Page 128 - JOURNAL OF LIBRARY SCIENCE IN CHINA 2018 Vol. 42

OU Shiyan, TANG Zhengui & SU Feifei / Construction and usage of terminology services for information retrieval 127

basic terminology services (see Table 1) considering the actual situation of Chinese Thesaurus.
These services can be combined further to form more complex terminology services.

Table 1. The basic terminology services built in this study
No. Terminology Service Function Input Output
searchConceptByKeyword Search the concepts that
1 Text string，e.g., “camera”
(String keyword) match the input keyword
getBroaderConcept(String Get the broader concepts of Text string，e.g.,“X-ray
2 The URL, preferred labels,
keyword) the input term diffraction camera”
getNarrowerConcept(String Get the narrower concepts of or alternative labels of the
3 Text string，e.g.,“camera” returned concept
keyword) the input term
getRelatedConcept(String Get the related concepts of Text string，e.g., “X-ray
4
keyword) the input term diffraction camera”
getSynonym(String key- Get the synonyms of the input Text string，e.g., “X-ray Synonyms in the same lang-
5
word) term goniometer” uage（text string）
getEnglishTranslation Get the Engligh translations Text string，e.g., “X-ray Corresponding English
6
(String keyword) of the input term goniometer” translations（text string）

Figure 2 shows the programming code of using Jersey to implement terminology services by
taking the “searchConceptByKeyword” service as an example. Firstly, a terminology service
resource class is defined with the method of Java Annotation, e.g., “TermServices”. Herein,
@Path defines the path of the terminology service resource class (i.e. root URI), e.g. <http://
host:port/rest/termservices>; @Produces annotates the MIME type responded by the terminology
service, e.g. “application/json”; @Consumes defines the MIME type of the request that can
be accepted by the terminology service, e.g. “text/plain”. In this resource class, different
terminology service methods are continually defined, e.g. “searchConceptByKeyword”. @Path
of this method is combined with the root path to form the path of the sub-resource, e.g. <http://
host:port/rest/termservices/searchConceptByKeyword>; @GET refers to the HTTP GET method
which can be responded by the method. Different terminology service methods use different
SPARQL queries to get corresponding information from the vocabulary through the port of the
Fuseki server.
While accessing the sever-side data in different domains using AJAX requests, the AJAX
①a
cross-domain issue arises. This issue is caused because of the homologous strategy in the security
restriction of the JavaScript language. To allow AJAX clients in different domains to call RESTful
Web services, the cross-domain issue should be solved. We realized the cross-domain call of
RESTful Web services by modifying the response code of the AJAX client on the server side.
Jersey provides the javax.ws.rs.core. Response class to modify different fields of the HTTP
Response HEADER. The ok method of the Response class creates a Response Builder instance
by modifying the HEADER parameters through the header method of the Response Build object.

①a AJAX stands for Asynchronous JavaScript and XML, which can update a web page without reloading the whole page.