新的开源项目happyjdbc

happyjdbc

项目地址：https://github.com/yuancihang/happyjdbc

 

简化jdbc操作，提供更现代化的api, 支持分库分表

 

public class DataExample {

public static void main(String[] args) throws SQLException {
    DataAccess.getInstance().addDataSource("local", buildDataSource());

    sampleShare();
}

private static DataSource buildDataSource() throws SQLException{
    return new DataSourceBuilder()
                    .setDbName("my")
                    .setHost("localhost")
                    .setPort(3306)
                    .setUsername("root")
                    .setPassword("123456")
                    .build();
}

public static void sampleUniq() throws SQLException{
    int result = DataAccess.getInstance()
                        .execute(new OpUniq<Integer>("local", "select c2 from t1 where c1=?", null, 1){})
                        .uniqResult();
    System.err.println(result);

    T1 t1 = DataAccess.getInstance()
                        .execute(new OpUniq<T1>("local", "select * from t1 where c1=?", null, 1){})
                        .uniqResult();
    System.err.println(t1);

    Map<String, Object> map = DataAccess.getInstance()
                                .execute(new OpUniq<Map<String, Object>>("local", "select * from t1 where c1=?", null, 1){})
                                .uniqResult();
    for(String name : map.keySet()){
        System.err.println(name + "=" + map.get(name));
    }
}

public static void sampleList() throws SQLException{
    List<Integer> result = DataAccess.getInstance()
            .execute(new OpList<Integer>("local", "select c2 from t1", null){})
            .listResult();
    System.err.println(result);

    List<T1> t1 = DataAccess.getInstance()
            .execute(new OpList<T1>("local", "select * from t1", null){})
            .listResult();
    System.err.println(t1);
}

  public static void sampleUpdate() throws SQLException{
    int result = DataAccess.getInstance()
            .execute(new OpUpdate("local", "update t1 set c2=? where c1=?", null, 3, 1))
            .uniqResult();
    System.err.println(result);

    long id = DataAccess.getInstance()
            .execute(new OpInsertReturnId("local", "insert into t1(c2,c3) value(?,?)", null, 10, 10))
            .uniqResult();
    System.err.println(id);
  }

  public static void sampleTransaction() throws SQLException{
    // dbInstance必须一致
    List<OpResult<?>> resultList = DataAccess.getInstance().executeTransaction(Arrays.asList(
                      new OpUpdate("local", "update t1 set c2=? where c1=?", null, 4, 1),
                      new OpUpdate("local", "update t1 set c2=? where c1=?", null, 6, 3)
                      ));
    for(OpResult<?> opResult : resultList){
      System.err.println(opResult.uniqResult());
    }
  }

  public static void sampleShare() throws SQLException{
    // table : user_0 ~ user_31
    // field: id, name
    DbShare.getInstance().addRule("user", "'user_'+(shareParam % 32)");

    int result = DataAccess.getInstance()
              .execute(new OpUpdate("local", "update user set name=? where id=?", 32, "zhang", 32))
              .uniqResult();
    System.err.println(result);
  }

  public static class T1{
    private long c1;
    private int c2;
    private int c3;

    public long getC1() {
      return c1;
    }
    public void setC1(long c1) {
      this.c1 = c1;
    }
    public int getC2() {
      return c2;
    }
    public void setC2(int c2) {
      this.c2 = c2;
    }
    public int getC3() {
      return c3;
    }
    public void setC3(int c3) {
      this.c3 = c3;
    }

    @Override
    public String toString(){
      return c1+","+c2+","+c3;
    }

  }

}

 

maven

<dependency>
    <groupId>com.github.yuancihang</groupId>
    <artifactId>happyjdbc</artifactId>
    <version>1.2</version>
</dependency>

 

gradle

compile 'com.github.yuancihang:happyjdbc:1.2'