Class Command

Object
Command
public final class Command extends Object
Command line interface for Apache SIS. The main(String[]) method accepts the following actions:
Supported command-line actions
help Show a help overview.
about Show information about Apache SIS and system configuration.
mime-type Show MIME type for the given file.
identifier Show identifiers for metadata and referencing systems in the given file.
metadata Show metadata information for the given file.
crs Show Coordinate Reference System information for the given file or code.
info Show resource-specific information (e.g., grid geometry).
transform Convert or transform coordinates from given source CRS to target CRS.
translate Rewrite a data file in another format.
Each command can accepts some of the following options:
Supported command-line options
--sourceCRS The Coordinate Reference System of input data.
--targetCRS The Coordinate Reference System of output data.
--metadata Relative path to an auxiliary metadata file.
--format The output format: xml, wkt, wkt1 or text.
--locale The locale to use for the console output.
--timezone The timezone for the dates printed to the console output.
--encoding The encoding to use for some text inputs and for console output.
--colors Whether colorized output shall be enabled.
--brief Whether the output should contain only brief information.
--verbose Whether the output should contain more detailed information.
--debug Prints full stack trace in case of failure.
--help Lists the options available for a specific command.
The --locale, --timezone and --encoding options apply to the command output sent to the standard output stream, but usually do not apply to the error messages sent to the standard error stream. The reason is that command output may be targeted to a client, while the error messages are usually for the operator.

SIS installation on remote machines

Some sub-commands can operate on SIS installation on remote machines, provided that remote access has been enabled at the Java Virtual Machine startup time. See package javadoc for more information.
Since:
0.3

  • Field Details

    • INVALID_COMMAND_EXIT_CODE

      public static final int INVALID_COMMAND_EXIT_CODE
      The code given to System​.exit(int) when the program failed because of a unknown sub-command.
      See Also:

    • INVALID_OPTION_EXIT_CODE

      public static final int INVALID_OPTION_EXIT_CODE
      The code given to System​.exit(int) when the program failed because of a unknown option. The set of valid options depend on the sub-command to execute.
      See Also:

    • INVALID_ARGUMENT_EXIT_CODE

      public static final int INVALID_ARGUMENT_EXIT_CODE
      The code given to System​.exit(int) when the program failed because of an illegal user argument. The user arguments are everything which is not a command name or an option. They are typically file names, but can occasionally be other types like URL.
      See Also:

    • UNKNOWN_STORAGE_EXIT_CODE

      public static final int UNKNOWN_STORAGE_EXIT_CODE
      The code given to System​.exit(int) when a file given in argument uses an unknown file format.
      See Also:

    • IO_EXCEPTION_EXIT_CODE

      public static final int IO_EXCEPTION_EXIT_CODE
      The code given to System​.exit(int) when the program failed because of an IOException.
      See Also:

    • SQL_EXCEPTION_EXIT_CODE

      public static final int SQL_EXCEPTION_EXIT_CODE
      The code given to System​.exit(int) when the program failed because of an SQLException.
      See Also:

    • OTHER_ERROR_EXIT_CODE

      public static final int OTHER_ERROR_EXIT_CODE
      The code given to System​.exit(int) when the program failed for a reason other than the ones enumerated in the above constants.
      See Also:

  • Constructor Details

  • Method Details

    • configureLogging

      public static void configureLogging()
      Loads the logging configuration file if not already done, then configures the monoline formatter. This method performs two main tasks:
      1. If the "java.util.logging.config.file" is not set, then try to set it to $SIS_HOME/conf/logging​.properties and load that file.
      2. If the "derby​.stream​.error​.file" system property is not defined, then try to set it to $SIS_HOME/log/derby​.log.
      3. If the configuration file declares Monoline­Formatter as the console formatter, ensures that the formatter is loaded and resets its colors depending on whether X364 seems to be supported.
      This method can be invoked at initialization time, such as the beginning of main(…) static method.
      Since:
      1.5
      See Also:

    • writer

      public PrintWriter writer(boolean error)
      Returns the writer where this command sends its output.
      Parameters:
      error - true for the error stream, or false for the standard output stream.
      Returns:
      the stream where this command sends it output.
      Since:
      1.5

    • run

      public int run() throws Exception
      Runs the command. If an exception occurs, then the exception message is sent to the error output stream before to be thrown. Callers can map the exception to a system exit code by the exit­Code­For(Throwable) method.
      Returns:
      0 on success, or an exit code if the command failed for a reason other than a Java exception.
      Throws:
      Exception - if an error occurred during the command execution. This is typically, but not limited, to IOException, SQLException, Data­Store­Exception or Transform­Exception.

    • exitCodeFor

      public static int exitCodeFor(Throwable cause)
      Returns the exit code for the given exception, or 0 if unknown. This method iterates through the causes until an exception matching a *_EXIT_CODE constant is found.
      Parameters:
      cause - the exception for which to get the exit code.
      Returns:
      the exit code as one of the *_EXIT_CODE constant, or OTHER_ERROR_EXIT_CODE if unknown.

    • main

      public static void main(String[] args)
      Prints the information to the standard output stream.
      Parameters:
      args - command-line options.