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JavaBean Library

Access JavaBeans as a nested directory structure. This command library provides a number of commands to manipulate the JavaBeans in the context. It has a Naked Objects flavor. There is a current JavaBean like there is a current directory, it tries to apply the same traversal logic from file systems to JavaBeans.

The library can also be useful while debugging a script that uses Java objects in it expressions. The library allows you to inspect these instances.

bean-cd

Go to another location. Absolute or relative paths allowed.

  • '/' is the context of the repl.
  • '.' and '..' have the usual meaning: the current location and the parent location.
  • '[5]' indexing. Arrays, lists can be indexed. 'xyz[5]' has same semantics as 'xyz/5'.

bean-pwd

Print the current path, the result is a string.

bean-ls

List the contents of the denoted object. The action depends on the type of the object, properties, array elements are listed. By default the listing is printed on the output and returned as the result, but the printing can be suppressed with the quiet=true option.

  • quiet = true | false*. Prevents writing output, only returns the directory instance.

bean-cat

Convert the denoted object to a string. By defult the result is printed on the output and returned as the result, but the printing can be suppressed with the quiet=true option.

  • quiet = true | false*. Prevents writing output, only returns the string.

bean-get

Convert a pathname to the object itself. We can obtain a direct reference to the object in this way. This command is the bridge to other command libraries because you can pass values to other command libraries in this way.

bean-call

Call java methods on an object denoted by a path. The target object should be denoted by a pathname. The method can be specified by a method instance or by a name (and a lookup will occur). The arguments are not resolved, they are passed directly to the method. You can use the 'rslv' command above to accomplish argument resolution as well. It has the form (bean-call $bean method arg1 ... argN).

bean-set

Set the property of a JavaBean. The arguments should be a pair, a propname=value combination.