Introduction

The Asserted Value Set services are integrated parts of the LexEVS API. It provide several functions:

Getting Source Asserted Value Sets as CodingScheme or Coding Scheme reference objects

Getting the entities of Source Asserted Value Sets as ResolvedConceptReference objects as Lists or Iterators

Getting a list of all unique identifiers of value set top nodes from this source terminology

Getting a list of all schemes used to resolve a given set of values from a resolved value set coding scheme

Most coding scheme representations and entity reference sets are resolved by the unique URL of the coding scheme.  Some allow a definition of a concept or text match.  All methods offer a resolution service to some set of values.  These mechanisms are largely read functions requiring a listing of known values or an exact match of a unique identifier.  Only one offers what could be classified as a search. 

 

SourceAssertedValueSetService Class Diagram

 

LexEVS Asserted Value Set Definition Services API

LexEVS Value Set Definition Services provides three major functions:

Each of these functions are described in following sections.

 

List Functions

List All Value Sets As Fully Populated Coding Schemes

listAllSourceAssertedValueSets()

Description:

Lists all coding schemes each with its own entity set fully resolved

Input:

none

Output:

List<CodingScheme>

Exception:

LBException

Implementation Details:

Implementation:
Call this method on the associated LexEVS Asserted Value Set service instance to list a full set of coding schemes along with all of their entities
Sample Call:

  • Step 1:Instantiate SourceAssertedValueSetService if it is not done yet:

    org.lexgrid.valuesets.SourceAssertedValueSetServiceImpl  assVSServ = new SourceAssertedValueSetServiceImpl(new AssertedValueSetParameters.Builder().build());

  • Step 2: List all the coding scheme representations of the value sets

    List<CodingScheme> schemes = assVSService.listAllSourceAssertedValueSets();

     

     

 

List all Coding Schemes without entities

getMinimalSourceAssertedValueSetSchemes()

Description:

Lists all coding schemes – no entities resolved

Input:

none

Output:

List<CodingScheme>

Exception:

LBException

Implementation Details:

Implementation:
Call this method on the associated LexEVS Asserted Value Set service instance to list a full set of coding schemes minus their entities
Sample Call:

  • Step 1:Instantiate SourceAssertedValueSetService if it is not done yet:

    org.lexgrid.valuesets.SourceAssertedValueSetServiceImpl  assVSServ = new SourceAssertedValueSetServiceImpl(new AssertedValueSetParameters.Builder().build());

  • Step 2: List all the coding scheme representations of the value sets

    List<CodingScheme> schemes = assVSService.getMinimalSourceAssertedValueSetSchemes();

     

     

Coding Scheme Read Functions

Get Value Sets by Concept Reference

getSourceAssertedValueSetsForConceptReference(ConceptReference ref)

Description:

Lists all coding schemes containing a particular concept reference

Input:

ConceptReference ref - Configurable to contain both the unique identifier and the namespace of the target coding scheme (both are tied to the asserting source in this case)

Output:

List<CodingScheme>

Exception:

none

Implementation Details:

Implementation:
Call this method on the associated LexEVS Asserted Value Set service instance to get a coding scheme representation of a vale set containing this concept reference
Sample Call:

  • Step 1:Instantiate SourceAssertedValueSetService if it is not done yet:

    org.lexgrid.valuesets.SourceAssertedValueSetServiceImpl  assVSServ = new SourceAssertedValueSetServiceImpl(new AssertedValueSetParameters.Builder().build());

  • Step 2: Construct the ConceptReference object:

    ConceptReference ref = new ConceptReference();
ref.setConceptCode("C1234");
ref.setCodeNamespace("ncit");

  • Step 3: List all the coding scheme representations of the value sets

    List<CodingScheme> schemes = assVSServ.getSourceAssertedValueSetsForConceptReference(ref);

 

Get Value Sets For Entity Code

getSourceAssertedValueSetForValueSetURI

Description:

Lists all coding schemes that have a top node defined by a unique entity code

Input:

String matchCode: unique identifier of the top node entity

Output:

List<CodingScheme>:  Might be more than one value set defined by this top node.

Exception:

LBException

Implementation Details:

Implementation:
Call this method on the associated LexEVS Asserted Value Set service instance to get one or more coding scheme representations of value sets that have a top node defined by this identifier
Sample Call:

  • Step 1:Instantiate SourceAssertedValueSetService if it is not done yet:

    org.lexgrid.valuesets.SourceAssertedValueSetServiceImpl  assVSServ = new SourceAssertedValueSetServiceImpl(new AssertedValueSetParameters.Builder().build());

  • Step 2: List all the coding schemes defined by the top node designated by the unique identifier

    List<CodingScheme> schemes = assVSServ.getSourceAssertedValueSetforTopNodeEntityCode("C12434");

     

     

 

Get a single value set for its unique URL

getSourceAssertedValueSetForValueSetURI

Description:

Gets a coding scheme representation of a value set based on its unique URI designation

Input:

URI uri: unique identifier of the top node entity wrapped in a URI object

Output:

CodingScheme:  Might be more than one value set defined by this top node.

Exception:

LBException

Implementation Details:

Implementation:
Call this method on the associated LexEVS Asserted Value Set service instance to get a single coding scheme representation of a value set using it's unique identifier wrapped in a URI object.
Sample Call:

  • Step 1:Instantiate SourceAssertedValueSetService if it is not done yet:

    org.lexgrid.valuesets.SourceAssertedValueSetServiceImpl  assVSServ = new SourceAssertedValueSetServiceImpl(new AssertedValueSetParameters.Builder().build());

  • Step 2: Instantiate a URI object using a string representation of the URI designation

    URI uri = new URI("http://evs.nci.nih.gov/valueset/CDISC/C12434");

  • Step 2: List all the coding schemes defined by the top node designated by the unique identifier

    CodingScheme scheme = assVSServ.getSourceAssertedValueSetForValueSetURI(uri);

     

     

 

Get Coding Scheme References for Any Source Schemes Used to Resolve a Coding Scheme Representation of a Value Set

getListOfCodingSchemeVersionsUsedInResolution

Description:

Gets minimal representations of coding schemes based on what was used to resolve a value set

Input:

CodingScheme cs: CodingScheme object with full metadata populated, entity representation not necessary

Output:

AbsoluteCodingSchemeVersionReferenceList:  Might be more than one coding scheme that defines this value set

Exception:

none

Implementation Details:

Implementation:
Call this method on the associated LexEVS Asserted Value Set service instance to determine what coding schemes define the value set. 
Sample Call:

  • Step 1:Instantiate SourceAssertedValueSetService if it is not done yet:

    org.lexgrid.valuesets.SourceAssertedValueSetServiceImpl  assVSServ = new SourceAssertedValueSetServiceImpl(new AssertedValueSetParameters.Builder().build());

  • Step 2: Get a coding scheme using one of the Asserted Value Set Service methods: 

    CodingScheme cs = assVSServ.getSourceAssertedValueSetForValueSetURI(new URI("http://evs.nci.nih.gov/valueset/CDISC/C12434")) ;

  • Step  3: List all the coding schemes defined by the top node designated by the unique identifier

    AbsoluteCodingSchemeVersionReferenceList list = assVSServ.getListOfCodingSchemeVersionsUsedInResolution(cs);

     

     

Resolved Concept Reference Read Functions

Get Resolved Concept References for the Coding Scheme Unique Identifier

 

Description:

Gets Resolved Concept Reference representations of entity values in a value set based on the unique identifier of the coding scheme representation

Input:

String uri: String representation of the coding scheme unique identifier

Output:

ResolvedConceptReferenceList :  Entities

Exception:

none

Implementation Details:

Implementation:
Call this method on the associated LexEVS Asserted Value Set service instance to determine what coding schemes define the value set. 
Sample Call:

  • Step 1:Instantiate SourceAssertedValueSetService if it is not done yet:

    org.lexgrid.valuesets.SourceAssertedValueSetServiceImpl  assVSServ = new SourceAssertedValueSetServiceImpl(new AssertedValueSetParameters.Builder().build());

  • Step 2: Get a coding scheme using one of the Asserted Value Set Service methods: 

    CodingScheme cs = assVSServ.getSourceAssertedValueSetForValueSetURI(new URI("http://evs.nci.nih.gov/valueset/CDISC/C12434")) ;

  • Step  3: List all the coding schemes defined by the top node designated by the unique identifier

    AbsoluteCodingSchemeVersionReferenceList list = assVSServ.getListOfCodingSchemeVersionsUsedInResolution(cs);

     

     

Search Function