Program: 68625
Project: 68625
Buggy source:
public String doSelection(String input){
  String retValue=null;
  if (dataSetHandle != null || designHandle instanceof TabularCubeHandle || designHandle instanceof TabularHierarchyHandle) {
    DataSetHandle dataSet=null;
    if (dataSetHandle != null) {
      dataSet=dataSetHandle;
    }
 else {
      if (designHandle instanceof TabularCubeHandle) {
        dataSet=((TabularCubeHandle)designHandle).getDataSet();
      }
 else {
        dataSet=((TabularHierarchyHandle)designHandle).getDataSet();
      }
    }
    try {
      List selectValueList=dataSetHandle != null ? SelectValueFetcher.getSelectValueList(ExpressionButtonUtil.getExpression(expression),dataSet,false) : SelectValueFetcher.getSelectValueFromBinding(ExpressionButtonUtil.getExpression(expression),dataSet,DEUtil.getVisiableColumnBindingsList(designHandle).iterator(),false);
      SelectValueDialog dialog=new SelectValueDialog(PlatformUI.getWorkbench().getDisplay().getActiveShell(),Messages.getString("String_Node_Str"));
      dialog.setSelectedValueList(selectValueList);
      if (dialog.open() == IDialogConstants.OK_ID) {
        retValue=dialog.getSelectedExprValue();
      }
    }
 catch (    BirtException e1) {
      MessageDialog.openError(null,Messages.getString("String_Node_Str"),Messages.getString("String_Node_Str") + "String_Node_Str" + e1.getMessage());
    }
  }
 else {
    for (Iterator iter=columnList.iterator(); iter.hasNext(); ) {
      String columnName=getColumnName(iter.next());
      Expression expr=ExpressionButtonUtil.getExpression(expression);
      if (expr != null) {
        String exprType=expr.getType();
        IExpressionConverter converter=ExpressionUtility.getExpressionConverter(exprType);
        if (expression.getText().equals(ExpressionUtility.getColumnExpression(columnName,converter))) {
          bindingName=columnName;
          break;
        }
      }
    }
    if (bindingName == null && expression.getText().trim().length() > 0)     bindingName=expression.getText().trim();
    if (bindingName != null) {
      try {
        List selectValueList=getSelectValueList();
        SelectValueDialog dialog=new SelectValueDialog(PlatformUI.getWorkbench().getDisplay().getActiveShell(),Messages.getString("String_Node_Str"));
        dialog.setSelectedValueList(selectValueList);
        if (bindingParams != null) {
          dialog.setBindingParams(bindingParams);
        }
        if (dialog.open() == IDialogConstants.OK_ID) {
          retValue=dialog.getSelectedExprValue();
        }
      }
 catch (      Exception ex) {
        MessageDialog.openError(null,Messages.getString("String_Node_Str"),Messages.getString("String_Node_Str") + "String_Node_Str" + ex.getMessage());
      }
    }
 else {
      MessageDialog.openInformation(null,Messages.getString("String_Node_Str"),Messages.getString("String_Node_Str"));
    }
  }
  return retValue;
}

Fixed version (ground truth):
public String doSelection(String input){
  String retValue=null;
  if (dataSetHandle != null || designHandle instanceof TabularCubeHandle || designHandle instanceof TabularHierarchyHandle) {
    DataSetHandle dataSet=null;
    if (dataSetHandle != null) {
      dataSet=dataSetHandle;
    }
 else {
      if (designHandle instanceof TabularCubeHandle) {
        dataSet=((TabularCubeHandle)designHandle).getDataSet();
      }
 else {
        dataSet=((TabularHierarchyHandle)designHandle).getDataSet();
      }
    }
    try {
      List selectValueList=dataSetHandle != null ? SelectValueFetcher.getSelectValueList(ExpressionButtonUtil.getExpression(expression),dataSet,false) : SelectValueFetcher.getSelectValueFromBinding(ExpressionButtonUtil.getExpression(expression),dataSet,DEUtil.getVisiableColumnBindingsList(designHandle).iterator(),DEUtil.getGroups(designHandle).iterator(),false);
      SelectValueDialog dialog=new SelectValueDialog(PlatformUI.getWorkbench().getDisplay().getActiveShell(),Messages.getString("String_Node_Str"));
      dialog.setSelectedValueList(selectValueList);
      if (dialog.open() == IDialogConstants.OK_ID) {
        retValue=dialog.getSelectedExprValue();
      }
    }
 catch (    BirtException e1) {
      MessageDialog.openError(null,Messages.getString("String_Node_Str"),Messages.getString("String_Node_Str") + "String_Node_Str" + e1.getMessage());
    }
  }
 else {
    for (Iterator iter=columnList.iterator(); iter.hasNext(); ) {
      String columnName=getColumnName(iter.next());
      Expression expr=ExpressionButtonUtil.getExpression(expression);
      if (expr != null) {
        String exprType=expr.getType();
        IExpressionConverter converter=ExpressionUtility.getExpressionConverter(exprType);
        if (expression.getText().equals(ExpressionUtility.getColumnExpression(columnName,converter))) {
          bindingName=columnName;
          break;
        }
      }
    }
    if (bindingName == null && expression.getText().trim().length() > 0)     bindingName=expression.getText().trim();
    if (bindingName != null) {
      try {
        List selectValueList=getSelectValueList();
        SelectValueDialog dialog=new SelectValueDialog(PlatformUI.getWorkbench().getDisplay().getActiveShell(),Messages.getString("String_Node_Str"));
        dialog.setSelectedValueList(selectValueList);
        if (bindingParams != null) {
          dialog.setBindingParams(bindingParams);
        }
        if (dialog.open() == IDialogConstants.OK_ID) {
          retValue=dialog.getSelectedExprValue();
        }
      }
 catch (      Exception ex) {
        MessageDialog.openError(null,Messages.getString("String_Node_Str"),Messages.getString("String_Node_Str") + "String_Node_Str" + ex.getMessage());
      }
    }
 else {
      MessageDialog.openInformation(null,Messages.getString("String_Node_Str"),Messages.getString("String_Node_Str"));
    }
  }
  return retValue;
}