diff --git a/docs/spring/cs50203e2c-9aea-11ee-947e-acde48001122.java b/docs/spring/cs50203e2c-9aea-11ee-947e-acde48001122.java
new file mode 100644
index 00000000..e1324589
--- /dev/null
+++ b/docs/spring/cs50203e2c-9aea-11ee-947e-acde48001122.java
@@ -0,0 +1,84 @@
+/**
+ * Copyright 2009-2017 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.ibatis.reflection.property;
+
+import java.util.Iterator;
+
+/**
+ * @author Clinton Begin
+ */
+public class PropertyTokenizer implements Iterator {
+ private final String indexedName;
+ private final String children;
+ private String name;
+ private String index;
+
+
+ /**
+ * 数据初始化
+ *
+ * @param fullname
+ */
+ public PropertyTokenizer(String fullname) {
+ // 分割 .
+ int delim = fullname.indexOf('.');
+ if (delim > -1) {
+ name = fullname.substring(0, delim);
+ children = fullname.substring(delim + 1);
+ } else {
+ name = fullname;
+ children = null;
+ }
+ indexedName = name;
+ // 分割[
+ delim = name.indexOf('[');
+ if (delim > -1) {
+ index = name.substring(delim + 1, name.length() - 1);
+ name = name.substring(0, delim);
+ }
+ }
+
+ public String getName() {
+ return name;
+ }
+
+ public String getIndex() {
+ return index;
+ }
+
+ public String getIndexedName() {
+ return indexedName;
+ }
+
+ public String getChildren() {
+ return children;
+ }
+
+ @Override
+ public boolean hasNext() {
+ return children != null;
+ }
+
+ @Override
+ public PropertyTokenizer next() {
+ return new PropertyTokenizer(children);
+ }
+
+ @Override
+ public void remove() {
+ throw new UnsupportedOperationException("Remove is not supported, as it has no meaning in the context of properties.");
+ }
+}
diff --git a/docs/spring/cs50712a8a-9aea-11ee-947e-acde48001122.java b/docs/spring/cs50712a8a-9aea-11ee-947e-acde48001122.java
new file mode 100644
index 00000000..d6640592
--- /dev/null
+++ b/docs/spring/cs50712a8a-9aea-11ee-947e-acde48001122.java
@@ -0,0 +1,30 @@
+package com.huifer.bilibili.redis.entity.bo;
+
+import com.huifer.bilibili.redis.entity.BookEntity;
+import com.huifer.bilibili.redis.entity.UserEntity;
+
+import java.util.List;
+
+/**
+ * 假设存在这么一个对象
+ */
+public class UserInfo {
+ private UserEntity userEntity;
+ private List bookEntity;
+
+ public UserEntity getUserEntity() {
+ return userEntity;
+ }
+
+ public void setUserEntity(UserEntity userEntity) {
+ this.userEntity = userEntity;
+ }
+
+ public List getBookEntity() {
+ return bookEntity;
+ }
+
+ public void setBookEntity(List bookEntity) {
+ this.bookEntity = bookEntity;
+ }
+}
diff --git a/docs/spring/cs50c779d0-9aea-11ee-947e-acde48001122.java b/docs/spring/cs50c779d0-9aea-11ee-947e-acde48001122.java
new file mode 100644
index 00000000..80d67685
--- /dev/null
+++ b/docs/spring/cs50c779d0-9aea-11ee-947e-acde48001122.java
@@ -0,0 +1,339 @@
+/**
+ * Copyright 2009-2019 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.ibatis.cursor.defaults;
+
+import org.apache.ibatis.cursor.Cursor;
+import org.apache.ibatis.executor.resultset.DefaultResultSetHandler;
+import org.apache.ibatis.executor.resultset.ResultSetWrapper;
+import org.apache.ibatis.mapping.ResultMap;
+import org.apache.ibatis.session.ResultContext;
+import org.apache.ibatis.session.ResultHandler;
+import org.apache.ibatis.session.RowBounds;
+
+import java.io.Closeable;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.Iterator;
+import java.util.NoSuchElementException;
+
+/**
+ * This is the default implementation of a MyBatis Cursor.
+ * This implementation is not thread safe.
+ *
+ * @author Guillaume Darmont / guillaume@dropinocean.com
+ */
+public class DefaultCursor implements Cursor {
+
+ /**
+ * 对象包装结果处理类
+ */
+ protected final ObjectWrapperResultHandler objectWrapperResultHandler = new ObjectWrapperResultHandler<>();
+ // ResultSetHandler stuff
+ /**
+ * ResultSet 处理器
+ */
+ private final DefaultResultSetHandler resultSetHandler;
+ /**
+ * 结果映射
+ */
+ private final ResultMap resultMap;
+ /**
+ * ResultSet 包装对象
+ */
+ private final ResultSetWrapper rsw;
+ /**
+ * 分页的
+ */
+ private final RowBounds rowBounds;
+ /**
+ * 游标的迭代器
+ */
+ private final CursorIterator cursorIterator = new CursorIterator();
+
+ /**
+ * 游标开启判断
+ */
+ private boolean iteratorRetrieved;
+
+ /**
+ * 游标状态,默认是创建未使用
+ */
+ private CursorStatus status = CursorStatus.CREATED;
+ /**
+ * 分页索引,默认-1
+ */
+ private int indexWithRowBound = -1;
+
+ /**
+ * 构造方法
+ *
+ * @param resultSetHandler
+ * @param resultMap
+ * @param rsw
+ * @param rowBounds
+ */
+ public DefaultCursor(DefaultResultSetHandler resultSetHandler, ResultMap resultMap, ResultSetWrapper rsw, RowBounds rowBounds) {
+ this.resultSetHandler = resultSetHandler;
+ this.resultMap = resultMap;
+ this.rsw = rsw;
+ this.rowBounds = rowBounds;
+ }
+
+
+ @Override
+ public boolean isOpen() {
+ return status == CursorStatus.OPEN;
+ }
+
+ @Override
+ public boolean isConsumed() {
+ return status == CursorStatus.CONSUMED;
+ }
+
+ /**
+ * 当前索引
+ * @return
+ */
+ @Override
+ public int getCurrentIndex() {
+ return rowBounds.getOffset() + cursorIterator.iteratorIndex;
+ }
+
+ /**
+ * 迭代器获取
+ * @return
+ */
+ @Override
+ public Iterator iterator() {
+ // 是否获取过
+ if (iteratorRetrieved) {
+ throw new IllegalStateException("Cannot open more than one iterator on a Cursor");
+ }
+ // 是否关闭
+ if (isClosed()) {
+ throw new IllegalStateException("A Cursor is already closed.");
+ }
+ iteratorRetrieved = true;
+ return cursorIterator;
+ }
+
+ /**
+ * {@link Closeable} 关闭{@link ResultSet}
+ */
+ @Override
+ public void close() {
+ // 判断是否关闭
+ if (isClosed()) {
+ return;
+ }
+
+ ResultSet rs = rsw.getResultSet();
+ try {
+ if (rs != null) {
+ rs.close();
+ }
+ } catch (SQLException e) {
+ // ignore
+ } finally {
+ // 设置游标状态
+ status = CursorStatus.CLOSED;
+ }
+ }
+
+ /**
+ * 去到真正的数据行
+ * @return
+ */
+ protected T fetchNextUsingRowBound() {
+ T result = fetchNextObjectFromDatabase();
+ while (objectWrapperResultHandler.fetched && indexWithRowBound < rowBounds.getOffset()) {
+ result = fetchNextObjectFromDatabase();
+ }
+ return result;
+ }
+
+ /**
+ * 从数据库获取数据
+ * @return
+ */
+ protected T fetchNextObjectFromDatabase() {
+ if (isClosed()) {
+ return null;
+ }
+
+ try {
+ objectWrapperResultHandler.fetched = false;
+ // 游标状态设置
+ status = CursorStatus.OPEN;
+ if (!rsw.getResultSet().isClosed()) {
+ // 处理数据结果放入，objectWrapperResultHandler
+ resultSetHandler.handleRowValues(rsw, resultMap, objectWrapperResultHandler, RowBounds.DEFAULT, null);
+ }
+ } catch (SQLException e) {
+ throw new RuntimeException(e);
+ }
+
+ // 获取处理结果
+ T next = objectWrapperResultHandler.result;
+ // 结果不为空
+ if (objectWrapperResultHandler.fetched) {
+ // 索引+1
+ indexWithRowBound++;
+ }
+ // No more object or limit reached
+ // 如果没有数据, 或者 当前读取条数= 偏移量+限额量
+ if (!objectWrapperResultHandler.fetched || getReadItemsCount() == rowBounds.getOffset() + rowBounds.getLimit()) {
+ // 关闭游标
+ close();
+ status = CursorStatus.CONSUMED;
+ }
+ // 设置结果为null
+ objectWrapperResultHandler.result = null;
+
+ return next;
+ }
+
+ /**
+ * 是否关闭状态判断
+ *
+ * @return
+ */
+ private boolean isClosed() {
+ return status == CursorStatus.CLOSED || status == CursorStatus.CONSUMED;
+ }
+
+ /**
+ * 下一个索引
+ * @return
+ */
+ private int getReadItemsCount() {
+ return indexWithRowBound + 1;
+ }
+
+ /**
+ * 游标的状态
+ */
+ private enum CursorStatus {
+
+ /**
+ * 新创建的游标, ResultSet 还没有使用过
+ * A freshly created cursor, database ResultSet consuming has not started.
+ */
+ CREATED,
+ /**
+ * 游标使用过, ResultSet 被使用
+ * A cursor currently in use, database ResultSet consuming has started.
+ */
+ OPEN,
+ /**
+ * 游标关闭, 可能没有被消费完全
+ * A closed cursor, not fully consumed.
+ */
+ CLOSED,
+ /**
+ * 游标彻底消费完毕, 关闭了
+ * A fully consumed cursor, a consumed cursor is always closed.
+ */
+ CONSUMED
+ }
+
+ /**
+ * 对象处理结果的包装类
+ * @param
+ */
+ protected static class ObjectWrapperResultHandler implements ResultHandler {
+
+ /**
+ * 数据结果
+ */
+ protected T result;
+ /**
+ * 是否null
+ */
+ protected boolean fetched;
+
+ /**
+ * 从{@link ResultContext} 获取结果对象
+ * @param context
+ */
+ @Override
+ public void handleResult(ResultContext context) {
+ this.result = context.getResultObject();
+ context.stop();
+ fetched = true;
+ }
+ }
+
+ /**
+ * 游标迭代器
+ */
+ protected class CursorIterator implements Iterator {
+
+ /**
+ * 下一个数据
+ * Holder for the next object to be returned.
+ */
+ T object;
+
+ /**
+ * 下一个的索引
+ * Index of objects returned using next(), and as such, visible to users.
+ */
+ int iteratorIndex = -1;
+
+ /**
+ * 是否有下一个值
+ * @return
+ */
+ @Override
+ public boolean hasNext() {
+ if (!objectWrapperResultHandler.fetched) {
+ object = fetchNextUsingRowBound();
+ }
+ return objectWrapperResultHandler.fetched;
+ }
+
+ /**
+ * 下一个值
+ * @return
+ */
+ @Override
+ public T next() {
+ // Fill next with object fetched from hasNext()
+ T next = object;
+
+ if (!objectWrapperResultHandler.fetched) {
+ next = fetchNextUsingRowBound();
+ }
+
+ if (objectWrapperResultHandler.fetched) {
+ objectWrapperResultHandler.fetched = false;
+ object = null;
+ iteratorIndex++;
+ return next;
+ }
+ throw new NoSuchElementException();
+ }
+
+ /**
+ * 不可执行抛出异常
+ */
+ @Override
+ public void remove() {
+ throw new UnsupportedOperationException("Cannot remove element from Cursor");
+ }
+ }
+}
diff --git a/docs/spring/cs510ffb9c-9aea-11ee-947e-acde48001122.java b/docs/spring/cs510ffb9c-9aea-11ee-947e-acde48001122.java
new file mode 100644
index 00000000..86d11191
--- /dev/null
+++ b/docs/spring/cs510ffb9c-9aea-11ee-947e-acde48001122.java
@@ -0,0 +1,38 @@
+/**
+ * Copyright 2009-2015 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.ibatis.submitted.javassist;
+
+public class Group {
+
+ private Integer id;
+ private String name;
+
+ public Integer getId() {
+ return id;
+ }
+
+ public void setId(Integer id) {
+ this.id = id;
+ }
+
+ public String getName() {
+ return name;
+ }
+
+ public void setName(String name) {
+ this.name = name;
+ }
+}
diff --git a/docs/spring/cs514fa8c8-9aea-11ee-947e-acde48001122.java b/docs/spring/cs514fa8c8-9aea-11ee-947e-acde48001122.java
new file mode 100644
index 00000000..ce11c625
--- /dev/null
+++ b/docs/spring/cs514fa8c8-9aea-11ee-947e-acde48001122.java
@@ -0,0 +1,39 @@
+/**
+ * Copyright 2009-2019 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.ibatis.submitted.bringrags;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class SimpleObject {
+
+ private String id;
+ private List simpleChildObjects;
+
+ public SimpleObject(String id) {
+ this.id = id;
+ this.simpleChildObjects = new ArrayList<>();
+ }
+
+ public String getId() {
+ return id;
+ }
+
+ public List getSimpleChildObjects() {
+ return simpleChildObjects;
+ }
+
+}