Examples of org.eclipse.jgit.lib.Repository.resolve()

org.eclipse.jgit.lib.Repository.resolve()
Parse a git revision string and return an object id. Combinations of these operators are supported:
- HEAD, MERGE_HEAD, FETCH_HEAD
- SHA-1: a complete or abbreviated SHA-1
- refs/...: a complete reference name
- short-name: a short reference name under {@code refs/heads}, {@code refs/tags}, or {@code refs/remotes} namespace
- tag-NN-gABBREV: output from describe, parsed by treating {@code ABBREV} as an abbreviated SHA-1.
- id^: first parent of commit id, this is the same as {@code id^1}
- id^0: ensure id is a commit
- id^n: n-th parent of commit id
- id~n: n-th historical ancestor of id, by first parent. {@code id~3} is equivalent to {@code id^1^1^1} or {@code id^^^}.
- id:path: Lookup path under tree named by id
- id^{commit}: ensure id is a commit
- id^{tree}: ensure id is a tree
- id^{tag}: ensure id is a tag
- id^{blob}: ensure id is a blob
The following operators are specified by Git conventions, but are not supported by this method:
- ref@{n}: n-th version of ref as given by its reflog
- ref@{time}: value of ref at the designated time
@param revstr A git object references expression @return an ObjectId or null if revstr can't be resolved to any ObjectId @throws AmbiguousObjectException {@code revstr} contains an abbreviated ObjectId and thisrepository contains more than one object which match to the input abbreviation. @throws IncorrectObjectTypeException the id parsed does not meet the type required to finish applying the operators in the expression. @throws RevisionSyntaxException the expression is not supported by this implementation, or does not meet the standard syntax. @throws IOException on serious errors


    // Create new Repository instance, to reread caches and make sure our
    // assumptions are persistent.
    Repository ndb = new FileRepository(db.getDirectory());
    assertEquals(rb2, ndb.resolve("refs/heads/new/name"));
    assertNull(ndb.resolve("refs/heads/b"));
  }


  public void tryRenameWhenLocked(String toLock, String fromName,
      String toName, String headPointsTo) throws IOException {
    // setup

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    assertNotNull(trackingRefUpdate);
    assertEquals(trackingBranch, trackingRefUpdate.getLocalName());
    assertEquals(branch, trackingRefUpdate.getRemoteName());
    assertEquals(commit2.getId(), trackingRefUpdate.getNewObjectId());
    assertEquals(commit2.getId(), db.resolve(trackingBranch));
    assertEquals(commit2.getId(), db2.resolve(branch));
  }


  /**
   * Check that pushes over file protocol lead to appropriate ref-updates.
   *

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      fail("id shouldn't exist locally");
    } catch (MissingObjectException e) {
      // we should get here
    }
    assertEquals(commit2.getId(),
        db2.resolve(commit2.getId().getName() + "^{commit}"));
    assertEquals(commit3.getId(),
        db2.resolve(commit3.getId().getName() + "^{commit}"));
  }
}

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      // we should get here
    }
    assertEquals(commit2.getId(),
        db2.resolve(commit2.getId().getName() + "^{commit}"));
    assertEquals(commit3.getId(),
        db2.resolve(commit3.getId().getName() + "^{commit}"));
  }
}

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  protected RevCommit commitFile(String filename, String contents, String branch) {
    try {
      Git git = new Git(db);
      Repository repo = git.getRepository();
      String originalBranch = repo.getFullBranch();
      boolean empty = repo.resolve(Constants.HEAD) == null;
      if (!empty) {
        if (repo.getRef(branch) == null)
          git.branchCreate().setName(branch).call();
        git.checkout().setName(branch).call();
      }

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    // We expect first commit to appear by id
    assertEquals("42e4e7c5e507e113ebbb7801b16b52cf867b7ce1", advertisedRef
        .getObjectId().name());
    // ..and by name as the bundle created a new ref
    assertEquals("42e4e7c5e507e113ebbb7801b16b52cf867b7ce1", newRepo
        .resolve("refs/heads/firstcommit").name());
  }


  @Test
  public void testWriteHEAD() throws Exception {

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    Repository newRepo = createBareRepository();
    FetchResult fetchResult = fetchFromBundle(newRepo, bundle);
    Ref advertisedRef = fetchResult.getAdvertisedRef("refs/heads/aa");


    assertEquals(db.resolve("a").name(), advertisedRef.getObjectId().name());
    assertEquals(db.resolve("a").name(), newRepo.resolve("refs/heads/aa")
        .name());
    assertNull(newRepo.resolve("refs/heads/a"));


    // Next an incremental bundle
    bundle = makeBundle("refs/heads/cc", db.resolve("c").name(),

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    Ref advertisedRef = fetchResult.getAdvertisedRef("refs/heads/aa");


    assertEquals(db.resolve("a").name(), advertisedRef.getObjectId().name());
    assertEquals(db.resolve("a").name(), newRepo.resolve("refs/heads/aa")
        .name());
    assertNull(newRepo.resolve("refs/heads/a"));


    // Next an incremental bundle
    bundle = makeBundle("refs/heads/cc", db.resolve("c").name(),
        new RevWalk(db).parseCommit(db.resolve("a").toObjectId()));
    fetchResult = fetchFromBundle(newRepo, bundle);

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    bundle = makeBundle("refs/heads/cc", db.resolve("c").name(),
        new RevWalk(db).parseCommit(db.resolve("a").toObjectId()));
    fetchResult = fetchFromBundle(newRepo, bundle);
    advertisedRef = fetchResult.getAdvertisedRef("refs/heads/cc");
    assertEquals(db.resolve("c").name(), advertisedRef.getObjectId().name());
    assertEquals(db.resolve("c").name(), newRepo.resolve("refs/heads/cc")
        .name());
    assertNull(newRepo.resolve("refs/heads/c"));
    assertNull(newRepo.resolve("refs/heads/a")); // still unknown


    try {

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    fetchResult = fetchFromBundle(newRepo, bundle);
    advertisedRef = fetchResult.getAdvertisedRef("refs/heads/cc");
    assertEquals(db.resolve("c").name(), advertisedRef.getObjectId().name());
    assertEquals(db.resolve("c").name(), newRepo.resolve("refs/heads/cc")
        .name());
    assertNull(newRepo.resolve("refs/heads/c"));
    assertNull(newRepo.resolve("refs/heads/a")); // still unknown


    try {
      // Check that we actually needed the first bundle
      Repository newRepo2 = createBareRepository();

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