Golang Hbase.Text函数代码示例

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
}

/**
 * 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
}