com.github.brunodutr.persistence.criteria.service.CriteriaProcessorGreaterThan Maven / Gradle / Ivy
package com.github.brunodutr.persistence.criteria.service;
import java.lang.reflect.Field;
import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.Expression;
import javax.persistence.criteria.Predicate;
import javax.persistence.criteria.Root;
import com.github.brunodutr.persistence.criteria.annotations.CriteriaGreaterThan;
class CriteriaProcessorGreaterThan implements ICriteriaProcessor {
@Override
@SuppressWarnings({ "unchecked", "rawtypes" })
public Predicate process(CriteriaBuilder criteriaBuilder, Root root, Object object, Field field) throws Exception {
return processAnnotation(root, object, field, (path, value) -> {
if(!(value instanceof Comparable)) {
throw new UnsupportedOperationException("CriteriaProcessorGreaterThan funciona apenas para tipos que extendem java.lang.Comparable");
}
Expression expression = (Expression) path;
Comparable comparable = (Comparable) value;
CriteriaGreaterThan criteriaGreaterThan = field.getAnnotation(CriteriaGreaterThan.class);
if(criteriaGreaterThan.equal()) {
return criteriaBuilder.greaterThanOrEqualTo(expression, comparable);
} else {
return criteriaBuilder.greaterThan(expression, comparable);
}
});
}
}