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Add a contactExists() method to the contactManager

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This requires exposing the `containsContact()` method to the `DatabaseComponent`
and is needed for finding out efficiently whether a contact already exists.
This commit is contained in:
Torsten Grote
2016-02-18 14:46:43 -02:00
parent e2d64e0a8c
commit 5bde14c694
4 changed files with 44 additions and 0 deletions
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20
briar-core/src/org/briarproject/contact/ContactManagerImpl.java
View File

@@ -125,6 +125,26 @@ class ContactManagerImpl implements ContactManager, RemoveIdentityHook {
}
}
@Override
public boolean contactExists(Transaction txn, AuthorId remoteAuthorID,
AuthorId localAuthorId) throws DbException {
return db.containsContact(txn, remoteAuthorID, localAuthorId);
}
@Override
public boolean contactExists(AuthorId remoteAuthorID,
AuthorId localAuthorId) throws DbException {
boolean exists = false;
Transaction txn = db.startTransaction(true);
try {
exists = contactExists(txn, remoteAuthorID, localAuthorId);
txn.setComplete();
} finally {
db.endTransaction(txn);
}
return exists;
}
private void removeContact(Transaction txn, ContactId c)
throws DbException {
Contact contact = db.getContact(txn, c);

8
briar-core/src/org/briarproject/db/DatabaseComponentImpl.java
View File

@@ -342,6 +342,14 @@ class DatabaseComponentImpl<T> implements DatabaseComponent {
return db.getContacts(txn, a);
}
public boolean containsContact(Transaction transaction, AuthorId remote,
AuthorId local) throws DbException {
T txn = unbox(transaction);
if (!db.containsLocalAuthor(txn, local))
throw new NoSuchLocalAuthorException();
return db.containsContact(txn, remote, local);
}
public DeviceId getDeviceId(Transaction transaction) throws DbException {
T txn = unbox(transaction);
return db.getDeviceId(txn);