PK_Products: PRIMARY KEY (ProductID)
  • CK_IS_NOT_NULL_Products_ProductID: CHECK (ProductID IS NOT NULL)
• Indexes:
  • PRIMARY_KEY: UNIQUE INDEX on ProductID

gemini cli

main branch

can you list all table names in spanner

✦ The table names in Spanner are: Account, AccountTransferAccount, Accounts, Customers, Follows,
Knows, Person, Persons, Products.

can you get me detailed info about Products?

╭────────────────────────────────────────────────────────────────────────────────────────────────╮
│ ✓ list_tables (mcptoolbox MCP Server) {"table_names":"Products","output_format":"detailed"} │
│ │
│ {"object_details":"{"schema_name":"","object_name":"Products","object_type":"BAS │
│ E │
│ TABLE","columns":[{"column_name":"ProductID","data_type":"INT64","ordinal_posit │
│ ion":1,"is_not_nullable":true,"column_default":null},{"column_name":"ProductName", │
│ "data_type":"STRING(255)","ordinal_position":2,"is_not_nullable":false,"column_def │
│ ault":null},{"column_name":"Description","data_type":"STRING(MAX)","ordinal_posit │
│ ion":3,"is_not_nullable":false,"column_default":null},{"column_name":"Price","dat │
│ a_type":"NUMERIC","ordinal_position":4,"is_not_nullable":false,"column_default":nu │
│ ll},{"column_name":"Category","data_type":"STRING(100)","ordinal_position":5,"is │
│ not_nullable":false,"column_default":null},{"column_name":"Manufacturer","data_typ │
│ e":"STRING(100)","ordinal_position":6,"is_not_nullable":false,"column_default":nul │
│ l},{"column_name":"UnitsInStock","data_type":"INT64","ordinal_position":7,"is_no │
│ t_nullable":false,"column_default":null}],"constraints":[{"constraint_name":"CK_IS │
│ NOT_NULL_Products_ProductID","constraint_type":"CHECK","constraint_definition":"Pro │
│ ductID IS NOT │
│ NULL","constraint_columns":[""],"foreign_key_referenced_table":null,"foreign_key_re │
│ ferenced_columns":[""]},{"constraint_name":"PK_Products","constraint_type":"PRIMA │
│ RY KEY","constraint_definition":"PRIMARY KEY │
│ (ProductID)","constraint_columns":["ProductID"],"foreign_key_referenced_table":null, │
│ "foreign_key_referenced_columns":[""]}],"indexes":[{"index_name":"PRIMARY_KEY"," │
│ index_type":"PRIMARY_KEY","is_unique":true,"is_null_filtered":false,"interleaved_in │
│ _table":"","index_key_columns":[{"column_name":"ProductID","ordering":"ASC"}], │
│ "storing_columns":[]}]}","object_name":"Products","schema_name":""} │
╰────────────────────────────────────────────────────────────────────────────────────────────────╯
✦ The detailed information for the Products table is as follows:

Table Name: Products
Object Type: BASE TABLE

Columns:

• ProductID: INT64, Not Nullable, Ordinal Position: 1
• ProductName: STRING(255), Nullable, Ordinal Position: 2
• Description: STRING(MAX), Nullable, Ordinal Position: 3
• Price: NUMERIC, Nullable, Ordinal Position: 4
• Category: STRING(100), Nullable, Ordinal Position: 5
• Manufacturer: STRING(100), Nullable, Ordinal Position: 6
• UnitsInStock: INT64, Nullable, Ordinal Position: 7

Constraints:

• CK_IS_NOT_NULL_Products_ProductID: CHECK constraint, definition: ProductID IS NOT NULL
• PK_Products: PRIMARY KEY constraint, definition: PRIMARY KEY (ProductID), columns: ProductID

Indexes:

• PRIMARY_KEY: PRIMARY KEY type, unique: true, null filtered: false, key columns: ProductID
  (ascending)

nested json

can you list all table names in spanner

╭────────────────────────────────────────────────────────────────────────────────────────────────╮
│ ✓ list_tables (mcptoolbox MCP Server) {"output_format":"simple"} │
│ │
│ {"object_details":{"name":"Account"},"object_name":"Account","schema_name":""} │
│ {"object_details":{"name":"AccountTransferAccount"},"object_name":"AccountTransferAccount", │
│ "schema_name":""} │
│ {"object_details":{"name":"Accounts"},"object_name":"Accounts","schema_name":""} │
│ {"object_details":{"name":"Customers"},"object_name":"Customers","schema_name":""} │
│ {"object_details":{"name":"Follows"},"object_name":"Follows","schema_name":""} │
│ {"object_details":{"name":"Knows"},"object_name":"Knows","schema_name":""} │
│ {"object_details":{"name":"Person"},"object_name":"Person","schema_name":""} │
│ {"object_details":{"name":"Persons"},"object_name":"Persons","schema_name":""} │
│ {"object_details":{"name":"Products"},"object_name":"Products","schema_name":""} │
╰────────────────────────────────────────────────────────────────────────────────────────────────╯
✦ - Account

• AccountTransferAccount
• Accounts
• Customers
• Follows
• Knows
• Person
• Persons
• Products

can you get me detailed info about Products?

╭────────────────────────────────────────────────────────────────────────────────────────────────╮
│ ✓ list_tables (mcptoolbox MCP Server) {"table_names":"Products","output_format":"detailed"} │
│ │
│ {"object_details":{"columns":[{"column_default":null,"column_name":"ProductID","data_type": │
│ "INT64","is_not_nullable":true,"ordinal_position":1},{"column_default":null,"column_name":" │
│ ProductName","data_type":"STRING(255)","is_not_nullable":false,"ordinal_position":2},{"colu │
│ mn_default":null,"column_name":"Description","data_type":"STRING(MAX)","is_not_nullable":fa │
│ lse,"ordinal_position":3},{"column_default":null,"column_name":"Price","data_type":"NUMERIC │
│ ","is_not_nullable":false,"ordinal_position":4},{"column_default":null,"column_name":"Categ │
│ ory","data_type":"STRING(100)","is_not_nullable":false,"ordinal_position":5},{"column_defau │
│ lt":null,"column_name":"Manufacturer","data_type":"STRING(100)","is_not_nullable":false,"or │
│ dinal_position":6},{"column_default":null,"column_name":"UnitsInStock","data_type":"INT64", │
│ "is_not_nullable":false,"ordinal_position":7}],"constraints":[{"constraint_columns":[""],"c │
│ onstraint_definition":"ProductID IS NOT │
│ NULL","constraint_name":"CK_IS_NOT_NULL_Products_ProductID","constraint_type":"CHECK","fore │
│ ign_key_referenced_columns":[""],"foreign_key_referenced_table":null},{"constraint_columns" │
│ :["ProductID"],"constraint_definition":"PRIMARY KEY │
│ (ProductID)","constraint_name":"PK_Products","constraint_type":"PRIMARY │
│ KEY","foreign_key_referenced_columns":[""],"foreign_key_referenced_table":null}],"indexes": │
│ [{"index_key_columns":[{"column_name":"ProductID","ordering":"ASC"}],"index_name":"PRIMARY_ │
│ KEY","index_type":"PRIMARY_KEY","interleaved_in_table":"","is_null_filtered":false,"is_uniq │
│ ue":true,"storing_columns":[]}],"object_name":"Products","object_type":"BASE │
│ TABLE","schema_name":""},"object_name":"Products","schema_name":""} │
╰────────────────────────────────────────────────────────────────────────────────────────────────╯
✦
1 {
2 "object_details": {
3 "columns": [
4 {
5 "column_default": null,
6 "column_name": "ProductID",
7 "data_type": "INT64",
8 "is_not_nullable": true,
9 "ordinal_position": 1
10 },
11 {
12 "column_default": null,
13 "column_name": "ProductName",
14 "data_type": "STRING(255)",
15 "is_not_nullable": false,
16 "ordinal_position": 2
17 },
18 {
19 "column_default": null,
20 "column_name": "Description",
21 "data_type": "STRING(MAX)",
22 "is_not_nullable": false,
23 "ordinal_position": 3
24 },
25 {
26 "column_default": null,
27 "column_name": "Price",
28 "data_type": "NUMERIC",
29 "is_not_nullable": false,
30 "ordinal_position": 4
31 },
32 {
33 "column_default": null,
34 "column_name": "Category",
35 "data_type": "STRING(100)",
36 "is_not_nullable": false,
37 "ordinal_position": 5
38 },
39 {
40 "column_default": null,
41 "column_name": "Manufacturer",
42 "data_type": "STRING(100)",
43 "is_not_nullable": false,
44 "ordinal_position": 6
45 },
46 {
47 "column_default": null,
48 "column_name": "UnitsInStock",
49 "data_type": "INT64",
50 "is_not_nullable": false,
51 "ordinal_position": 7
52 }
53 ],
54 "constraints": [
55 {
56 "constraint_columns": [
57 ""
58 ],
59 "constraint_definition": "ProductID IS NOT NULL",
60 "constraint_name": "CK_IS_NOT_NULL_Products_ProductID",
61 "constraint_type": "CHECK",
62 "foreign_key_referenced_columns": [
63 ""
64 ],
65 "foreign_key_referenced_table": null
66 },
67 {
68 "constraint_columns": [
69 "ProductID"
70 ],
71 "constraint_definition": "PRIMARY KEY (ProductID)",
72 "constraint_name": "PK_Products",
73 "constraint_type": "PRIMARY KEY",
74 "foreign_key_referenced_columns": [
75 ""
76 ],
77 "foreign_key_referenced_table": null
78 }
79 ],
80 "indexes": [
81 {
82 "index_key_columns": [
83 {
84 "column_name": "ProductID",
85 "ordering": "ASC"
86 }
87 ],
88 "index_name": "PRIMARY_KEY",
89 "index_type": "PRIMARY_KEY",
90 "interleaved_in_table": "",
91 "is_null_filtered": false,
92 "is_unique": true,
93 "storing_columns": []
94 }
95 ],
96 "object_name": "Products",
97 "object_type": "BASE TABLE",
98 "schema_name": ""
99 },
100 "object_name": "Products",
101 "schema_name": ""
102 }
The Products table has the following columns:

• ProductID: INT64, not nullable, primary key
• ProductName: STRING(255)
• Description: STRING(MAX)
• Price: NUMERIC
• Category: STRING(100)
• Manufacturer: STRING(100)
• UnitsInStock: INT64

It has a primary key constraint on ProductID and a check constraint ensuring ProductID is not
null. There is also a primary key index on ProductID.