This project connects to the institutional repository of the University of Bielefeld. This repository is accessed via the [OAI-PMH protocol][!https://www.openarchives.org/OAI/openarchivesprotocol.html] and contains the whole set of bibliographic records of the University of Bielefeld.

This projects contains the functionalities for doing the following analytics operation on this repository:

• Number of Records per Author
• Number of Records per Author with ORCID
• Number of Records per Publication Year
• Number of Records per Typology

The Rest Controller depends on the XML parser library that implements classes for downloading and parsing the OAI-PMH data. To build and install this library, run the following commands from terminal starting from the root directory of the project

    cd OAIPMHXmlParser
    mvn package
    mvn install

The backend can be communicated with using the given rest interface. To start the backend server, run the following commands from terminal starting from the root directory of the project

    cd restBackend
    ./mvnw spring-boot:run

At startup, the backend will download the data and compute the wanted statistics. If the backend is keept running, this operation will be redone every 24 hours.

Note: At startup, there is a time to wait before having the actual statistics computed. In the backend's log, it will be shown when the data is available by logging how many records where analyzed.

The rest backend offers the following APIs

• Greetings: http://localhost:8080/greetings

• Number of Records per Author: http://localhost:8080/numberOfRecordsPerAuthor
• Number of Records per ORCID Author: http://localhost:8080/numberOfRecordsPerOrcidAuthor
• NUmber of Records per Publication Year http://localhost:8080/numberOfRecordsPerPublicationYear
• Number of Records per Typology: http://localhost:8080/numberOfRecordsPerTypology
• Number of Records of Type Journal since startYear divided in range of yearRange years: http://localhost:8080/numberOfJournalRecordsSinceYearGrouperByYear?startYear=1985&yearRange=5

Furthermore, to see directly the background H2 DB, there is a specific rest API at the following location

http://localhost:8080/h2

This has to be accessed by using the userID and Password specified in the application.properties file of the rest backend project.

The console client is configure to work with the rest backend and to dump the obtained data into csv files. Data dumpers and data getters are actually extendible and decoupled so that it is easy to add another implementation like for example dumping on FrontEnd or getting data via DB.

The client has to be compiled using maven, and can be run by launching the produced jar.

The XML parsing is done by automatically generating the necessary classes via xjc, using the [OAIPMH's xsd file][!https://www.openarchives.org/OAI/openarchivesprotocol.html#OAIPMHschema]. To Automatically regenerate the classes, for example in the case of an update of the xsd, a simple script using linux bash language is present in the OAI-PMHSchema folder. The xjc program has to be present in the path to use this script. For example on Ubuntu it can be installed by using the following command

sudo apt-get install jaxb