Package org.apache.drill.exec.store.cassandra

Class CassandraStoragePlugin

java.lang.Object

org.apache.drill.exec.store.AbstractStoragePlugin

org.apache.drill.exec.store.cassandra.CassandraStoragePlugin

All Implemented Interfaces:

AutoCloseable, SchemaFactory, StoragePlugin

public class CassandraStoragePlugin
extends AbstractStoragePlugin

Field Summary

Fields inherited from class org.apache.drill.exec.store.AbstractStoragePlugin

context

Fields inherited from interface org.apache.drill.exec.store.SchemaFactory

DEFAULT_WS_NAME

Constructor Summary

Constructors

Constructor	Description
CassandraStoragePlugin(CassandraStorageConfig config, DrillbitContext context, String name)

Method Summary

Modifier and Type	Method	Description
CassandraStorageConfig	getConfig()	Method returns a Jackson serializable object that extends a StoragePluginConfig.
Set<? extends org.apache.calcite.plan.RelOptRule>	getOptimizerRules(OptimizerRulesContext optimizerContext, PlannerPhase phase)	An implementation of this method will return one or more specialized rules that Drill query optimizer can leverage in physical space.
void	registerSchemas(SchemaConfig schemaConfig, org.apache.calcite.schema.SchemaPlus parent)	Register the schemas provided by this SchemaFactory implementation under the given parent schema.
boolean	supportsRead()	Indicates if Drill can read the table from this format.

Methods inherited from class org.apache.drill.exec.store.AbstractStoragePlugin

close, getContext, getFormatPlugin, getName, getPhysicalScan, getPhysicalScan, getPhysicalScan, getPhysicalScan, getPhysicalScan, getPhysicalScan, onDisabled, onEnabled, start, supportsInsert, supportsWrite, toString

Methods inherited from class java.lang.Object

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

Constructor Details

CassandraStoragePlugin

public CassandraStoragePlugin(CassandraStorageConfig config,
 DrillbitContext context,
 String name)

Method Details

registerSchemas

public void registerSchemas(SchemaConfig schemaConfig,
 org.apache.calcite.schema.SchemaPlus parent)
                     throws IOException

Description copied from interface: SchemaFactory

Register the schemas provided by this SchemaFactory implementation under the given parent schema.

Parameters:

schemaConfig - Configuration for schema objects.

parent - Reference to parent schema.

Throws:

IOException - in case of error during schema registration

getConfig

public CassandraStorageConfig getConfig()

Description copied from interface: StoragePlugin

Method returns a Jackson serializable object that extends a StoragePluginConfig.

Returns:

an extension of StoragePluginConfig

supportsRead

public boolean supportsRead()

Description copied from interface: StoragePlugin

Indicates if Drill can read the table from this format.

Specified by:

supportsRead in interface StoragePlugin

Overrides:

supportsRead in class AbstractStoragePlugin

getOptimizerRules

public Set<? extends org.apache.calcite.plan.RelOptRule> getOptimizerRules(OptimizerRulesContext optimizerContext,
 PlannerPhase phase)

Description copied from interface: StoragePlugin

An implementation of this method will return one or more specialized rules that Drill query optimizer can leverage in physical space. Otherwise, it should return an empty set.

Returns:

an empty set or a set of plugin specific physical optimizer rules.