Nutz 1.b.53 Source Guide: Utility Modules and Call Chains

December 19, 2015

When reading the Nutz source, I started with utility modules and followed their use inside the framework. This reviews Java fundamentals while showing how reflection, conversion and I/O combine into higher-level features.

Fix a traceable source baseline

This series uses Nutz 1.b.53 source and APIs. Class names, defaults and implementation details can change between versions. When reading another version, consult its source, documentation and tests together rather than inferring behavior from old method names.

Follow dependencies when choosing an order

Module	Questions to explore
lang	Wrappers around strings, dates, I/O, paths and reflection
Mapl	Object-to-Map/List conversion, path updates and merging
JSON	Parsing, type conversion, field metadata and formatting
HTTP	Request construction, connections, responses, timeouts and cleanup
EL	Turning expression text into a result
Log	Adapting a common interface to concrete logging systems

These modules are connected. Object conversion depends on reflection and type information; JSON output depends on field descriptions and formatting. Identify entry points and shared dependencies, then follow one input through to output. This builds a clearer overall picture than reading files alphabetically.

Trace one question at a time

Run a minimal case, record arguments, results and exceptions, then follow significant calls. Distinguish overloads, core processing, type dispatch and external resources to avoid getting lost in helper branches.

After the normal path, test nulls, boundary types, cycles or invalid inputs. Returning an object does not establish preservation of every type. Providing a configuration option does not mean every branch reads it.

Series index

References