com.alibaba.innodb.java.reader.QueryByPrimaryKeyMain Maven / Gradle / Ivy
/*
* Copyright (C) 1999-2019 Alibaba Group Holding Limited
*/
package com.alibaba.innodb.java.reader;
import com.google.common.collect.ImmutableList;
import com.alibaba.innodb.java.reader.page.index.GenericRecord;
import java.util.Arrays;
/**
* @author xu.zx
*/
public class QueryByPrimaryKeyMain {
public static void main(String[] args) {
String createTableSql = "CREATE TABLE `tb11`\n"
+ "(`id` int(11) NOT NULL ,\n"
+ "`a` bigint(20) NOT NULL,\n"
+ "`b` varchar(64) NOT NULL,\n"
+ "PRIMARY KEY (`id`),\n"
+ "KEY `key_a` (`a`))\n"
+ "ENGINE=InnoDB;";
String ibdFilePath = "/usr/local/mysql/data/test/t.ibd";
try (TableReader reader = new TableReaderImpl(ibdFilePath, createTableSql)) {
reader.open();
// ~~~ query by primary key
GenericRecord record = reader.queryByPrimaryKey(ImmutableList.of(4));
Object[] values = record.getValues();
System.out.println(Arrays.asList(values));
assert record.getPrimaryKey() == record.get("id");
System.out.println("id=" + record.get("id"));
System.out.println("a=" + record.get("a"));
// ~~~ query by primary key with projection
record = reader.queryByPrimaryKey(ImmutableList.of(4), ImmutableList.of("a"));
}
}
}
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