Package com.google.gerrit.server.edit.tree

Class TreeCreator

java.lang.Object

com.google.gerrit.server.edit.tree.TreeCreator

public class TreeCreator
extends Object

A creator for a new Git tree. To create the new tree, the tree of another commit is taken as a basis and modified. Alternatively, an empty tree can serve as base.

Method Summary

Modifier and Type	Method	Description
void	addTreeModifications(List<TreeModification> treeModifications)	Apply modifications to the tree which is taken as a basis.
static TreeCreator	basedOn(org.eclipse.jgit.revwalk.RevCommit baseCommit)
static TreeCreator	basedOn(org.eclipse.jgit.revwalk.RevCommit baseCommit, org.eclipse.jgit.lib.ObjectInserter objectInserter, org.eclipse.jgit.lib.ObjectReader objectReader)
static TreeCreator	basedOnEmptyTree()
static TreeCreator	basedOnTree(org.eclipse.jgit.lib.ObjectId baseTreeId, com.google.common.collect.ImmutableList<? extends org.eclipse.jgit.lib.ObjectId> baseParents)
org.eclipse.jgit.lib.ObjectId	createNewTreeAndGetId(org.eclipse.jgit.lib.Repository repository)	Creates the new tree.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

basedOn

public static TreeCreator basedOn(org.eclipse.jgit.revwalk.RevCommit baseCommit)

basedOn

public static TreeCreator basedOn(org.eclipse.jgit.revwalk.RevCommit baseCommit,
 org.eclipse.jgit.lib.ObjectInserter objectInserter,
 org.eclipse.jgit.lib.ObjectReader objectReader)

basedOnTree

public static TreeCreator basedOnTree(org.eclipse.jgit.lib.ObjectId baseTreeId,
 com.google.common.collect.ImmutableList<? extends org.eclipse.jgit.lib.ObjectId> baseParents)

basedOnEmptyTree

public static TreeCreator basedOnEmptyTree()

addTreeModifications

public void addTreeModifications(List<TreeModification> treeModifications)

Apply modifications to the tree which is taken as a basis. If this method is called multiple times, the modifications are applied subsequently in exactly the order they were provided (though JGit applies some internal optimizations which involve sorting, too).

Beware: All provided TreeModifications (even from previous calls of this method) must touch different file paths!

Parameters:

treeModifications - modifications which should be applied to the base tree

createNewTreeAndGetId

public org.eclipse.jgit.lib.ObjectId createNewTreeAndGetId(org.eclipse.jgit.lib.Repository repository)
                                                    throws IOException

Creates the new tree. When this method is called, the specified base tree is read from the repository, the specified modifications are applied, and the resulting tree is written to the object store of the repository.

Parameters:

repository - the affected Git repository

Returns:

the ObjectId of the created tree

Throws:

IOException - if problems arise when accessing the repository