GetQueryResults unicodeC Example
#include <C_CkRestW.h>
#include <C_CkAuthAwsW.h>
#include <C_CkJsonObjectW.h>
#include <C_CkStringBuilderW.h>
void ChilkatSample(void)
{
HCkRestW rest;
BOOL success;
HCkAuthAwsW authAws;
HCkJsonObjectW json;
HCkStringBuilderW sbRequestBody;
HCkStringBuilderW sbResponseBody;
int respStatusCode;
HCkJsonObjectW jResp;
int CaseSensitive;
const wchar_t *CatalogName;
const wchar_t *Label;
const wchar_t *Name;
const wchar_t *Nullable;
int Precision;
int Scale;
const wchar_t *SchemaName;
const wchar_t *TableName;
const wchar_t *v_Type;
int j;
int count_j;
const wchar_t *VarCharValue;
const wchar_t *NextToken;
int UpdateCount;
int i;
int count_i;
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
rest = CkRestW_Create();
authAws = CkAuthAwsW_Create();
CkAuthAwsW_putAccessKey(authAws,L"AWS_ACCESS_KEY");
CkAuthAwsW_putSecretKey(authAws,L"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.)
CkAuthAwsW_putRegion(authAws,L"us-west-2");
CkAuthAwsW_putServiceName(authAws,L"athena");
// SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
CkRestW_SetAuthAws(rest,authAws);
// URL: https://athena.us-west-2.amazonaws.com/
// Use the same region as specified above.
success = CkRestW_Connect(rest,L"athena.us-west-2.amazonaws.com",443,TRUE,TRUE);
if (success != TRUE) {
wprintf(L"ConnectFailReason: %d\n",CkRestW_getConnectFailReason(rest));
wprintf(L"%s\n",CkRestW_lastErrorText(rest));
CkRestW_Dispose(rest);
CkAuthAwsW_Dispose(authAws);
return;
}
// 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
json = CkJsonObjectW_Create();
CkJsonObjectW_UpdateInt(json,L"MaxResults",123);
CkJsonObjectW_UpdateString(json,L"NextToken",L"string");
CkJsonObjectW_UpdateString(json,L"QueryExecutionId",L"string");
// The JSON request body created by the above code:
// {
// "MaxResults": number,
// "NextToken": "string",
// "QueryExecutionId": "string"
// }
CkRestW_AddHeader(rest,L"Content-Type",L"application/x-amz-json-1.1");
CkRestW_AddHeader(rest,L"X-Amz-Target",L"AmazonAthena.GetQueryResults");
sbRequestBody = CkStringBuilderW_Create();
CkJsonObjectW_EmitSb(json,sbRequestBody);
sbResponseBody = CkStringBuilderW_Create();
success = CkRestW_FullRequestSb(rest,L"POST",L"/",sbRequestBody,sbResponseBody);
if (success != TRUE) {
wprintf(L"%s\n",CkRestW_lastErrorText(rest));
CkRestW_Dispose(rest);
CkAuthAwsW_Dispose(authAws);
CkJsonObjectW_Dispose(json);
CkStringBuilderW_Dispose(sbRequestBody);
CkStringBuilderW_Dispose(sbResponseBody);
return;
}
respStatusCode = CkRestW_getResponseStatusCode(rest);
wprintf(L"response status code = %d\n",respStatusCode);
if (respStatusCode != 200) {
wprintf(L"Response Header:\n");
wprintf(L"%s\n",CkRestW_responseHeader(rest));
wprintf(L"Response Body:\n");
wprintf(L"%s\n",CkStringBuilderW_getAsString(sbResponseBody));
CkRestW_Dispose(rest);
CkAuthAwsW_Dispose(authAws);
CkJsonObjectW_Dispose(json);
CkStringBuilderW_Dispose(sbRequestBody);
CkStringBuilderW_Dispose(sbResponseBody);
return;
}
jResp = CkJsonObjectW_Create();
CkJsonObjectW_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
// Chilkat functions returning "const char *" return a pointer to temporary internal memory owned and managed by Chilkat.
// See this example explaining how this memory should be used: const char * functions.
NextToken = CkJsonObjectW_stringOf(jResp,L"NextToken");
UpdateCount = CkJsonObjectW_IntOf(jResp,L"UpdateCount");
i = 0;
count_i = CkJsonObjectW_SizeOfArray(jResp,L"ResultSet.ResultSetMetadata.ColumnInfo");
while (i < count_i) {
CkJsonObjectW_putI(jResp,i);
CaseSensitive = CkJsonObjectW_IntOf(jResp,L"ResultSet.ResultSetMetadata.ColumnInfo[i].CaseSensitive");
CatalogName = CkJsonObjectW_stringOf(jResp,L"ResultSet.ResultSetMetadata.ColumnInfo[i].CatalogName");
Label = CkJsonObjectW_stringOf(jResp,L"ResultSet.ResultSetMetadata.ColumnInfo[i].Label");
Name = CkJsonObjectW_stringOf(jResp,L"ResultSet.ResultSetMetadata.ColumnInfo[i].Name");
Nullable = CkJsonObjectW_stringOf(jResp,L"ResultSet.ResultSetMetadata.ColumnInfo[i].Nullable");
Precision = CkJsonObjectW_IntOf(jResp,L"ResultSet.ResultSetMetadata.ColumnInfo[i].Precision");
Scale = CkJsonObjectW_IntOf(jResp,L"ResultSet.ResultSetMetadata.ColumnInfo[i].Scale");
SchemaName = CkJsonObjectW_stringOf(jResp,L"ResultSet.ResultSetMetadata.ColumnInfo[i].SchemaName");
TableName = CkJsonObjectW_stringOf(jResp,L"ResultSet.ResultSetMetadata.ColumnInfo[i].TableName");
v_Type = CkJsonObjectW_stringOf(jResp,L"ResultSet.ResultSetMetadata.ColumnInfo[i].Type");
i = i + 1;
}
i = 0;
count_i = CkJsonObjectW_SizeOfArray(jResp,L"ResultSet.Rows");
while (i < count_i) {
CkJsonObjectW_putI(jResp,i);
j = 0;
count_j = CkJsonObjectW_SizeOfArray(jResp,L"ResultSet.Rows[i].Data");
while (j < count_j) {
CkJsonObjectW_putJ(jResp,j);
VarCharValue = CkJsonObjectW_stringOf(jResp,L"ResultSet.Rows[i].Data[j].VarCharValue");
j = j + 1;
}
i = 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
// }
CkRestW_Dispose(rest);
CkAuthAwsW_Dispose(authAws);
CkJsonObjectW_Dispose(json);
CkStringBuilderW_Dispose(sbRequestBody);
CkStringBuilderW_Dispose(sbResponseBody);
CkJsonObjectW_Dispose(jResp);
}
