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Mercury provides an implementation-neutral way to access GAV-based repositories, including AV repositories, like OSGi. OSGi access is not implemented yet. By access I mean reading artifacts and metadata from repositories and writing artifacts to repositories, metadata is updated by writes.

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• vr.readVersions( Collection<ArtifactBasicMetadata> query ) this is the only call that interprets queries. All others treat supplied versions as exact, not as queries.
  • this one takes a collection of queries in the form of ArtifactBasicMetadata and returns a collection of good old ArtifactBasicMetadata ojects. The input object can have a query in the version field
  • version query is now accepted as:
    • 1.2.3 - means any version, higher or equal to 1.2.3, variations:
      • 1.2.3-SNAPSHOT - find latest snapshot of this version
      • 1.2.3-LATEST - find latest snapshot or release of this version
      • 1.2.3-RELEASE - find latest release of this version
    • range in the form of
      • [1.2.3,) this is equal to simple 1.2.3 query
      • (1.2.3,) same as previous, but 1.2.3 version is excluded from results
      • all other obvious variations of /( V1, V2/)
• vr.readArtifacts(Collection<ArtifactBasicMetadata> query) - retrieve full-blown Artifact for each query element. Artifacts are charged with pomBytes() and a reference to a local file
• vr.readDependencies( Collection<ArtifactBasicMetadata> query ) - returns a List<ArtifactBasicMetadata> of dependencies for each element of the query.In other words - it returns an instance of ArtifactMetadata for each ArtifactBasicMetadata from query. This call is mostly for dependency tree builder. And of cause - for you, if you find a creative way to utilize it vr.readArtifacts(Collection<ArtifactBasicMetadata> query) - retrieve full-blown Artifact for each query element. Artifacts are charged with pomBytes() and a reference to a local file

Build Details

To write client code that can read and write repositories, declare the following dependencies:

    <dependency>
      <groupId>org.apache.maven.mercury</groupId>
      <artifactId>mercury-repo-local-m2</artifactId>
      <version>${mercury.version}</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.apache.maven.mercury</groupId>
      <artifactId>mercury-repo-remote-m2</artifactId>
      <version>${mercury.version}</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.apache.maven.mercury</groupId>
      <artifactId>mercury-repo-virtual</artifactId>
      <version>${mercury.version}</version>
    </dependency>

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