| Since | 19.5 |
This node imports work item(s) from a .json file on disk or from another TOP node in the scene file, including any attribute data or output files listed on the source work item(s).
Parameters ¶
Source ¶
Generate When
Determines when this node will generate work items. You should generally leave this set to “Automatic” unless you know the node requires a specific generation mode, or that the work items need to be generated dynamically.
All Upstream Items are Generated
This node will generate work items once all of the input nodes have generated their work items.
All Upstream Items are Cooked
This node will generate work items once all of the input nodes have cooked their work items.
Each Upstream Item is Cooked
This node will generate work items each time a work item in an input node is cooked.
Automatic
The generation mode is selected based on the generation mode of the input nodes. If any of the input nodes are generating work items when their inputs cook, this node will be set to Each Upstream Item is Cooked. Otherwise, it will be set to All Upstream Items are Generated.
Work Item Source
Determines where work items are imported from.
TOP Node
Work items are imported from the TOP node specified by the TOP Path parameter. The TOP node is also cooked if necessary.
Upstream Output File(s)
Work items are imported from upstream output files that match the specified File Tag.
Upstream Work Item ID Attribute
Work items are imported using their unique ID from the integer attribute array specified by the Attribute Name parameter.
Custom File Path
Work items are imported from the .json file specified by the File Path parameter.
Upstream Dictionary Attribue
Work items are imported from an upstream Dictionary attribute, which can contain either a single work item or a work item array. If the dictionary attribute itself is an array, each dictionary is imported indepenently.
TOP Path
Specifies the path to the TOP node to import. The TOP node must be in a different TOP graph than this Work Item Import TOP node.
This parameter is only available when Work Item Source is set to TOP Node.
File Tag
Specifies which file tag to apply to the upstream output files.
This parameter is only available when Work Item Source is set to Upstream Output File(s).
ID Attribute
Specifies the name of the upstream integer array attribute that contains the work item IDs to import.
This parameter is only available when Work Item Source is set to Upstream Work Item ID Attribute.
Dictionary Attribute
Specifies the name of the upstream dictionary attribute that contains the serialized work items to import.
This parameter is only available when Work Item Source is set to Upstream Work Item Dictionary Attribute.
File Path
Specifies the path to the .json file to import.
This parameter is only available when Work Item Source is set to Custom File Path.
These parameters allow you to configure how the TOP node is cooked, and they are only available when Work Item Source is set to TOP Node.
Evaluation Time
Determines the time (in seconds) at which to cook the TOP.
Work Item Frame
The TOP is evaluated at the frame value specified on the upstream work item.
Custom Time
The TOP is evaluated at the Custom Time value.
Network Evaluation Time
The TOP is evaluated at the Houdini playbar time that was set when this TOP network began to cook.
Custom Time
Configures the time value at which the target TOP node is evaluated.
This parameter is only available when Evaluation Time is set to Custom Time.
Dirty Before Cook
Determines if or when the TOP node should be dirtied before it is cooked.
None
The TOP node is not dirtied.
Work Items
The work items on the TOP node are deleted, but their output files are not removed from disk.
Work Items and Output Files
The work items on the TOP node are deleted and their outputs are removed from disk.
Generate Only
The TOP node is generated instead of cooked. However, if the TOP node is dynamic, then its input nodes will still cook.
Evaluate with Work Item Attributes
The attributes of the upstream work items are applied to the scene before cooking the TOP node. This also means that the TOP node is invalidated and may need to recook for each input work item for this node.
These parameters allow you to configure how imported work items are processed.
On Attribute Collision
Determines what should happen if an imported work item has an attribute that already exist on an upstream input work item. By default, this node prefers to keep upstream attribute values, but you can change this parameter to Keep Imported Attribute instead to ensure that upstream attributes are overwritten by the values found on the imported work item.
Keep Upstream Attribute
When an upstream work item and an imported work item have an attribute with the same name, work items on this node will keep the upstream attribute data.
Keep Imported Attribute
When an upstream work item and an imported work item have an attribute with the same name, work items on this node will keep the imported attribute data.
Report Warning
When an upstream work item and an imported work item have an attribute with the same name, work items on this node will keep the upstream attribute data and a warning is issued.
Preserve Work Item DataType
When on, PDG will attempt to preserve the custom data type of the imported work items (if possible). Otherwise, the work items will be imported as generic work items.
Add Status AttributeS
When on, the imported work items will have itemname, itemid, and cookedsuccess attributes created on them to track the names, IDs, and statuses of the original work items.
Schedulers ¶
TOP Scheduler Override
This parameter overrides the TOP scheduler for this node.
Add Job Parms
Opens the Edit Parameter Interface window for the purpose of adding scheduler parameters to the node’s interface.
In-Process Scheduler
The Edit Parameter Interface window opens with the 
In-Process Scheduler’s parameter folder selected in the Create Parameters column.
Local Scheduler
The Edit Parameter Interface window opens with the Local Scheduler’s parameter folder selected in the Create Parameters column.
HQueue Scheduler
The Edit Parameter Interface window opens with the 
HQueue Scheduler’s parameter folder selected in the Create Parameters column.
Schedule When
When enabled, this parameter can be used to specify an expression that determines which work items from the node should be scheduled. If the expression returns zero for a given work item, that work item will immediately be marked as cooked instead of being queued with a scheduler. If the expression returns a non-zero value, the work item is scheduled normally.
Work Item Label
Determines how the node should label its work items. This parameter allows you to assign non-unique label strings to your work items which are then used to identify the work items in the attribute panel, task bar, and scheduler job names.
Use Default Label
The work items in this node will use the default label from the TOP network, or have no label if the default is unset.
Inherit From Upstream Item
The work items inherit their labels from their parent work items.
Custom Expression
The work item label is set to the Label Expression custom expression which is evaluated for each item.
Node Defines Label
The work item label is defined in the node’s internal logic.
Work Item Priority
This parameter determines how the current scheduler prioritizes the work items in this node.
Inherit From Upstream Item
The work items inherit their priority from their parent items. If a work item has no parent, its priority is set to 0.
Custom Expression
The work item priority is set to the value of Priority Expression.
Node Defines Priority
The work item priority is set based on the node’s own internal priority calculations.
This option is only available on the 
Python Processor TOP, 
ROP Fetch TOP, and ROP Output TOP nodes. These nodes define their own prioritization schemes that are implemented in their node logic.
| See also |
Geometry Import
JSON Input
JSON Output
TOP Fetch
