java查询hbase
2016-04-07 14:09
609 查看
/**
* 根据表名,列,列的值获取相关表的字段信息
*
* @param tableName 表名
* @param search_quilifier 查询列
* @param quilifier 目标显示列
* @param column_value 参数值
* @return
* @throws IOException
*/
public JSONArray getTableinfoByColumnValue1(String tableName, List<String> search_quilifier,
List quilifier, String column_value) throws IOException {
tableName = tableName.toUpperCase();
HTable table = getInfoTable(tableName);
List<Filter> filters = new ArrayList<Filter>();
for (String search : search_quilifier) {
SingleColumnValueFilter filter = new SingleColumnValueFilter(Bytes.toBytes("cf"),
Bytes.toBytes(search), CompareFilter.CompareOp.EQUAL, new BinaryComparator(
Bytes.toBytes(column_value)));
filter.setFilterIfMissing(true);//如果没有改列,是否过滤该数据,true过滤即不显示,false显示
filters.add(filter);
}
FilterList filterlist = new FilterList(Operator.MUST_PASS_ONE, filters);
Scan scan = new Scan();
scan.setFilter(filterlist);
ResultScanner scanner = table.getScanner(scan);
JSONArray ja = new JSONArray();
for (Result result : scanner) {
Get get = new Get(Bytes.toBytes(Bytes.toString(result.getRow())));
for (int i = 0; i < quilifier.size(); i++) {
get.addColumn(Bytes.toBytes("cf"), Bytes.toBytes(quilifier.get(i).toString()));
}
Result result_new = table.get(get);
JSONArray result_temp = printResult1(result_new);
ja.addAll(result_temp);
}
scanner.close();
return ja;
}
* 根据表名,列,列的值获取相关表的字段信息
*
* @param tableName 表名
* @param search_quilifier 查询列
* @param quilifier 目标显示列
* @param column_value 参数值
* @return
* @throws IOException
*/
public JSONArray getTableinfoByColumnValue1(String tableName, List<String> search_quilifier,
List quilifier, String column_value) throws IOException {
tableName = tableName.toUpperCase();
HTable table = getInfoTable(tableName);
List<Filter> filters = new ArrayList<Filter>();
for (String search : search_quilifier) {
SingleColumnValueFilter filter = new SingleColumnValueFilter(Bytes.toBytes("cf"),
Bytes.toBytes(search), CompareFilter.CompareOp.EQUAL, new BinaryComparator(
Bytes.toBytes(column_value)));
filter.setFilterIfMissing(true);//如果没有改列,是否过滤该数据,true过滤即不显示,false显示
filters.add(filter);
}
FilterList filterlist = new FilterList(Operator.MUST_PASS_ONE, filters);
Scan scan = new Scan();
scan.setFilter(filterlist);
ResultScanner scanner = table.getScanner(scan);
JSONArray ja = new JSONArray();
for (Result result : scanner) {
Get get = new Get(Bytes.toBytes(Bytes.toString(result.getRow())));
for (int i = 0; i < quilifier.size(); i++) {
get.addColumn(Bytes.toBytes("cf"), Bytes.toBytes(quilifier.get(i).toString()));
}
Result result_new = table.get(get);
JSONArray result_temp = printResult1(result_new);
ja.addAll(result_temp);
}
scanner.close();
return ja;
}
相关文章推荐
- Java中的集合之List、ArrayList介绍
- java学习成果1
- Java高级工程师面试题目汇集(关于Struts,Spring,Hibernate三大框架的面试)
- java连接Neo4j服务器
- shiro +springmvc+freemarker session问题处理 shiro无法记录登陆前页面问题
- Spring中的Ioc
- springMVC3学习(九)--redirect和forward跳转
- java.lang.IllegalStateException: Recursive entry to executePendingTransactio的解决方法
- Java之绘制二次曲线
- Java中finally关键字的使用
- jvm调优之jdk工具的使用
- struts2(一)
- 【正则】常用正则表达式
- java获得当前文件路径
- 浅谈Eclipse dropins插件安装的"坑"(附m2e的各个版本插件下载)
- spring 父子容器的概念,入门博客推荐。必看
- 分布式事务入门-Spring+JTA+Atomikos+Hibernate+JMS
- 使用jackson对Java对象与JSON字符串相互转换
- java中的Serializable接口的作用
- java深拷贝与浅拷贝