Package org.apache.drill.exec.metastore.store

Class SimpleFileTableMetadataProvider

java.lang.Object

org.apache.drill.exec.metastore.store.SimpleFileTableMetadataProvider

All Implemented Interfaces:

TableMetadataProvider

public class SimpleFileTableMetadataProvider
extends Object
implements TableMetadataProvider

Metadata provider which supplies only table schema and / or table statistics if available.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	SimpleFileTableMetadataProvider.Builder

Method Summary

Modifier and Type	Method	Description
boolean	checkMetadataVersion()	Whether metadata actuality should be checked.
FileMetadata	getFileMetadata(org.apache.hadoop.fs.Path location)	Returns FileMetadata instance which corresponds to metadata of file for specified location.
List<FileMetadata>	getFilesForPartition(PartitionMetadata partition)	Returns list of FileMetadata instances which belongs to specified partitions.
Map<org.apache.hadoop.fs.Path,FileMetadata>	getFilesMetadataMap()	Returns map of FileMetadata instances which provides metadata for specific file and its columns.
NonInterestingColumnsMetadata	getNonInterestingColumnsMetadata()	Returns NonInterestingColumnsMetadata instance which provides metadata for non-interesting columns.
List<SchemaPath>	getPartitionColumns()	Returns list of partition columns for table from this TableMetadataProvider.
List<PartitionMetadata>	getPartitionMetadata(SchemaPath columnName)	Returns list of PartitionMetadata instances which corresponds to partitions for specified column and provides metadata for specific partitions and its columns.
List<PartitionMetadata>	getPartitionsMetadata()	Returns list of PartitionMetadata instances which provides metadata for specific partitions and its columns.
Map<org.apache.hadoop.fs.Path,SegmentMetadata>	getSegmentsMetadataMap()	Returns map of SegmentMetadata instances which provides metadata for segment and its columns.
TableMetadata	getTableMetadata()	Returns TableMetadata instance which provides metadata for table and columns metadata.

Methods inherited from class java.lang.Object

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

Method Details

getTableMetadata

public TableMetadata getTableMetadata()

Description copied from interface: TableMetadataProvider

Returns TableMetadata instance which provides metadata for table and columns metadata.

Specified by:

getTableMetadata in interface TableMetadataProvider

Returns:

TableMetadata instance

getPartitionColumns

public List<SchemaPath> getPartitionColumns()

Description copied from interface: TableMetadataProvider

Returns list of partition columns for table from this TableMetadataProvider.

Specified by:

getPartitionColumns in interface TableMetadataProvider

Returns:

list of partition columns

getPartitionsMetadata

public List<PartitionMetadata> getPartitionsMetadata()

Description copied from interface: TableMetadataProvider

Returns list of PartitionMetadata instances which provides metadata for specific partitions and its columns.

Specified by:

getPartitionsMetadata in interface TableMetadataProvider

Returns:

list of PartitionMetadata instances

getPartitionMetadata

public List<PartitionMetadata> getPartitionMetadata(SchemaPath columnName)

Description copied from interface: TableMetadataProvider

Returns list of PartitionMetadata instances which corresponds to partitions for specified column and provides metadata for specific partitions and its columns.

Specified by:

getPartitionMetadata in interface TableMetadataProvider

Returns:

list of PartitionMetadata instances which corresponds to partitions for specified column

getFilesMetadataMap

public Map<org.apache.hadoop.fs.Path,FileMetadata> getFilesMetadataMap()

Description copied from interface: TableMetadataProvider

Returns map of FileMetadata instances which provides metadata for specific file and its columns.

Specified by:

getFilesMetadataMap in interface TableMetadataProvider

Returns:

map of FileMetadata instances

getSegmentsMetadataMap

public Map<org.apache.hadoop.fs.Path,SegmentMetadata> getSegmentsMetadataMap()

Description copied from interface: TableMetadataProvider

Returns map of SegmentMetadata instances which provides metadata for segment and its columns.

Specified by:

getSegmentsMetadataMap in interface TableMetadataProvider

Returns:

map of SegmentMetadata instances

getFileMetadata

public FileMetadata getFileMetadata(org.apache.hadoop.fs.Path location)

Description copied from interface: TableMetadataProvider

Returns FileMetadata instance which corresponds to metadata of file for specified location.

Specified by:

getFileMetadata in interface TableMetadataProvider

Parameters:

location - location of the file

Returns:

FileMetadata instance which corresponds to metadata of file for specified location

getFilesForPartition

public List<FileMetadata> getFilesForPartition(PartitionMetadata partition)

Description copied from interface: TableMetadataProvider

Returns list of FileMetadata instances which belongs to specified partitions.

Specified by:

getFilesForPartition in interface TableMetadataProvider

Parameters:

partition - partition which

Returns:

list of FileMetadata instances which belongs to specified partitions

getNonInterestingColumnsMetadata

public NonInterestingColumnsMetadata getNonInterestingColumnsMetadata()

Description copied from interface: TableMetadataProvider

Returns NonInterestingColumnsMetadata instance which provides metadata for non-interesting columns.

Specified by:

getNonInterestingColumnsMetadata in interface TableMetadataProvider

Returns:

NonInterestingColumnsMetadata instance

checkMetadataVersion

public boolean checkMetadataVersion()

Description copied from interface: TableMetadataProvider

Whether metadata actuality should be checked.

Specified by:

checkMetadataVersion in interface TableMetadataProvider

Returns:

true if metadata actuality should be checked