diff options
Diffstat (limited to 'Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/iterator/indexed_iter.go')
-rw-r--r-- | Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/iterator/indexed_iter.go | 73 |
1 files changed, 47 insertions, 26 deletions
diff --git a/Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/iterator/indexed_iter.go b/Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/iterator/indexed_iter.go index 1e99a2bf6..939adbb93 100644 --- a/Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/iterator/indexed_iter.go +++ b/Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/iterator/indexed_iter.go @@ -7,6 +7,7 @@ package iterator import ( + "github.com/syndtr/goleveldb/leveldb/errors" "github.com/syndtr/goleveldb/leveldb/util" ) @@ -22,13 +23,13 @@ type IteratorIndexer interface { type indexedIterator struct { util.BasicReleaser - index IteratorIndexer - strict bool - strictGet bool + index IteratorIndexer + strict bool - data Iterator - err error - errf func(err error) + data Iterator + err error + errf func(err error) + closed bool } func (i *indexedIterator) setData() { @@ -36,11 +37,6 @@ func (i *indexedIterator) setData() { i.data.Release() } i.data = i.index.Get() - if i.strictGet { - if err := i.data.Error(); err != nil { - i.err = err - } - } } func (i *indexedIterator) clearData() { @@ -50,14 +46,21 @@ func (i *indexedIterator) clearData() { i.data = nil } -func (i *indexedIterator) dataErr() bool { - if i.errf != nil { - if err := i.data.Error(); err != nil { +func (i *indexedIterator) indexErr() { + if err := i.index.Error(); err != nil { + if i.errf != nil { i.errf(err) } + i.err = err } - if i.strict { - if err := i.data.Error(); err != nil { +} + +func (i *indexedIterator) dataErr() bool { + if err := i.data.Error(); err != nil { + if i.errf != nil { + i.errf(err) + } + if i.strict || !errors.IsCorrupted(err) { i.err = err return true } @@ -72,9 +75,13 @@ func (i *indexedIterator) Valid() bool { func (i *indexedIterator) First() bool { if i.err != nil { return false + } else if i.Released() { + i.err = ErrIterReleased + return false } if !i.index.First() { + i.indexErr() i.clearData() return false } @@ -85,9 +92,13 @@ func (i *indexedIterator) First() bool { func (i *indexedIterator) Last() bool { if i.err != nil { return false + } else if i.Released() { + i.err = ErrIterReleased + return false } if !i.index.Last() { + i.indexErr() i.clearData() return false } @@ -105,9 +116,13 @@ func (i *indexedIterator) Last() bool { func (i *indexedIterator) Seek(key []byte) bool { if i.err != nil { return false + } else if i.Released() { + i.err = ErrIterReleased + return false } if !i.index.Seek(key) { + i.indexErr() i.clearData() return false } @@ -125,6 +140,9 @@ func (i *indexedIterator) Seek(key []byte) bool { func (i *indexedIterator) Next() bool { if i.err != nil { return false + } else if i.Released() { + i.err = ErrIterReleased + return false } switch { @@ -136,6 +154,7 @@ func (i *indexedIterator) Next() bool { fallthrough case i.data == nil: if !i.index.Next() { + i.indexErr() return false } i.setData() @@ -147,6 +166,9 @@ func (i *indexedIterator) Next() bool { func (i *indexedIterator) Prev() bool { if i.err != nil { return false + } else if i.Released() { + i.err = ErrIterReleased + return false } switch { @@ -158,6 +180,7 @@ func (i *indexedIterator) Prev() bool { fallthrough case i.data == nil: if !i.index.Prev() { + i.indexErr() return false } i.setData() @@ -206,16 +229,14 @@ func (i *indexedIterator) SetErrorCallback(f func(err error)) { i.errf = f } -// NewIndexedIterator returns an indexed iterator. An index is iterator -// that returns another iterator, a data iterator. A data iterator is the +// NewIndexedIterator returns an 'indexed iterator'. An index is iterator +// that returns another iterator, a 'data iterator'. A 'data iterator' is the // iterator that contains actual key/value pairs. // -// If strict is true then error yield by data iterator will halt the indexed -// iterator, on contrary if strict is false then the indexed iterator will -// ignore those error and move on to the next index. If strictGet is true and -// index.Get() yield an 'error iterator' then the indexed iterator will be halted. -// An 'error iterator' is iterator which its Error() method always return non-nil -// even before any 'seeks method' is called. -func NewIndexedIterator(index IteratorIndexer, strict, strictGet bool) Iterator { - return &indexedIterator{index: index, strict: strict, strictGet: strictGet} +// If strict is true the any 'corruption errors' (i.e errors.IsCorrupted(err) == true) +// won't be ignored and will halt 'indexed iterator', otherwise the iterator will +// continue to the next 'data iterator'. Corruption on 'index iterator' will not be +// ignored and will halt the iterator. +func NewIndexedIterator(index IteratorIndexer, strict bool) Iterator { + return &indexedIterator{index: index, strict: strict} } |