Hvordan håndterer man BLOB og CLOB i olingo v2?

Hvis du bruger MySQL, kræver det en ekstra ExceptionInterceptor sammen med Blob-implementeringen. Du kan have en tilpasset implementering af ExceptionInterceptor og brug den til at initialisere Blob-feltet.

Koden til at opnå det ville være som følger

import java.sql.Blob;
import java.sql.Clob;
import java.util.Properties;

import org.apache.olingo.odata2.jpa.processor.api.OnJPAWriteContent;
import org.apache.olingo.odata2.jpa.processor.api.exception.ODataJPARuntimeException;

import com.mysql.cj.exceptions.ExceptionInterceptor;
import com.mysql.cj.log.Log;

public class CustomOnJPAWriteContent implements OnJPAWriteContent {

    @Override
    public Blob getJPABlob(byte[] binaryData) throws ODataJPARuntimeException {
        return new com.mysql.cj.jdbc.Blob(binaryData, exceptionInterceptor);
    }

    @Override
    public Clob getJPAClob(char[] characterData) throws ODataJPARuntimeException {
        
        return new com.mysql.cj.jdbc.Clob(new String(characterData), exceptionInterceptor);

    }

    ExceptionInterceptor exceptionInterceptor = new ExceptionInterceptor() {

        @Override
        public Exception interceptException(Exception sqlEx) {
            // TODO Auto-generated method stub
            return null;
        }

        @Override
        public ExceptionInterceptor init(Properties props, Log log) {
            // TODO Auto-generated method stub
            return null;
        }

        @Override
        public void destroy() {
            // TODO Auto-generated method stub

        }
    };

}