define-field-accessor Macro

Summary

Defines a Java field accessor.

Package

lw-ji

Signature

define-field-accessor name class-name field-name static-p &optional is-final => name

Arguments

name⇩	A symbol.
class-name⇩	A string.
field-name⇩	A string.
static-p⇩	A boolean.
is-final⇩	A boolean.

Values

name

A symbol.

Description

The macro define-field-accessor defines a field accessor for a field in a Java class.

name, class-name, field-name, static-p and is-final are interpreted as for setup-field-accessor.

Unlike setup-field-accessor, define-field-accessor does not look up anything. The accessor does the look up first time it is called, and signals an error if something failed. This error should be of type:

java-class-error	Failed to find the class.
java-field-error	Failed to find the field, or found the field but wrong static-p value.
field-access-exception
	Got an exception trying to access the field.

Notes

1. In general, accessing fields should be avoided, because they are typically a less well-defined and implemented interface than methods, but sometimes it is necessary.
2. The importing interface generates appropriate define-field-accessor forms for public fields.

See also

setup-field-accessor