func (r *reader) IndexedGet(rang *IndexedRange) ([]*Row, error) {
if r.cf == "" {
return nil, errors.New("No column family specified")
}
if !r.setWhere {
return nil, errors.New("At least one Where call must be made")
}
if rang == nil || rang.Count <= 0 {
return make([]*Row, 0), nil
}
ic := r.buildIndexClause(rang)
cp := r.buildColumnParent()
sp := r.buildPredicate()
var ret []*cassandra.KeySlice
err := r.pool.run(func(c *connection) *transactionError {
var err error
ret, err = c.client.GetIndexedSlices(
cp, ic, sp, cassandra.ConsistencyLevel(r.consistencyLevel))
return &transactionError{err}
})
if err != nil {
return nil, err
}
return rowsFromTListKeySlice(ret), nil
}
func (r *reader) RangeGet(rang *Range) ([]*Row, error) {
if r.cf == "" {
return nil, errors.New("No column family specified")
}
if rang == nil || rang.Count <= 0 {
return make([]*Row, 0), nil
}
kr := r.buildKeyRange(rang)
cp := r.buildColumnParent()
sp := r.buildPredicate()
var ret []*cassandra.KeySlice
err := r.pool.run(func(c *connection) *transactionError {
var err error
ret, err = c.client.GetRangeSlices(
cp, sp, kr, cassandra.ConsistencyLevel(r.consistencyLevel))
return &transactionError{err}
})
if err != nil {
return nil, err
}
return rowsFromTListKeySlice(ret), nil
}
func (r *reader) MultiCount(keys [][]byte) ([]*RowColumnCount, error) {
if r.cf == "" {
return nil, errors.New("No column family specified")
}
if len(keys) <= 0 {
return make([]*RowColumnCount, 0), nil
}
cp := r.buildColumnParent()
sp := r.buildPredicate()
tk := keys
var ret map[string]int32
err := r.pool.run(func(c *connection) *transactionError {
var err error
ret, err = c.client.MultigetCount(
tk, cp, sp, cassandra.ConsistencyLevel(r.consistencyLevel))
return &transactionError{err}
})
if err != nil {
return nil, err
}
return rowsColumnCountFromTMap(ret), nil
}
func (w *writer) Run() error {
toRun := func(c *connection) *transactionError {
err := c.client.BatchMutate(
w.writers, cassandra.ConsistencyLevel(w.consistencyLevel))
return &transactionError{err}
}
if w.usedCounters {
return w.pool.runWithRetries(toRun, 1)
}
return w.pool.run(toRun)
}
func (r *reader) Count(key []byte) (int, error) {
if r.cf == "" {
return 0, errors.New("No column family specified")
}
cp := r.buildColumnParent()
sp := r.buildPredicate()
var ret int32
err := r.pool.run(func(c *connection) *transactionError {
var err error
ret, err = c.client.GetCount(
key, cp, sp, cassandra.ConsistencyLevel(r.consistencyLevel))
return &transactionError{err}
})
if err != nil {
return 0, err
}
return int(ret), nil
}
func (r *reader) Get(key []byte) (*Row, error) {
if r.cf == "" {
return nil, errors.New("No column family specified")
}
cp := r.buildColumnParent()
sp := r.buildPredicate()
var ret []*cassandra.ColumnOrSuperColumn
err := r.pool.run(func(c *connection) *transactionError {
var err error
ret, err = c.client.GetSlice(
key, cp, sp, cassandra.ConsistencyLevel(r.consistencyLevel))
return &transactionError{err}
})
if err != nil {
return nil, err
}
return rowFromTListColumns(key, ret), nil
}