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Easiest solution to save and query JPA entities

There is a newer version: 3.2.4

package br.eti.clairton.repository;

import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.Expression;
import javax.persistence.criteria.Predicate;

public class StartsWith implements Comparator {
	private static final long serialVersionUID = 1L;

	@Override
	public Predicate build(final CriteriaBuilder cb, final Expression x, final Object y) {
		@SuppressWarnings("unchecked")
		final Expression s = (Expression) x;
		return cb.like(cb.lower(s), y.toString().toLowerCase() + "%");
	}

	@Override
	public String toString() {
		return "^";
	}
}