io.cdap.cdap.api.dataset.lib

Class AbstractDataset

java.lang.Object

io.cdap.cdap.api.dataset.lib.AbstractDataset

All Implemented Interfaces:

Dataset, MeteredDataset, Closeable, AutoCloseable, org.apache.tephra.TransactionAware

Direct Known Subclasses:

CounterTimeseriesTable, IndexedObjectStore, IndexedTable, KeyValueTable, TimeseriesTable

public abstract class AbstractDataset
extends Object
implements Dataset, MeteredDataset, org.apache.tephra.TransactionAware

Handy abstract implementation of Dataset that acts on a list of underlying datasets and implements TransactionAware and MeteredDataset interfaces by propagating corresponded logic to each dataset in a list when possible.

Constructor Summary

Constructors

Constructor and Description
AbstractDataset(String instanceName, Dataset embedded, Dataset... otherEmbedded)

Method Summary

Modifier and Type	Method and Description
void	close()
boolean	commitTx()
protected String	getName()
String	getTransactionAwareName()
Collection<byte[]>	getTxChanges()
void	postTxCommit()
boolean	rollbackTx()
void	setMetricsCollector(MetricsCollector metricsCollector) Sets data ops metrics collector
void	startTx(org.apache.tephra.Transaction tx)
String	toString()
void	updateTx(org.apache.tephra.Transaction tx)

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractDataset

public AbstractDataset(String instanceName,
                       Dataset embedded,
                       Dataset... otherEmbedded)

Method Detail

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Throws:

IOException

setMetricsCollector

public void setMetricsCollector(MetricsCollector metricsCollector)

Description copied from interface: MeteredDataset

Sets data ops metrics collector

Specified by:

setMetricsCollector in interface MeteredDataset

Parameters:

metricsCollector - metrics collector

startTx

public void startTx(org.apache.tephra.Transaction tx)

Specified by:

startTx in interface org.apache.tephra.TransactionAware

updateTx

public void updateTx(org.apache.tephra.Transaction tx)

Specified by:

updateTx in interface org.apache.tephra.TransactionAware

getTxChanges

public Collection<byte[]> getTxChanges()

Specified by:

getTxChanges in interface org.apache.tephra.TransactionAware

commitTx

public boolean commitTx()
                 throws Exception

Specified by:

commitTx in interface org.apache.tephra.TransactionAware

Throws:

Exception

postTxCommit

public void postTxCommit()

Specified by:

postTxCommit in interface org.apache.tephra.TransactionAware

rollbackTx

public boolean rollbackTx()
                   throws Exception

Specified by:

rollbackTx in interface org.apache.tephra.TransactionAware

Throws:

Exception

getTransactionAwareName

public String getTransactionAwareName()

Specified by:

getTransactionAwareName in interface org.apache.tephra.TransactionAware

getName

protected String getName()

toString

public String toString()

Overrides:

toString in class Object