org.apache.jackrabbit.oak.spi.commit

Interface CommitHook

All Known Subinterfaces:

PostValidationHook

All Known Implementing Classes:

CompositeHook, EditorHook, EmptyHook, ResetCommitAttributeHook

public interface CommitHook

Extension point for validating and modifying content changes. Available commit hooks are called in sequence to process incoming content changes before they get persisted and shared with other clients.

A commit hook can throw a CommitFailedException for a particular change to prevent it from being persisted, or it can modify the changes for example to update an in-content index or to add auto-generated content.

Note that instead of implementing this interface directly, most commit editors and validators are better expressed as implementations of the more specific extension interfaces defined in this package.

See Also:

The commit hook mechanism

Method Summary

Modifier and Type	Method and Description
NodeState	processCommit(NodeState before, NodeState after, CommitInfo info) Validates and/or modifies the given content change before it gets persisted.

Method Detail

processCommit

NodeState processCommit(NodeState before,
                        NodeState after,
                        CommitInfo info)
                 throws CommitFailedException

Validates and/or modifies the given content change before it gets persisted.

Parameters:

before - content tree before the commit

after - content tree prepared for the commit

info - metadata associated with this commit

Returns:

content tree to be committed

Throws:

CommitFailedException - if the commit should be rejected