EventReplayHandler.java

package org.yamcs.archive;

import org.yamcs.YamcsException;
import org.yamcs.protobuf.Yamcs.Event;
import org.yamcs.protobuf.Yamcs.ProtoDataType;
import org.yamcs.protobuf.Yamcs.ReplayRequest;
import org.yamcs.yarch.Tuple;

import com.google.protobuf.MessageLite;

public class EventReplayHandler implements ReplayHandler {
    ReplayRequest request;
    
    @Override
    public void setRequest(ReplayRequest newRequest) throws YamcsException {
        this.request = newRequest;
    }

    @Override
    public String getSelectCmd() {
        StringBuilder sb=new StringBuilder();
        sb.append("SELECT ").append(ProtoDataType.EVENT.getNumber()).append(",* from events");
        appendWhereClause(sb, request);
        if(request.hasReverse() && request.getReverse()) {
            sb.append(" ORDER DESC");
        }
        return sb.toString();
    }


    static void appendWhereClause(StringBuilder sb, ReplayRequest request) {
        if(request.hasStart() || (request.hasStop())) {
            sb.append(" where ");
            if(request.hasStart()) {
                sb.append(" gentime>="+request.getStart());
                if(request.hasStop()) sb.append(" and gentime<"+request.getStop());
            } else {
                sb.append(" gentime<"+request.getStop());
            }
        }
    }
   
    @Override
    public MessageLite transform(Tuple t) {
        return (Event) t.getColumn("body");
    }

    @Override
    public void reset() {
        
    }

}