How to use

putString

method

in

org.matsim.core.utils.misc.ByteBufferUtils

private void writeSignalSystems(ByteBuffer out){
  out.putInt(this.signalGroups.getSignalGroupDataBySignalSystemId().size());
  for (Id<SignalSystem> systemId : this.signalGroups.getSignalGroupDataBySignalSystemId().keySet()){
    ByteBufferUtils.putString(out, systemId.toString());
    Map<Id<SignalGroup>, SignalGroupData> groups = this.signalGroups.getSignalGroupDataBySystemId(systemId);
    out.putInt(groups.size());
    for (SignalGroupData group : groups.values()){
      ByteBufferUtils.putString(out, group.getId().toString());
      out.putInt(group.getSignalIds().size());
      for (Id<Signal> signalId : group.getSignalIds()){
        ByteBufferUtils.putString(out, signalId.toString());
        SignalData signal = signalSystems.getSignalSystemData().get(systemId).getSignalData().get(signalId);
        ByteBufferUtils.putString(out, signal.getLinkId().toString());
        if (signal.getLaneIds() == null || signal.getLaneIds().isEmpty()){
          out.putInt(0);
          out.putInt(signal.getLaneIds().size());
          for (Id<Lane> laneId : signal.getLaneIds()){
            ByteBufferUtils.putString(out, laneId.toString());
          out.putInt(signal.getTurningMoveRestrictions().size());
          for (Id<Link> outLinkId : signal.getTurningMoveRestrictions()){
            ByteBufferUtils.putString(out, outLinkId.toString());

private static void writeAgent(AgentSnapshotInfo agInfo, ByteBuffer out) {
  String id = agInfo.getId().toString();
  ByteBufferUtils.putString(out, id);
  Point2D.Double point = OTFServerQuadTree.transform(new Coord(agInfo.getEasting(), agInfo.getNorthing()));
  out.putFloat((float) point.getX());
  out.putFloat((float) point.getY());
  out.putInt(agInfo.getAgentState().ordinal() ) ;
  out.putInt(agInfo.getUserDefined());
  out.putFloat((float)agInfo.getColorValueBetweenZeroAndOne());
}

private void writeSignalGroupStates(ByteBuffer out){
  out.putInt(this.signalTracker.getSignalGroupEvents().size());
  for (SignalGroupStateChangedEvent e : this.signalTracker.getSignalGroupEvents()){
    ByteBufferUtils.putString(out, e.getSignalSystemId().toString());
    ByteBufferUtils.putString(out, e.getSignalGroupId().toString());
    SignalGroupState state = e.getNewState();
    if (state.equals(SignalGroupState.GREEN)){
      out.putInt(1);
    }
    else if (state.equals(SignalGroupState.RED)){
      out.putInt(0);
    }
    else if (state.equals(SignalGroupState.REDYELLOW)){
      out.putInt(2);
    }
    else if (state.equals(SignalGroupState.YELLOW)){
      out.putInt(3);
    }
    else if (state.equals(SignalGroupState.OFF)){
      out.putInt(4);
    }
    
  }
  this.signalTracker.getSignalGroupEvents().clear();
}
 

private static void writeAgent(AgentSnapshotInfo pos, ByteBuffer out) {
  String id = pos.getId().toString();
  ByteBufferUtils.putString(out, id);
  Point2D.Double point = OTFServerQuadTree.transform(new Coord(pos.getEasting(), pos.getNorthing()));
  out.putFloat((float) point.getX());
  out.putFloat((float) point.getY());
  out.putInt(pos.getUserDefined());
  out.putFloat((float) pos.getColorValueBetweenZeroAndOne());
  out.putInt(pos.getAgentState().ordinal());
}

@Override
public void writeConstData(ByteBuffer out) throws IOException {
  out.putInt(this.schedule.getFacilities().size());
  for (TransitStopFacility facility : this.schedule.getFacilities().values()) {
    ByteBufferUtils.putString(out, facility.getId().toString());
    if (facility.getLinkId() != null) {
      // yyyy would most probably make sense to have something that generates coordinates for facilities
      Link link = this.network.getLinks().get( facility.getLinkId() ) ;
      if ( link==null ) {
        log.warn( " link not found; linkId: " + facility.getLinkId() ) ;
        ByteBufferUtils.putString(out,"");
        Point2D.Double point = OTFServerQuadTree.transform(facility.getCoord());
        out.putDouble(point.getX());
        out.putDouble(point.getY());
      } else {
        ByteBufferUtils.putString(out, facility.getLinkId().toString());
        AgentSnapshotInfo ps = agentSnapshotInfoFactory.createAgentSnapshotInfo(Id.create(facility.getId(), Person.class), link, 0.9*link.getLength(), 0) ;
        Point2D.Double point = OTFServerQuadTree.transform(new Coord(ps.getEasting(), ps.getNorthing()));
        out.putDouble(point.getX()) ;
        out.putDouble(point.getY()) ;
      }
    } else {
      ByteBufferUtils.putString(out,"");
      Point2D.Double point = OTFServerQuadTree.transform(facility.getCoord());
      out.putDouble(point.getX());
      out.putDouble(point.getY());
    }
  }
}

@Override
public void writeConstData(ByteBuffer out) throws IOException {
  String id = this.src.getLink().getId().toString();
  ByteBufferUtils.putString(out, id);
  //subtract minEasting/Northing somehow!
  Point2D.Double.Double linkStart = OTFServerQuadTree.transform(this.src.getLink().getFromNode().getCoord());
  Point2D.Double.Double linkEnd = OTFServerQuadTree.transform(this.src.getLink().getToNode().getCoord());
  out.putFloat((float) linkStart.x); 
  out.putFloat((float) linkStart.y);
  out.putFloat((float) linkEnd.x); 
  out.putFloat((float) linkEnd.y);
    if ( OTFVisConfigGroup.NUMBER_OF_LANES.equals(OTFClientControl.getInstance().getOTFVisConfig().getLinkWidthIsProportionalTo()) ) {
      out.putInt(NetworkUtils.getNumberOfLanesAsInt(0, this.src.getLink()));
    } else if ( OTFVisConfigGroup.CAPACITY.equals(OTFClientControl.getInstance().getOTFVisConfig().getLinkWidthIsProportionalTo()) ) {
      out.putInt( 1 + (int)(2.*this.src.getLink().getCapacity()/3600.) ) ;
      // yyyyyy 3600. is a magic number (the default of the capacity period attribute in Network) but I cannot get to the network (where "capacityPeriod" resides).  
      // Please do better if you know better.  kai, jun'11
    } else {
      throw new RuntimeException("I do not understand.  Aborting ..." ) ;
    }
}

/**
 * Tests {@link ByteBufferUtils#putString(java.nio.ByteBuffer, String)} and
 * {@link ByteBufferUtils#getString(java.nio.ByteBuffer)}. 
 */
public void testPutGetString() {
  final ByteBuffer buffer = ByteBuffer.allocate(100);
  buffer.putInt(5);
  ByteBufferUtils.putString(buffer, "foo bar");
  buffer.putChar('?');
  ByteBufferUtils.putString(buffer, "Hello World");
  buffer.putChar('!');
  
  buffer.flip();
  
  assertEquals(5, buffer.getInt());
  assertEquals("foo bar", ByteBufferUtils.getString(buffer));
  assertEquals('?', buffer.getChar());
  assertEquals("Hello World", ByteBufferUtils.getString(buffer));
  assertEquals('!', buffer.getChar());
  assertFalse(buffer.hasRemaining());
}