java.lang.Object
- io.trino.plugin.accumulo.AccumuloClient

```
public class AccumuloClient
extends Object
```
This class is the main access point for the Trino connector to interact with Accumulo. It is responsible for creating tables, dropping tables, retrieving table metadata, and getting the ConnectorSplits from a table.

Constructor Summary

Constructors
Constructor	Description
`AccumuloClient(org.apache.accumulo.core.client.Connector connector, AccumuloConfig config, ZooKeeperMetadataManager metaManager, AccumuloTableManager tableManager, IndexLookup indexLookup)`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`createOrReplaceView(SchemaTableName viewName, String viewData)`
`AccumuloTable`	`createTable(ConnectorTableMetadata meta)`
`void`	`createView(SchemaTableName viewName, String viewData)`
`void`	`dropTable(AccumuloTable table)`
`void`	`dropView(SchemaTableName viewName)`
`static Collection<org.apache.accumulo.core.data.Range>`	`getRangesFromDomain(Optional<Domain> domain, AccumuloRowSerializer serializer)`	Gets a collection of Accumulo Range objects from the given Trino domain.
`Set<String>`	`getSchemaNames()`
`AccumuloTable`	`getTable(SchemaTableName table)`
`Set<String>`	`getTableNames(String schema)`
`List<TabletSplitMetadata>`	`getTabletSplits(ConnectorSession session, String schema, String table, Optional<Domain> rowIdDomain, List<AccumuloColumnConstraint> constraints, AccumuloRowSerializer serializer)`	Fetches the TabletSplitMetadata for a query against an Accumulo table.
`AccumuloView`	`getView(SchemaTableName viewName)`
`Set<String>`	`getViewNames(String schema)`
`void`	`renameColumn(AccumuloTable table, String source, String target)`
`void`	`renameTable(SchemaTableName oldName, SchemaTableName newName)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AccumuloClient

@Inject
public AccumuloClient(org.apache.accumulo.core.client.Connector connector,
                      AccumuloConfig config,
                      ZooKeeperMetadataManager metaManager,
                      AccumuloTableManager tableManager,
                      IndexLookup indexLookup)
               throws org.apache.accumulo.core.client.AccumuloException,
                      org.apache.accumulo.core.client.AccumuloSecurityException

Throws:: org.apache.accumulo.core.client.AccumuloException; org.apache.accumulo.core.client.AccumuloSecurityException

Method Detail

createTable

public AccumuloTable createTable(ConnectorTableMetadata meta)

dropTable

public void dropTable(AccumuloTable table)

renameTable

public void renameTable(SchemaTableName oldName,
                        SchemaTableName newName)

createView

public void createView(SchemaTableName viewName,
                       String viewData)

createOrReplaceView

public void createOrReplaceView(SchemaTableName viewName,
                                String viewData)

dropView

public void dropView(SchemaTableName viewName)

renameColumn

public void renameColumn(AccumuloTable table,
                         String source,
                         String target)

getSchemaNames
```
public Set<String> getSchemaNames()
```

getTableNames

public Set<String> getTableNames(String schema)

getTable

public AccumuloTable getTable(SchemaTableName table)

getViewNames

public Set<String> getViewNames(String schema)

getView

public AccumuloView getView(SchemaTableName viewName)

getTabletSplits

public List<TabletSplitMetadata> getTabletSplits(ConnectorSession session,
                                                 String schema,
                                                 String table,
                                                 Optional<Domain> rowIdDomain,
                                                 List<AccumuloColumnConstraint> constraints,
                                                 AccumuloRowSerializer serializer)

Fetches the TabletSplitMetadata for a query against an Accumulo table.

Does a whole bunch of fun stuff! Splitting on row ID ranges, applying secondary indexes, column pruning, all sorts of sweet optimizations. What you have here is an important method.

Parameters:: session - Current session; schema - Schema name; table - Table Name; rowIdDomain - Domain for the row ID; constraints - Column constraints for the query; serializer - Instance of a row serializer
Returns:: List of TabletSplitMetadata objects for Trino

getRangesFromDomain

public static Collection<org.apache.accumulo.core.data.Range> getRangesFromDomain(Optional<Domain> domain,
                                                                                  AccumuloRowSerializer serializer)
                                                                           throws TableNotFoundException

Gets a collection of Accumulo Range objects from the given Trino domain. This maps the column constraints of the given Domain to an Accumulo Range scan.

Parameters:: domain - Domain, can be null (returns (-inf, +inf) Range); serializer - Instance of an AccumuloRowSerializer
Returns:: A collection of Accumulo Range objects
Throws:: TableNotFoundException - If the Accumulo table is not found

Class AccumuloClient