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1: /**
2: * Copyright (C) 2016 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 polymorphic loading strategy options for the {@link Inheritance} annotation.
19: * <p>
20: * The strategies are described in <a href="https://github.com/kbss-cvut/jopa/issues/1">https://github.com/kbss-cvut/jopa/issues/1</a>.
21: */
22: public enum InheritanceType {
23:
24: /**
25: * Instances are loading in two steps. First, types are loaded to determine which resulting type should be used,
26: * then the actual entity is loaded.
27: */
28: TWO_STEP,
29: /**
30: * An attempt to load an entity is made. If the entity is abstract or the corresponding type is missing, actual type
31: * is determined from the loaded types and the missing attributes are loaded.
32: */
33: TRY_FIRST
34: }