org.apache.hadoop.hbase.filter
Class PrefixRowFilter

java.lang.Object
  org.apache.hadoop.hbase.filter.PrefixRowFilter

All Implemented Interfaces:

RowFilterInterface, org.apache.hadoop.io.Writable

Deprecated. Use filters that are rooted on @{link Filter} instead

public class PrefixRowFilter
extends Object
implements RowFilterInterface

RowFilterInterface that filters everything that does not match a prefix

Field Summary

protected byte[]

prefix Deprecated.

Constructor Summary

PrefixRowFilter()
Deprecated. Default Constructor, filters nothing.

PrefixRowFilter(byte[] prefix)
Deprecated. Constructor that takes a row prefix to filter on

Method Summary

boolean	filterAllRemaining() Deprecated. Determines if the filter has decided that all remaining results should be filtered (skipped).
boolean	filterColumn(byte[] rowKey, byte[] colunmName, byte[] columnValue) Deprecated. Filters on row key, column name, and column value.
boolean	filterColumn(byte[] rowKey, int roffset, int rlength, byte[] colunmName, int coffset, int clength, byte[] columnValue, int voffset, int vlength) Deprecated. Filters on row key, column name, and column value.
boolean	filterRow(List<KeyValue> results) Deprecated. Filter on the fully assembled row.
boolean	filterRow(SortedMap<byte[],Cell> columns) Deprecated. Filter on the fully assembled row.
boolean	filterRowKey(byte[] rowKey) Deprecated. Filters on just a row key.
boolean	filterRowKey(byte[] rowKey, int offset, int length) Deprecated. Filters on just a row key.
boolean	processAlways() Deprecated. Returns whether or not the filter should always be processed in any filtering call.
void	readFields(DataInput in) Deprecated.
void	reset() Deprecated. Resets the state of the filter.
void	rowProcessed(boolean filtered, byte[] key) Deprecated. Called to let filter know the final decision (to pass or filter) on a given row.
void	rowProcessed(boolean filtered, byte[] key, int offset, int length) Deprecated. Called to let filter know the final decision (to pass or filter) on a given row.
void	validate(byte[][] columns) Deprecated. Validates that this filter applies only to a subset of the given columns.
void	write(DataOutput out) Deprecated.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

prefix

protected byte[] prefix

Deprecated.

Constructor Detail

PrefixRowFilter

public PrefixRowFilter(byte[] prefix)

Deprecated.

Constructor that takes a row prefix to filter on

Parameters:

prefix -

PrefixRowFilter

public PrefixRowFilter()

Deprecated.

Default Constructor, filters nothing. Required for RPC deserialization

Method Detail

reset

public void reset()

Deprecated.

Description copied from interface: RowFilterInterface

Resets the state of the filter. Used prior to the start of a Region scan.

Specified by:

reset in interface RowFilterInterface

rowProcessed

public void rowProcessed(boolean filtered,
                         byte[] key)

Deprecated.

Description copied from interface: RowFilterInterface

Called to let filter know the final decision (to pass or filter) on a given row. With out HScanner calling this, the filter does not know if a row passed filtering even if it passed the row itself because other filters may have failed the row. E.g. when this filter is a member of a RowFilterSet with an OR operator.

Specified by:

rowProcessed in interface RowFilterInterface

See Also:

RowFilterSet

rowProcessed

public void rowProcessed(boolean filtered,
                         byte[] key,
                         int offset,
                         int length)

Deprecated.

Description copied from interface: RowFilterInterface

Called to let filter know the final decision (to pass or filter) on a given row. With out HScanner calling this, the filter does not know if a row passed filtering even if it passed the row itself because other filters may have failed the row. E.g. when this filter is a member of a RowFilterSet with an OR operator.

Specified by:

rowProcessed in interface RowFilterInterface

See Also:

RowFilterSet

processAlways

public boolean processAlways()

Deprecated.

Description copied from interface: RowFilterInterface

Returns whether or not the filter should always be processed in any filtering call. This precaution is necessary for filters that maintain state and need to be updated according to their response to filtering calls (see WhileMatchRowFilter for an example). At times, filters nested in RowFilterSets may or may not be called because the RowFilterSet determines a result as fast as possible. Returning true for processAlways() ensures that the filter will always be called.

Specified by:

processAlways in interface RowFilterInterface

Returns:

whether or not to always process the filter

filterAllRemaining

public boolean filterAllRemaining()

Deprecated.

Description copied from interface: RowFilterInterface

Determines if the filter has decided that all remaining results should be filtered (skipped). This is used to prevent the scanner from scanning a the rest of the HRegion when for sure the filter will exclude all remaining rows.

Specified by:

filterAllRemaining in interface RowFilterInterface

Returns:

true if the filter intends to filter all remaining rows.

filterRowKey

public boolean filterRowKey(byte[] rowKey)

Deprecated.

Description copied from interface: RowFilterInterface

Filters on just a row key. This is the first chance to stop a row.

Specified by:

filterRowKey in interface RowFilterInterface

Returns:

true if given row key is filtered and row should not be processed.

filterRowKey

public boolean filterRowKey(byte[] rowKey,
                            int offset,
                            int length)

Deprecated.

Description copied from interface: RowFilterInterface

Filters on just a row key. This is the first chance to stop a row.

Specified by:

filterRowKey in interface RowFilterInterface

Returns:

true if given row key is filtered and row should not be processed.

filterColumn

public boolean filterColumn(byte[] rowKey,
                            byte[] colunmName,
                            byte[] columnValue)

Deprecated.

Description copied from interface: RowFilterInterface

Filters on row key, column name, and column value. This will take individual columns out of a row, but the rest of the row will still get through.

Specified by:

filterColumn in interface RowFilterInterface

Parameters:

rowKey - row key to filter on.

colunmName - column name to filter on

columnValue - column value to filter on

Returns:

true if row filtered and should not be processed.

filterColumn

public boolean filterColumn(byte[] rowKey,
                            int roffset,
                            int rlength,
                            byte[] colunmName,
                            int coffset,
                            int clength,
                            byte[] columnValue,
                            int voffset,
                            int vlength)

Deprecated.

Description copied from interface: RowFilterInterface

Filters on row key, column name, and column value. This will take individual columns out of a row, but the rest of the row will still get through.

Specified by:

filterColumn in interface RowFilterInterface

Parameters:

rowKey - row key to filter on.

colunmName - column name to filter on

columnValue - column value to filter on

Returns:

true if row filtered and should not be processed.

filterRow

public boolean filterRow(SortedMap<byte[],Cell> columns)

Deprecated.

Description copied from interface: RowFilterInterface

Filter on the fully assembled row. This is the last chance to stop a row.

Specified by:

filterRow in interface RowFilterInterface

Returns:

true if row filtered and should not be processed.

filterRow

public boolean filterRow(List<KeyValue> results)

Deprecated.

Description copied from interface: RowFilterInterface

Filter on the fully assembled row. This is the last chance to stop a row.

Specified by:

filterRow in interface RowFilterInterface

Returns:

true if row filtered and should not be processed.

validate

public void validate(byte[][] columns)

Deprecated.

Description copied from interface: RowFilterInterface

Validates that this filter applies only to a subset of the given columns. This check is done prior to opening of scanner due to the limitation that filtering of columns is dependent on the retrieval of those columns within the HRegion. Criteria on columns that are not part of a scanner's column list will be ignored. In the case of null value filters, all rows will pass the filter. This behavior should be 'undefined' for the user and therefore not permitted.

Specified by:

validate in interface RowFilterInterface

readFields

public void readFields(DataInput in)
                throws IOException

Deprecated.

Specified by:

readFields in interface org.apache.hadoop.io.Writable

Throws:

IOException

write

public void write(DataOutput out)
           throws IOException

Deprecated.

Specified by:

write in interface org.apache.hadoop.io.Writable

Throws:

IOException