org.apache.drill.exec.metastore.analyze

Class AnalyzeParquetInfoProvider

java.lang.Object

org.apache.drill.exec.metastore.analyze.AnalyzeFileInfoProvider

org.apache.drill.exec.metastore.analyze.AnalyzeParquetInfoProvider

All Implemented Interfaces:

AnalyzeInfoProvider

public class AnalyzeParquetInfoProvider
extends AnalyzeFileInfoProvider

Implementation of AnalyzeInfoProvider for parquet tables.

Field Summary

Fields

Modifier and Type	Field and Description
static AnalyzeParquetInfoProvider	INSTANCE
static String	TABLE_TYPE_NAME

Constructor Summary

Constructors

Constructor and Description
AnalyzeParquetInfoProvider()

Method Summary

Modifier and Type	Method and Description
List<SchemaPath>	getProjectionFields(DrillTable table, MetadataType metadataLevel, ColumnNamesOptions columnNamesOptions) Returns list of fields required for ANALYZE.
String	getTableTypeName() Returns table type name supported by this AnalyzeInfoProvider.
boolean	supportsGroupScan(GroupScan groupScan) Checks whether this AnalyzeInfoProvider supports specified GroupScan type.
boolean	supportsMetadataType(MetadataType metadataType) Checks whether this AnalyzeInfoProvider supports specified MetadataType.

Methods inherited from class org.apache.drill.exec.metastore.analyze.AnalyzeFileInfoProvider

getLocationField, getMetadataInfoCollector, getParentLocationExpression, getSegmentColumns

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final AnalyzeParquetInfoProvider INSTANCE

TABLE_TYPE_NAME

public static final String TABLE_TYPE_NAME

See Also:

Constant Field Values

Constructor Detail

AnalyzeParquetInfoProvider

public AnalyzeParquetInfoProvider()

Method Detail

getProjectionFields

public List<SchemaPath> getProjectionFields(DrillTable table,
                                            MetadataType metadataLevel,
                                            ColumnNamesOptions columnNamesOptions)
                                     throws IOException

Description copied from interface: AnalyzeInfoProvider

Returns list of fields required for ANALYZE.

Specified by:

getProjectionFields in interface AnalyzeInfoProvider

Overrides:

getProjectionFields in class AnalyzeFileInfoProvider

Parameters:

table - drill table

metadataLevel - metadata level for analyze

columnNamesOptions - column names option values

Returns:

list of fields required for ANALYZE

Throws:

IOException

supportsGroupScan

public boolean supportsGroupScan(GroupScan groupScan)

Description copied from interface: AnalyzeInfoProvider

Checks whether this AnalyzeInfoProvider supports specified GroupScan type.

Parameters:

groupScan - group scan

Returns:

true if this AnalyzeInfoProvider supports specified GroupScan type

getTableTypeName

public String getTableTypeName()

Description copied from interface: AnalyzeInfoProvider

Returns table type name supported by this AnalyzeInfoProvider.

Returns:

table type name

supportsMetadataType

public boolean supportsMetadataType(MetadataType metadataType)

Description copied from interface: AnalyzeInfoProvider

Checks whether this AnalyzeInfoProvider supports specified MetadataType.

Parameters:

metadataType - metadata type

Returns:

true if this AnalyzeInfoProvider supports specified MetadataType