Java Code Examples for org.apache.ibatis.mapping.ResultMapping#getNestedQueryId()

The following examples show how to use org.apache.ibatis.mapping.ResultMapping#getNestedQueryId() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: DefaultResultSetHandler.java    From mybaties with Apache License 2.0 6 votes vote down vote up 
private Object createResultObject(ResultSetWrapper rsw, ResultMap resultMap, ResultLoaderMap lazyLoader, String columnPrefix) throws SQLException {
  final List<Class<?>> constructorArgTypes = new ArrayList<Class<?>>();
  final List<Object> constructorArgs = new ArrayList<Object>();
  final Object resultObject = createResultObject(rsw, resultMap, constructorArgTypes, constructorArgs, columnPrefix);
  if (resultObject != null && !typeHandlerRegistry.hasTypeHandler(resultMap.getType())) {
    final List<ResultMapping> propertyMappings = resultMap.getPropertyResultMappings();
    for (ResultMapping propertyMapping : propertyMappings) {
      // issue gcode #109 && issue #149
      if (propertyMapping.getNestedQueryId() != null && propertyMapping.isLazy()) {
        //TODO 使用代理(cglib/javaassist)
        return configuration.getProxyFactory().createProxy(resultObject, lazyLoader, configuration, objectFactory, constructorArgTypes, constructorArgs);
      }
    }
  }
  return resultObject;
}
Example 2
Source File: DefaultResultSetHandler.java    From mybaties with Apache License 2.0 6 votes vote down vote up 
private Object createParameterizedResultObject(ResultSetWrapper rsw, Class<?> resultType, List<ResultMapping> constructorMappings,
    List<Class<?>> constructorArgTypes, List<Object> constructorArgs, String columnPrefix) throws SQLException {
  boolean foundValues = false;
  for (ResultMapping constructorMapping : constructorMappings) {
    final Class<?> parameterType = constructorMapping.getJavaType();
    final String column = constructorMapping.getColumn();
    final Object value;
    if (constructorMapping.getNestedQueryId() != null) {
      value = getNestedQueryConstructorValue(rsw.getResultSet(), constructorMapping, columnPrefix);
    } else if (constructorMapping.getNestedResultMapId() != null) {
      final ResultMap resultMap = configuration.getResultMap(constructorMapping.getNestedResultMapId());
      value = getRowValue(rsw, resultMap);
    } else {
      final TypeHandler<?> typeHandler = constructorMapping.getTypeHandler();
      value = typeHandler.getResult(rsw.getResultSet(), prependPrefix(column, columnPrefix));
    }
    constructorArgTypes.add(parameterType);
    constructorArgs.add(value);
    foundValues = value != null || foundValues;
  }
  return foundValues ? objectFactory.create(resultType, constructorArgTypes, constructorArgs) : null;
}
Example 3
Source File: DefaultResultSetHandler.java    From mybaties with Apache License 2.0 6 votes vote down vote up 
private void createRowKeyForMappedProperties(ResultMap resultMap, ResultSetWrapper rsw, CacheKey cacheKey, List<ResultMapping> resultMappings, String columnPrefix) throws SQLException {
  for (ResultMapping resultMapping : resultMappings) {
    if (resultMapping.getNestedResultMapId() != null && resultMapping.getResultSet() == null) {
      // Issue #392
      final ResultMap nestedResultMap = configuration.getResultMap(resultMapping.getNestedResultMapId());
      createRowKeyForMappedProperties(nestedResultMap, rsw, cacheKey, nestedResultMap.getConstructorResultMappings(),
          prependPrefix(resultMapping.getColumnPrefix(), columnPrefix));
    } else if (resultMapping.getNestedQueryId() == null) {
      final String column = prependPrefix(resultMapping.getColumn(), columnPrefix);
      final TypeHandler<?> th = resultMapping.getTypeHandler();
      List<String> mappedColumnNames = rsw.getMappedColumnNames(resultMap, columnPrefix);
      // Issue #114
      if (column != null && mappedColumnNames.contains(column.toUpperCase(Locale.ENGLISH))) {
        final Object value = th.getResult(rsw.getResultSet(), column);
        if (value != null) {
          cacheKey.update(column);
          cacheKey.update(value);
        }
      }
    }
  }
}
Example 4
Source File: DefaultResultSetHandler.java    From mybatis with Apache License 2.0 6 votes vote down vote up 
private Object getPropertyMappingValue(ResultSet rs, MetaObject metaResultObject, ResultMapping propertyMapping, ResultLoaderMap lazyLoader, String columnPrefix)
    throws SQLException {
  if (propertyMapping.getNestedQueryId() != null) {
    return getNestedQueryMappingValue(rs, metaResultObject, propertyMapping, lazyLoader, columnPrefix);
  } else if (propertyMapping.getResultSet() != null) {
    addPendingChildRelation(rs, metaResultObject, propertyMapping);
    return NO_VALUE;
  } else if (propertyMapping.getNestedResultMapId() != null) {
    // the user added a column attribute to a nested result map, ignore it
    return NO_VALUE;
  } else {
    final TypeHandler<?> typeHandler = propertyMapping.getTypeHandler();
    final String column = prependPrefix(propertyMapping.getColumn(), columnPrefix);
    return typeHandler.getResult(rs, column);
  }
}
Example 5
Source File: DefaultResultSetHandler.java    From mybatis with Apache License 2.0 6 votes vote down vote up 
private Object createResultObject(ResultSetWrapper rsw, ResultMap resultMap, ResultLoaderMap lazyLoader, String columnPrefix) throws SQLException {
  final List<Class<?>> constructorArgTypes = new ArrayList<Class<?>>();
  final List<Object> constructorArgs = new ArrayList<Object>();
  final Object resultObject = createResultObject(rsw, resultMap, constructorArgTypes, constructorArgs, columnPrefix);
  if (resultObject != null && !typeHandlerRegistry.hasTypeHandler(resultMap.getType())) {
    final List<ResultMapping> propertyMappings = resultMap.getPropertyResultMappings();
    for (ResultMapping propertyMapping : propertyMappings) {
      // issue gcode #109 && issue #149
      if (propertyMapping.getNestedQueryId() != null && propertyMapping.isLazy()) {
        //TODO 使用代理(cglib/javaassist)
        return configuration.getProxyFactory().createProxy(resultObject, lazyLoader, configuration, objectFactory, constructorArgTypes, constructorArgs);
      }
    }
  }
  return resultObject;
}
Example 6
Source File: DefaultResultSetHandler.java    From mybatis with Apache License 2.0 6 votes vote down vote up 
private Object createParameterizedResultObject(ResultSetWrapper rsw, Class<?> resultType, List<ResultMapping> constructorMappings,
    List<Class<?>> constructorArgTypes, List<Object> constructorArgs, String columnPrefix) throws SQLException {
  boolean foundValues = false;
  for (ResultMapping constructorMapping : constructorMappings) {
    final Class<?> parameterType = constructorMapping.getJavaType();
    final String column = constructorMapping.getColumn();
    final Object value;
    if (constructorMapping.getNestedQueryId() != null) {
      value = getNestedQueryConstructorValue(rsw.getResultSet(), constructorMapping, columnPrefix);
    } else if (constructorMapping.getNestedResultMapId() != null) {
      final ResultMap resultMap = configuration.getResultMap(constructorMapping.getNestedResultMapId());
      value = getRowValue(rsw, resultMap);
    } else {
      final TypeHandler<?> typeHandler = constructorMapping.getTypeHandler();
      value = typeHandler.getResult(rsw.getResultSet(), prependPrefix(column, columnPrefix));
    }
    constructorArgTypes.add(parameterType);
    constructorArgs.add(value);
    foundValues = value != null || foundValues;
  }
  return foundValues ? objectFactory.create(resultType, constructorArgTypes, constructorArgs) : null;
}
Example 7
Source File: DefaultResultSetHandler.java    From mybatis with Apache License 2.0 6 votes vote down vote up 
private void createRowKeyForMappedProperties(ResultMap resultMap, ResultSetWrapper rsw, CacheKey cacheKey, List<ResultMapping> resultMappings, String columnPrefix) throws SQLException {
  for (ResultMapping resultMapping : resultMappings) {
    if (resultMapping.getNestedResultMapId() != null && resultMapping.getResultSet() == null) {
      // Issue #392
      final ResultMap nestedResultMap = configuration.getResultMap(resultMapping.getNestedResultMapId());
      createRowKeyForMappedProperties(nestedResultMap, rsw, cacheKey, nestedResultMap.getConstructorResultMappings(),
          prependPrefix(resultMapping.getColumnPrefix(), columnPrefix));
    } else if (resultMapping.getNestedQueryId() == null) {
      final String column = prependPrefix(resultMapping.getColumn(), columnPrefix);
      final TypeHandler<?> th = resultMapping.getTypeHandler();
      List<String> mappedColumnNames = rsw.getMappedColumnNames(resultMap, columnPrefix);
      // Issue #114
      if (column != null && mappedColumnNames.contains(column.toUpperCase(Locale.ENGLISH))) {
        final Object value = th.getResult(rsw.getResultSet(), column);
        if (value != null) {
          cacheKey.update(column);
          cacheKey.update(value);
        }
      }
    }
  }
}
Example 8
Source File: DefaultResultSetHandler.java    From mybaties with Apache License 2.0 5 votes vote down vote up 
private Object getPropertyMappingValue(ResultSet rs, MetaObject metaResultObject, ResultMapping propertyMapping, ResultLoaderMap lazyLoader, String columnPrefix)
    throws SQLException {
  if (propertyMapping.getNestedQueryId() != null) {
    return getNestedQueryMappingValue(rs, metaResultObject, propertyMapping, lazyLoader, columnPrefix);
  } else if (propertyMapping.getResultSet() != null) {
    addPendingChildRelation(rs, metaResultObject, propertyMapping);   // TODO is that OK?
    return DEFERED;
  } else {
    final TypeHandler<?> typeHandler = propertyMapping.getTypeHandler();
    final String column = prependPrefix(propertyMapping.getColumn(), columnPrefix);
    return typeHandler.getResult(rs, column);
  }
}
Example 9
Source File: DefaultResultSetHandler.java    From mybaties with Apache License 2.0 5 votes vote down vote up 
private Object getNestedQueryConstructorValue(ResultSet rs, ResultMapping constructorMapping, String columnPrefix) throws SQLException {
  final String nestedQueryId = constructorMapping.getNestedQueryId();
  final MappedStatement nestedQuery = configuration.getMappedStatement(nestedQueryId);
  final Class<?> nestedQueryParameterType = nestedQuery.getParameterMap().getType();
  final Object nestedQueryParameterObject = prepareParameterForNestedQuery(rs, constructorMapping, nestedQueryParameterType, columnPrefix);
  Object value = null;
  if (nestedQueryParameterObject != null) {
    final BoundSql nestedBoundSql = nestedQuery.getBoundSql(nestedQueryParameterObject);
    final CacheKey key = executor.createCacheKey(nestedQuery, nestedQueryParameterObject, RowBounds.DEFAULT, nestedBoundSql);
    final Class<?> targetType = constructorMapping.getJavaType();
    final ResultLoader resultLoader = new ResultLoader(configuration, executor, nestedQuery, nestedQueryParameterObject, targetType, key, nestedBoundSql);
    value = resultLoader.loadResult();
  }
  return value;
}
Example 10
Source File: DefaultResultSetHandler.java    From mybaties with Apache License 2.0 5 votes vote down vote up 
private Object getNestedQueryMappingValue(ResultSet rs, MetaObject metaResultObject, ResultMapping propertyMapping, ResultLoaderMap lazyLoader, String columnPrefix)
    throws SQLException {
  final String nestedQueryId = propertyMapping.getNestedQueryId();
  final String property = propertyMapping.getProperty();
  final MappedStatement nestedQuery = configuration.getMappedStatement(nestedQueryId);
  final Class<?> nestedQueryParameterType = nestedQuery.getParameterMap().getType();
  final Object nestedQueryParameterObject = prepareParameterForNestedQuery(rs, propertyMapping, nestedQueryParameterType, columnPrefix);
  Object value = null;
  if (nestedQueryParameterObject != null) {
    final BoundSql nestedBoundSql = nestedQuery.getBoundSql(nestedQueryParameterObject);
    final CacheKey key = executor.createCacheKey(nestedQuery, nestedQueryParameterObject, RowBounds.DEFAULT, nestedBoundSql);
    final Class<?> targetType = propertyMapping.getJavaType();
    if (executor.isCached(nestedQuery, key)) {
  	//如果已经有一级缓存了，则延迟加载(实际上deferLoad方法中可以看到则是立即加载)
      executor.deferLoad(nestedQuery, metaResultObject, property, key, targetType);
      value = DEFERED;
    } else {
  	//否则lazyLoader.addLoader 需要延迟加载则addLoader
  	//或者ResultLoader.loadResult 不需要延迟加载则立即加载
      final ResultLoader resultLoader = new ResultLoader(configuration, executor, nestedQuery, nestedQueryParameterObject, targetType, key, nestedBoundSql);
      if (propertyMapping.isLazy()) {
        lazyLoader.addLoader(property, metaResultObject, resultLoader);
        value = DEFERED;
      } else {
        value = resultLoader.loadResult();
      }
    }
  }
  return value;
}
Example 11
Source File: DefaultResultSetHandler.java    From mybatis with Apache License 2.0 5 votes vote down vote up 
private Object getNestedQueryConstructorValue(ResultSet rs, ResultMapping constructorMapping, String columnPrefix) throws SQLException {
  final String nestedQueryId = constructorMapping.getNestedQueryId();
  final MappedStatement nestedQuery = configuration.getMappedStatement(nestedQueryId);
  final Class<?> nestedQueryParameterType = nestedQuery.getParameterMap().getType();
  final Object nestedQueryParameterObject = prepareParameterForNestedQuery(rs, constructorMapping, nestedQueryParameterType, columnPrefix);
  Object value = null;
  if (nestedQueryParameterObject != null) {
    final BoundSql nestedBoundSql = nestedQuery.getBoundSql(nestedQueryParameterObject);
    final CacheKey key = executor.createCacheKey(nestedQuery, nestedQueryParameterObject, RowBounds.DEFAULT, nestedBoundSql);
    final Class<?> targetType = constructorMapping.getJavaType();
    final ResultLoader resultLoader = new ResultLoader(configuration, executor, nestedQuery, nestedQueryParameterObject, targetType, key, nestedBoundSql);
    value = resultLoader.loadResult();
  }
  return value;
}
Example 12
Source File: DefaultResultSetHandler.java    From mybatis with Apache License 2.0 5 votes vote down vote up 
private Object getNestedQueryMappingValue(ResultSet rs, MetaObject metaResultObject, ResultMapping propertyMapping, ResultLoaderMap lazyLoader, String columnPrefix)
    throws SQLException {
  final String nestedQueryId = propertyMapping.getNestedQueryId();
  final String property = propertyMapping.getProperty();
  final MappedStatement nestedQuery = configuration.getMappedStatement(nestedQueryId);
  final Class<?> nestedQueryParameterType = nestedQuery.getParameterMap().getType();
  final Object nestedQueryParameterObject = prepareParameterForNestedQuery(rs, propertyMapping, nestedQueryParameterType, columnPrefix);
  Object value = NO_VALUE;
  if (nestedQueryParameterObject != null) {
    final BoundSql nestedBoundSql = nestedQuery.getBoundSql(nestedQueryParameterObject);
    final CacheKey key = executor.createCacheKey(nestedQuery, nestedQueryParameterObject, RowBounds.DEFAULT, nestedBoundSql);
    final Class<?> targetType = propertyMapping.getJavaType();
    if (executor.isCached(nestedQuery, key)) {
  	//如果已经有一级缓存了，则延迟加载(实际上deferLoad方法中可以看到则是立即加载)
      executor.deferLoad(nestedQuery, metaResultObject, property, key, targetType);
    } else {
  	//否则lazyLoader.addLoader 需要延迟加载则addLoader
  	//或者ResultLoader.loadResult 不需要延迟加载则立即加载
      final ResultLoader resultLoader = new ResultLoader(configuration, executor, nestedQuery, nestedQueryParameterObject, targetType, key, nestedBoundSql);
      if (propertyMapping.isLazy()) {
        lazyLoader.addLoader(property, metaResultObject, resultLoader);
      } else {
        value = resultLoader.loadResult();
      }
    }
  }
  return value;
}
Example 13
Source File: EasyOrmSqlBuilder.java    From hsweb-framework with Apache License 2.0 4 votes vote down vote up 
private List<RDBColumnMetaData> createColumn(String prefix, String columnName, ResultMapping resultMapping) {
    List<RDBColumnMetaData> metaData = new ArrayList<>();
    if (resultMapping.getNestedQueryId() == null) {

        if (resultMapping.getNestedResultMapId() != null) {
            ResultMap nests = MybatisUtils.getResultMap(resultMapping.getNestedResultMapId());
            Set<ResultMapping> resultMappings = new HashSet<>(nests.getResultMappings());
            resultMappings.addAll(nests.getIdResultMappings());
            for (ResultMapping mapping : resultMappings) {
                metaData.addAll(createColumn(resultMapping.getProperty(),
                        org.springframework.util.StringUtils.hasText(resultMapping.getColumn())
                                ? resultMapping.getColumn()
                                : resultMapping.getProperty(),
                        mapping));
            }
            return metaData;
        }

        JDBCType jdbcType = JDBCType.VARCHAR;
        try {
            jdbcType = JDBCType.valueOf(resultMapping.getJdbcType().name());
        } catch (Exception e) {
            log.warn("can not parse jdbcType:{}", resultMapping.getJdbcType());
        }
        RDBColumnMetaData column = new RDBColumnMetaData();
        column.setJdbcType(jdbcType);
        column.setName(org.springframework.util.StringUtils.hasText(columnName)
                ? columnName.concat(".").concat(resultMapping.getColumn()) : resultMapping.getColumn());

        if (resultMapping.getTypeHandler() != null) {
            column.setProperty("typeHandler", resultMapping.getTypeHandler().getClass().getName());
        }
        if (!StringUtils.isNullOrEmpty(resultMapping.getProperty())) {
            column.setAlias(org.springframework.util.StringUtils.hasText(prefix)
                    ? prefix.concat(".").concat(resultMapping.getProperty()) : resultMapping.getProperty());

        }
        column.setJavaType(resultMapping.getJavaType());
        column.setProperty("resultMapping", resultMapping);
        metaData.add(column);
    }
    return metaData;
}