package com.yami.trading.common.util;
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import java.nio.ByteBuffer;
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import java.util.Arrays;
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import java.util.HashSet;
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import java.util.LinkedHashSet;
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import java.util.UUID;
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import java.util.regex.Pattern;
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public class ApplicationUtil {
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/**
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* 空白正则式
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*/
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private static final Pattern BLANK_REGEX=Pattern.compile("\\s+");
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/**
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* 八字节缓冲
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*/
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private static final ByteBuffer EIGHT_BUFFER = ByteBuffer.allocate(8);
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/**
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* 简单类型
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*/
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private static LinkedHashSet<Class<?>> SIMPLE_CLASSES=new LinkedHashSet<Class<?>>();
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/**
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* 增删改DML操作
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*/
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private static final HashSet<String> DML_OPTIONS=new HashSet<String>(Arrays.asList("DELETE","UPDATE","INSERT"));
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/**
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* 根据当前系统时间获取UUID字串序列
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* @return UUID字串序列
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*/
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public static final String getCurrentTimeUUID(String... prexfixs) {
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EIGHT_BUFFER.clear();
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EIGHT_BUFFER.putLong(System.currentTimeMillis());
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EIGHT_BUFFER.flip();
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byte[] b=new byte[8];
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EIGHT_BUFFER.get(b);
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EIGHT_BUFFER.clear();
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String prefix=(null==prexfixs || 0==prexfixs.length)?"":prexfixs[0];
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prefix=(null==prefix || (prefix=prefix.trim()).isEmpty())?"":prefix;
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return prefix+ UUID.nameUUIDFromBytes(b).toString().replace("-", "");
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}
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}
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