this.algorithm = algorithm;
        }

        @Override
        public void update(ByteBuffer input) {
            algorithm.update(input);
        }

        @Override
        public String checksum() {
            return algorithm.checksum();
        }
    }

        msgs.add("* as @threadSafe to support parallel building.                  *");
        msgs.add("* While this /may/ work fine, please look for plugin updates    *");
        msgs.add("* and/or request plugins be made thread-safe.                   *");
        msgs.add("* If reporting an issue, report it against the plugin in        *");

     */
    @Nonnull
    Model getEffectiveModel();

    /**
     * Gets the specified raw model as it was read from a model source. Apart from basic validation, a raw model has not
     * undergone any updates by the model builder, e.g. reflects neither inheritance nor interpolation. The model
     * identifier should be from the collection obtained by {@link #getModelIds()}. As a special case, an empty string

            writer.write(artifact.getId());
        }

        MessageDigest md = MessageDigest.getInstance("MD5");
        md.update(artifact.getId().getBytes());
        byte[] digest = md.digest();

        String md5path = repository.pathOf(artifact) + ".md5";
        File md5artifactFile = new File(repository.getBasedir(), md5path);

t/repository/ArtifactRepositoryPo.class package org.apache.maven.artifact.repository; public synchronized class ArtifactRepositoryPo { public static final String UPDATE_POLICY_NEVER = never; public static final String UPDATE_POLICY_ALWAYS = always; public static final String UPDATE_POLICY_DAILY = daily; public static final String UPDATE_POLICY_INTERVAL = interval; public static final String CHECKSUM_POLICY_FAIL = fail; public static final String CHECKSUM_POLICY_WARN = warn; public static final String...

~~ specific language governing permissions and limitations
~~ under the License.

  ---
  Offline Mode Design
  ---
  John Casey
  ---
  2005-04-08
  ---

Offline Mode Design

* UPDATE: 18-April-2005

  We cannot take the approach outlined below of detecting which remote
  repositories are "really" offline, since offline mode is more of a behavior,

                    }
                } else {
                    update = updateCheckManager.isUpdateRequired(metadata, repository, file);
                }

                if (update) {
                    getLogger().info(metadata.getKey() + ": checking for updates from " + repository.getId());
                    try {

        String checksums = toRepositoryChecksumPolicy(RepositoryPolicy.CHECKSUM_POLICY_WARN); // the default
        String updates = RepositoryPolicy.UPDATE_POLICY_DAILY;

        if (policy != null) {
            enabled = policy.isEnabled();
            if (policy.getUpdatePolicy() != null) {
                updates = policy.getUpdatePolicy();
            }
            if (policy.getChecksumPolicy() != null) {

                getLogger()
                        .debug("Skipping update check for " + artifact + " (" + file + ") from " + repository.getId()
                                + " (" + repository.getUrl() + ")");
            }

            return false;
        }

        if (getLogger().isDebugEnabled()) {
            getLogger()
                    .debug("Determining update check for " + artifact + " (" + file + ") from " + repository.getId()

                    true,
                    ArtifactRepositoryPolicy.UPDATE_POLICY_ALWAYS,
                    ArtifactRepositoryPolicy.CHECKSUM_POLICY_IGNORE);
        }

        this.snapshots = snapshots;

        if (releases == null) {
            releases = new ArtifactRepositoryPolicy(
                    true,
                    ArtifactRepositoryPolicy.UPDATE_POLICY_ALWAYS,