Program: 127444
Project: 127444
Buggy source:
public static String generateNewQuery(final IMetadataTable repositoryMetadata,final String dbType,final String tableNameWithQuoteIfNeed,final String... realTableName){
  if (repositoryMetadata == null) {
    return "String_Node_Str";
  }
  List<IMetadataColumn> metaDataColumnList=repositoryMetadata.getListColumns();
  int index=metaDataColumnList.size();
  if (index == 0) {
    return "String_Node_Str";
  }
  isContextQuery=false;
  if (isContext(tableNameWithQuoteIfNeed)) {
    isContextQuery=true;
  }
  String columnsQuery="String_Node_Str";
  for (int i=0; i < metaDataColumnList.size(); i++) {
    IMetadataColumn metaDataColumn=metaDataColumnList.get(i);
    String columnName=quoteStringValue(metaDataColumn.getOriginalDbColumnName(),dbType);
    String columnStr=columnName;
    if (dbType != null && (dbType.equals(EDatabaseTypeName.MSSQL.getDisplayName()) || dbType.equals(EDatabaseTypeName.JAVADB_EMBEDED.getDisplayName()))) {
      columnStr=TalendQuoteUtils.addQuotesIfNotExist(metaDataColumn.getOriginalDbColumnName());
    }
    if (i != index - 1) {
      columnStr=checkAndConcatString(columnStr,TalendTextUtils.declareString("String_Node_Str" + SPACE));
    }
    columnStr=checkAndConcatString(TalendTextUtils.declareString("String_Node_Str"),columnStr);
    columnStr=checkAndConcatString(tableNameWithQuoteIfNeed,columnStr);
    if ("String_Node_Str".equals(columnsQuery.trim())) {
      columnsQuery=columnStr;
    }
 else {
      columnsQuery=checkAndConcatString(columnsQuery,columnStr);
    }
  }
  boolean isCheck=CorePlugin.getDefault().getPreferenceStore().getBoolean(ITalendCorePrefConstants.SQL_ADD_QUOTE);
  String query=TalendTextUtils.declareString("String_Node_Str");
  if (isContextQuery) {
    String end=ENTER + CON + checkAndConcatString(TalendTextUtils.declareString("String_Node_Str"),tableNameWithQuoteIfNeed);
    end=replaceTheSchemaString(end);
    query=checkAndConcatString(query,columnsQuery) + end;
  }
 else   if (dbType != null && dbType.equals(EDatabaseTypeName.INFORMIX.getDisplayName())) {
    String declareString=TalendTextUtils.getStringDeclare();
    String end="String_Node_Str";
    if (!isCheck) {
      end=checkAndConcatString(TalendTextUtils.declareString("String_Node_Str"),declareString + realTableName[0] + declareString);
    }
 else {
      end=checkAndConcatString(TalendTextUtils.declareString("String_Node_Str"),declareString + realTableName[0].substring(2,realTableName[0].length() - 2) + declareString);
    }
    query=checkAndConcatString(checkAndConcatString(query,columnsQuery),end);
  }
 else   if (dbType != null && dbType.equals(EDatabaseTypeName.MSSQL.getDisplayName())) {
    String declareString=TalendTextUtils.getStringDeclare();
    String end=checkAndConcatString(TalendTextUtils.declareString("String_Node_Str"),declareString + realTableName[0] + declareString);
    end=replaceTheSchemaString(end);
    query=checkAndConcatString(checkAndConcatString(query,columnsQuery),end);
  }
 else {
    String end=checkAndConcatString(TalendTextUtils.declareString("String_Node_Str"),tableNameWithQuoteIfNeed);
    end=replaceTheSchemaString(end);
    query=checkAndConcatString(checkAndConcatString(query,columnsQuery),end);
  }
  return query;
}

Fixed version (ground truth):
public static String generateNewQuery(final IMetadataTable repositoryMetadata,final String dbType,final String tableNameWithQuoteIfNeed,final String... realTableName){
  if (repositoryMetadata == null) {
    return "String_Node_Str";
  }
  List<IMetadataColumn> metaDataColumnList=repositoryMetadata.getListColumns();
  int index=metaDataColumnList.size();
  if (index == 0) {
    return "String_Node_Str";
  }
  isContextQuery=false;
  if (isContext(tableNameWithQuoteIfNeed)) {
    isContextQuery=true;
  }
  String columnsQuery="String_Node_Str";
  for (int i=0; i < metaDataColumnList.size(); i++) {
    IMetadataColumn metaDataColumn=metaDataColumnList.get(i);
    String columnName=quoteStringValue(metaDataColumn.getOriginalDbColumnName(),dbType);
    String columnStr=columnName;
    if (dbType != null && Pattern.matches("String_Node_Str",metaDataColumn.getOriginalDbColumnName()) && (dbType.equals(EDatabaseTypeName.MSSQL.getDisplayName()) || dbType.equals(EDatabaseTypeName.JAVADB_EMBEDED.getDisplayName()))) {
      columnStr=TalendQuoteUtils.addQuotesIfNotExist(metaDataColumn.getOriginalDbColumnName());
    }
    if (i != index - 1) {
      columnStr=checkAndConcatString(columnStr,TalendTextUtils.declareString("String_Node_Str" + SPACE));
    }
    columnStr=checkAndConcatString(TalendTextUtils.declareString("String_Node_Str"),columnStr);
    columnStr=checkAndConcatString(tableNameWithQuoteIfNeed,columnStr);
    if ("String_Node_Str".equals(columnsQuery.trim())) {
      columnsQuery=columnStr;
    }
 else {
      columnsQuery=checkAndConcatString(columnsQuery,columnStr);
    }
  }
  boolean isCheck=CorePlugin.getDefault().getPreferenceStore().getBoolean(ITalendCorePrefConstants.SQL_ADD_QUOTE);
  String query=TalendTextUtils.declareString("String_Node_Str");
  if (isContextQuery) {
    String end=ENTER + CON + checkAndConcatString(TalendTextUtils.declareString("String_Node_Str"),tableNameWithQuoteIfNeed);
    end=replaceTheSchemaString(end);
    query=checkAndConcatString(query,columnsQuery) + end;
  }
 else   if (dbType != null && dbType.equals(EDatabaseTypeName.INFORMIX.getDisplayName())) {
    String declareString=TalendTextUtils.getStringDeclare();
    String end="String_Node_Str";
    if (!isCheck) {
      end=checkAndConcatString(TalendTextUtils.declareString("String_Node_Str"),declareString + realTableName[0] + declareString);
    }
 else {
      end=checkAndConcatString(TalendTextUtils.declareString("String_Node_Str"),declareString + realTableName[0].substring(2,realTableName[0].length() - 2) + declareString);
    }
    query=checkAndConcatString(checkAndConcatString(query,columnsQuery),end);
  }
 else   if (dbType != null && dbType.equals(EDatabaseTypeName.MSSQL.getDisplayName())) {
    String declareString=TalendTextUtils.getStringDeclare();
    String end=checkAndConcatString(TalendTextUtils.declareString("String_Node_Str"),declareString + realTableName[0] + declareString);
    end=replaceTheSchemaString(end);
    query=checkAndConcatString(checkAndConcatString(query,columnsQuery),end);
  }
 else {
    String end=checkAndConcatString(TalendTextUtils.declareString("String_Node_Str"),tableNameWithQuoteIfNeed);
    end=replaceTheSchemaString(end);
    query=checkAndConcatString(checkAndConcatString(query,columnsQuery),end);
  }
  return query;
}