Preview Transform
curl --request POST \
--url https://api.merchantops.ai/api/lakehouse/documents/{document_id}/mapping/preview-transform \
--header 'Content-Type: application/json' \
--data '
{
"column_mapping": {},
"field_rules": {},
"group_id": "<string>",
"policy_metadata": {
"date_format": "MM/DD/YYYY",
"effective_date": "<string>",
"notes": "<string>"
}
}
'import requests
url = "https://api.merchantops.ai/api/lakehouse/documents/{document_id}/mapping/preview-transform"
payload = {
"column_mapping": {},
"field_rules": {},
"group_id": "<string>",
"policy_metadata": {
"date_format": "MM/DD/YYYY",
"effective_date": "<string>",
"notes": "<string>"
}
}
headers = {"Content-Type": "application/json"}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {'Content-Type': 'application/json'},
body: JSON.stringify({
column_mapping: {},
field_rules: {},
group_id: '<string>',
policy_metadata: {date_format: 'MM/DD/YYYY', effective_date: '<string>', notes: '<string>'}
})
};
fetch('https://api.merchantops.ai/api/lakehouse/documents/{document_id}/mapping/preview-transform', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://api.merchantops.ai/api/lakehouse/documents/{document_id}/mapping/preview-transform",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'column_mapping' => [
],
'field_rules' => [
],
'group_id' => '<string>',
'policy_metadata' => [
'date_format' => 'MM/DD/YYYY',
'effective_date' => '<string>',
'notes' => '<string>'
]
]),
CURLOPT_HTTPHEADER => [
"Content-Type: application/json"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://api.merchantops.ai/api/lakehouse/documents/{document_id}/mapping/preview-transform"
payload := strings.NewReader("{\n \"column_mapping\": {},\n \"field_rules\": {},\n \"group_id\": \"<string>\",\n \"policy_metadata\": {\n \"date_format\": \"MM/DD/YYYY\",\n \"effective_date\": \"<string>\",\n \"notes\": \"<string>\"\n }\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://api.merchantops.ai/api/lakehouse/documents/{document_id}/mapping/preview-transform")
.header("Content-Type", "application/json")
.body("{\n \"column_mapping\": {},\n \"field_rules\": {},\n \"group_id\": \"<string>\",\n \"policy_metadata\": {\n \"date_format\": \"MM/DD/YYYY\",\n \"effective_date\": \"<string>\",\n \"notes\": \"<string>\"\n }\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.merchantops.ai/api/lakehouse/documents/{document_id}/mapping/preview-transform")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n \"column_mapping\": {},\n \"field_rules\": {},\n \"group_id\": \"<string>\",\n \"policy_metadata\": {\n \"date_format\": \"MM/DD/YYYY\",\n \"effective_date\": \"<string>\",\n \"notes\": \"<string>\"\n }\n}"
response = http.request(request)
puts response.read_body{
"document_id": "<string>",
"source_row_count": 123,
"transformed_rows": [
{}
],
"expansion_note": "<string>"
}{
"detail": [
{
"loc": [
"<string>"
],
"msg": "<string>",
"type": "<string>",
"ctx": {},
"input": "<unknown>"
}
]
}Product Lakehouse
Preview Transform
Preview the result of applying field rules to sample data.
Pure dry-run — does not persist anything. Returns transformed rows so the user can see what the extraction will produce.
Requires: document:read permission
POST
/
api
/
lakehouse
/
documents
/
{document_id}
/
mapping
/
preview-transform
Preview Transform
curl --request POST \
--url https://api.merchantops.ai/api/lakehouse/documents/{document_id}/mapping/preview-transform \
--header 'Content-Type: application/json' \
--data '
{
"column_mapping": {},
"field_rules": {},
"group_id": "<string>",
"policy_metadata": {
"date_format": "MM/DD/YYYY",
"effective_date": "<string>",
"notes": "<string>"
}
}
'import requests
url = "https://api.merchantops.ai/api/lakehouse/documents/{document_id}/mapping/preview-transform"
payload = {
"column_mapping": {},
"field_rules": {},
"group_id": "<string>",
"policy_metadata": {
"date_format": "MM/DD/YYYY",
"effective_date": "<string>",
"notes": "<string>"
}
}
headers = {"Content-Type": "application/json"}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {'Content-Type': 'application/json'},
body: JSON.stringify({
column_mapping: {},
field_rules: {},
group_id: '<string>',
policy_metadata: {date_format: 'MM/DD/YYYY', effective_date: '<string>', notes: '<string>'}
})
};
fetch('https://api.merchantops.ai/api/lakehouse/documents/{document_id}/mapping/preview-transform', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://api.merchantops.ai/api/lakehouse/documents/{document_id}/mapping/preview-transform",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'column_mapping' => [
],
'field_rules' => [
],
'group_id' => '<string>',
'policy_metadata' => [
'date_format' => 'MM/DD/YYYY',
'effective_date' => '<string>',
'notes' => '<string>'
]
]),
CURLOPT_HTTPHEADER => [
"Content-Type: application/json"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://api.merchantops.ai/api/lakehouse/documents/{document_id}/mapping/preview-transform"
payload := strings.NewReader("{\n \"column_mapping\": {},\n \"field_rules\": {},\n \"group_id\": \"<string>\",\n \"policy_metadata\": {\n \"date_format\": \"MM/DD/YYYY\",\n \"effective_date\": \"<string>\",\n \"notes\": \"<string>\"\n }\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://api.merchantops.ai/api/lakehouse/documents/{document_id}/mapping/preview-transform")
.header("Content-Type", "application/json")
.body("{\n \"column_mapping\": {},\n \"field_rules\": {},\n \"group_id\": \"<string>\",\n \"policy_metadata\": {\n \"date_format\": \"MM/DD/YYYY\",\n \"effective_date\": \"<string>\",\n \"notes\": \"<string>\"\n }\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.merchantops.ai/api/lakehouse/documents/{document_id}/mapping/preview-transform")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n \"column_mapping\": {},\n \"field_rules\": {},\n \"group_id\": \"<string>\",\n \"policy_metadata\": {\n \"date_format\": \"MM/DD/YYYY\",\n \"effective_date\": \"<string>\",\n \"notes\": \"<string>\"\n }\n}"
response = http.request(request)
puts response.read_body{
"document_id": "<string>",
"source_row_count": 123,
"transformed_rows": [
{}
],
"expansion_note": "<string>"
}{
"detail": [
{
"loc": [
"<string>"
],
"msg": "<string>",
"type": "<string>",
"ctx": {},
"input": "<unknown>"
}
]
}Path Parameters
Cookies
Body
application/json