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Moved over to the new live query notification API. 

Fixed a stupid bug in Query::LiveUpdate() that prevented it to work correctly before:
instead of the file name, the attribute value was passed to send_notification().


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@11225 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2005-02-02 17:04:58 +00:00
parent f0c7cb8c12
commit 0d3a7fe9b1
1 changed files with 38 additions and 20 deletions
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58
src/add-ons/kernel/file_systems/bfs/Query.cpp
View File

@ -4,7 +4,7 @@
* by J. Kercheval, and on code written by Kenneth Almquist, though
* it shares no code.
*
* Copyright 2001-2004, Axel Dörfler, axeld@pinc-software.de.
* Copyright 2001-2005, Axel Dörfler, axeld@pinc-software.de.
* This file may be used under the terms of the MIT License.
*/
@ -1573,29 +1573,47 @@ Query::LiveUpdate(Inode *inode, const char *attribute, int32 type, const uint8 *
status_t oldStatus = fExpression->Root()->Match(inode, attribute, type, oldKey, oldLength);
status_t newStatus = fExpression->Root()->Match(inode, attribute, type, newKey, newLength);
int32 op;
if (oldStatus == MATCH_OK && newStatus == MATCH_OK) {
// only send out a notification if the name was changed
const char *name = NULL;
bool entryCreated;
if (oldStatus != MATCH_OK) {
if (newStatus != MATCH_OK) {
// nothing has changed
return;
}
entryCreated = true;
} else if (newStatus != MATCH_OK) {
// entry got removed
entryCreated = false;
} else {
// the entry stays in the query - only notify in case the name of the inode was changed
if (oldKey == NULL || strcmp(attribute, "name"))
return;
send_notification(fPort, fToken, B_QUERY_UPDATE, B_ENTRY_REMOVED, fVolume->ID(), 0,
fVolume->ToVnode(inode->Parent()), 0, inode->ID(), (const char *)oldKey);
op = B_ENTRY_CREATED;
} else if (oldStatus != MATCH_OK && newStatus != MATCH_OK) {
// nothing has changed
return;
} else if (oldStatus == MATCH_OK && newStatus != MATCH_OK)
op = B_ENTRY_REMOVED;
else
op = B_ENTRY_CREATED;
notify_query_entry_removed(fPort, fToken, fVolume->ID(),
fVolume->ToVnode(inode->Parent()), (const char *)oldKey, inode->ID());
name = (const char *)newKey;
entryCreated = true;
}
// if "value" is NULL, send_notification() crashes...
const char *value = (const char *)newKey;
if (type != B_STRING_TYPE || value == NULL)
value = "";
// we may need to get the name of the inode
send_notification(fPort, fToken, B_QUERY_UPDATE, op, fVolume->ID(), 0,
fVolume->ToVnode(inode->Parent()), 0, inode->ID(), value);
char nameBuffer[B_FILE_NAME_LENGTH];
if (name == NULL) {
if (inode->GetName(nameBuffer) != B_OK)
nameBuffer[0] = '\0';
name = nameBuffer;
}
// notify query listeners
if (entryCreated) {
notify_query_entry_created(fPort, fToken, fVolume->ID(),
fVolume->ToVnode(inode->Parent()), name, inode->ID());
} else {
notify_query_entry_removed(fPort, fToken, fVolume->ID(),
fVolume->ToVnode(inode->Parent()), name, inode->ID());
}
}