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Revision 9026

Added by Jing Tao over 9 years ago

Add the code to get the most recent version of a sid which all pids are obsoleted.

View differences:

src/edu/ucsb/nceas/metacat/IdentifierManager.java
927 927 
     * Get the pid of the head (current) version of objects match the specified sid.
928 928 
     * DataONE defines the latest version as "current" if the object in question has
929 929 
     * a matching SID and no value in the "obsoletedBy" field, regardless if it is "archived" or not.
930 
     * If we can't find any pid associated with the sid doesn't have a value in obsoletedBy field,
931 
     * the pid associated with the sid  which has the max date_uploaded will be returned
930 932 
     * @param sid specified sid which should match.
931 933 
     * @return the pid of the head version. The null will be returned if there is no pid found.
932 934 
     * @throws SQLException
......
951 953 
                    pid = new Identifier();
952 954 
                    pid.setValue(rs.getString(1));
953 955
954 
                }
956 
                } else {
957 
                    //we don't find any pid associated with the sid doesn't have value in obsoletedBy field.
958 
                    //The pid associated with the sid  which has the max date_uploaded will be returned.
959 
                    sql = "select guid from systemMetadata where series_id = ? and date_uploaded=(select max(date_uploaded) from systemMetadata where series_id = ?)";
960 
                    stmt = dbConn.prepareStatement(sql);
961 
                    stmt.setString(1, sid.getValue());
962 
                    stmt.setString(2, sid.getValue());
963 
                    rs = stmt.executeQuery();
964 
                    if(rs.next()) {
965 
                        pid = new Identifier();
966 
                        pid.setValue(rs.getString(1));
967 
                    }
968 
                }
955 969
956 970 
            } catch (SQLException e) {
957 971 
                logMetacat.error("Error while get the head pid for the sid "+sid.getValue()+" : "

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