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Find Data Element by Public ID and VersionThe following examples find a data element where Public ID = 62 and Version=6, displaying the basic metadata attributes. Results Displayed in XMLThe URL for the results from the caDSR II REST API is
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* [GForge project|http://gforge.nci.nih.gov/projects/cadsrdb/]
* [GForge downloads|http://gforge.nci.nih.gov/frs/?group_id=60]
* [caDSR REST (XML-HTTP) API FAQs|caDSR REST (XML-HTTP) API FAQs]
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h2. Overview
Using the API, developers can allow an application to connect to caDSR and search the database. The API is available on the [download center|http://ncicb.nci.nih.gov/download/downloadcadsrapi.jsp].
The caDSR REST (XML-HTTP) API and CDE Browser provide access to, and a means of linking to, caDSR metadata through a standard internet browser.
caDSR REST results can be displayed *HTML in either or XML format* \- XML and can be displayed in an internet browser or by means of an XSLT stylesheet. The [caDSR 4.0 Technical Guide|https://wiki.nci.nih.gov/x/8JCl] describes the caDSR REST (XML-HTTP) API and provides a catalog of the caDSR operations and search criteria. To switch formats simply change the URL in the address line from "getHTML" to "getXML.
A few examples in both XML and HTML of caDSR operations are provided below. The attached MS Word documents for the examples show sample results and the "http" statements used to produce the results, and provide information about how to interpret the results. See also the [REST API FAQs|https://wiki.nci.nih.gov/x/uJJ9AQ].
h2. Examples
h3. Example 1 - Find Data Element by Public ID and Version
*Find a Data Element where Public Id = 2178693 and Version=2.1 and display the basic metadata attributes*.
Either the CDE Browser or the caDSR REST API can be used to satisfy this query and results from both are shown below.
*Example 1 Results Displayed in the CDE Browser*
This method can be used to retrieve Data Elements only when you know both the Public ID and Version number. (If you have trouble with the following link in Firefox, cut and paste it into IE.)
{code}
https://cdebrowser.nci.nih.gov/CDEBrowser/search?dataElementDetails=9/&cdeId=2178693&version=2.1&PageId=DataElementsGroup&queryDE=yes&FirstTimer=yes
{code}
Or alternatively
{code}
http://freestyle.nci.nih.gov/freestyle/do/cdebrowser?publicId=2178693&version=2.1
{code}
[Sample CDE Browser Output from Example 1|caDSR API with REST Examples^caDSR_API_ExampleOneCDEBrowser.doc]
*Example 1 Results Displayed in XML*
The URL for the results from the caDSR 4.0 REST API is:
{code}
http://cadsrapi.nci.nih.gov/cadsrapi40
Results Displayed in HTMLThe URL for the results from the caDSR II REST API is
Results Displayed in JSONThe URL for the results from the caDSR II REST API is
Allow Machine-to-machine Retrieval of a Data Element by Public ID and VersionThe following caDSR II example allows machine-to-machine retrieval of a data element by public ID and version. (You can test this URL only in a machine-to-machine scenario, not in a browser.)
If you want to create a REST API call from machine to machine or application to application, start your URL as follows:
Find Data Element by Public IDThe following example finds a data element with Public ID = 62, displaying the basic metadata attributes. Since the version is not known, this query can only be handled via a caDSR REST API query getting all versions. The URL for the results from the caDSR II REST API is
Or the query can retrieve only the latest version.
Find Data Element by Public ID, Display All Related ComponentsThe following example finds a data element with Public ID = 62, displaying all the metadata associated with the data element's related components, not just the basic attributes. This is handled in the caDSR REST API using a parameter that produces expanded ("heavy") XML. The URL for the results from the caDSR II REST API is
Find DEC Using Public ID, Display All Associated Data ElementsThe following example finds all the data elements associated with the DEC with Public ID = 2178546, displaying the basic metadata of the DEC and its data elements. The URL for the results from the caDSR II REST API is
Find Data Elements Associated with a Particular DEC Public ID and VersionThe following example finds only data elements associated with Version 2.1 of DEC with Public ID = 2178546. The URL for the results from the caDSR II REST API is
Get Data Elements Using Concept Code or Concept NameThe following examples show how to retrieve data elements using either the concept code or the concept name where the concept is the Primary concept of the related caDSR item. In these examples, results are returned in XML. Find All Data Elements Where Associated Concept is Primary Concept of Data Element's Object ClassThis example shows the use of the Concept Code (C19448). Results are returned in XML. The URL for the results from the caDSR II REST API is
Find All Data Elements Where Associated Concept is Primary Concept of Data Element's PropertyThe URL for the results from the caDSR II REST API is
Find All Data Elements Where Associated Concept is Primary Concept of One of Data Element's Value Domain Value MeaningsThe URL for the results from the caDSR II REST API is
Find All Enumerated Permissible Values for a Data ElementThe following examples find all enumerated permissible values for a data element using the data element's public ID and version or the data element's public ID (and getting latest version). You must specify either version or latestVersionIndicator. If you specify latestVersionIndicator=No, the query returns all permissible values across all versions of the CDE. The URL for the results from the caDSR II REST API is
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