Spring Data – Multi-column searches

Here is sample of such Specification for User:

public static Specification<User> containsTextInName(String text) {
    if (!text.contains("%")) {
        text = "%" + text + "%";
    }
    String finalText = text;
    return (root, query, builder) -> builder.or(
            builder.like(root.get("lastname"), finalText),
            builder.like(root.get("firstname"), finalText)
    );
}

or even more customizable implementation:

public static Specification<User> containsTextInAttributes(String text, List<String> attributes) {
    if (!text.contains("%")) {
        text = "%" + text + "%";
    }
    String finalText = text;
    return (root, query, builder) -> builder.or(root.getModel().getDeclaredSingularAttributes().stream()
            .filter(a -> attributes.contains(a.getName()))
            .map(a -> builder.like(root.get(a.getName()), finalText))
            .toArray(Predicate[]::new)
    );
}

public static Specification<User> containsTextInName(String text) {
    return containsTextInAttributes(text, Arrays.asList("lastname", "firstname"));
}

Usage:

userRepository.findAll(Specifications.where(UserSpecifications.containsTextInName("irs")))