【问答功能】--调整问题热度

git-svn-id: svn+ssh://10.10.101.21/source/platform/platform-b2b@6089 f3bf4e98-0cf0-11e4-a00c-a99a8b9d557d

src/main/java/com/uas/platform/b2b/service/impl/QuestionServiceImpl.java

@@ -4,6 +4,7 @@ import java.util.ArrayList;
 import java.util.Date;
 import java.util.List;
 
+import org.apache.commons.collections.CollectionUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.domain.Page;
 import org.springframework.stereotype.Service;
@@ -19,30 +20,30 @@ public class QuestionServiceImpl implements QuestionService {
 
 	@Autowired
 	private QuestionDao questionDao;
-	
+
 	/**
 	 * 查找常见问题
 	 */
 	@Override
 	public Page<Question> findCommonQuestion(Long hot, boolean isAuthed, final PageInfo pageInfo) {
-		if(isAuthed){	//已登录
+		if (isAuthed) { // 已登录
 			return questionDao.findCommonQuestion(hot, pageInfo);
-		}else{			//未登录
+		} else { // 未登录
 			return questionDao.findCommonAndPublic(hot, pageInfo);
 		}
 	}
-	
+
 	/**
 	 * 分类查找问题
 	 */
 	@Override
 	public Page<Question> findByClassId(Long classId, boolean isAuthed, final PageInfo pageInfo) {
-		if(isAuthed){	//已登录
+		if (isAuthed) { // 已登录
 			return questionDao.findByClassId(classId, pageInfo);
-		}else{			//未登录
+		} else { // 未登录
 			return questionDao.findByClassIdAndIsPublic(classId, (long) 1, pageInfo);
 		}
-		
+
 	}
 
 	/**
@@ -55,20 +56,21 @@ public class QuestionServiceImpl implements QuestionService {
 			return questions.get(0);
 		return null;
 	}
-	
+
 	/**
 	 * 更新问题的热度值
+	 * 
 	 * @param questionId
 	 */
 	@Override
 	public void updateHot(Long questionId) {
 		List<Question> questions = questionDao.findQuestion(questionId);
-		if(questions.size() > 0){
-			questions.get(0).setHot(questions.get(0).getHot()+1);
+		if (CollectionUtils.isNotEmpty(questions)) {
+			questions.get(0).setHot((questions.get(0).getHot() == null) ? 1L : (questions.get(0).getHot() + 1));
 			questionDao.save(questions.get(0));
 		}
 	}
-	
+
 	/**
 	 * 搜索问题（未分词）
 	 */
@@ -76,8 +78,8 @@ public class QuestionServiceImpl implements QuestionService {
 	public List<Question> search(String question, Double similarity) {
 		List<Question> questions = questionDao.findAll();
 		List<Question> result = new ArrayList<Question>();
-		for(int i = 0; i < questions.size(); i++){
-			if(CosineSimilarityAlgorithm.getSimilarity(question, questions.get(i).getTitle()) > similarity){
+		for (int i = 0; i < questions.size(); i++) {
+			if (CosineSimilarityAlgorithm.getSimilarity(question, questions.get(i).getTitle()) > similarity) {
 				result.add(questions.get(i));
 			}
 		}
@@ -85,28 +87,28 @@ public class QuestionServiceImpl implements QuestionService {
 			return result;
 		return null;
 	}
-	
+
 	/**
 	 * 问题反馈
 	 */
 	@Override
-	public void feedBackQuestion(Long classId, Long isPublic, String title, Long userUU){
+	public void feedBackQuestion(Long classId, Long isPublic, String title, Long userUU) {
 		Question question = new Question();
 		question.setClassId(classId);
 		question.setIsPublic(isPublic);
 		question.setTitle(title);
 		question.setCreateUserUU(userUU);
 		question.setCreateTime(new Date());
-		question.setHot((long) 1);	//新问题热度值默认为1
-		question.setIsResolved((long) 0);	//新问题默认未解决
+		question.setHot((long) 1); // 新问题热度值默认为1
+		question.setIsResolved((long) 0); // 新问题默认未解决
 		questionDao.save(question);
 	}
-	
+
 	/**
 	 * 查找某用户的反馈问题
 	 */
 	@Override
-	public Page<Question> findByUserUU(Long userUU, final PageInfo pageInfo){
+	public Page<Question> findByUserUU(Long userUU, final PageInfo pageInfo) {
 		return questionDao.findByCreateUserUU(userUU, pageInfo);
 	}
 }