func toHbaseTScan(scan *TScan) *Hbase.TScan {
if scan == nil {
return nil
}
if scan.FilterString == "" {
return &Hbase.TScan{
StartRow: Hbase.Text(scan.StartRow),
StopRow: Hbase.Text(scan.StopRow),
Timestamp: scan.Timestamp,
Columns: toHbaseTextList(scan.Columns),
Caching: scan.Caching,
FilterString: nil,
}
}
return &Hbase.TScan{
StartRow: Hbase.Text(scan.StartRow),
StopRow: Hbase.Text(scan.StopRow),
Timestamp: scan.Timestamp,
Columns: toHbaseTextList(scan.Columns),
Caching: scan.Caching,
FilterString: Hbase.Text(scan.FilterString),
}
}
func NewTIncrement(table string, row []byte, column string, ammount int64) *Hbase.TIncrement {
return &Hbase.TIncrement{
Table: Hbase.Text(table),
Row: Hbase.Text(row),
Column: Hbase.Text(column),
Ammount: ammount,
}
}
/**
* Get the row just before the specified one.
*
* @return value for specified row/column
*
* Parameters:
* - TableName: name of table
* - Row: row key
* - Family: column name
*/
func (client *HClient) GetRowOrBefore(tableName string, row string, family string) (data []*Hbase.TCell, err error) {
ret, io, e1 := client.hbase.GetRowOrBefore(Hbase.Text(tableName), Hbase.Text(row), Hbase.Text(family))
if err = checkHbaseError(io, e1); err != nil {
return
}
data = ret
return
}
/**
* Get a scanner on the current table starting and stopping at the
* specified rows. ending at the last row in the table. Return the
* specified columns. Only values with the specified timestamp are
* returned.
*
* @return scanner id to be used with other scanner procedures
*
* Parameters:
* - TableName: name of table
* - StartRow: Starting row in table to scan.
* Send "" (empty string) to start at the first row.
* - StopRow: row to stop scanning on. This row is *not* included in the
* scanner's results
* - Columns: columns to scan. If column name is a column family, all
* columns of the specified column family are returned. It's also possible
* to pass a regex in the column qualifier.
* - Timestamp: timestamp
* - Attributes: Scan attributes
*/
func (client *HClient) ScannerOpenWithStopTs(tableName string, startRow []byte, stopRow []byte, columns []string, timestamp int64, attributes map[string]string) (id int32, err error) {
ret, io, e1 := client.hbase.ScannerOpenWithStopTs(Hbase.Text(tableName), Hbase.Text(startRow), Hbase.Text(stopRow), toHbaseTextList(columns), timestamp, toHbaseTextMap(attributes))
if err = checkHbaseError(io, e1); err != nil {
return
}
id = int32(ret)
return
}
/**
* Get the specified number of versions for the specified table,
* row, and column. Only versions less than or equal to the specified
* timestamp will be returned.
*
* @return list of cells for specified row/column
*
* Parameters:
* - TableName: name of table
* - Row: row key
* - Column: column name
* - Timestamp: timestamp
* - NumVersions: number of versions to retrieve
* - Attributes: Get attributes
*/
func (client *HClient) GetVerTs(tableName string, row []byte, column string, timestamp int64, numVersions int32, attributes map[string]string) (data []*Hbase.TCell, err error) {
ret, io, e1 := client.hbase.GetVerTs(Hbase.Text(tableName), Hbase.Text(row), Hbase.Text(column), timestamp, numVersions, toHbaseTextMap(attributes))
if err = checkHbaseError(io, e1); err != nil {
return
}
data = ret
return
}
/**
* Atomically increment the column value specified. Returns the next value post increment.
*
* Parameters:
* - TableName: name of table
* - Row: row to increment
* - Column: name of column
* - Value: amount to increment by
*/
func (client *HClient) AtomicIncrement(tableName string, row []byte, column string, value int64) (v int64, err error) {
ret, io, ia, e1 := client.hbase.AtomicIncrement(Hbase.Text(tableName), Hbase.Text(row), Hbase.Text(column), value)
if err = checkHbaseArgError(io, ia, e1); err != nil {
return
}
v = ret
return
}
/**
* Get the specified columns for the specified table and row at the specified
* timestamp. Returns an empty list if the row does not exist.
*
* @return TRowResult containing the row and map of columns to TCells
*
* Parameters:
* - TableName: name of table
* - Row: row key
* - Columns: List of columns to return, null for all columns
* - Timestamp
* - Attributes: Get attributes
*/
func (client *HClient) GetRowWithColumnsTs(tableName string, row []byte, columns []string, timestamp int64, attributes map[string]string) (data []*Hbase.TRowResult, err error) {
ret, io, e1 := client.hbase.GetRowWithColumnsTs(Hbase.Text(tableName), Hbase.Text(row), toHbaseTextList(columns), timestamp, toHbaseTextMap(attributes))
if err = checkHbaseError(io, e1); err != nil {
return
}
data = ret
return
}
func NewMutation(column string, value []byte) *Hbase.Mutation {
return &Hbase.Mutation{
IsDelete: false,
WriteToWAL: true,
Column: Hbase.Text(column),
Value: Hbase.Text(value),
}
}
/**
* Open a scanner for a given prefix. That is all rows will have the specified
* prefix. No other rows will be returned.
*
* @return scanner id to use with other scanner calls
*
* Parameters:
* - TableName: name of table
* - StartAndPrefix: the prefix (and thus start row) of the keys you want
* - Columns: the columns you want returned
* - Attributes: Scan attributes
*/
func (client *HClient) ScannerOpenWithPrefix(tableName string, startAndPrefix []byte, columns []string, attributes map[string]string) (id int32, err error) {
ret, io, e1 := client.hbase.ScannerOpenWithPrefix(Hbase.Text(tableName), Hbase.Text(startAndPrefix), toHbaseTextList(columns), toHbaseTextMap(attributes))
if err = checkHbaseError(io, e1); err != nil {
return
}
id = int32(ret)
return
}
/**
* Get all the data for the specified table and row at the latest
* timestamp. Returns an empty list if the row does not exist.
*
* @return TRowResult containing the row and map of columns to TCells
*
* Parameters:
* - TableName: name of table
* - Row: row key
* - Attributes: Get attributes
*/
func (client *HClient) GetRow(tableName string, row []byte, attributes map[string]string) (data []*Hbase.TRowResult, err error) {
ret, io, e1 := client.hbase.GetRow(Hbase.Text(tableName), Hbase.Text(row), toHbaseTextMap(attributes))
if err = checkHbaseError(io, e1); err != nil {
return
}
data = ret
return
}
func fromMapStr(data map[string]string) thrift.TMap {
var m thrift.TMap
if data != nil {
m = thrift.NewTMap(thrift.STRING, thrift.STRING, len(data))
for k, v := range data {
m.Set(Hbase.Text(k), Hbase.Text(v))
}
}
return m
}
/**
* Get the row just before the specified one.
*
* @return value for specified row/column
*
* Parameters:
* - TableName: name of table
* - Row: row key
* - Family: column name
*/
func (client *HClient) GetRowOrBefore(tableName string, row string, family string) (data []*TCell, err error) {
if err = client.Open(); err != nil {
return
}
ret, io, e1 := client.thriftClient.GetRowOrBefore(Hbase.Text(tableName), Hbase.Text(row), Hbase.Text(family))
if err = checkHbaseError(io, e1); err != nil {
return
}
data = toListCell(ret)
return
}
/**
* Get the specified columns for the specified table and row at the specified
* timestamp. Returns an empty list if the row does not exist.
*
* @return TRowResult containing the row and map of columns to TCells
*
* Parameters:
* - TableName: name of table
* - Row: row key
* - Columns: List of columns to return, null for all columns
* - Timestamp
* - Attributes: Get attributes
*/
func (client *HClient) GetRowWithColumnsTs(tableName string, row string, columns []string, timestamp int64, attributes map[string]string) (data []*TRowResult, err error) {
if err = client.Open(); err != nil {
return
}
ret, io, e1 := client.thriftClient.GetRowWithColumnsTs(Hbase.Text(tableName), Hbase.Text(row), fromListStr(columns), timestamp, fromMapStr(attributes))
if err = checkHbaseError(io, e1); err != nil {
return
}
data = toListRowResult(ret)
return
}
/**
* Get all the data for the specified table and row at the latest
* timestamp. Returns an empty list if the row does not exist.
*
* @return TRowResult containing the row and map of columns to TCells
*
* Parameters:
* - TableName: name of table
* - Row: row key
* - Attributes: Get attributes
*/
func (client *HClient) GetRow(tableName string, row string, attributes map[string]string) (data []*TRowResult, err error) {
if err = client.Open(); err != nil {
return
}
ret, io, e1 := client.thriftClient.GetRow(Hbase.Text(tableName), Hbase.Text(row), fromMapStr(attributes))
if err = checkHbaseError(io, e1); err != nil {
return
}
data = toListRowResult(ret)
return
}
/**
* Get the specified number of versions for the specified table,
* row, and column. Only versions less than or equal to the specified
* timestamp will be returned.
*
* @return list of cells for specified row/column
*
* Parameters:
* - TableName: name of table
* - Row: row key
* - Column: column name
* - Timestamp: timestamp
* - NumVersions: number of versions to retrieve
* - Attributes: Get attributes
*/
func (client *HClient) GetVerTs(tableName string, row string, column string, timestamp int64, numVersions int32, attributes map[string]string) (data []*TCell, err error) {
if err = client.Open(); err != nil {
return
}
ret, io, e1 := client.thriftClient.GetVerTs(Hbase.Text(tableName), Hbase.Text(row), Hbase.Text(column), timestamp, numVersions, fromMapStr(attributes))
if err = checkHbaseError(io, e1); err != nil {
return
}
data = toListCell(ret)
return
}
/**
* Deletes a table
*
* @throws IOError if table doesn't exist on server or there was some other
* problem
*
* Parameters:
* - TableName: name of table to delete
*/
func (client *HClient) DeleteTable(tableName string) (err error) {
if err = client.Open(); err != nil {
return
}
return checkHbaseError(client.thriftClient.DeleteTable(Hbase.Text(tableName)))
}
/**
* List all the column families assoicated with a table.
*
* @return list of column family descriptors
*
* Parameters:
* - TableName: table name
*/
func (client *HClient) GetColumnDescriptors(tableName string) (columns map[string]*ColumnDescriptor, err error) {
ret, io, e1 := client.hbase.GetColumnDescriptors(Hbase.Text(tableName))
if err = checkHbaseError(io, e1); err != nil {
return
}
columns = toColMap(ret)
return
}
/**
* Create a table with the specified column families. The name
* field for each ColumnDescriptor must be set and must end in a
* colon (:). All other fields are optional and will get default
* values if not explicitly specified.
*
* @throws IllegalArgument if an input parameter is invalid
*
* @throws AlreadyExists if the table name already exists
*
* Parameters:
* - TableName: name of table to create
* - ColumnFamilies: list of column family descriptors
*/
func (client *HClient) CreateTable(tableName string, columnFamilies []*ColumnDescriptor) (exists bool, err error) {
columns := toHbaseColList(columnFamilies)
io, ia, ex, e1 := client.hbase.CreateTable(Hbase.Text(tableName), columns)
if err = checkHbaseArgError(io, ia, e1); err != nil {
return
}
exists = (ex != nil)
return
}
/**
* List the regions associated with a table.
*
* @return list of region descriptors
*
* Parameters:
* - TableName: table name
*/
func (client *HClient) GetTableRegions(tableName string) (regions []*TRegionInfo, err error) {
ret, io, e1 := client.hbase.GetTableRegions(Hbase.Text(tableName))
if err = checkHbaseError(io, e1); err != nil {
return
}
regions = toRegionList(ret)
return
}
/**
* Get the regininfo for the specified row. It scans
* the metatable to find region's start and end keys.
*
* @return value for specified row/column
*
* Parameters:
* - Row: row key
*/
func (client *HClient) GetRegionInfo(row string) (region *TRegionInfo, err error) {
ret, io, e1 := client.hbase.GetRegionInfo(Hbase.Text(row))
if err = checkHbaseError(io, e1); err != nil {
return
}
region = toRegion(ret)
return
}
/**
* Get a scanner on the current table, using the Scan instance
* for the scan parameters.
*
* Parameters:
* - TableName: name of table
* - Scan: Scan instance
* - Attributes: Scan attributes
*/
func (client *HClient) ScannerOpenWithScan(tableName string, scan *TScan, attributes map[string]string) (id int32, err error) {
ret, io, e1 := client.hbase.ScannerOpenWithScan(Hbase.Text(tableName), toHbaseTScan(scan), toHbaseTextMap(attributes))
if err = checkHbaseError(io, e1); err != nil {
return
}
id = int32(ret)
return
}
/**
* Create a table with the specified column families. The name
* field for each ColumnDescriptor must be set and must end in a
* colon (:). All other fields are optional and will get default
* values if not explicitly specified.
*
* @throws IllegalArgument if an input parameter is invalid
*
* @throws AlreadyExists if the table name already exists
*
* Parameters:
* - TableName: name of table to create
* - ColumnFamilies: list of column family descriptors
*/
func (client *HClient) CreateTable(tableName string, columnFamilies []*ColumnDescriptor) (exist *AlreadyExists, err error) {
if err = client.Open(); err != nil {
return
}
columns := fromColumns(columnFamilies)
io, ia, ex, e1 := client.thriftClient.CreateTable(Hbase.Text(tableName), columns)
err = checkHbaseArgError(io, ia, e1)
exist = toAlreadyExists(ex)
return
}
func toHbaseTextListFromByte(list [][]byte) []Hbase.Text {
if list == nil {
return nil
}
l := len(list)
data := make([]Hbase.Text, l)
for i := 0; i < l; i++ {
data[i] = Hbase.Text(list[i])
}
return data
}
func toHbaseTextMap(source map[string]string) map[string]Hbase.Text {
if source == nil {
return nil
}
data := make(map[string]Hbase.Text, len(source))
for k, v := range source {
data[k] = Hbase.Text(v)
}
return data
}
/**
* Get the specified columns for the specified table and rows at the latest
* timestamp. Returns an empty list if no rows exist.
*
* @return TRowResult containing the rows and map of columns to TCells
*
* Parameters:
* - TableName: name of table
* - Rows: row keys
* - Columns: List of columns to return, null for all columns
* - Attributes: Get attributes
*/
func (client *HClient) GetRowsWithColumns(tableName string, rows [][]byte, columns []string, attributes map[string]string) (data []*Hbase.TRowResult, err error) {
if err = client.Open(); err != nil {
return
}
ret, io, e1 := client.hbase.GetRowsWithColumns(Hbase.Text(tableName), toHbaseTextListFromByte(rows), toHbaseTextList(columns), toHbaseTextMap(attributes))
if err = checkHbaseError(io, e1); err != nil {
return
}
data = ret
return
}
func fromListStr(list []string) thrift.TList {
if list == nil {
return nil
}
l := len(list)
data := thrift.NewTList(thrift.STRING, l)
for i := 0; i < l; i++ {
//data.Set(i, Hbase.Text(list[i]))
data.Push(Hbase.Text(list[i]))
}
return data
}
func toHbaseColumn(col *ColumnDescriptor) *Hbase.ColumnDescriptor {
return &Hbase.ColumnDescriptor{
Name: Hbase.Text(col.Name),
MaxVersions: col.MaxVersions,
Compression: col.Compression,
InMemory: col.InMemory,
BloomFilterType: col.BloomFilterType,
BloomFilterVectorSize: col.BloomFilterVectorSize,
BloomFilterNbHashes: col.BloomFilterNbHashes,
BlockCacheEnabled: col.BlockCacheEnabled,
TimeToLive: col.TimeToLive,
}
}
func fromColumns(columnFamilies []*ColumnDescriptor) thrift.TList {
l := len(columnFamilies)
columns := thrift.NewTListDefault()
for i := 0; i < l; i++ {
col := columnFamilies[i]
hbaseColumn := &Hbase.ColumnDescriptor{
Name: Hbase.Text(col.Name),
MaxVersions: col.MaxVersions,
Compression: col.Compression,
InMemory: col.InMemory,
BloomFilterType: col.BloomFilterType,
BloomFilterVectorSize: col.BloomFilterVectorSize,
BloomFilterNbHashes: col.BloomFilterNbHashes,
BlockCacheEnabled: col.BlockCacheEnabled,
TimeToLive: col.TimeToLive,
}
columns.Push(hbaseColumn)
}
return columns
}
/**
* Completely delete the row's cells marked with a timestamp
* equal-to or older than the passed timestamp.
*
* Parameters:
* - TableName: name of table
* - Row: key of the row to be completely deleted.
* - Timestamp: timestamp
* - Attributes: Delete attributes
*/
func (client *HClient) DeleteAllRowTs(tableName string, row []byte, timestamp int64, attributes map[string]string) error {
return checkHbaseError(client.hbase.DeleteAllRowTs(Hbase.Text(tableName), Hbase.Text(row), timestamp, toHbaseTextMap(attributes)))
}
/**
* Delete all cells that match the passed row and column.
*
* Parameters:
* - TableName: name of table
* - Row: Row to update
* - Column: name of column whose value is to be deleted
* - Attributes: Delete attributes
*/
func (client *HClient) DeleteAll(tableName string, row []byte, column string, attributes map[string]string) error {
return checkHbaseError(client.hbase.DeleteAll(Hbase.Text(tableName), Hbase.Text(row), Hbase.Text(column), toHbaseTextMap(attributes)))
}
