Package org.apache.druid.segment

Class AutoTypeColumnSchema

java.lang.Object

org.apache.druid.data.input.impl.DimensionSchema

org.apache.druid.segment.AutoTypeColumnSchema

public class AutoTypeColumnSchema
extends DimensionSchema

Common DimensionSchema for ingestion of 'standard' Druid built-in ColumnType datatypes. Automatically determines the most appropriate type for the given input data, able to produce columns of type: ColumnType.STRING ColumnType.STRING_ARRAY ColumnType.LONG ColumnType.LONG_ARRAY ColumnType.DOUBLE ColumnType.DOUBLE_ARRAY ColumnType.NESTED_DATA and includes bitmap value set indexes. Input of mixed type will be stored as ColumnType.NESTED_DATA.

See Also:

• AutoTypeColumnIndexer
• AutoTypeColumnMerger
• NestedCommonFormatColumnSerializer
• VariantColumnSerializer
• ScalarDoubleColumnSerializer
• ScalarLongColumnSerializer
• NestedDataColumnSerializer
• ScalarStringColumnSerializer
• NestedCommonFormatColumnPartSerde
• NestedCommonFormatColumn

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.druid.data.input.impl.DimensionSchema

DimensionSchema.MultiValueHandling

Field Summary

Fields

Modifier and Type	Field	Description
static final String	TYPE

Fields inherited from class org.apache.druid.data.input.impl.DimensionSchema

DOUBLE_TYPE_NAME, FLOAT_TYPE_NAME, LONG_TYPE_NAME, SPATIAL_TYPE_NAME, STRING_TYPE_NAME

Constructor Summary

Constructors

Constructor	Description
AutoTypeColumnSchema(String name, ColumnType castToType, NestedCommonFormatColumnFormatSpec columnFormatSpec)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)
ColumnType	getCastToType()
NestedCommonFormatColumnFormatSpec	getColumnFormatSpec()
ColumnType	getColumnType()
DimensionHandler<StructuredData,StructuredData,StructuredData>	getDimensionHandler()
DimensionSchema	getEffectiveSchema(IndexSpec indexSpec)	Computes the 'effective' DimensionSchema, allowing columns which provide mechanisms for customizing storage format to fill in values from the segment level IndexSpec defaults.
String	getTypeName()
int	hashCode()
static AutoTypeColumnSchema	of(String name)
String	toString()

Methods inherited from class org.apache.druid.data.input.impl.DimensionSchema

getDefaultSchemaForBuiltInType, getMultiValueHandling, getName, hasBitmapIndex

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

TYPE

public static final String TYPE

See Also:

• Constant Field Values

Constructor Details

AutoTypeColumnSchema

public AutoTypeColumnSchema(String name,
 @Nullable
 ColumnType castToType,
 @Nullable
 NestedCommonFormatColumnFormatSpec columnFormatSpec)

Method Details

of

public static AutoTypeColumnSchema of(String name)

getTypeName

public String getTypeName()

Specified by:

getTypeName in class DimensionSchema

getColumnType

public ColumnType getColumnType()

Specified by:

getColumnType in class DimensionSchema

getCastToType

@Nullable
public ColumnType getCastToType()

getColumnFormatSpec

@Nullable
public NestedCommonFormatColumnFormatSpec getColumnFormatSpec()

getDimensionHandler

public DimensionHandler<StructuredData,StructuredData,StructuredData> getDimensionHandler()

Overrides:

getDimensionHandler in class DimensionSchema

getEffectiveSchema

public DimensionSchema getEffectiveSchema(IndexSpec indexSpec)

Description copied from class: DimensionSchema

Computes the 'effective' DimensionSchema, allowing columns which provide mechanisms for customizing storage format to fill in values from the segment level IndexSpec defaults. This is useful for comparising the operator explicitly defined schema with the 'effective' schema that was written to the segments for things like comparing compaction state.

Overrides:

getEffectiveSchema in class DimensionSchema

equals

public boolean equals(Object o)

Overrides:

equals in class DimensionSchema

hashCode

public int hashCode()

Overrides:

hashCode in class DimensionSchema

toString

public String toString()

Overrides:

toString in class DimensionSchema