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chore(project): 修改项目文件结构
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import cc.carm.lib.easysql.api.SQLManager;
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import cc.carm.lib.easysql.api.SQLQuery;
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import cc.carm.lib.easysql.api.SQLTable;
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import cc.carm.lib.easysql.api.enums.ForeignKeyRule;
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import cc.carm.lib.easysql.api.enums.IndexType;
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import cc.carm.lib.easysql.api.enums.NumberType;
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import cc.carm.lib.easysql.api.util.TimeDateUtils;
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import cc.carm.lib.easysql.api.util.UUIDUtil;
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import org.jetbrains.annotations.TestOnly;
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import java.sql.ResultSet;
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import java.sql.SQLException;
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import java.util.UUID;
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@TestOnly
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@SuppressWarnings("all")
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public class EasySQLDemo {
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public void createTable(SQLManager sqlManager) {
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// 同步创建表
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sqlManager.createTable("users")
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// .addColumn("id", "INT(11) AUTO_INCREMENT NOT NULL PRIMARY KEY")
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.addAutoIncrementColumn("id", NumberType.INT, true, true)
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.addColumn("uuid", "VARCHAR(32) NOT NULL UNIQUE KEY")
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.addColumn("username", "VARCHAR(16) NOT NULL")
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.addColumn("age", "TINYINT NOT NULL DEFAULT 1")
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.addColumn("email", "VARCHAR(32)")
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.addColumn("phone", "VARCHAR(16)")
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.addColumn("registerTime", "DATETIME NOT NULL")
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// .addColumn("INDEX `phone`") // 原始方法添加索引
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.setIndex("username", IndexType.UNIQUE_KEY) // 添加唯一索引
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.setIndex(IndexType.INDEX, "contact", "email", "phone") //添加联合索引 (示例)
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.build().execute(null /* 不处理错误 */);
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sqlManager.createTable("user_ipaddr")
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.addAutoIncrementColumn("id", NumberType.INT, true, true)
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.addColumn("uuid", "VARCHAR(32) NOT NULL")
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.addColumn("ip", "VARCHAR(16)")
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.addColumn("time", "DATETIME NOT NULL")
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.addForeignKey("uuid", null,
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"users", "uuid",
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ForeignKeyRule.CASCADE, ForeignKeyRule.CASCADE
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)
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.build().execute(null /* 不处理错误 */);
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}
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public void useSQLTable(SQLManager sqlManager) {
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SQLTable tags = SQLTable.of("servers", table -> {
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table.addAutoIncrementColumn("id", true);
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table.addColumn("user", "INT UNSIGNED NOT NULL");
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table.addColumn("content", "TEXT NOT NULL");
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table.addColumn("time", "DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP");
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table.addForeignKey(
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"user", "fk_user_tags",
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"users", "id",
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ForeignKeyRule.CASCADE, ForeignKeyRule.CASCADE
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);
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});
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try {
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tags.create(sqlManager);
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} catch (SQLException e) {
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e.printStackTrace();
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}
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tags.createQuery().addCondition("id", 5).build()
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.executeAsync(success -> {
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System.out.println("success!");
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});
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}
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public void alertTable(SQLManager sqlManager) {
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// 同步更新表
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sqlManager.alterTable("users")
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.modifyColumn("age", "TINYINT NOT NULL DEFAULT 0")
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.execute(null /* 不处理错误 */);
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}
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public void sqlQuery(SQLManager sqlManager) {
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// 同步SQL查询
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try (SQLQuery query = sqlManager.createQuery()
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.inTable("users") // 在users表中查询
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.selectColumns("id", "name") // 选中 id 与 name列
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.addCondition("age", ">", 18) // 限定 age 要大于5
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.addCondition("email", null) // 限定查询 email 字段为空
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.addNotNullCondition("phone") // 限定 phone 字段不为空
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.addTimeCondition("registerTime", // 时间字段
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System.currentTimeMillis() - 100000, //限制开始时间
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-1//不限制结束时间
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).build().execute()) {
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ResultSet resultSet = query.getResultSet();
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//do something
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} catch (SQLException exception) {
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exception.printStackTrace();
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}
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UUID userUUID = sqlManager.createQuery()
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.inTable("users") // 在users表中查询
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.selectColumns("uuid")
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.addCondition("id", 5) // 限定 id 为 5
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.setLimit(1) // 只取出一个数据
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.build().execute(query -> {
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//可以直接进行数据处理
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ResultSet result = query.getResultSet();
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return result.next() ? UUIDUtil.toUUID(result.getString("uuid")) : null;
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}, (exception, action) -> {
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// 处理异常，不想处理直接填null
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});
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}
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public void sqlQueryAsync(SQLManager sqlManager) {
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// 异步SQL查询
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sqlManager.createQuery()
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.inTable("users") // 在users表中查询
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.addCondition("id", 5) // 限定 id 为 5
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.setLimit(1) // 只取出一个数据
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.build().executeAsync(success -> {
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ResultSet resultSet = success.getResultSet();
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if (resultSet != null && resultSet.next()) {
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String username = resultSet.getString("username");
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}
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}, (exception, action) -> {
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//do something
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long createTIme = action.getCreateTime();
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String shortID = action.getShortID();
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String sqlContent = action.getSQLContent();
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});
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}
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public void sqlInsert(SQLManager sqlManager) {
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// 同步SQL插入 （不使用try-catch的情况下，返回的数值可能为空。）
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Long id = sqlManager.createInsert("users")
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.setColumnNames("username", "phone", "email", "registerTime")
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.setParams("CarmJos", "18888888888", "carm@carm.cc", TimeDateUtils.getCurrentTime())
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.setReturnGeneratedKey(true)// 设定在后续返回自增主键
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.execute((exception, action) -> {
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// 处理异常
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System.out.println("#" + action.getShortID() + " -> " + action.getSQLContent());
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exception.printStackTrace();
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});
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try {
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Long userID = sqlManager.createInsert("users")
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.setColumnNames("username", "phone", "email", "registerTime")
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.setParams("CarmJos", "18888888888", "carm@carm.cc", TimeDateUtils.getCurrentTime())
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.returnGeneratedKey().execute();
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System.out.println("新用户的ID为 " + userID);
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} catch (SQLException exception) {
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exception.printStackTrace();
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}
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}
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}
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