protected void validateImportOptions()

in odps-sqoop/src/java/org/apache/sqoop/tool/ImportTool.java [1019:1105]
87 lines of code
46 McCabe index (conditional complexity)

  protected void validateImportOptions(SqoopOptions options)
      throws InvalidOptionsException {
    if (!allTables && !options.isHdfsToOdps()
        && options.getTableName() == null
        && options.getSqlQuery() == null) {
      throw new InvalidOptionsException(
          "--table or --" + SQL_QUERY_ARG + " is required for import. "
          + "(Or use sqoop import-all-tables / --hdfs-to-odps.)"
          + HELP_STR);
    } else if (options.getExistingJarName() != null
        && options.getClassName() == null) {
      throw new InvalidOptionsException("Jar specified with --jar-file, but no "
          + "class specified with --class-name." + HELP_STR);
    } else if (options.getTargetDir() != null
        && options.getWarehouseDir() != null) {
      throw new InvalidOptionsException(
          "--target-dir with --warehouse-dir are incompatible options."
          + HELP_STR);
    } else if (options.getTableName() != null
        && options.getSqlQuery() != null) {
      throw new InvalidOptionsException(
          "Cannot specify --" + SQL_QUERY_ARG + " and --table together."
          + HELP_STR);
    } else if (options.getSqlQuery() != null
        && options.getTargetDir() == null
        && options.getHBaseTable() == null
        && options.getHCatTableName() == null
        && options.getAccumuloTable() == null
        && options.getOdpsTable() == null
        && options.getOdpsProject() == null) {
      throw new InvalidOptionsException(
          "Must specify destination with --target-dir. "
          + HELP_STR);
    } else if (options.getSqlQuery() != null && options.doHiveImport()
        && options.getHiveTableName() == null) {
      throw new InvalidOptionsException(
          "When importing a query to Hive, you must specify --"
          + HIVE_TABLE_ARG + "." + HELP_STR);
    } else if (options.getSqlQuery() != null && options.getNumMappers() > 1
        && options.getSplitByCol() == null) {
      throw new InvalidOptionsException(
          "When importing query results in parallel, you must specify --"
          + SPLIT_BY_ARG + "." + HELP_STR);
    } else if (options.isDirect()
            && options.getFileLayout() != SqoopOptions.FileLayout.TextFile
            && options.getConnectString().contains("jdbc:mysql://")) {
      throw new InvalidOptionsException(
            "MySQL direct import currently supports only text output format. "
             + "Parameters --as-sequencefile --as-avrodatafile and --as-parquetfile are not "
             + "supported with --direct params in MySQL case.");
    } else if (options.isDirect()
            && options.doHiveDropDelims()) {
      throw new InvalidOptionsException(
            "Direct import currently do not support dropping hive delimiters,"
            + " please remove parameter --hive-drop-import-delims.");
    } else if (allTables && options.isValidationEnabled()) {
      throw new InvalidOptionsException("Validation is not supported for "
            + "all tables but single table only.");
    } else if (options.getSqlQuery() != null && options.isValidationEnabled()) {
      throw new InvalidOptionsException("Validation is not supported for "
            + "free from query but single table only.");
    } else if (options.getWhereClause() != null
            && options.isValidationEnabled()) {
      throw new InvalidOptionsException("Validation is not supported for "
            + "where clause but single table only.");
    } else if (options.getIncrementalMode()
        != SqoopOptions.IncrementalMode.None && options.isValidationEnabled()) {
      throw new InvalidOptionsException("Validation is not supported for "
        + "incremental imports but single table only.");
    } else if ((options.getTargetDir() != null
      || options.getWarehouseDir() != null)
      && options.getHCatTableName() != null) {
      throw new InvalidOptionsException("--hcatalog-table cannot be used "
        + " --warehouse-dir or --target-dir options");
    } else if (options.isDeleteMode() && options.isAppendMode()) {
       throw new InvalidOptionsException("--append and --delete-target-dir can"
         + " not be used together.");
    } else if (options.isDeleteMode() && options.getIncrementalMode()
         != SqoopOptions.IncrementalMode.None) {
       throw new InvalidOptionsException("--delete-target-dir can not be used"
         + " with incremental imports.");
    } else if (options.getAutoResetToOneMapper()
        && (options.getSplitByCol() != null)) {
        throw new InvalidOptionsException("--autoreset-to-one-mapper and"
          + " --split-by cannot be used together.");
    }
  }