Esempio n. 1
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func Find(index core.Uint32Index, buffer dbio.DataBuffer, id uint32) (*core.Record, error) {
	rowID, err := index.Find(id)
	if err != nil {
		return nil, err
	}

	return core.NewRecordLoader(buffer).Load(id, rowID)
}
Esempio n. 2
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func Update(index core.Uint32Index, buffer dbio.DataBuffer, record *core.Record) error {
	rowID, err := index.Find(record.ID)
	if err != nil {
		return err
	}

	allocator := core.NewRecordAllocator(buffer)
	if err = allocator.Update(rowID, record); err != nil {
		return err
	}

	return nil
}
Esempio n. 3
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func Delete(index core.Uint32Index, buffer dbio.DataBuffer, id uint32) error {
	rowID, err := index.Find(id)
	if err != nil {
		return err
	}

	allocator := core.NewRecordAllocator(buffer)
	if err := allocator.Remove(rowID); err != nil {
		return err
	}

	return index.Delete(id)
}
func assertIndexCanInsertAndFind(t *testing.T, index core.Uint32Index, key int, rowID core.RowID) (core.Uint32Key, core.RowID) {
	insertOnIndex(t, index, key, rowID)
	rowIDFound, err := index.Find(uint32(key))
	if err != nil {
		t.Fatalf("Error when trying to find rowID with key=%+v: %s", key, err)
	}
	if rowIDFound == (core.RowID{}) {
		t.Errorf("Could not retrieve %d from index right after inserting it", key)
	}
	if rowIDFound != rowID {
		t.Errorf("Invalid value returned from the index: %+v", rowIDFound)
	}
	return core.Uint32Key(key), rowID
}
Esempio n. 5
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func Insert(index core.Uint32Index, buffer dbio.DataBuffer, record *core.Record) error {
	cb := core.NewDataBlockRepository(buffer).ControlBlock()
	buffer.MarkAsDirty(cb.DataBlockID())

	rowID, _ := index.Find(record.ID)
	if rowID != (core.RowID{}) {
		return fmt.Errorf("Key already exists: %d", record.ID)
	}

	allocator := core.NewRecordAllocator(buffer)
	rowID, err := allocator.Add(record)
	if err != nil {
		return err
	}

	return index.Insert(record.ID, rowID)
}
func assertIndexCantFindByKey(t *testing.T, index core.Uint32Index, key int) {
	if _, err := index.Find(uint32(key)); err == nil {
		t.Error("Did not remove key from index")
	}
}