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SBDB::DB#[]=: If set to nil, it will delete item. SBDB::Cursor#each: Integer-keys for Recno and Queue.

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This commit is contained in:
Denis Knauf 2010-02-05 19:08:30 +01:00
parent 8385dd2868
commit ff2e444047
2 changed files with 27 additions and 8 deletions
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20
lib/sbdb/cursor.rb
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@ -12,12 +12,12 @@ module SBDB
include Enumerable
def bdb_object() @cursor end
def close() @cursor.close end
def get( k, v, f) @cursor.get k, v, f end
def get( k, v, f) @cursor.get( k, v, f) end
def count() @cursor.count end
def first( k = nil, v = nil) @cursor.get k, v, FIRST end
def last( k = nil, v = nil) @cursor.get k, v, LAST end
def next( k = nil, v = nil) @cursor.get k, v, NEXT end
def prev( k = nil, v = nil) @cursor.get k, v, PREV end
def first( k = nil, v = nil) get k, v, FIRST end
def last( k = nil, v = nil) get k, v, LAST end
def next( k = nil, v = nil) get k, v, NEXT end
def prev( k = nil, v = nil) get k, v, PREV end
def self.new *p
x = super *p
@ -33,6 +33,12 @@ module SBDB
when Bdb::Db::Cursor then [ref]
else [ref.bdb_object.cursor( nil, 0), ref]
end
if [Recno, Queue].any? {|t| t === @db }
def get k, v, f
l, w = @cursor.get( k, v, f)
l.nil? ? nil : [l.unpack('I')[0], w]
end
end
end
def reverse k = nil, v = nil, &e
@ -42,10 +48,10 @@ module SBDB
def each k = nil, v = nil, f = nil, n = nil
return Enumerator.new( self, :each, k, v, f, n) unless block_given?
n ||= NEXT
e = @cursor.get k, v, f || FIRST
e = get k, v, f || FIRST
return unless e
yield *e
yield *e while e = @cursor.get( k, v, n)
yield *e while e = get( k, v, n)
nil
end
end

15
lib/sbdb/db.rb
View file

@ -9,6 +9,8 @@ module SBDB
QUEUE = Bdb::Db::QUEUE
ARRAY = RECNO = Bdb::Db::RECNO
RDONLY = READLONY = Bdb::DB_RDONLY
CONSUME = Bdb::DB_CONSUME
CONSUME_WAIT = Bdb::DB_CONSUME_WAIT
attr_reader :home
include Enumerable
@ -16,9 +18,16 @@ module SBDB
def sync() @db.sync end
def close( f = nil) @db.close f || 0 end
def []( k) @db.get nil, k.nil? ? nil : k.to_s, nil, 0 end
def []=( k, v) @db.put nil, k.nil? ? nil : k.to_s, v.nil? ? nil : v.to_s, 0 end
def cursor( &e) Cursor.new self, &e end
def []= k, v
if v.nil?
@db.del nil, k.to_s, 0
else
@db.put nil, k.nil? ? nil : k.to_s, v.to_s, 0
end
end
class << self
def new *p, &e
x = super *p
@ -112,5 +121,9 @@ module SBDB
def []= k, v
super [k].pack('I'), v
end
def unshift
get nil, nil, nil, Bdb::DB_CONSUME
end
end
end