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Used as a prefix to reference the context parameter values that have been configured within a Stream Action using the notation _context.<ContextParameter Name>. Please see Stream Action Form for more details on how to use it.
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_count provides the number of Stream Items in the current Candidate Set. _count is used on CalculateBySet and Aggregate Streams.
If you want to know how many items have been returned by a Lookup Pipe or the number of items returned by a specific Pipe for the current Candidate Set then use the countElements() function.
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_current is only available when a Stream is configured to carry out Calculate by Set processing.
_current refers to the current input Stream Item being processed within the Candidate Set.
Note: If you attempt to refer to the Stream Item using the name of the Pipe e.g. in.accountNum that Expression would return an Array of all the values of accountNum in the current Candidate Set for Pipe in. Instead of using in.accountNum you should use _current.accountNum to return the current input.
_current is most often used in Stream Attribute Expressions but is also used in objects connected to Streams e.g. Pipes, Database Collectors and File Collectors.
You can also use _current in expressions for the CSS Properties of grid rows.
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Used as a prefix to reference the values that are being dragged within a Stream Action using the notation _dragSource.<AttributeName>.
See Also Drag Types and Drop Targets and Stream Action Form.
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A record on a stream view that is configured with a Drag Type can be dragged onto a component that is:
- backed by a stream
- configured with a Drop Target action.
For more information, see Drag Types and Drop Targets.
Use this variable for the drop target action to provide co-ordinate values:
- _dropPosition.left - the number of pixels from the left hand edge of the dropTarget
- _dropPosition.top - gives the number of pixels from the top of the drop target.
When _dropPosition is used for a:
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_errors contains the number of error messages generated during the running of a Task Plan.
This variable can be used in the Task Plan user notification rules to specify for example that an email should only be sent if there are more than a certain number of error messages.
This variable can also be used in the subject line and email body expressions.
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_field contains properties of a single field or attribute, and is set in contexts where stream actions, fields or attributes are processed one at a time. For example, use _field in:
- stream attribute expressions
- stream view attribute label expressions
- formatting rule expressions.
In stream actions that are double-click or in-cell actions, use _field to access the name and label of a column or to refer to the value in the cell.
Use _field to access the name and value of an input field for components that are:
- either input fields
- or field containers that have an input field.
Value | Description |
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name | The name of the field. This field is set in all contexts in which _field is defined. |
value | The value of the field. This field is not set in all contexts. See individual form help pages for details. |
labels | The list of header labels associated with the field. This field is not set in all contexts. See individual form help pages for details. |
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_fieldName can be used within Stream Attribute Expressions. It represents currently processed stream attribute.
_fieldName contains the name of the field (stream attribute name) whose expression is currently being evaluated. This can be helpful for debug messages or user generated error messages.
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_file contains the details of one or more files that have been processed.
The file details are:
Value | Description |
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name | The name of the file, excluding the directory. |
directory | The directory containing the file. |
type | The type of the file; one of 'INPUT' (Imported), 'OUTPUT' (Exported). |
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_fileCount contains the number of files processed during the running of a Task Plan.
This variable can be used in the Stream Action result message.
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_fileName can be used within Stream Attribute Expressions in cases where the Stream has data coming from a File Collector.
_fileName contains the name of the file that provided the current input Stream Item.
_fileName must be prefixed with the name of the Pipe linking the File Collector to the Stream e.g. in._fileName.
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_filePathList is set to a list of the files that were received as attachments to the same email as that of the attachment currently being processed.
The full path of each file is shown. Individual file paths are separated by semi-colons (;).
This variable is only populated when reading from a File Collector with the Source Type set to Managed File
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Contains a list of names of files that have been uploaded by the Stream Action.
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