(源码)基于Spring Boot框架的问答社区系统.zip

/* 这段代码是一个使用Java编写的类，名为`CommentExample`，它定义了一个查询评论（Comment）数据的标准。该类通过`Criteria`类来构建查询条件，用于数据库查询。 该类的主要部分如下： 1. `orderByClause`：用于排序的SQL语句片段。 2. `distinct`：是否进行去重查询的布尔值。 3. `oredCriteria`：一个`Criteria`对象的列表，用于存储查询条件。 `CommentExample`类提供了多种方法来设置和获取这些属性，并提供了`or()`和`createCriteria()`方法用于构建查询条件。 `Criteria`类是一个内部类，用于存储查询条件。它包含了一个`condition`字符串（表示查询条件）、一个`value`对象（表示查询条件中的值）、一个`secondValue`对象（表示在`between`查询中的第二个值）、以及一个`typeHandler`字符串（表示值的类型处理器）。 此外，`Criteria`类还包含了一些静态方法，如`andIdIsNull()`、`andIdEqualTo(Long value)`等，这些方法用于创建特定的查询条件。 整体来说，这段代码是一个用于构建查询评论数据的标准类，它可以通过添加多个`Criteria`对象来构建复杂的查询条件。 */ package com.xw.community.model; import java.util.ArrayList; import java.util.List; public class CommentExample { /** * This field was generated by MyBatis Generator. * This field corresponds to the database table comment * * @mbg.generated Sat Mar 28 18:06:26 CST 2020 */ protected String orderByClause; /** * This field was generated by MyBatis Generator. * This field corresponds to the database table comment * * @mbg.generated Sat Mar 28 18:06:26 CST 2020 */ protected boolean distinct; /** * This field was generated by MyBatis Generator. * This field corresponds to the database table comment * * @mbg.generated Sat Mar 28 18:06:26 CST 2020 */ protected List<Criteria> oredCriteria; /** * This method was generated by MyBatis Generator. * This method corresponds to the database table comment * * @mbg.generated Sat Mar 28 18:06:26 CST 2020 */ public CommentExample() { oredCriteria = new ArrayList<>(); } /** * This method was generated by MyBatis Generator. * This method corresponds to the database table comment * * @mbg.generated Sat Mar 28 18:06:26 CST 2020 */ public void setOrderByClause(String orderByClause) { this.orderByClause = orderByClause; } /** * This method was generated by MyBatis Generator. * This method corresponds to the database table comment * * @mbg.generated Sat Mar 28 18:06:26 CST 2020 */ public String getOrderByClause() { return orderByClause; } /** * This method was generated by MyBatis Generator. * This method corresponds to the database table comment * * @mbg.generated Sat Mar 28 18:06:26 CST 2020 */ public void setDistinct(boolean distinct) { this.distinct = distinct; } /** * This method was generated by MyBatis Generator. * This method corresponds to the database table comment * * @mbg.generated Sat Mar 28 18:06:26 CST 2020 */ public boolean isDistinct() { return distinct; } /** * This method was generated by MyBatis Generator. * This method corresponds to the database table comment * * @mbg.generated Sat Mar 28 18:06:26 CST 2020 */ public List<Criteria> getOredCriteria() { return oredCriteria; } /** * This method was generated by MyBatis Generator. * This method corresponds to the database table comment * * @mbg.generated Sat Mar 28 18:06:26 CST 2020 */ public void or(Criteria criteria) { oredCriteria.add(criteria); } /** * This method was generated by MyBatis Generator. * This method corresponds to the database table comment * * @mbg.generated Sat Mar 28 18:06:26 CST 2020 */ public Criteria or() { Criteria criteria = createCriteriaInternal(); oredCriteria.add(criteria); return criteria; } /** * This method was generated by MyBatis Generator. * This method corresponds to the database table comment * * @mbg.generated Sat Mar 28 18:06:26 CST 2020 */ public Criteria createCriteria() { Criteria criteria = createCriteriaInternal(); if (oredCriteria.size() == 0) { oredCriteria.add(criteria); } return criteria; } /** * This method was generated by MyBatis Generator. * This method corresponds to the database table comment * * @mbg.generated Sat Mar 28 18:06:26 CST 2020 */ protected Criteria createCriteriaInternal() { Criteria criteria = new Criteria(); return criteria; } /** * This method was generated by MyBatis Generator. * This method corresponds to the database table comment * * @mbg.generated Sat Mar 28 18:06:26 CST 2020 */ public void clear() { oredCriteria.clear(); orderByClause = null; distinct = false; } /** * This class was generated by MyBatis Generator. * This class corresponds to the database table comment * * @mbg.generated Sat Mar 28 18:06:26 CST 2020 */ protected abstract static class GeneratedCriteria { protected List<Criterion> criteria; protected GeneratedCriteria() { super(); criteria = new ArrayList<>(); } public boolean isValid() { return criteria.size() > 0; } public List<Criterion> getAllCriteria() { return criteria; } public List<Criterion> getCriteria() { return criteria; } protected void addCriterion(String condition) { if (condition == null) { throw new RuntimeException("Value for condition cannot be null"); } criteria.add(new Criterion(condition)); } protected void addCriterion(String condition, Object value, String property) { if (value == null) { throw new RuntimeException("Value for " + property + " cannot be null"); } criteria.add(new Criterion(condition, value)); } protected void addCriterion(String condition, Object value1, Object value2, String property) { if (value1 == null || value2 == null) { throw new RuntimeException("Between values for " + property + " cannot be null"); } criteria.add(new Criterion(condition, value1, value2)); } public Criteria andIdIsNull() { addCriterion("id is null"); return (Criteria) this; } public Criteria andIdIsNotNull() { addCriterion("id is not null"); return (Criteria) this; } public Criteria andIdEqualTo(Long value) { addCriterion("id =", value, "id"); return (Criteria) this; } public Criteria andIdNotEqualTo(Long value) { addCriterion("id <>", value, "id"); return (Criteria) this; } public Criteria andIdGreaterThan(Long value) { addCriterion("id >", value, "id"); return (Criteria) this; } public Criteria andIdGreaterThanOrEqualTo(Long value) { addCriterion("id >=", value, "id"); return (Criteria) this; } public Criteria andIdLessThan(Long value) { addCriterion("id <", valu