Package: Path

Path

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1: /*
2: * JOPA
3: * Copyright (C) 2024 Czech Technical University in Prague
4: *
5: * This library is free software; you can redistribute it and/or
6: * modify it under the terms of the GNU Lesser General Public
7: * License as published by the Free Software Foundation; either
8: * version 3.0 of the License, or (at your option) any later version.
9: *
10: * This library is distributed in the hope that it will be useful,
11: * but WITHOUT ANY WARRANTY; without even the implied warranty of
12: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13: * Lesser General Public License for more details.
14: *
15: * You should have received a copy of the GNU Lesser General Public
16: * License along with this library.
17: */
18: package cz.cvut.kbss.jopa.model.query.criteria;
19:
20: import cz.cvut.kbss.jopa.model.metamodel.SingularAttribute;
21:
22: public interface Path<X> extends Expression<X> {
23:
24: /**
25: * Create a path corresponding to the referenced attribute.
26: *
27: * @param attributeName name of the attribute
28: * @return path corresponding to the referenced attribute
29: * @throws IllegalArgumentException if attribute of the given name does not otherwise exist
30: */
31: <Y> Path<Y> getAttr(String attributeName);
32:
33: /**
34: * Create a path corresponding to the referenced single-valued attribute.
35: *
36: * @param attribute single-valued attribute
37: * @return path corresponding to the referenced attribute
38: */
39: <Y> Path<Y> getAttr(SingularAttribute<? super X, Y> attribute);
40:
41: /**
42: * Return the parent "node" in the path or null if no parent.
43: *
44: * @return parent
45: */
46: Path<?> getParentPath();
47: }