52 lines
1.8 KiB
Java
52 lines
1.8 KiB
Java
package backend.service.impl;
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import backend.dao.impl.QuestionsDao;
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import backend.model.Questions;
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import backend.model.enums.GlobalData;
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import java.util.List;
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import java.util.Vector;
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public class QuestionsService {
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private QuestionsDao questionsDao = new QuestionsDao();
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private Vector<Vector<String>> commonHandler(List<Questions> questionsList){
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//加工数据 把数据库查到的List转成Vector<Vector<>>
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Vector<Vector<String>> questionsData = new Vector<>();
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if(questionsList != null) {
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for (Questions questionsPo : questionsList) {
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Vector<String> row = new Vector<>();
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row.add(String.valueOf(questionsPo.getId()));
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row.add(questionsPo.getName());
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row.add(questionsPo.getDescription());
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row.add(questionsPo.getAnswer());
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row.add(GlobalData.FREQUENCY_MAP.get(questionsPo.getFrequency()));
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questionsData.add(row);
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}
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}
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return questionsData;
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}
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public Vector<Vector<String>> getAll(){
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//从数据库中获取所有单词
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List<Questions> questionsList = questionsDao.getAll();
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//把List转成表格所需的格式
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return commonHandler(questionsList);
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//返回给前端
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}
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public Vector<Vector<String>> getByCondition(Integer frequency,String key){
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//从数据库中获取所有单词
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List<Questions> wordPoList = questionsDao.getByCondition(frequency,key);
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//把List转成表格所需的格式
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return commonHandler(wordPoList);
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}
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public boolean insert(Questions question){
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return questionsDao.insert(question);
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}
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public void delete(Integer id){
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questionsDao.delete(id);
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}
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public boolean update(Questions question){
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return questionsDao.update(question);
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}
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}
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