Examples of org.apache.jackrabbit.mk.model.Id

org.apache.jackrabbit.mk.model.Id
Represents an internal identifier, uniquely identifying a {@link Node} or a {@link Commit}.
This implementation aims at minimizing the in-memory footprint of an identifier instance. therefore it doesn't cache e.g. the hashCode or the string representation.
Important Note:
An {@link Id} is considered immutable. The {@code byte[]}passed to {@link Id#Id(byte[])} must not be reused or modified, the sameapplies for the {@code byte[]} returned by {@link Id#getBytes()}.

        }
    }


    @Override
    public String rebase(String branchRevisionId, String newBaseRevisionId) {
        Id branchId = Id.fromString(branchRevisionId);
        Id baseId = getBaseRevisionId(branchId);
        Id newBaseId = newBaseRevisionId == null ? getHeadRevisionId() : Id.fromString(newBaseRevisionId);


        if (baseId.equals(newBaseId)) {
            return branchRevisionId;
        }
        else {
            Id newBranchId = Id.fromString(branch(newBaseRevisionId));
            try {
                CommitBuilder cb = rep.getCommitBuilder(newBranchId,
                        "rebasing " + branchRevisionId + " onto " + newBaseRevisionId);
                return cb.rebase(baseId, branchId).toString();
            }

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        return ((StoredNodeAsState) node).getId();
    }


    @Override
    public NodeState getRoot() {
        Id id;
        try {
            id = getHeadCommitId();
        } catch (Exception e) {
            throw new RuntimeException(
                    "Failed to access the head commit identifier", e);

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        head = pm.readHead();
        if (head == null || head.getBytes().length == 0) {
            // assume virgin repository
            byte[] rawHead = Id.fromLong(commitCounter.incrementAndGet())
                    .getBytes();
            head = new Id(rawHead);


            Id rootNodeId = pm.writeNode(new MutableNode(this, "/"));
            MutableCommit initialCommit = new MutableCommit();
            initialCommit.setCommitTS(System.currentTimeMillis());
            initialCommit.setRootNodeId(rootNodeId);
            pm.writeCommit(head, initialCommit);
            pm.writeHead(head);

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         * before we have updated our token
         */
        tokensLock.readLock().lock();


        try {
            Id id = pm.writeNode(node);


            if (callback != null) {
                callback.postPersist(this, token);
            }

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        if (map instanceof PersistHook) {
            callback = (PersistHook) map;
            callback.prePersist(this, token);
        }


        Id id = pm.writeCNEMap(map);


        if (callback != null) {
            callback.postPersist(this, token);
        }

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        if (!headLock.writeLock().isHeldByCurrentThread()) {
            throw new IllegalStateException(
                    "putHeadCommit called without holding write lock.");
        }


        Id id = writeCommit(token, commit);
        setHeadCommitId(id);
        
        putTokens.remove(token);
        if (branchRootId != null) {
            branches.remove(branchRootId);

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    }


    public Id putCommit(PutToken token, MutableCommit commit) throws Exception {
        verifyInitialized();


        Id commitId = writeCommit(token, commit);
        putTokens.remove(token);


        Id branchRootId = commit.getBranchRootId();
        if (branchRootId != null) {
            branches.put(branchRootId, commitId);
        }
        
        return commitId;

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        if (commit instanceof PersistHook) {
            callback = (PersistHook) commit;
            callback.prePersist(this, token);
        }


        Id id = commit.getId();
        if (id == null) {
            id = Id.fromLong(commitCounter.incrementAndGet());
        }
        pm.writeCommit(id, commit);

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            return;
        }


        try {
            markUncommittedNodes();
            Id firstBranchRootId = markBranches();
            Id firstCommitId = markCommits();


            if (firstBranchRootId != null && firstBranchRootId.compareTo(firstCommitId) < 0) {
                firstCommitId = firstBranchRootId;
            }
            /* repair dangling parent commit of first preserved commit */

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     *             if an error occurs
     */
    private Id markBranches() throws Exception {
        /* Mark all branch commits */
        for (Entry<Id, Id> entry : branches.entrySet()) {
            Id branchRootId = entry.getKey();
            Id branchHeadId = entry.getValue();
            while (!branchHeadId.equals(branchRootId)) {
                StoredCommit commit = getCommit(branchHeadId);
                markCommit(commit);
                branchHeadId = commit.getParentId();
            }
        }
        /* Mark all master commits till the first branch root id */
        if (!branches.isEmpty()) {
            Id firstBranchRootId = branches.keySet().iterator().next();
            StoredCommit commit = getHeadCommit();


            for (;;) {
                markCommit(commit);
                if (commit.getId().equals(firstBranchRootId)) {

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