解析Mybatis判断表达式源码分析

Map<String ,String > testArray(@Param("array") String [] array);

<select id="testArray" resultType="map">
  select * from t_ams_ac_pmt_dtl where cpt_pro=#{cptProp}
  <if test="array!=null and array != '' ">
    and cpt_pro=#{cptProp}
  </if>
</select>

@Test
  public void testArray(){
    SqlSession sqlSession = sqlSessionFactory.openSession();
    TBapCheckPtsTranscdMapper mapper = sqlSession.getMapper(TBapCheckPtsTranscdMapper.class);
    String str= "1,2,3";
    String [] strings = str.split(",");
    mapper.testArray(strings);
  }

@Override
 public BoundSql getBoundSql(Object parameterObject) {
  DynamicContext context = new DynamicContext(configuration, parameterObject);
  rootSqlNode.apply(context);
  SqlSourceBuilder sqlSourceParser = new SqlSourceBuilder(configuration);
  Class<?> parameterType = parameterObject == null ? Object.class : parameterObject.getClass();
  SqlSource sqlSource = sqlSourceParser.parse(context.getSql(), parameterType, context.getBindings());
  BoundSql boundSql = sqlSource.getBoundSql(parameterObject);
  for (Map.Entry<String, Object> entry : context.getBindings().entrySet()) {
   boundSql.setAdditionalParameter(entry.getKey(), entry.getValue());
  }
  return boundSql;
 }

@Override
 public boolean apply(DynamicContext context) {
  for (SqlNode sqlNode : contents) {
   sqlNode.apply(context);
  }
  return true;
 }

@Override
 public boolean apply(DynamicContext context) {
  context.appendSql(text);
  return true;
 }

select * from t_ams_ac_pmt_dtl where cpt_pro=#{cptProp}

@Override
 public boolean apply(DynamicContext context) {
  if (evaluator.evaluateBoolean(test, context.getBindings())) {
   contents.apply(context);
   return true;
  }
  return false;
 }

evaluator.evaluateBoolean(test, context.getBindings())

protected Object getValueBody(OgnlContext context, Object source) throws OgnlException {
    Object v1 = this._children[0].getValue(context, source);
    Object v2 = this._children[1].getValue(context, source);
    return OgnlOps.equal(v1, v2) ? Boolean.FALSE : Boolean.TRUE;
  }

Node[0] ： array!=null
Node[1] ： array != ''