plough
6 years ago
6 changed files with 269 additions and 41 deletions
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package com.fr.design.mainframe.template.info; |
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import com.fr.general.ComparatorUtils; |
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import com.fr.log.FineLoggerFactory; |
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import com.fr.stable.StringUtils; |
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import com.fr.stable.xml.XMLPrintWriter; |
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import com.fr.stable.xml.XMLReadable; |
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import com.fr.stable.xml.XMLWriter; |
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import com.fr.stable.xml.XMLableReader; |
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import java.text.ParseException; |
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import java.text.SimpleDateFormat; |
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import java.util.Calendar; |
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import java.util.Date; |
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import java.util.concurrent.TimeUnit; |
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/** |
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* 管理打开设计器的日期记录 |
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* Created by plough on 2019/4/19. |
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*/ |
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class DesignerOpenHistory implements XMLReadable, XMLWriter { |
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static final String XML_TAG = "DesignerOpenHistory"; |
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private static DesignerOpenHistory singleton; |
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private static final String SPLITTER = ","; |
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private static final int LENGTH = 3; // 保留最近 3 次的记录
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// 最近的日期是 history[0]，最早的日期是 history[LENGTH-1]
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private String[] history = new String[LENGTH]; |
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private DesignerOpenHistory() { |
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for (int i = 0; i < LENGTH; i++) { |
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history[i] = StringUtils.EMPTY; |
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} |
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} |
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static DesignerOpenHistory getInstance() { |
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if (singleton == null) { |
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singleton = new DesignerOpenHistory(); |
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} |
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return singleton; |
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} |
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void update() { |
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String today = getToday(); |
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if (ComparatorUtils.equals(history[0], today)) { |
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return; |
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} |
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shiftByOne(); |
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history[0] = today; |
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} |
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/** |
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* 获取历史记录中囊括的日子数。即最早的历史记录 history[LENGTH - 1]，到最晚的记录 history[0] 之间的时间跨度 |
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*/ |
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int getHistorySpanDayCount() { |
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); |
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try { |
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Date earliestDate = sdf.parse(getEarliestDate()); |
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Date latestDate = sdf.parse(history[0]); |
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long diffInMillies = latestDate.getTime() - earliestDate.getTime(); |
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return (int)TimeUnit.DAYS.convert(diffInMillies,TimeUnit.MILLISECONDS) + 1; |
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} catch (ParseException e) { |
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FineLoggerFactory.getLogger().error(e.getMessage(), e); |
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} |
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return 1; |
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} |
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/** |
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* 今天是否已经打开过设计器 |
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*/ |
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boolean hasOpenedToday() { |
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String today = getToday(); |
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return ComparatorUtils.equals(today, history[0]); |
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} |
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private String getEarliestDate() { |
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for (int i = LENGTH - 1; i >= 0; i--) { |
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if (StringUtils.isNotEmpty(history[i])) { |
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return history[i]; |
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} |
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} |
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throw new AssertionError("Designer open history is empty!"); |
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} |
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private void shiftByOne() { |
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for (int i = LENGTH - 1; i > 0; i--) { |
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history[i] = history[i-1]; |
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} |
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} |
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private String getToday() { |
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return new SimpleDateFormat("yyyy-MM-dd").format(Calendar.getInstance().getTime()); |
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} |
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@Override |
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public String toString() { |
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return StringUtils.join(SPLITTER, history); |
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} |
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private void parseString(String s) { |
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String[] arr = s.split(SPLITTER); |
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System.arraycopy(arr, 0, history, 0, arr.length); |
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} |
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@Override |
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public void readXML(XMLableReader reader) { |
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if (XML_TAG.equals(reader.getTagName())) { |
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parseString(reader.getElementValue()); |
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} |
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} |
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@Override |
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public void writeXML(XMLPrintWriter writer) { |
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writer.startTAG(XML_TAG); |
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writer.textNode(toString()); |
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writer.end(); |
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} |
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} |
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@ -0,0 +1,108 @@
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package com.fr.design.mainframe.template.info; |
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import com.fr.invoke.Reflect; |
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import com.fr.stable.StringUtils; |
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import com.fr.stable.xml.XMLPrintWriter; |
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import com.fr.stable.xml.XMLableReader; |
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import com.fr.third.javax.xml.stream.XMLStreamException; |
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import org.junit.Before; |
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import org.junit.Test; |
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import java.io.PrintWriter; |
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import java.io.StringReader; |
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import java.io.StringWriter; |
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import java.text.SimpleDateFormat; |
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import java.util.Calendar; |
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import static org.junit.Assert.assertArrayEquals; |
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import static org.junit.Assert.assertEquals; |
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import static org.junit.Assert.assertFalse; |
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import static org.junit.Assert.assertTrue; |
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import static org.junit.Assert.fail; |
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/** |
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* Created by plough on 2019/4/21. |
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*/ |
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public class DesignerOpenHistoryTest { |
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private DesignerOpenHistory openHistory; |
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private String[] mockHistory = new String[] { |
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"2019-04-08", "2019-04-03", "2019-03-29" |
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}; |
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@Before |
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public void setUp() { |
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openHistory = DesignerOpenHistory.getInstance(); |
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Reflect.on(openHistory).set("history", mockHistory); |
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} |
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@Test |
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public void testReadAndWrite() throws XMLStreamException { |
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// 写入 xml
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StringWriter sw = new StringWriter(); |
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XMLPrintWriter writer = XMLPrintWriter.create(new PrintWriter(sw)); |
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openHistory.writeXML(writer); |
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writer.flush(); |
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writer.close(); |
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String xmlText = sw.getBuffer().toString(); |
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// 临时修改配置
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Reflect.on(openHistory).set("history", new String[] {"", "", ""}); |
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// 从 xml 中读取
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StringReader sr = new StringReader(xmlText); |
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XMLableReader xmlReader = XMLableReader.createXMLableReader(sr); |
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xmlReader.readXMLObject(openHistory); |
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// 验证：与写入时的配置一致
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assertArrayEquals(mockHistory, (String[])Reflect.on(openHistory).field("history").get()); |
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} |
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@Test |
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public void testToString() { |
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assertEquals("2019-04-08,2019-04-03,2019-03-29", openHistory.toString()); |
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} |
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@Test |
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public void testParseString() { |
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String[] mockDates = {"2020-04-08", "2019-04-03", "2016-03-29"}; |
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Reflect.on(openHistory).call("parseString", StringUtils.join(",", mockDates)); |
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assertArrayEquals(mockDates, (String[])Reflect.on(openHistory).field("history").get()); |
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} |
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@Test |
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public void testGetHistorySpanDayCount() { |
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assertEquals(11, openHistory.getHistorySpanDayCount()); |
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Reflect.on(openHistory).set("history", new String[] {"2019-05-03", "2019-05-02", ""}); |
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assertEquals(2, openHistory.getHistorySpanDayCount()); |
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Reflect.on(openHistory).set("history", new String[] {"2019-05-03", "", ""}); |
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assertEquals(1, openHistory.getHistorySpanDayCount()); |
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try { |
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Reflect.on(openHistory).set("history", new String[] {"", "", ""}); |
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fail("should not be here"); |
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} catch (AssertionError ignore) { |
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} |
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} |
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@Test |
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public void testHasOpenedToday() { |
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assertFalse(openHistory.hasOpenedToday()); |
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Reflect.on(openHistory).set("history", new String[] {getToday(), "2019-02-02", ""}); |
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assertTrue(openHistory.hasOpenedToday()); |
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} |
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@Test |
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public void testUpdate() { |
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openHistory.update(); |
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String[] arr = { getToday(), "2019-04-08", "2019-04-03" }; |
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assertArrayEquals(arr, (String[])Reflect.on(openHistory).field("history").get()); |
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} |
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private String getToday() { |
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return new SimpleDateFormat("yyyy-MM-dd").format(Calendar.getInstance().getTime()); |
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} |
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} |
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