QueryUtils.java

package com.github.geequery.springdata.repository.query;

import static java.util.regex.Pattern.CASE_INSENSITIVE;

import java.util.regex.Pattern;

import org.springframework.util.StringUtils;

import com.github.geequery.springdata.annotation.IgnoreIf;

public class QueryUtils {
	static boolean isIgnore(IgnoreIf ignoreIf, Object obj) {
		switch (ignoreIf.value()) {
		case Empty:
			return obj == null || String.valueOf(obj).length() == 0;
		case Negative:
			if (obj instanceof Number) {
				return ((Number) obj).longValue() < 0;
			} else {
				throw new IllegalArgumentException("can not calcuate is 'NEGATIVE' on parameter which is not a number.");
			}
		case Null:
			return obj == null;
		case Zero:
			if (obj instanceof Number) {
				return ((Number) obj).longValue() == 0;
			} else {
				throw new IllegalArgumentException("can not calcuate is 'IS_ZERO' on parameter which is not a number.");
			}
		case ZeroOrNagative:
			if (obj instanceof Number) {
				return ((Number) obj).longValue() <= 0;
			} else {
				throw new IllegalArgumentException("can not calcuate is 'IS_ZERO_OR_NEGATIVE' on parameter which is not a number.");
			}
		default:
			throw new IllegalArgumentException("Unknown ignoreIf type:" + ignoreIf.value());
		}
	}

	public static boolean hasNamedParameter(String query) {
		return StringUtils.hasText(query) && NAMED_PARAMETER.matcher(query).find();
	}

	private static final String IDENTIFIER = "[\\p{Lu}\\P{InBASIC_LATIN}\\p{Alnum}._$]+";
	private static final Pattern NAMED_PARAMETER = Pattern.compile(":" + IDENTIFIER + "|\\#" + IDENTIFIER, CASE_INSENSITIVE);
}