OCFL Java

This project is a Java implementation of the OCFL spec. It supports the following spec versions: 1.0, 1.1.

This project is currently maintained by Peter Winckles. Contributions in the form of Github issues and PRs are welcome, and will be reviewed in a timely fashion.

Requirements and Setup

ocfl-java requires Java 11 or greater to run.

Add the following to your project's POM to pull in the library:

<dependency>
    <groupId>io.ocfl</groupId>
    <artifactId>ocfl-java-core</artifactId>
    <version>2.2.1</version>
</dependency>

If you want S3 support, you must additionally add the following dependency:

<dependency>
    <groupId>io.ocfl</groupId>
    <artifactId>ocfl-java-aws</artifactId>
    <version>2.2.1</version>
</dependency>

Example Usage

var repoDir = Paths.get("ocfl-repo"); // This directory contains the OCFL storage root.
var workDir = Paths.get("ocfl-work"); // This directory is used to assemble OCFL versions. It cannot be within the OCFL storage root.

var repo = new OcflRepositoryBuilder()
        .defaultLayoutConfig(new HashedNTupleLayoutConfig())
        .storage(storage -> storage.fileSystem(repoDir))
        .workDir(workDir)
        .build();

repo.putObject(ObjectVersionId.head("o1"), Paths.get("object-out-dir"), new VersionInfo().setMessage("initial commit"));
repo.getObject(ObjectVersionId.head("o1"), Paths.get("object-in-dir"));

repo.updateObject(ObjectVersionId.head("o1"), new VersionInfo().setMessage("update"), updater -> {
    updater.addPath(Paths.get("path-to-file2"), "file2")
            .removeFile("file1")
            .addPath(Paths.get("path-to-file3"), "dir1/file3");
});

// Contains object details and lazy-load resource handles
var objectVersion = repo.getObject(ObjectVersionId.version("o1", "v1"));

Additional Documentation

• See the usage guide for more details on how to setup ocfl-java
• Javadoc
  • ocfl-java-api
  • ocfl-java-core
  • ocfl-java-aws
• Developer guide