Method: getOperator()

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;
16:
17: import cz.cvut.kbss.jopa.model.query.criteria.Expression;
18: import cz.cvut.kbss.jopa.model.query.criteria.Predicate;
19: import cz.cvut.kbss.jopa.query.criteria.expressions.AbstractExpression;
20: import cz.cvut.kbss.jopa.sessions.CriteriaBuilder;
21:
22: import java.util.List;
23:
24: public abstract class AbstractPredicate extends AbstractExpression<Boolean> implements Predicate {
25:
26: protected BooleanOperator booleanOperator;
27:
28: public AbstractPredicate(BooleanOperator booleanOperator, CriteriaBuilder cb) {
29: super(Boolean.class, cb);
30: this.booleanOperator = booleanOperator;
31: }
32:
33: @Override
34: public abstract List<Expression<Boolean>> getExpressions();
35:
36: @Override
37: public BooleanOperator getOperator() {
38: return this.booleanOperator;
39: }
40:
41: @Override
42: public abstract void setExpressionToQuery(StringBuilder query, CriteriaParameterFiller parameterFiller);
43:
44: protected void negateOperator() {
45: if (booleanOperator.equals(BooleanOperator.AND)) {
46: booleanOperator = BooleanOperator.OR;
47: } else {
48: booleanOperator = BooleanOperator.AND;
49: }
50: }
51: }