Method: getParentPath()

1: /**
2: * Copyright (C) 2022 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.query.criteria.expressions;
16:
17: import cz.cvut.kbss.jopa.model.metamodel.Attribute;
18: import cz.cvut.kbss.jopa.model.metamodel.Metamodel;
19: import cz.cvut.kbss.jopa.model.metamodel.SingularAttribute;
20: import cz.cvut.kbss.jopa.model.query.criteria.Path;
21: import cz.cvut.kbss.jopa.query.criteria.PathImpl;
22: import cz.cvut.kbss.jopa.sessions.CriteriaBuilder;
23:
24: public abstract class AbstractPathExpression<X> extends AbstractExpression<X> implements Path<X> {
25:
26: protected AbstractPathExpression pathSource;
27: protected final Metamodel metamodel;
28:
29: public AbstractPathExpression(Class<X> type, AbstractPathExpression pathSource, Metamodel metamodel, CriteriaBuilder cb) {
30: super(type, cb);
31: this.pathSource = pathSource;
32: this.metamodel = metamodel;
33: }
34:
35: public <Y> Path<Y> getAttr(String attributeName) {
36: Attribute attribute = metamodel.entity(type).getAttribute(attributeName);
37: return new PathImpl<>(this.metamodel, this, attribute, this.cb);
38: }
39:
40: public <Y> Path<Y> getAttr(SingularAttribute<? super X, Y> attribute) {
41: return new PathImpl<>(this.metamodel, this, attribute, this.cb);
42: }
43:
44:
45: public Path<?> getParentPath() {
46: return this.pathSource;
47: }
48:
49: }
50:
51: