Program: 121324
Project: 121324
Buggy source:
@Override public void setPropertyValue(String id,Object value){
  if (id.equals(EParameterName.ACTIVATE.getName())) {
    setActivate((Boolean)value);
  }
  if (id.equals(EParameterName.RESUMING_CHECKPOINT.getName())) {
    setResumingConnection((Boolean)value);
  }
  if (id.equals(EParameterName.RESUMLABEL.getName())) {
    setResumingLabelConnection(value.toString());
  }
  if (id.equals(EParameterName.UNIQUE_NAME.getName())) {
    setUniqueName(value.toString());
  }
  if (EParameterName.TRACES_CONNECTION_ENABLE.getName().equals(id) && value instanceof Boolean) {
    setTraceConnection((Boolean)value);
  }
  if ((EParameterName.TRACES_SHOW_ENABLE.getName().equals(id) || EParameterName.ACTIVEBREAKPOINT.getName().equals(id)) && value instanceof Boolean) {
    if (PluginChecker.isTraceDebugPluginLoaded() && (lineStyle.hasConnectionCategory(IConnectionCategory.FLOW) || lineStyle.hasConnectionCategory(IConnectionCategory.MERGE))) {
      if (EParameterName.ACTIVEBREAKPOINT.getName().equals(id))       this.getElementParameter(EParameterName.ACTIVEBREAKPOINT.getName()).setValue(value);
      if (this.trace != null) {
        this.trace.setPropertyValue(EParameterName.ACTIVEBREAKPOINT.getName(),value);
      }
      firePropertyChange(EParameterName.ACTIVEBREAKPOINT.getName(),null,value);
      setProcessStates();
    }
  }
  if (EParameterName.TRACES_CONNECTION_FILTER.getName().equals(id)) {
    if (this.trace != null) {
      this.trace.setPropertyValue(id,value);
    }
    firePropertyChange(id,null,value);
    setProcessStates();
  }
  if (id.equals(LINESTYLE_PROP)) {
    setConnectorName((String)value);
  }
 else {
    if (id.equals(NAME)) {
      setName((String)value);
    }
 else {
      super.setPropertyValue(id,value);
    }
  }
  if (id.equals(NUMBER_PARALLEL) || id.equals(ENABLE_PARALLEL) || id.equals(EParameterName.LABEL.getName())) {
    updateName();
  }
  if (EParameterName.REPARTITIONER.getName().equals(id) || EParameterName.PARTITIONER.getName().equals(id) || EParameterName.DEPARTITIONER.getName().equals(id)|| EParameterName.NONE.getName().equals(id)) {
    firePropertyChange(id,null,value);
    IProcess process=this.getSource().getProcess();
    if (process instanceof IProcess2) {
      ((IProcess2)process).checkProcess();
    }
  }
}

Fixed version (ground truth):
@Override public void setPropertyValue(String id,Object value){
  if (id.equals(EParameterName.ACTIVATE.getName())) {
    setActivate((Boolean)value);
  }
  if (id.equals(EParameterName.RESUMING_CHECKPOINT.getName())) {
    setResumingConnection((Boolean)value);
  }
  if (id.equals(EParameterName.RESUMLABEL.getName())) {
    setResumingLabelConnection(value.toString());
  }
  if (id.equals(EParameterName.UNIQUE_NAME.getName())) {
    setUniqueName(value.toString());
  }
  if (EParameterName.TRACES_CONNECTION_ENABLE.getName().equals(id) && value instanceof Boolean) {
    setTraceConnection((Boolean)value);
  }
  if ((EParameterName.TRACES_SHOW_ENABLE.getName().equals(id) || EParameterName.ACTIVEBREAKPOINT.getName().equals(id)) && value instanceof Boolean) {
    if (PluginChecker.isTraceDebugPluginLoaded() && (lineStyle.hasConnectionCategory(IConnectionCategory.FLOW) || lineStyle.hasConnectionCategory(IConnectionCategory.MERGE))) {
      if (EParameterName.ACTIVEBREAKPOINT.getName().equals(id)) {
        this.getElementParameter(EParameterName.ACTIVEBREAKPOINT.getName()).setValue(value);
      }
      if (this.trace != null) {
        this.trace.setPropertyValue(EParameterName.ACTIVEBREAKPOINT.getName(),value);
      }
      firePropertyChange(EParameterName.ACTIVEBREAKPOINT.getName(),null,value);
      setProcessStates();
    }
  }
  if (EParameterName.TRACES_CONNECTION_FILTER.getName().equals(id)) {
    if (this.trace != null) {
      this.trace.setPropertyValue(id,value);
    }
    firePropertyChange(id,null,value);
    setProcessStates();
  }
  if (id.equals(LINESTYLE_PROP)) {
    setConnectorName((String)value);
  }
 else {
    if (id.equals(NAME)) {
      setName((String)value);
    }
 else {
      super.setPropertyValue(id,value);
    }
  }
  if (id.equals(NUMBER_PARALLEL) || id.equals(ENABLE_PARALLEL) || id.equals(EParameterName.LABEL.getName())) {
    updateName();
  }
  if (EParameterName.REPARTITIONER.getName().equals(id) || EParameterName.PARTITIONER.getName().equals(id) || EParameterName.DEPARTITIONER.getName().equals(id)|| EParameterName.NONE.getName().equals(id)) {
    firePropertyChange(id,null,value);
    IProcess process=this.getSource().getProcess();
    if (process instanceof IProcess2) {
      ((IProcess2)process).checkProcess();
    }
  }
}