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For cadsr-II the URL has been updated slightly from the legacy caDSR but returns the data in the same format as legacy caDSR.
To invoke this interface for the cadsr-caDSR II API interface, use a URL in the form outlined below. The items in bold are required and the items in angle brackets < .. > should be replaced with specific information based on the parameters desired.
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https://cadsrapi.cancer.gov/invoke/caDSR/<Target Format>?query=<Target>[<Criteria>[ |
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@<ID>=<ID_VALUE>, …]] |
For example:
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In the above example, the Target Format is GetXML, the Target is DataElement, and the Implicit Criteria are @publicId=62,@version=6. In the Implicit Criteria, one ID is publicId and the corresponding Value is 62, while the other ID is version and the corresponding Value is 6.
The following table provides more details:
Parameter | Description |
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<Target Format> | Result format ( |
GetXML, |
GetJSON, |
or GetHTML). |
Use the prefix |
Get followed by the format (one of XML, JSON, or HTML) concatenated as one word |
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<Target> | Result class name. Use a valid caDSR Class name |
, such as DataElement or Form. For a full list, refer to the caDSR II Domain Class Browser: https://cadsrapi.cancer.gov/caDSR/domain/browser.dsp For example, use … query=Form[ … ] |
to return caDSR Form class information. | |
<Criteria> | The criteria class that identifies the association to be traversed when retrieving the target/result class. |
The Criteria |
constrain the target/result based on the associated |
ID and ID_VALUE pair or pairs |
that you provide in the |
square brackets [ … ]. |
You can nest Criteria in the square brackets [ … ]. If the Criteria |
is the Target, then |
you can use a shorthand and the system assumes the Criteria to be equal to the Target. ( |
This is considered Implicit Criteria.) |
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<ID> | Attribute of the Criteria class used to constrain the query. |
For more than one attribute, use a comma between each attribute. |
The query |
performs the |
AND operation for |
all ID and ID_VALUE pair parameters you have provided for the Criteria |
class you have identified. |
For example, use [@publicId= …] combined with the ID_VALUE |
to identify the constraints for the result returned. | |
<ID_VALUE> | A string identifying the qualified criteria class data to be used as a filter on the result set |
e.g. [@publicId=62,@version=6]
A complete example.
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For example, use |
[@publicId=62,@version=6] |
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Target Format Target Criteria ID Value ID Value
Comparing the format of the legacy caDSR to the cadsr-II format:
OLD (legacy caDSR):
https://cadsrapi.nci.nih.gov/cadsrapi4/GetXML?query=DataElement[@publicId=62][@version=6]
NEW (cadsr-II):
...
to identify a qualified criterion for the class specified in <Target>. |
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