com.github.edgar615.util.validation.LongRule Maven / Gradle / Ivy
package com.github.edgar615.util.validation;
import com.google.common.base.MoreObjects;
import com.google.common.collect.Lists;
import java.util.List;
/**
* 校验是否是long.
*
* 只校验String类型的值，其他类型默认为合法.
*
* @author Edgar Date 2016/1/6
*/
class LongRule implements Rule {
private static final String KEY = "long";
private static final String TRUE = "true";
private LongRule() {
}
static Rule create() {
return new LongRule();
}
@Override
public String message() {
return "Long Required";
}
@Override
public boolean isValid(Object property) {
if (property == null) {
return true;
}
if (property instanceof Long) {
return true;
}
if (property instanceof Integer) {
return true;
}
if (property instanceof Short) {
return true;
}
if (property instanceof Byte) {
return true;
}
if (property != null && (property instanceof String)) {
String str = String.class.cast(property);
try {
Long.parseLong(str);
return true;
} catch (NumberFormatException e) {
return false;
}
}
return false;
}
@Override
public String toString() {
return MoreObjects.toStringHelper("LongRule")
.toString();
}
static class Parser implements RuleParser {
@Override
public Rule parse(List keyAndValue) {
String key = keyAndValue.get(0);
if (!KEY.equals(key)) {
return null;
}
if (keyAndValue.size() == 1) {
return new LongRule();
}
if (TRUE.equalsIgnoreCase(keyAndValue.get(1))) {
return new LongRule();
}
return null;
}
@Override
public List toParsableString(Rule rule) {
if (rule instanceof LongRule) {
return Lists.newArrayList(KEY);
}
return Lists.newArrayList();
}
}
}