com.dieselpoint.norm.Util Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of norm Show documentation

An extremely lightweight data access layer over JDBC

There is a newer version: 1.1

package com.dieselpoint.norm;

import java.util.List;

public class Util {

	public static String join(String [] strs) {
		StringBuilder buf = new StringBuilder();
		for (int i = 0; i < strs.length; i++) {
			if (i > 0) {
				buf.append(",");
			}
			buf.append(strs[i]);
		}
		return buf.toString();
	}
	
	
	public static String join(List strs) {
		StringBuilder buf = new StringBuilder();
		int len = strs.size();
		for (int i = 0; i < len; i++) {
			if (i > 0) {
				buf.append(",");
			}
			buf.append(strs.get(i));
		}
		return buf.toString();
	}
	
	public static String getQuestionMarks(int count) {
		StringBuilder sb = new StringBuilder(count * 2);
		for (int i = 0; i < count; i++) {
			if (i > 0) {
				sb.append(',');
			}
			sb.append('?');
		}
		return sb.toString();
	}
	
	public static boolean isPrimitiveOrString(Class c) {
		if (c.isPrimitive()) {
			return true;
		} else if (c == Byte.class 
				|| c == Short.class 
				|| c == Integer.class
				|| c == Long.class 
				|| c == Float.class 
				|| c == Double.class
				|| c == Boolean.class 
				|| c == Character.class
				|| c == String.class) {
			return true;
		} else {
			return false;
		}
	}
}