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48 lines
1.9 KiB
48 lines
1.9 KiB
// Copyright (c) 2012-present The upper.io/db authors. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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package db
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// Iterator provides methods for iterating over query results.
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type Iterator interface {
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// ResultMapper provides methods to retrieve and map results.
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ResultMapper
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// Scan dumps the current result into the given pointer variable pointers.
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Scan(dest ...interface{}) error
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// NextScan advances the iterator and performs Scan.
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NextScan(dest ...interface{}) error
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// ScanOne advances the iterator, performs Scan and closes the iterator.
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ScanOne(dest ...interface{}) error
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// Next dumps the current element into the given destination, which could be
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// a pointer to either a map or a struct.
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Next(dest ...interface{}) bool
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// Err returns the last error produced by the cursor.
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Err() error
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// Close closes the iterator and frees up the cursor.
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Close() error
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}
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