write a line into test.file

docs/spring/csefb38a84-c3c6-11ee-b834-acde48001122.java

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+/**
+ * Copyright 2009-2018 the original author or authors.
+ * <p>
+ * 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
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * 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.executor.statement;
+
+import org.apache.ibatis.cursor.Cursor;
+import org.apache.ibatis.executor.Executor;
+import org.apache.ibatis.executor.keygen.Jdbc3KeyGenerator;
+import org.apache.ibatis.executor.keygen.KeyGenerator;
+import org.apache.ibatis.mapping.BoundSql;
+import org.apache.ibatis.mapping.MappedStatement;
+import org.apache.ibatis.mapping.ResultSetType;
+import org.apache.ibatis.session.ResultHandler;
+import org.apache.ibatis.session.RowBounds;
+
+import java.sql.*;
+import java.util.List;
+
+/**
+ * @author Clinton Begin
+ */
+public class PreparedStatementHandler extends BaseStatementHandler {
+
+    public PreparedStatementHandler(Executor executor, MappedStatement mappedStatement, Object parameter, RowBounds rowBounds, ResultHandler resultHandler, BoundSql boundSql) {
+        super(executor, mappedStatement, parameter, rowBounds, resultHandler, boundSql);
+    }
+
+    @Override
+    public int update(Statement statement) throws SQLException {
+        // 类型转换
+        PreparedStatement ps = (PreparedStatement) statement;
+        // 执行sql
+        ps.execute();
+        // 受影响行数
+        int rows = ps.getUpdateCount();
+        Object parameterObject = boundSql.getParameterObject();
+        //  key 生成器
+        KeyGenerator keyGenerator = mappedStatement.getKeyGenerator();
+        // 获取自增主键
+        keyGenerator.processAfter(executor, mappedStatement, ps, parameterObject);
+        return rows;
+    }
+
+    @Override
+    public void batch(Statement statement) throws SQLException {
+        PreparedStatement ps = (PreparedStatement) statement;
+        ps.addBatch();
+    }
+
+    @Override
+    public <E> List<E> query(Statement statement, ResultHandler resultHandler) throws SQLException {
+        PreparedStatement ps = (PreparedStatement) statement;
+        ps.execute();
+        return resultSetHandler.handleResultSets(ps);
+    }
+
+    @Override
+    public <E> Cursor<E> queryCursor(Statement statement) throws SQLException {
+        PreparedStatement ps = (PreparedStatement) statement;
+        ps.execute();
+        return resultSetHandler.handleCursorResultSets(ps);
+    }
+
+    @Override
+    protected Statement instantiateStatement(Connection connection) throws SQLException {
+        String sql = boundSql.getSql();
+        if (mappedStatement.getKeyGenerator() instanceof Jdbc3KeyGenerator) {
+            String[] keyColumnNames = mappedStatement.getKeyColumns();
+            if (keyColumnNames == null) {
+                return connection.prepareStatement(sql, PreparedStatement.RETURN_GENERATED_KEYS);
+            } else {
+                return connection.prepareStatement(sql, keyColumnNames);
+            }
+        } else if (mappedStatement.getResultSetType() == ResultSetType.DEFAULT) {
+            return connection.prepareStatement(sql);
+        } else {
+            return connection.prepareStatement(sql, mappedStatement.getResultSetType().getValue(), ResultSet.CONCUR_READ_ONLY);
+        }
+    }
+
+    @Override
+    public void parameterize(Statement statement) throws SQLException {
+        parameterHandler.setParameters((PreparedStatement) statement);
+    }
+
+}

docs/spring/csf007d42c-c3c6-11ee-b834-acde48001122.java

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+/**
+ * Copyright 2009-2019 the original author or authors.
+ * <p>
+ * 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
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * 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.type;
+
+import org.junit.jupiter.api.Test;
+
+import java.math.BigDecimal;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class TypeAliasRegistryTest {
+
+    @Test
+    void shouldRegisterAndResolveTypeAlias() {
+        TypeAliasRegistry typeAliasRegistry = new TypeAliasRegistry();
+
+        typeAliasRegistry.registerAlias("rich", "org.apache.ibatis.domain.misc.RichType");
+
+        assertEquals("org.apache.ibatis.domain.misc.RichType", typeAliasRegistry.resolveAlias("rich").getName());
+    }
+
+    /**
+     * 对注解 {@link Alias} 的测试用例
+     */
+    @Test
+    void testAnnotation() {
+        TypeAliasRegistry typeAliasRegistry = new TypeAliasRegistry();
+        typeAliasRegistry.registerAlias(Hc.class);
+        assertEquals("org.apache.ibatis.type.Hc", typeAliasRegistry.resolveAlias("hc").getName());
+    }
+
+    @Test
+    void shouldFetchArrayType() {
+        TypeAliasRegistry typeAliasRegistry = new TypeAliasRegistry();
+        assertEquals(Byte[].class, typeAliasRegistry.resolveAlias("byte[]"));
+    }
+
+    @Test
+    void shouldBeAbleToRegisterSameAliasWithSameTypeAgain() {
+        TypeAliasRegistry typeAliasRegistry = new TypeAliasRegistry();
+        typeAliasRegistry.registerAlias("String", String.class);
+        typeAliasRegistry.registerAlias("string", String.class);
+    }
+
+    @Test
+    void shouldNotBeAbleToRegisterSameAliasWithDifferentType() {
+        TypeAliasRegistry typeAliasRegistry = new TypeAliasRegistry();
+        assertThrows(TypeException.class, () -> typeAliasRegistry.registerAlias("string", BigDecimal.class));
+    }
+
+    @Test
+    void shouldBeAbleToRegisterAliasWithNullType() {
+        TypeAliasRegistry typeAliasRegistry = new TypeAliasRegistry();
+        typeAliasRegistry.registerAlias("foo", (Class<?>) null);
+        assertNull(typeAliasRegistry.resolveAlias("foo"));
+    }
+
+    @Test
+    void shouldBeAbleToRegisterNewTypeIfRegisteredTypeIsNull() {
+        TypeAliasRegistry typeAliasRegistry = new TypeAliasRegistry();
+        typeAliasRegistry.registerAlias("foo", (Class<?>) null);
+        typeAliasRegistry.registerAlias("foo", String.class);
+    }
+
+
+}

docs/spring/csf055bfca-c3c6-11ee-b834-acde48001122.java

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+package com.huifer.mybatis.proxy;
+
+/**
+ * 描述:
+ * 主要业务的实现
+ *
+ * @author huifer
+ * @date 2019-02-24
+ */
+public class Person implements BaseMothed {
+    @Override
+    public void eat() {
+        System.out.println("吃东西了");
+    }
+
+    @Override
+    public void play() {
+        System.out.println("开始玩了");
+    }
+}