Walkthrough: Inserting Data from XML Documents to Multiple Tables

Artículo
12/11/2013

XMLports are used to export data from a Microsoft Dynamics NAV database to an XML document or import data from an XML document to a Microsoft Dynamics NAV database. The data can be exported from or imported to multiple tables in the database. Exporting data from a Microsoft Dynamics NAV database into XML format enables seamless exchange of information between different computer systems. You only need a basic knowledge of XML to design and work with XMLports.

XMLports can be called and run from codeunits or run from Object Designer. In this walkthrough, you will create a codeunit to call and run the XMLport. When you create a codeunit, you define the InStream object that will import the data and the location where the XML document should be saved.

About this Walkthrough

This walkthrough shows you how to import data from a Sales Order XML document to a Microsoft Dynamics NAV database. The Sales Order XML document contains data that belongs in two different tables in the database because the tables have a header-line relationship. The data is inserted into the appropriate tables. This walkthrough illustrates the following tasks:

Creating an XMLport.
Creating the codeunit to insert the XML data.
Running the XMLport.

Prerequisites

To complete this walkthrough, you will need:

Microsoft Dynamics NAV 2013 R2 installed with a developer license.
The CRONUS International Ltd. demonstration database.

Story

Simon is a Microsoft Certified Partner working for CRONUS International Ltd. A colleague in the Sales Department has shared Sales Order records with Simon. Simon has been asked to import the Sales Order records from an XML document into the appropriate tables in the database. When Simon examined the data in the XML document, he realized that the data in the Sales Order document belongs in two different tables, the Sale Header table and the Sales Line table. The tables have a header-lines relationship. Simon’s task is to insert the Sales Header records from the XML document into the Sales Header table and insert the Line records into the Sales Line table. Simon knows that he can create an XMLport to import the data into the database and he also knows that he can design the XMLport to insert the Header data into the Sales Header table and the Line data into data into the Sales Line table.

Setting Up the Sample Data

In this walkthrough, you import an XML document and insert it into the database. The document contains Sales Order information, which is made up of sales header and sales lines information. The customer named “The Cannon Group PLC” has new sales order information in the sales order document. The sales header information is in the <Header></Header> element and the sales line information is in the <Line></Line> elements. You create an XMLport that inserts the header data into the Sales Header table and the sales line data into the Sales Line table.

To create the XML document

On the c: drive on your computer, create a folder named Multiple.
Copy and paste the following XML document into a text file and save it as NewSalesOrder.xml in the folder that you just created. Later, you will create a codeunit that looks for this XML file in this folder.

<Root>
 <Header>
    <DocumentType>Order</DocumentType>
    <SellToCustomerNo>10000</SellToCustomerNo>
    <No>1015</No>
    <BillToName>The Cannon Group PLC</BillToName>
    <BillToAddress>192 Market Square</BillToAddress>
    <BillToCity>Birmingham</BillToCity>
    <BillToContact>Mr. Andy Teal</BillToContact>
    <BillToCountryRegion />
    <BillToPostCode>B27 4KT</BillToPostCode>
    <Line>
      <DocumentType>Order</DocumentType>
      <Type>Item</Type>
      <ItemNo>LS-2</ItemNo>
      <DocumentNo>1015</DocumentNo>
      <LineNo>20000</LineNo>
      <Description>Cables for Loudspeakers</Description>
      <UnitOfMeasure>BOX</UnitOfMeasure>
      <Quantity>100</Quantity>
      <UnitPrice>21.00</UnitPrice>
    </Line>
  </Header>
</Root>

Creating the XMLport

You create the XMLport by designing it in XMLport Designer and setting the properties for the XMLport. You define the nodes of the XML document and specify the tables and fields into which you want to insert the data.

To create the XMLport

In the Microsoft Dynamics NAV Development Environment, on the Tools menu, choose Object Designer.
In Object Designer, choose XMLport, and then choose New.
In XMLport Designer, choose an empty row in the designer, and on the View menu, choose Properties.
In the XMLport-Properties window, locate the Direction Property, choose the drop-down arrow in the Value column, and then set it to Import.
In the XMLport-Properties window, locate the Format Property (XMLports), verify that the Value column is set to Xml, and then close the XMLport-Properties window.
In XMLport Designer, in the first row, in the Node Name column, enter Root. In the Node Type column, verify that Element is selected. In the Source Type column, verify that Text is selected. This node represents the beginning of the XML document.
In the second row, in the Node Name column, enter Header. In the Node Type column, choose Element. In the Source Type column, choose the drop-down arrow, and then choose Table. This node represents a Sales Header record in the XML document.
In the second row, in the Data Source column, choose the up arrow, choose the SalesHeader table (36) from the Table List window, and then choose the OK button. The data will be imported into the Sales Header table.
Choose the Header row and use the right arrow to indent the row once to place it under the Root element.

The next step is to map the nodes in the XML document to fields in the Sales Header table.
In the next empty row under the Header row, in the Node Type column, choose Element, and in the Source Type column, choose Field.
In the Data Source column, choose the up arrow, choose the Document Type field from the Field Lookup window, and then choose the OK button.
In the Node Name column, enter a name for the field. For example, you can enter DocumentType. You can enter any name but because of consistency you might want to enter the name of field you choose.

Note

The name that you enter in the Node Name column cannot contain spaces. White space in the name results in a compile error.
Choose the DocumentType row and use the right arrow to indent the field once to make it a subset of the Header element.

Repeat steps 10 through 13 to map the fields you want to import. For this walkthrough choose the following fields.

Node Name	Node Type	Source Type	Data Source
DocumentType	Element	Field	Sales Header::Document Type
SellToCustomerNo	Element	Field	Sales Header::Sell-to Customer No.
No	Element	Field	Sales Header::No.
BillToName	Element	Field	Sales Header::Bill-to Name
BillToAddress	Element	Field	Sales Header::Bill-to Address
BillToCity	Element	Field	Sales Header::Bill-to City
BillToContact	Element	Field	Sales Header::Bill-to Contact
BillToCountryRegion	Element	Field	Sales Header::Bill-to Country/Region Code
BillToPostCode	Element	Field	Sales Header::Bill-to Post Code

You have mapped the nodes in the Header element in the XML document to the fields in the Sales Header table. Next, you map the Line node in the XML document to the Sales Line table.

In the next empty row, in the Node Name column, enter Line, and in the Node Type column, choose Element, and then in the Source Type column, choose the drop-down arrow and then choose Table. This node represents a Sales Line record in the XML document.
In the Data Source column, choose the up arrow, choose the Sales Line table (37) from the Table List window, and then choose the OK button.

The next step is to map the nodes that you want to import.
In the next empty row under the Line row, in the Node Type column, choose Element, and in the Source Type column, choose Field.
In the Data Source column, choose the up arrow, choose <Sales Line>(Sales Line) from the first column in the Field Lookup window, choose the Document Type field from the second column of the Field Lookup window, and then choose the OK button.
In the Node Name column, enter a name for the field. For example, you can enter DocumentType.
Choose the DocumentType row and use the right arrow to indent the field once to make it a subset of the Line element.

Repeat steps 17 through 20 to map the nodes that you want to import. For this walkthrough map the following fields.

Node Name	Node Type	Source Type	Data Source
DocumentType	Element	Field	Sales Line::Document Type
Type	Element	Field	Sales Line::Type
ItemNo	Element	Field	Sales Line::No.
DocumentNo	Element	Field	Sales Line::Document No.
LineNo	Element	Field	Sales Line::Line No.
Description	Element	Field	Sales Line::Description
UnitOfMeasure	Element	Field	Sales Line::Unit of Measure
Quantity	Element	Field	Sales Line::Quantity
UnitPrice	Element	Field	Sales Line::Unit Price

The design of the XMLport shows that the data in the XML document has been mapped to database tables that have a header-line relation. The XMLport must insert the header information before inserting the line information. You must set the properties to achieve this.

From XMLport Designer, choose the Line row, and from the View menu, choose Properties.
In the Line-Properties window, locate the LinkTableForceInsert Property and set its value to Yes.
Locate the LinkTable Property, in the Value column choose the up arrow to open the Table List window, and then choose Sales Header.
Locate the LinkFields Property and choose the AssistEdit button in the Value column to open the DataItem Link window.
In the DataItem Link window, in the Field column, choose the up arrow to open the Sales Line – Field List window, choose Document No., and then choose the OK button.
In the DataItem Link window, in the Reference Field column, choose the up arrow to open the Sales Header – Field List window, choose No., and then choose the OK button. Choose the OK button to close the DataItem Link window.
From the File menu, choose Save As.
In the Save As window, enter 50002 in the ID text box and enter MultipleTables in the Name text box. Verify that Compile is selected, and then choose the OK button.

Note

You use the name of the XMLport later in the codeunit.
Close XMLport Designer.

Creating the Codeunit to Insert the XML Data

After you have created the XMLport, you create the codeunit that imports the data.

To create the codeunit

In Object Designer, choose Codeunit, and then choose New to open the C/AL Editor.
On the View menu, choose C/AL Globals.
On the Variables tab, in the Name column, enter SalesOrderXmlFile and in the DataType column, choose the drop-down arrow, and then choose Text. This variable represents the XML file that you will import.
In the second row, in the Name column, enter XmlStream and in the DataType column, choose the drop-down arrow, and then choose InStream. This variable represents the data stream from the XML document to the table.
In the third row, in the Name column, enter IsImported and in the DataType column, choose the drop-down arrow, and then choose Boolean. This variable indicates whether the import succeeded. Close the C/AL Globals window.
In the C/AL Editor, in the OnRun trigger, add the following code.
```
SalesOrderXmlFile := 'C:\Multiple\NewSalesOrder.xml';
UPLOADINTOSTREAM('Import','',' Xml Files (*.xml)|*.xml',SalesOrderXmlFile,XmlStream);
IsImported := XMLPORT.IMPORT(XMLPORT::MultipleTables, XmlStream);
IF (IsImported = TRUE) THEN
  MESSAGE('The import from XML is complete.')
ELSE
  MESSAGE(GETLASTERRORTEXT);
```
The code uses the UPLOADINTOSTREAM Function (File) to send a file from the client to the server. The file is an XML file named NewSalesOrder.xml, which is located in a folder named Multiple on the C: drive. The IMPORT Function (XMLport) imports the data by using the specified XMLport. A message is displayed at the end of the export to indicate that the import is complete. If the import fails, then an error message is displayed. This message is not required but it lets the user know that something actually happened.
Close the C/AL Editor and choose Yes at the prompt. In the Save AS dialog box, in the ID text box, enter 50003, in the name text box enter ImportMultiple, make sure Compile is selected, and then choose the OK button.

Running the XMLport

After the XMLport is created and the codeunit is written, run the codeunit to import the data.

To Run the XMLport

In Object Designer, choose the ImportMultiple codeunit (50003), which is the codeunit that you just created, and then choose Run. The client opens and a message indicating that the export is complete is displayed.
After the export is complete, in Object Designer, choose Table, select the Sales Header table, and then choose the Run button. Verify that the new record is included in the table.
Similarly, run the Sales Line table and verify that the new record is included in the table.

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