com.pivotal.gemfirexd.hadoop.mapreduce

Class Row

java.lang.Object

com.pivotal.gemfirexd.hadoop.mapreduce.Row

All Implemented Interfaces:

org.apache.hadoop.io.Writable

Direct Known Subclasses:

Row

public class Row
extends Object
implements org.apache.hadoop.io.Writable

A container of table row impacted by a create, update or delete operation. An instance of this class will provide user with the operation's metadata and row after the DML operation. This includes operation type, operation timestamp, key, column metadata and new values of the columns.

Constructor Summary

Constructors

Constructor and Description
Row()
Row(com.pivotal.gemfirexd.internal.impl.jdbc.EmbedResultSet resultSet)

Method Summary

Methods

Modifier and Type	Method and Description
com.pivotal.gemfirexd.internal.impl.jdbc.EmbedResultSet	getEmbedResultSet()
static com.gemstone.gemfire.cache.hdfs.internal.PersistedEventImpl	getEvent(com.pivotal.gemfirexd.internal.impl.jdbc.EmbedResultSet ers)
Event.Type	getEventType() Get the type of DML operation that changed this row.
static Event.Type	getEventType(com.gemstone.gemfire.cache.hdfs.internal.PersistedEventImpl event)
ResultSet	getRowAsResultSet() Get the changed row as a ResultSet.TYPE_FORWARD_ONLY ResultSet.
long	getTimestamp()
boolean	isPossibleDuplicate() Indicates whether this row change event is a possibly duplicate.
void	readFields(DataInput in)
void	write(DataOutput out)

Methods inherited from class java.lang.Object

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

Constructor Detail

Row

public Row()

Row

public Row(com.pivotal.gemfirexd.internal.impl.jdbc.EmbedResultSet resultSet)

Method Detail

getEmbedResultSet

public final com.pivotal.gemfirexd.internal.impl.jdbc.EmbedResultSet getEmbedResultSet()

getRowAsResultSet

public final ResultSet getRowAsResultSet()
                                  throws IOException

Get the changed row as a ResultSet.TYPE_FORWARD_ONLY ResultSet. The returned ResultSet is already positioned at the returned single row with ResultSet.next() always returning false, whose column values can be retrieved using the ResultSet getter methods.

Returns:

the changed row

Throws:

IOException

isPossibleDuplicate

public boolean isPossibleDuplicate()
                            throws IOException

Indicates whether this row change event is a possibly duplicate. Duplicate events may get persisted on HDFS when a fail-over happens during DML statement execution.

Returns:

true if the event is a possible duplicate.

Throws:

IOException

getEventType

public Event.Type getEventType()
                        throws IOException

Get the type of DML operation that changed this row.

Returns:

the type of this Operation.

Throws:

IOException

getEventType

public static final Event.Type getEventType(com.gemstone.gemfire.cache.hdfs.internal.PersistedEventImpl event)
                                     throws IOException

Throws:

IOException

getTimestamp

public long getTimestamp()
                  throws IOException

Returns:

timestamp when this row operation was executed

Throws:

IOException

getEvent

public static final com.gemstone.gemfire.cache.hdfs.internal.PersistedEventImpl getEvent(com.pivotal.gemfirexd.internal.impl.jdbc.EmbedResultSet ers)
                                                                                  throws IOException

Throws:

IOException

write

public void write(DataOutput out)
           throws IOException

Specified by:

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

Throws:

IOException

readFields

public void readFields(DataInput in)
                throws IOException

Specified by:

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

Throws:

IOException