Command line bindings which are not directly associated with input parameters.
Specifies the program to execute. If an array, the first element of the array is the command to execute, and subsequent elements are mandatory command line arguments. The elements in baseCommand must appear before any command line bindings from inputBinding or arguments. If baseCommand is not provided or is an empty array, the first element of the command line produced after processing inputBinding or arguments must be used as the program to execute. If the program includes a path separator character it must be an absolute path, otherwise it is an error. If the program does not include a path separator, search the $PATH variable in the runtime environment of the workflow runner find the absolute path of the executable.
CWL document version. Always required at the document root. Not required for a Process embedded inside another Process.
A long, human-readable description of this process object.
Declares hints applying to either the runtime environment or the workflow engine that may be helpful in executing this process. It is not an error if an implementation cannot satisfy all hints, however the implementation may report a warning.
The unique identifier for this process object.
Defines the input parameters of the process. The process is ready to run when all required input parameters are associated with concrete values. Input parameters include a schema for each parameter which is used to validate the input object. It may also be used to build a user interface for constructing the input object. When accepting an input object, all input parameters must have a value. If an input parameter is missing from the input object, it must be assigned a value of null (or the value of default for that parameter, if provided) for the purposes of validation and evaluation of expressions.
A short, human-readable label of this process object.
Defines the parameters representing the output of the process. May be used to generate and/or validate the output object.
Exit codes that indicate the process failed due to a permanent logic error, where executing the process with the same runtime environment and same inputs is expected to always fail.
Declares requirements that apply to either the runtime environment or the workflow engine that must be met in order to execute this process. If an implementation cannot satisfy all requirements, or a requirement is listed which is not recognized by the implementation, it is a fatal error and the implementation must not attempt to run the process, unless overridden at user option.
Capture the command's standard error stream to a file written to the designated output directory. If stderr is a string, it specifies the file name to use. If stderr is an expression, the expression is evaluated and must return a string with the file name to use to capture stderr. If the return value is not a string, or the resulting path contains illegal characters (such as the path separator /) it is an error.
A path to a file whose contents must be piped into the command's standard input stream.
Capture the command's standard output stream to a file written to the designated output directory. If stdout is a string, it specifies the file name to use. If stdout is an expression, the expression is evaluated and must return a string with the file name to use to capture stdout. If the return value is not a string, or the resulting path contains illegal characters (such as the path separator /) it is an error.
Exit codes that indicate the process completed successfully.
Exit codes that indicate the process failed due to a possibly temporary condition, where executing the process with the same runtime environment and inputs may produce different results.
This defines the schema of the CWL Command Line Tool Description document.