Purple Utilities

This is a collection of classes useful for many types of web applications and gathered into a single relatively small library for easy use.

Please find the JavaDoc for the Purple Utilities at http://purplehillsbooks.com/purpleDoc/

• purple.jar - Nov 24, 2020

Find more information at: Purple on GitHub.

Release notes

Dec, 2020

• Added an interface TemplatizedMessage which other exception classes can implement, and if so can have their own exception templates and parameters included in the JSON conversion.

Nov, 2020

• Added JSON Servlet classes now making it easy to extend these classes to make your own REST oriented data server that sends and receives data in JSON format. Very convenient for JSON API support.
• JSONSchema allows $ref reference to another schema
• FileSchemaLibrary class added to manage referenced schemas
• JSONDelta class generates a diff JSONObject from two other JSONObjects
• Conversions XML to/fom JSON more robust
• LockableJSONFile extra lock eliminated to avoid bug with zero length files
• JSONException parameters limited in size

June, 2020

• XML to JSON converter is a little smarter about detecting the schema
• Support for JSONSchema, both generation of schema object from example, and validation of example by schema
• CSVHelper has write method with variable parameters that is easier to use
• Writing XML avoids writing some characters that are not parseable by XML parser

December, 2018

• New classes JSONDiff and JSONFormatter offer command line commands for formatting a JSON file, and for comparing two different JSON files.

November, 2018

• A variety of changes to allow for high reliable manipulation of JSON files in an environment where the file system is unreliable.