Quick links

Please find below the links to the codes referenced on this documentation page:

• EPCIS vocabulary/constants application code : https://github.com/openepcis/openepcis-epcis-constants

Introduction

In the development of applications compliant with the EPCIS standard, developers frequently encounter a set of recurring constants and string values. These values, representing standard EPCIS terms, event information, GS1-related keywords, etc. are crucial for ensuring data consistency and interoperability.

Managing these constants across multiple OpenEPCIS projects has been a challenge. Duplication of definitions leads to maintenance overhead, increased risk of inconsistencies, and hinders code readability. This project, OpenEPCIS Event Constants, addresses these issues by providing a centralized repository for these essential values.

The EPCIS standard defines a set of vocabulary. This data often includes standardized terms and identifiers, such as:

• bizStep: Represents a business step in the supply chain.
• disposition: Describes the state of a physical entity.
• sgtin: Describes a type of identifier in EPCIS.
• ObjectEvent: Describes a type of event in EPCIS.

These values are fundamental to various EPCIS based projects during the validation or processing.

Usage

The constant information is encapsulated within the EPCIS class, providing direct access to standardized values.

Example 1: Retrieving the bizStep keyword:

final String businessStep=EPCIS.BIZ_STEP;
System.out.println("Business Step: "+businessStep); // output: bizStep

final String errorDeclaration=EPCIS.ERROR_DECLARATION;
System.out.println("Error Declaration: "+errorDeclaration); // output: errorDeclaration

Contribution

The OpenEPCIS project encourages community contributions to expand and improve the vocabulary repository. Developers can contribute by:

• Adding new EPCIS vocabulary or constant terms.
• Improving existing vocabulary.
• Providing feedback and suggestions.
• Adding test cases that validate the vocabulary.

By centralizing and standardizing EPCIS vocabulary, this project helps developers to develop EPCIS applications more efficiently.