[
https://issues.apache.org/jira/browse/HBASE-3461?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
ncanis updated HBASE-3461:
--------------------------
Description:
Hello.
first of all, thanks to hbase members so much ,
you helped me a lot.
I wrote simple jdo module for hbase newbie. I wish this module can help them.
Some features
- simple jdo(used reflection)
- HTable pool ( I already know HTablePool in habse )
- simple query classes ( insert,delete,update,select)
- some convinent mehtods.
- table sequence generator
I want to contribute this module to hbase
absolutely, I'll do upgrade that more than more.
again, thanks for help.
[http://code.google.com/p/hbase-jdo/]
---------------------------------------------
{code}
AbstractHBaseDBO dbo = new HBaseDBOImpl();
//drop if table is already exist.
if(dbo.isTableExist("user")){
dbo.deleteTable("user");
}
//create table
dbo.createTableIfNotExist("user",HBaseOrder.DESC,"account");
//dbo.createTableIfNotExist("user",HBaseOrder.ASC,"account");
//create index.
String[] cols={"id","name"};
dbo.addIndexExistingTable("user","account",cols);
//insert
InsertQuery insert = dbo.createInsertQuery("user");
UserBean bean = new UserBean();
bean.setFamily("account");
bean.setAge(20);
bean.setEmail("[email protected]");
bean.setId("ncanis");
bean.setName("ncanis");
bean.setPassword("1111");
insert.insert(bean);
//select 1 row
SelectQuery select = dbo.createSelectQuery("user");
UserBean resultBean =
(UserBean)select.select(bean.getRow(),UserBean.class);
// select column value.
String value =
(String)select.selectColumn(bean.getRow(),"account","id",String.class);
// search with option (QSearch has EQUAL, NOT_EQUAL, LIKE)
// select id,password,name,email from account where id='ncanis'
limit startRow,20
HBaseParam param = new HBaseParam();
param.setPage(bean.getRow(),20);
param.addColumn("id","password","name","email");
param.addSearchOption("id","ncanis",QSearch.EQUAL);
select.search("account", param, UserBean.class);
// search column value is existing.
boolean isExist =
select.existColumnValue("account","id","ncanis".getBytes());
// update password.
UpdateQuery update = dbo.createUpdateQuery("user");
Hashtable<String, byte[]> colsTable = new Hashtable<String,
byte[]>();
colsTable.put("password","2222".getBytes());
update.update(bean.getRow(),"account",colsTable);
//delete
DeleteQuery delete = dbo.createDeleteQuery("user");
delete.deleteRow(resultBean.getRow());
////////////////////////////////////
// etc
// HTable pool with apache commons pool
// borrow and release. HBasePoolManager(maxActive, minIdle
etc..)
IndexedTable table = dbo.getPool().borrow("user");
dbo.getPool().release(table);
// upload bigFile by hadoop directly.
HBaseBigFile bigFile = new HBaseBigFile();
File file = new File("doc/movie.avi");
FileInputStream fis = new FileInputStream(file);
Path rootPath = new Path("/files/");
String filename = "movie.avi";
bigFile.uploadFile(rootPath,filename,fis,true);
// receive file stream from hadoop.
Path p = new Path(rootPath,filename);
InputStream is = bigFile.path2Stream(p,4096);
{code}
was:
Hello.
first of all, thanks to hbase members so mush ,
you helped me a lot.
I wrote simple jdo module for hbase newbie. I wish this module can help them.
Some features
- simple jdo
- HTable pool ( I already know HTablePool in habse )
- simple query classes ( insert,delete,update,select)
- some convinent mehtods.
- table sequence generator
I want to contribute this module to hbase
absolutely, I'll do upgrade that more than more.
again, thanks for help.
[http://code.google.com/p/hbase-jdo/]
---------------------------------------------
{code}
AbstractHBaseDBO dbo = new HBaseDBOImpl();
//drop if table is already exist.
if(dbo.isTableExist("user")){
dbo.deleteTable("user");
}
//create table
dbo.createTableIfNotExist("user",HBaseOrder.DESC,"account");
//dbo.createTableIfNotExist("user",HBaseOrder.ASC,"account");
//create index.
String[] cols={"id","name"};
dbo.addIndexExistingTable("user","account",cols);
//insert
InsertQuery insert = dbo.createInsertQuery("user");
UserBean bean = new UserBean();
bean.setFamily("account");
bean.setAge(20);
bean.setEmail("[email protected]");
bean.setId("ncanis");
bean.setName("ncanis");
bean.setPassword("1111");
insert.insert(bean);
//select 1 row
SelectQuery select = dbo.createSelectQuery("user");
UserBean resultBean =
(UserBean)select.select(bean.getRow(),UserBean.class);
// select column value.
String value =
(String)select.selectColumn(bean.getRow(),"account","id",String.class);
// search with option (QSearch has EQUAL, NOT_EQUAL, LIKE)
// select id,password,name,email from account where id='ncanis'
limit startRow,20
HBaseParam param = new HBaseParam();
param.setPage(bean.getRow(),20);
param.addColumn("id","password","name","email");
param.addSearchOption("id","ncanis",QSearch.EQUAL);
select.search("account", param, UserBean.class);
// search column value is existing.
boolean isExist =
select.existColumnValue("account","id","ncanis".getBytes());
// update password.
UpdateQuery update = dbo.createUpdateQuery("user");
Hashtable<String, byte[]> colsTable = new Hashtable<String,
byte[]>();
colsTable.put("password","2222".getBytes());
update.update(bean.getRow(),"account",colsTable);
//delete
DeleteQuery delete = dbo.createDeleteQuery("user");
delete.deleteRow(resultBean.getRow());
////////////////////////////////////
// etc
// HTable pool with apache commons pool
// borrow and release. HBasePoolManager(maxActive, minIdle
etc..)
IndexedTable table = dbo.getPool().borrow("user");
dbo.getPool().release(table);
// upload bigFile by hadoop directly.
HBaseBigFile bigFile = new HBaseBigFile();
File file = new File("doc/movie.avi");
FileInputStream fis = new FileInputStream(file);
Path rootPath = new Path("/files/");
String filename = "movie.avi";
bigFile.uploadFile(rootPath,filename,fis,true);
// receive file stream from hadoop.
Path p = new Path(rootPath,filename);
InputStream is = bigFile.path2Stream(p,4096);
{code}
> Hbase jdo module.
> -----------------
>
> Key: HBASE-3461
> URL: https://issues.apache.org/jira/browse/HBASE-3461
> Project: HBase
> Issue Type: Improvement
> Affects Versions: 0.90.0
> Reporter: ncanis
> Fix For: 0.90.1
>
> Attachments: hbase-jdo-0.1-20100121.jar,
> hbase-jdo-examples-test-0.1-20100121.jar, hbase-jdo-src-0.1-20100121.jar,
> HBaseExample.java
>
>
> Hello.
> first of all, thanks to hbase members so much ,
> you helped me a lot.
> I wrote simple jdo module for hbase newbie. I wish this module can help them.
> Some features
> - simple jdo(used reflection)
> - HTable pool ( I already know HTablePool in habse )
> - simple query classes ( insert,delete,update,select)
> - some convinent mehtods.
> - table sequence generator
> I want to contribute this module to hbase
> absolutely, I'll do upgrade that more than more.
> again, thanks for help.
> [http://code.google.com/p/hbase-jdo/]
> ---------------------------------------------
> {code}
> AbstractHBaseDBO dbo = new HBaseDBOImpl();
>
> //drop if table is already exist.
> if(dbo.isTableExist("user")){
> dbo.deleteTable("user");
> }
>
> //create table
> dbo.createTableIfNotExist("user",HBaseOrder.DESC,"account");
> //dbo.createTableIfNotExist("user",HBaseOrder.ASC,"account");
>
> //create index.
> String[] cols={"id","name"};
> dbo.addIndexExistingTable("user","account",cols);
>
> //insert
> InsertQuery insert = dbo.createInsertQuery("user");
> UserBean bean = new UserBean();
> bean.setFamily("account");
> bean.setAge(20);
> bean.setEmail("[email protected]");
> bean.setId("ncanis");
> bean.setName("ncanis");
> bean.setPassword("1111");
> insert.insert(bean);
>
> //select 1 row
> SelectQuery select = dbo.createSelectQuery("user");
> UserBean resultBean =
> (UserBean)select.select(bean.getRow(),UserBean.class);
>
> // select column value.
> String value =
> (String)select.selectColumn(bean.getRow(),"account","id",String.class);
>
> // search with option (QSearch has EQUAL, NOT_EQUAL, LIKE)
> // select id,password,name,email from account where id='ncanis'
> limit startRow,20
> HBaseParam param = new HBaseParam();
> param.setPage(bean.getRow(),20);
> param.addColumn("id","password","name","email");
> param.addSearchOption("id","ncanis",QSearch.EQUAL);
> select.search("account", param, UserBean.class);
>
> // search column value is existing.
> boolean isExist =
> select.existColumnValue("account","id","ncanis".getBytes());
>
> // update password.
> UpdateQuery update = dbo.createUpdateQuery("user");
> Hashtable<String, byte[]> colsTable = new Hashtable<String,
> byte[]>();
> colsTable.put("password","2222".getBytes());
> update.update(bean.getRow(),"account",colsTable);
>
> //delete
> DeleteQuery delete = dbo.createDeleteQuery("user");
> delete.deleteRow(resultBean.getRow());
>
> ////////////////////////////////////
> // etc
>
> // HTable pool with apache commons pool
> // borrow and release. HBasePoolManager(maxActive, minIdle
> etc..)
> IndexedTable table = dbo.getPool().borrow("user");
> dbo.getPool().release(table);
>
> // upload bigFile by hadoop directly.
> HBaseBigFile bigFile = new HBaseBigFile();
> File file = new File("doc/movie.avi");
> FileInputStream fis = new FileInputStream(file);
> Path rootPath = new Path("/files/");
> String filename = "movie.avi";
> bigFile.uploadFile(rootPath,filename,fis,true);
>
> // receive file stream from hadoop.
> Path p = new Path(rootPath,filename);
> InputStream is = bigFile.path2Stream(p,4096);
> {code}
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
