import org.apache.ibatis.parsing.GenericTokenParser; //导入依赖的package包/类
@Override
public void appendSql(String sql) {
  GenericTokenParser parser = new GenericTokenParser("#{", "}", new TokenHandler() {
    @Override
    public String handleToken(String content) {
      String newContent = content.replaceFirst("^\\s*" + item + "(?![^.,:\\s])", itemizeItem(item, index));
      if (itemIndex != null && newContent.equals(content)) {
        newContent = content.replaceFirst("^\\s*" + itemIndex + "(?![^.,:\\s])", itemizeItem(itemIndex, index));
      }
      return new StringBuilder("#{").append(newContent).append("}").toString();
    }
  });

  delegate.appendSql(parser.parse(sql));
}
 

import org.apache.ibatis.parsing.GenericTokenParser; //导入依赖的package包/类
public SqlSource parse(String originalSql, Class<?> parameterType, Map<String, Object> additionalParameters) {
  ParameterMappingTokenHandler handler = new ParameterMappingTokenHandler(configuration, parameterType, additionalParameters);
  //替换#{}中间的部分,如何替换，逻辑在ParameterMappingTokenHandler
  GenericTokenParser parser = new GenericTokenParser("#{", "}", handler);
  String sql = parser.parse(originalSql);
  //返回静态SQL源码
  return new StaticSqlSource(configuration, sql, handler.getParameterMappings());
}
 

import org.apache.ibatis.parsing.GenericTokenParser; //导入依赖的package包/类
public boolean isDynamic() {
  DynamicCheckerTokenParser checker = new DynamicCheckerTokenParser();
  GenericTokenParser parser = createParser(checker);
  parser.parse(text);
  return checker.isDynamic();
}
 

import org.apache.ibatis.parsing.GenericTokenParser; //导入依赖的package包/类
@Override
public boolean apply(DynamicContext context) {
  GenericTokenParser parser = createParser(new BindingTokenParser(context, injectionFilter));
  context.appendSql(parser.parse(text));
  return true;
}
 

import org.apache.ibatis.parsing.GenericTokenParser; //导入依赖的package包/类
private GenericTokenParser createParser(TokenHandler handler) {
  return new GenericTokenParser("${", "}", handler);
}
 

import org.apache.ibatis.parsing.GenericTokenParser; //导入依赖的package包/类
public SqlSource parse(String originalSql, Class<?> parameterType, Map<String, Object> additionalParameters) {
  ParameterMappingTokenHandler handler = new ParameterMappingTokenHandler(configuration, parameterType, additionalParameters);
  GenericTokenParser parser = new GenericTokenParser("#{", "}", handler);
  String sql = parser.parse(originalSql);
  return new StaticSqlSource(configuration, sql, handler.getParameterMappings());
}
 

import org.apache.ibatis.parsing.GenericTokenParser; //导入依赖的package包/类
public SqlSource parse(String originalSql, Class<?> parameterType) {
  ParameterMappingTokenHandler handler = new ParameterMappingTokenHandler(configuration, parameterType);
  GenericTokenParser parser = new GenericTokenParser("@{", "}", handler);
  String sql = parser.parse(originalSql);
  return new StaticSqlSource(configuration, sql, handler.getParameterMappings());
}
 

import org.apache.ibatis.parsing.GenericTokenParser; //导入依赖的package包/类
public ParameterMappingSourceParser(Configuration configuration, String script, Class<?> parameterType) {
  ParameterMappingTokenHandler handler = new ParameterMappingTokenHandler(configuration, parameterType);
  GenericTokenParser parser = new GenericTokenParser("@{", "}", handler);
  this.sql = parser.parse(script);
  this.parameterMappingSources = handler.getParameterMappingSources();
}