How to use

getMethodInjection

method

in

com.facebook.swift.codec.metadata.ThriftFieldMetadata

if (fieldMetadata.getMethodInjection().isPresent()) {
  Object[] parametersValues = new Object[] { data.getValue() };
      fieldMetadata.getMethodInjection().get().getMethod().invoke(instance, parametersValues);

DecoratorThriftFieldMetadata(ThriftFieldMetadata input){
  super(
      input.getId(),
      input.getRequiredness(),
      input.getThriftType(),
      input.getName(),
      input.getType(),
      input.getInjections(),
      input.getConstructorInjection(),
      input.getMethodInjection(),
      input.getExtraction(),
      input.getCoercion());
  // 获取field的类型
  List<ThriftInjection> injections = getInjections();
  checkState(injections.size()>0,"invalid size of injections");
  ThriftInjection injection = injections.get(0);		
  if(injection instanceof ThriftParameterInjection){
    javaType = ((ThriftParameterInjection)injection).getJavaType();
  }else if(injection instanceof ThriftFieldInjection){
    javaType = ((ThriftFieldInjection)injection).getField().getType();
  }else{
    javaType = null;
    // 对于不支持的数据类型无法获取field类型，输出警告
    logger.warning(
        String.format("UNSUPPORED TYPE %s，can't get Java Type. "
            + "(不识别的ThriftInjection实例类型，无法实现requiredness转义)",
        null == injection? null : injection.getClass().getName()));
  }
}
/** 重载方法,实现 requiredness 转义 */

public DecoratorThriftFieldMetadata(ThriftFieldMetadata input){
  super(
      input.getId(),
      input.getRequiredness(),
      input.getThriftType(),
      input.getName(),
      input.getType(),
      input.getInjections(),
      input.getConstructorInjection(),
      input.getMethodInjection(),
      input.getExtraction(),
      input.getCoercion());
  // 获取field的类型
  List<ThriftInjection> injections = getInjections();
  checkState(injections.size()>0,"invalid size of injections");
  ThriftInjection injection = injections.get(0);		
  if(injection instanceof ThriftParameterInjection){
    javaType = ((ThriftParameterInjection)injection).getJavaType();
  }else if(injection instanceof ThriftFieldInjection){
    javaType = ((ThriftFieldInjection)injection).getField().getType();
  }else{
    javaType = null;
    // 对于不支持的数据类型无法获取field类型，输出警告
    logger.warning(
        String.format("UNSUPPORED TYPE %s，can't get Java Type. "
            + "(不识别的ThriftInjection实例类型，无法实现requiredness转义)",
        null == injection? null : injection.getClass().getName()));
  }
}
/** 重载方法,实现 requiredness 转义 */

if (field.getMethodInjection().isPresent()) {
  injectMethod(read, field.getMethodInjection().get(), instance, unionData);