Automatically detect and extract tabular data from documents

static void RunExtraction()
{
    Configuration.RegisterGdPictureKey("GDPICTURE_KEY");
    Configuration.RegisterLLMProvider(new OpenAIProvider("OPENAI_API_KEY"));
    Configuration.ResourcesFolder = "resources";

    // Building the component.
    ProcessorComponent component = buildComponent();

    // Process the document.
    ProcessorResult result = new DocumentProcessor().Process("invoice.pdf", component);

    // Analyze results.
    if (result.ExtractedFields != null)
    {
        foreach (var item in result.ExtractedFields)
        {
            Console.WriteLine($"Field name: {item.FieldName} | Field value: {item.Value} | Validation state: ({item.ValidationState})");
        }
    }
}

static ProcessorComponent buildComponent()
{
    return new ProcessorComponent()
    {
        EnableClassifier = false, // Classification is not required, as you're using a single template.
        EnableFieldsExtraction = true, // Enabling extraction of fields specified from the templates defined in the "Templates" field below.
        Templates = new DocumentTemplate[] { buildInvoiceTemplate() }
    };
}

static DocumentTemplate buildInvoiceTemplate()
{
    // Template setup: getting an instance of the preconfigured invoice template.
    DocumentTemplate invoiceTemplate = DocumentTemplates.Invoice;

    // Adding a custom field to the invoice template instance
    // to get the order ID of a specific format.
    invoiceTemplate.AddField(new()
    {
        Name = "Order ID",
        Format = FieldDataFormat.Text,
        SemanticDescription = "The order ID in the invoice",
        RegexValidationMethods = new List<RegexFieldValidationMethod>
        {
            new RegexFieldValidationMethod("^[A-Z][0-9]{1,6}$")
        }
    });

    // Adding a custom field to the invoice template instance
    // to calculate the payment due date based on the information in the invoice.
    invoiceTemplate.AddField(new()
    {
        Name = "Payment due date",
        Format = FieldDataFormat.Text,
        SemanticDescription = "The date that the payment is due",
        StandardValidationMethods = new List<StandardFieldValidationMethod>()
        {
            new StandardFieldValidationMethod(StandardFieldValidation.DateIntegrity)
        }
    });

    // Adding a custom field to the template instance
    // to get the unique item count.
    invoiceTemplate.AddField(new()
    {
        Name = "Unique item count",
        Format = FieldDataFormat.Number,
        SemanticDescription = "The total number of unique items",
        StandardValidationMethods = new List<StandardFieldValidationMethod>()
        {
            new StandardFieldValidationMethod(StandardFieldValidation.NumberIntegrity)
        }
    });

    // Adding a custom field to the template instance
    // to get the sum total of all items.
    invoiceTemplate.AddField(new()
    {
        Name = "Total item count",
        Format = FieldDataFormat.Number,
        SemanticDescription = "The sum of all items, including multiplying the quantities of each item",
        StandardValidationMethods = new List<StandardFieldValidationMethod>()
        {
            new StandardFieldValidationMethod(StandardFieldValidation.NumberIntegrity)
        }
    });

    return invoiceTemplate;
}