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ParameterExpressionImpl.java
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ParameterExpressionImpl.java
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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.CriteriaFactory;
import java.util.Objects;
public class ParameterExpressionImpl<T> extends AbstractExpression<T> implements ParameterExpression<T> {
private String name;
public ParameterExpressionImpl(Class<T> type, String name, CriteriaFactory factory) {
super(type, factory);
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());
}
}