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You can use this filter to remove a JSON node from a JSON message. You can specify the node to remove using a JSON Path expression. The JSON Path query language enables you to select nodes in a JSON document.
For more details on JSON Path, see http://code.google.com/p/jsonpath.
To configure this filter, specify the following fields:
Name:
Enter a suitable name that reflects the role of the filter.
JSON Path Expression:
Enter a JSON Path expression to specify the node to remove (for example,
$.store.bicycle). The Policy Studio prompts if you enter an
unsupported JSON Path expression.
![[Note]](../common_oracle/images/admon/note.png) |
Note |
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If the specified expression returns more than one node, all returned nodes are removed. |
Fail if no nodes returned from JSON Path:
When this option is selected, and the JSON Path expression returns no nodes, the filter returns false. If this option is not selected, and the JSON Path returns no nodes, the filter returns true, and no nodes are removed. This option is not selected by default.
Save deleted nodes to be reinserted to new location:
Select this option if you want to move JSON nodes from one location
in the message to another. The deleted nodes are stored in the
deleted.json.node.list message attribute. You can
then use the JSON Add Node filter to insert the deleted
nodes into a different location in the message. For more details, see
the topic on JSON Add Node.
The following are some examples of using the JSON Remove Node filter.
Removing a Node
The following example shows removing a bicycle from the store:
The following example shows the corresponding request and response message in Oracle API Gateway Explorer:
Removing all Items in an Array
The following example shows removing all books in an array:
The following example shows the corresponding request and response message in Oracle API Gateway Explorer:
