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added method to iterate trough all items

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This commit is contained in:
skilion 2015-09-07 18:33:16 +02:00
parent 20dbc9795c
commit c08706cbf8
1 changed files with 34 additions and 1 deletions
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35
src/cache.d
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@ -26,6 +26,7 @@ struct ItemCache
{
Database db;
Statement insertItemStmt;
Statement selectItemsStmt;
Statement selectItemByIdStmt;
Statement selectItemByPathStmt;
@ -45,6 +46,7 @@ struct ItemCache
)");
db.exec("CREATE UNIQUE INDEX IF NOT EXISTS path_idx ON item (path)");
insertItemStmt = db.prepare("INSERT OR REPLACE INTO item (id, path, name, type, eTag, cTag, mtime, parentId, crc32) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)");
selectItemsStmt = db.prepare("SELECT id, path, name, type, eTag, cTag, mtime, parentId, crc32 FROM item ORDER BY path DESC");
selectItemByIdStmt = db.prepare("SELECT id, path, name, type, eTag, cTag, mtime, parentId, crc32 FROM item WHERE id = ?");
selectItemByPathStmt = db.prepare("SELECT id, path, name, type, eTag, cTag, mtime, parentId, crc32 FROM item WHERE path = ?");
}
@ -70,6 +72,37 @@ struct ItemCache
}
}
// returns a range that go trough all items
auto selectAll()
{
struct ItemRange
{
Statement.Result result;
this(Statement.Result result)
{
this.result = result;
}
@property bool empty()
{
return result.empty();
}
@property Item front()
{
return buildItem(result);
}
void popFront()
{
result.popFront();
}
}
return ItemRange(selectItemsStmt.exec());
}
bool selectById(const(char)[] id, out Item item)
{
selectItemByIdStmt.bind(1, id);
@ -126,7 +159,7 @@ struct ItemCache
return false;
}
private Item buildItem(Statement.Result result)
private static Item buildItem(Statement.Result result)
{
assert(!result.empty && result.front.length == 9);
Item item = {