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ParameterExpressionImpl.java
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ParameterExpressionImpl.java
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/**
* Copyright (C) 2022 Czech Technical University in Prague
*
* This program is free software: you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details. You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package cz.cvut.kbss.jopa.query.criteria.expressions;
import cz.cvut.kbss.jopa.model.query.Parameter;
import cz.cvut.kbss.jopa.model.query.criteria.ParameterExpression;
import cz.cvut.kbss.jopa.query.criteria.CriteriaParameterFiller;
import cz.cvut.kbss.jopa.sessions.CriteriaBuilder;
import java.util.Objects;
public class ParameterExpressionImpl<T> extends AbstractExpression<T> implements ParameterExpression<T> {
private String name;
public ParameterExpressionImpl(Class<T> type, String name, CriteriaBuilder cb) {
super(type, cb);
this.name = name;
}
public void setNameIfUnnamed(String name) {
if (this.name == null) this.name = name;
}
@Override
public String getName() {
return name;
}
@Override
public Integer getPosition() {
return null;
}
@Override
public Class<T> getParameterType() {
return type;
}
@Override
public void setExpressionToQuery(StringBuilder query, CriteriaParameterFiller parameterFiller) {
query.append(parameterFiller.registerParameter(this));
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || !Parameter.class.isAssignableFrom(o.getClass())) {
return false;
}
Parameter<?> that = (Parameter<?>) o;
return Objects.equals(getName(), that.getName());
}
@Override
public int hashCode() {
return Objects.hash(getName(), getPosition());
}
}