QPR Knowledge Base 2019.1

Revision history:

Introduced in QPR 8.0

 

Returns binary data from an object defined in the function call. This function can be used to fetch graphs and embedded data from objects.

 

Synopsis:

 

BinaryData GetBinaryData(string sessionId, string objectId, string attribute, string options)

 

Return Value:

 

A BinaryData object. The BinaryData object has the following member variables:

•Content (Byte[]). Actual binary content

•FileName (String). This is either the original filename of an uploaded file or an automatically generated version.

•MimeType (String). MIME type of the binary content.

 

Parameters:

 

sessionId: String. ID of an authenticated session.

objectId: String. ID of an object from which binary data is fetched.

attribute: String. Supported binary data attributes:

•PG

ograph. Querying this attribute equals to calling GetGraph with the attribute's parameters as the value of the Options parameter. See GetGraph for a list of supported parameters.

oembeddeddata. Returns the data embedded in an information item. Note: To check whether an information item is embedded, query the infoitem.embedtype attribute.

•SC

ograph. Querying this attribute equals to calling GetGraph with the attribute's parameters as the value of the Options parameter. See GetGraph for a list of supported parameters.

•Portal

oembeddeddata. Returns the data embedded in an embedded attachment. Note that you can use for instance [PO].EmbeddedAttachment to get a list of all embedded attachments in the database.

options: String. List of comma-separated parameters. Language parameters are available similarly as in the QueryObjects function.

 

 

Example Procedure:

 

ServiceClient client = new ServiceClient("WSHttpBinding_IService");

string sessionId = client.Authenticate("qpr", "demo");

BinaryData embeddedInfoItem = client.GetBinaryData(sessionId, "PG.67890.5343", "embeddeddata", "");

string fileName = embeddedInfoItem.FileName;

FileStream fs = new FileStream(fileName, FileMode.Create);

fs.Write(embeddededInfoItem.Content, 0, embeddedInfoItem.Content.Length);

fs.Close();

MessageBox.Show("Downloaded embedded data to file: " + fileName + "\r\nMime type: " + embeddedInfoItem.MimeType);

client.Close();