Chilkat Online Tools

GetQueryResults TCL Example

Athena

load ./chilkat.dll

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

set rest [new_CkRest]

set authAws [new_CkAuthAws]

CkAuthAws_put_AccessKey $authAws "AWS_ACCESS_KEY"
CkAuthAws_put_SecretKey $authAws "AWS_SECRET_KEY"

# Don't forget to change the region to your particular region. (Also make the same change in the call to Connect below.)
CkAuthAws_put_Region $authAws "us-west-2"
CkAuthAws_put_ServiceName $authAws "athena"
# SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
CkRest_SetAuthAws $rest $authAws

# URL: https://athena.us-west-2.amazonaws.com/
# Use the same region as specified above.
set success [CkRest_Connect $rest "athena.us-west-2.amazonaws.com" 443 1 1]
if {$success != 1} then {
    puts "ConnectFailReason: [CkRest_get_ConnectFailReason $rest]"
    puts [CkRest_lastErrorText $rest]
    delete_CkRest $rest
    delete_CkAuthAws $authAws
    exit
}

# The following code creates the JSON request body.
# The JSON created by this code is shown below.

# Use this online tool to generate code from sample JSON:
# Generate Code to Create JSON

set json [new_CkJsonObject]

CkJsonObject_UpdateInt $json "MaxResults" 123
CkJsonObject_UpdateString $json "NextToken" "string"
CkJsonObject_UpdateString $json "QueryExecutionId" "string"

# The JSON request body created by the above code:

# {
#   "MaxResults": number,
#   "NextToken": "string",
#   "QueryExecutionId": "string"
# }

CkRest_AddHeader $rest "Content-Type" "application/x-amz-json-1.1"
CkRest_AddHeader $rest "X-Amz-Target" "AmazonAthena.GetQueryResults"

set sbRequestBody [new_CkStringBuilder]

CkJsonObject_EmitSb $json $sbRequestBody
set sbResponseBody [new_CkStringBuilder]

set success [CkRest_FullRequestSb $rest "POST" "/" $sbRequestBody $sbResponseBody]
if {$success != 1} then {
    puts [CkRest_lastErrorText $rest]
    delete_CkRest $rest
    delete_CkAuthAws $authAws
    delete_CkJsonObject $json
    delete_CkStringBuilder $sbRequestBody
    delete_CkStringBuilder $sbResponseBody
    exit
}

set respStatusCode [CkRest_get_ResponseStatusCode $rest]
puts "response status code = $respStatusCode"
if {$respStatusCode != 200} then {
    puts "Response Header:"
    puts [CkRest_responseHeader $rest]
    puts "Response Body:"
    puts [CkStringBuilder_getAsString $sbResponseBody]
    delete_CkRest $rest
    delete_CkAuthAws $authAws
    delete_CkJsonObject $json
    delete_CkStringBuilder $sbRequestBody
    delete_CkStringBuilder $sbResponseBody
    exit
}

set jResp [new_CkJsonObject]

CkJsonObject_LoadSb $jResp $sbResponseBody

# The following code parses the JSON response.
# A sample JSON response is shown below the sample code.

# Use this online tool to generate parsing code from sample JSON:
# Generate Parsing Code from JSON

set NextToken [CkJsonObject_stringOf $jResp "NextToken"]
set UpdateCount [CkJsonObject_IntOf $jResp "UpdateCount"]
set i 0
set count_i [CkJsonObject_SizeOfArray $jResp "ResultSet.ResultSetMetadata.ColumnInfo"]
while {$i < $count_i} {
    CkJsonObject_put_I $jResp $i
    set CaseSensitive [CkJsonObject_IntOf $jResp "ResultSet.ResultSetMetadata.ColumnInfo[i].CaseSensitive"]
    set CatalogName [CkJsonObject_stringOf $jResp "ResultSet.ResultSetMetadata.ColumnInfo[i].CatalogName"]
    set Label [CkJsonObject_stringOf $jResp "ResultSet.ResultSetMetadata.ColumnInfo[i].Label"]
    set Name [CkJsonObject_stringOf $jResp "ResultSet.ResultSetMetadata.ColumnInfo[i].Name"]
    set Nullable [CkJsonObject_stringOf $jResp "ResultSet.ResultSetMetadata.ColumnInfo[i].Nullable"]
    set Precision [CkJsonObject_IntOf $jResp "ResultSet.ResultSetMetadata.ColumnInfo[i].Precision"]
    set Scale [CkJsonObject_IntOf $jResp "ResultSet.ResultSetMetadata.ColumnInfo[i].Scale"]
    set SchemaName [CkJsonObject_stringOf $jResp "ResultSet.ResultSetMetadata.ColumnInfo[i].SchemaName"]
    set TableName [CkJsonObject_stringOf $jResp "ResultSet.ResultSetMetadata.ColumnInfo[i].TableName"]
    set v_Type [CkJsonObject_stringOf $jResp "ResultSet.ResultSetMetadata.ColumnInfo[i].Type"]
    set i [expr $i + 1]
}
set i 0
set count_i [CkJsonObject_SizeOfArray $jResp "ResultSet.Rows"]
while {$i < $count_i} {
    CkJsonObject_put_I $jResp $i
    set j 0
    set count_j [CkJsonObject_SizeOfArray $jResp "ResultSet.Rows[i].Data"]
    while {$j < $count_j} {
        CkJsonObject_put_J $jResp $j
        set VarCharValue [CkJsonObject_stringOf $jResp "ResultSet.Rows[i].Data[j].VarCharValue"]
        set j [expr $j + 1]
    }
    set i [expr $i + 1]
}

# A sample JSON response body parsed by the above code:

# {
#   "NextToken": "string",
#   "ResultSet": {
#     "ResultSetMetadata": {
#       "ColumnInfo": [
#         {
#           "CaseSensitive": boolean,
#           "CatalogName": "string",
#           "Label": "string",
#           "Name": "string",
#           "Nullable": "string",
#           "Precision": number,
#           "Scale": number,
#           "SchemaName": "string",
#           "TableName": "string",
#           "Type": "string"
#         }
#       ]
#     },
#     "Rows": [
#       {
#         "Data": [
#           {
#             "VarCharValue": "string"
#           }
#         ]
#       }
#     ]
#   },
#   "UpdateCount": number
# }

delete_CkRest $rest
delete_CkAuthAws $authAws
delete_CkJsonObject $json
delete_CkStringBuilder $sbRequestBody
delete_CkStringBuilder $sbResponseBody
delete_CkJsonObject $jResp