mirror of https://github.com/apache/cassandra
63 lines
2.3 KiB
Python
63 lines
2.3 KiB
Python
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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class ResultSet(object):
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def __init__(self, rows, keyspace, column_family, decoder):
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self.rows = rows
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self.ks = keyspace
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self.cf = column_family
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self.decoder = decoder
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# We need to try to parse the first row to set the description
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if len(self.rows) > 0:
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self.description, self._first_vals = self.decoder.decode_row(self.ks, self.cf, self.rows[0])
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else:
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self.description, self._first_vals = (None, None)
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def __len__(self):
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return len(self.rows)
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def __getitem__(self, idx):
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if isinstance(idx, int):
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if idx == 0 and self._first_vals:
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return self._first_vals
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self.description, vals = self.decoder.decode_row(self.ks, self.cf, self.rows[idx])
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return vals
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elif isinstance(idx, slice):
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num_rows = len(self.rows)
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results = []
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for i in xrange(idx.start, min(len(self.rows), idx.stop)):
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if i == 0 and self._first_vals:
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vals = self._first_vals
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else:
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self.description, vals = self.decoder.decode_row(self.ks, self.cf, self.rows[i])
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results.append(vals)
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return results
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else:
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raise TypeError
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def __iter__(self):
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idx = 0
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for r in self.rows:
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if idx == 0 and self._first_vals:
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yield self._first_vals
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else:
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self.description, vals = self.decoder.decode_row(self.ks, self.cf, r)
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yield vals
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idx += 1
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