Example usage for org.apache.ibatis.mapping BoundSql getParameterObject

Introduction

In this page you can find the example usage for org.apache.ibatis.mapping BoundSql getParameterObject.

Prototype

public Object getParameterObject()

Source Link

Usage

From source file:org.njqspringboot.support.mybatis.locker.interceptor.OptimisticLocker.java

License:Open Source License

private VersionLocker getVersionLocker(MappedStatement ms, BoundSql boundSql) {

    Class<?>[] paramCls = null;
    Object paramObj = boundSql.getParameterObject();

    /******************?????3?***********************/
    /******************Process param must order by below ***********************/
    // 1??@Param?
    // 1?Process @Param param
    if (paramObj instanceof MapperMethod.ParamMap<?>) {
        MapperMethod.ParamMap<?> mmp = (MapperMethod.ParamMap<?>) paramObj;
        if (null != mmp && !mmp.isEmpty()) {
            paramCls = new Class<?>[mmp.size() / 2];
            int mmpLen = mmp.size() / 2;
            for (int i = 0; i < mmpLen; i++) {
                Object index = mmp.get("param" + (i + 1));
                paramCls[i] = index.getClass();
            }// www. j a  v  a  2  s.  c  o m
        }

        // 2??Map?
        // 2?Process Map param
    } else if (paramObj instanceof Map) {
        paramCls = new Class<?>[] { Map.class };

        // 3??POJO?
        // 3?Process POJO entity param
    } else {
        paramCls = new Class<?>[] { paramObj.getClass() };
    }

    String id = ms.getId();
    Cache.MethodSignature vm = new MethodSignature(id, paramCls);
    VersionLocker versionLocker = versionLockerCache.getVersionLocker(vm);
    if (null != versionLocker) {
        return versionLocker;
    }

    // synchronized???
    // Here remove synchronized keyword or ReentrantLock, because it's a idempotent operation
    if (null == mapperMap || mapperMap.isEmpty()) {
        mapperMap = new HashMap<>();
        Collection<Class<?>> mappers = ms.getConfiguration().getMapperRegistry().getMappers();
        if (null != mappers && !mappers.isEmpty()) {
            for (Class<?> me : mappers) {
                mapperMap.put(me.getName(), me);
            }
        }
    }

    int pos = id.lastIndexOf(".");
    String nameSpace = id.substring(0, pos);
    if (mapperMap.containsKey(nameSpace)) {
        Class<?> mapper = mapperMap.get(nameSpace);
        Method m;
        try {
            m = mapper.getMethod(id.substring(pos + 1), paramCls);
        } catch (NoSuchMethodException | SecurityException e) {
            throw new RuntimeException("The Map type param error." + e, e);
        }
        versionLocker = m.getAnnotation(VersionLocker.class);
        if (null == versionLocker) {
            versionLocker = trueLocker;
        }
        if (!versionLockerCache.containMethodSignature(vm)) {
            versionLockerCache.cacheMethod(vm, versionLocker);
        }
        return versionLocker;
    } else {
        throw new RuntimeException("Config info error, maybe you have not config the Mapper interface");
    }
}