17. Appendix: Development Issues

Metacat is an open source application, and we welcome contributions to the source from members of the community who are interested in helping out. This section will contain a series of technical details about Metacat that will help contributors understand and extend Metacat.

Detailed API documentation for Metacat is available with the release.

Contents:

• 17.1. Metacat Configuration Properties System
  • 17.1.1. Properties Overview
  • 17.1.2. Secret Properties
  • 17.1.3. Install and Upgrade Scenarios
• 17.2. Identifier Management
  • 17.2.1. Identifier Resolution
• 17.3. DOI Management
  • 17.3.1. DOI Generation
  • 17.3.2. DOI Registration
  • 17.3.3. DOI Registration for deprecated Metacat API
• 17.4. Metacat Usage Statistics Service
  • 17.4.1. Overview
  • 17.4.2. Requirements
  • 17.4.3. Statistics Service Solr Index
  • 17.4.4. Statistics Service Usage
  • 17.4.5. Unresolved Issues/Questions
• 17.5. ORE Model for Derived Data Packages
  • 17.5.1. Overview
  • 17.5.2. Ontology and Model
  • 17.5.3. Examples
  • 17.5.4. Sample RDF
  • 17.5.5. Indexing
• 17.6. Storage Subsystem
  • 17.6.1. Use Cases
  • 17.6.2. Requirements (Capabilities)
  • 17.6.3. Design diagrams
• 17.7. Physical File Layout, Hash-tree based
  • 17.7.1. Hash Trees (aka Merkle trees)
  • 17.7.2. Data packages as hash trees
  • 17.7.3. Data Information Package (DIP) prototype
  • 17.7.4. Delta changes