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FetchType
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1: /**
2: * Copyright (C) 2020 Czech Technical University in Prague
3: *
4: * This program is free software: you can redistribute it and/or modify it under
5: * the terms of the GNU General Public License as published by the Free Software
6: * Foundation, either version 3 of the License, or (at your option) any
7: * later version.
8: *
9: * This program is distributed in the hope that it will be useful, but WITHOUT
10: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
11: * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
12: * details. You should have received a copy of the GNU General Public License
13: * along with this program. If not, see <http://www.gnu.org/licenses/>.
14: */
15: package cz.cvut.kbss.jopa.model.annotations;
16:
17: /**
18: * Defines strategies for fetching data from the database.
19: * <p>
20: * The {@code EAGER} strategy is a requirement on the persistence provider runtime that data must be eagerly fetched.
21: * The {@code LAZY} strategy is a hint to the persistence provider runtime that data should be fetched lazily when it is
22: * first accessed. The implementation is permitted to eagerly fetch data for which the {@code LAZY} strategy hint has
23: * been specified.
24: */
25: public enum FetchType {
26: /**
27: * Defines that data can be lazily fetched.
28: */
29: LAZY,
30: /**
31: * Defines that data must be eagerly fetched.
32: */
33: EAGER
34: }