Exporting to XML
The XML rendering extension returns a report in XML format. The schema for the report XML is specific to the report, and contains data only. Layout information is not rendered and pagination is not maintained by the XML rendering extension. The XML generated by this extension can be imported into a database, used as an XML data message, or sent to a custom application.
The following table describes how report items are rendered.
Item |
Rendering behavior |
|---|---|
Report |
Renders as the top-level element of the XML document. |
Data regions |
Renders as an element within the element for its container. |
Group and detail sections |
Each instance renders as an element within the element for its container. |
Text box |
Renders as an attribute or element within its container. |
Rectangle |
Renders as an element within its container. |
Matrix column groups |
Renders as elements within row groups. |
Reports that are rendered using the XML rendering extension also follow these rules:
XML elements and attributes are rendered in the order that they appear in the report definition.
Pagination is ignored.
Page headers and footers are not rendered.
Hidden items that cannot be made visible by toggling are not rendered. Initially visible items and hidden items that can be made visible through a toggle are rendered.
Images, lines, and custom report items are ignored.
Data Types
The text box element or attribute is assigned an XSD data type based on the values that the text box displays.
If all text box values are |
Assigned data type is |
|---|---|
Int16, Int32, Int64, UInt16, UInt32, UInt64, Byte, SByte |
xsd:integer |
Decimal (or Decimal and any integer or byte data type) |
xsd:decimal |
Float (or Decimal and any integer or byte data type) |
xsd:float |
Double (or Decimal and any integer or byte data type) |
xsd:double |
DateTime or DateTime Offset |
xsd:dateTime |
Time |
xsd:string |
Boolean |
xsd:boolean |
String, Char |
xsd:string |
Other |
xsd:string |
XML -Specific Rendering Rules
The following sections describe how the XML rendering extensions interprets the items within the report.
Report Body
A report is rendered as the root element of the XML document. The name of the element comes from the DataElementName property set in the Properties pane.
XML namespace definitions and schema reference attributes are also included in the report element. Variables are noted in bold face type:
<Report xmlns=”SchemaName” xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance” xsi:schemaLocation=”SchemaNameReportURL&rc%3aSchema=true” Name=”ReportName”>
The values for the variables are as follows:
Name |
Value |
|---|---|
Report |
Report.DataElementName |
ReportURL |
URLEncoded absolute URL to the report on the server. |
SchemaName |
Report.SchemaName. If null, then Report.Name. If Report.Name is used, it is first encoded with XmlConvert.EncodeLocalName. |
ReportName |
The name of the report. |
Text boxes
Text boxes are rendered as elements or attributes according to the DataElementStyle RDL property. The name of the element or attribute comes from the TextBox.DataElementName RDL property.
Charts
Charts are rendered in XML. Chart data is structured.
Subreports
A subreport is rendered as an element. The name of the element is taken from the DataElementName RDL property. The TextBoxesAsElements property setting of the report overrides that of the subreport. Namespace and XSLT attributes are not added to the subreport element.
Rectangles
A rectangle is rendered as an element. The name of the element is taken from the DataElementName RDL property.
Custom Report Items
CustomReportItems (CRI) are not visible to the rendering extension. If a custom report item exists in the report, the rendering extension renders it as a conventional report item.
Images
Images are not rendered.
Lines
Lines are not rendered.
Tables, Matrices, and Lists
Tables, matrices, and lists, are rendered as an element. The name of the element comes from the Tablix DataElementName RDL property.
Rows and Columns
Columns are rendered within rows.
Tablix Corner
The corner is not rendered. Only the contents of the corner are rendered.
Tablix Cells
Tablix cells are rendered as elements. The name of the element is taken from the cell’s DataElementName RDL property.
Automatic Subtotals
Tablix automatic subtotals are not rendered.
Row and Column Items that Do Not Repeat with a Group
Items that do not repeat with a group, such as labels, subtotals and totals, are rendered as elements. The name of the element comes from the TablixMember.DataElementName RDL property.
The TablixMember.DataElementOutput RDL property controls whether a non-repeating item is rendered.
If the DataElementName property of the Tablix member is not provided, a name for the non-repeating item is dynamically generated in this form:
RowX – For non-repeating rows, where X is a zero-based row index within the current parent.
ColumnY – For non-repeating columns, where Y ix a zero-based column index within the current parent.
A non-repeating header is rendered as a child of the row or column that does not repeat with a group.
If a non-repeating member has no corresponding Tablix cells, it is not rendered. This may occur in the case of a Tablix cell where it spans more than one column.
Rows and Columns that Repeat with a Group
Rows and columns that repeat within a group are rendered according to Tablix.DataElementOutput rules. The name for the element is taken from the DataElementName property.
Each unique value within a group is rendered as a child element of the group. The name for the element is taken from the Group.DataElementName property.
If the DataElementOutput property value equals Output, a repeating item's header is rendered as a child of the detail element.
Custom Formats and XSL Transformations
XML files produced by the XML rendering extension can be transformed into almost any format using XSL Transformations (XSLT). This functionality can be used to produce data in formats not already supported by existing rendering extensions. Consider using the XML rendering extension and XSLT before attempting to create your own rendering extension.
Duplicate Names
If there are duplicate data element names within the same scope, the renderer displays an error message.
XSLT Transformations
The XML renderer can apply a server-side XSLT transformation to the original XML data. When an XSLT is applied, the renderer outputs the transformed content instead of the original XML data. The transformation occurs on the server, not on the client.
The XSLT to apply to the output is defined either in the report definition file with the DataTransform property of the report or with the XSLT DeviceInfo parameter. If either of these values are set, the transform occurs each time the XML renderer is used. When using subscriptions, the XSLT must be defined in the RDL DataTransform property.
If an XSLT file is specified, by both the DataTransform definition property and the device information setting, the XSLT specified in DataTransform occurs first, followed by the XSLT set by the device information settings.
Device Information Settings
You can change some default settings for this renderer by changing the device information settings, including the following:
A transformation (XSLT) to apply to the XML.
The MIME type of the XML document.
Whether to apply format strings to data.
Whether to indent the XML output.
Whether to include the XML schema name.
The encoding for the XML document.
The file extension of the XML document.
For more information, see Reporting Services Device Information Settings.