org.apache.parquet.column

Class ColumnDescriptor

java.lang.Object

org.apache.parquet.column.ColumnDescriptor

All Implemented Interfaces:

Comparable<ColumnDescriptor>

public class ColumnDescriptor
extends Object
implements Comparable<ColumnDescriptor>

Describes a column's type as well as its position in its containing schema.

Author:

Julien Le Dem

Constructor Summary

Constructors

Constructor and Description
ColumnDescriptor(String[] path, PrimitiveType.PrimitiveTypeName type, int maxRep, int maxDef)
ColumnDescriptor(String[] path, PrimitiveType.PrimitiveTypeName type, int typeLength, int maxRep, int maxDef)

Method Summary

Methods

Modifier and Type	Method and Description
int	compareTo(ColumnDescriptor o)
boolean	equals(Object obj)
int	getMaxDefinitionLevel()
int	getMaxRepetitionLevel()
String[]	getPath()
PrimitiveType.PrimitiveTypeName	getType()
int	getTypeLength()
int	hashCode()
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

ColumnDescriptor

public ColumnDescriptor(String[] path,
                PrimitiveType.PrimitiveTypeName type,
                int maxRep,
                int maxDef)

Parameters:

path - the path to the leaf field in the schema

type - the type of the field

maxRep - the maximum repetition level for that path

maxDef - the maximum definition level for that path

ColumnDescriptor

public ColumnDescriptor(String[] path,
                PrimitiveType.PrimitiveTypeName type,
                int typeLength,
                int maxRep,
                int maxDef)

Parameters:

path - the path to the leaf field in the schema

type - the type of the field

maxRep - the maximum repetition level for that path

maxDef - the maximum definition level for that path

Method Detail

getPath

public String[] getPath()

Returns:

the path to the leaf field in the schema

getMaxRepetitionLevel

public int getMaxRepetitionLevel()

Returns:

the maximum repetition level for that path

getMaxDefinitionLevel

public int getMaxDefinitionLevel()

Returns:

the maximum definition level for that path

getType

public PrimitiveType.PrimitiveTypeName getType()

Returns:

the type of that column

getTypeLength

public int getTypeLength()

Returns:

the size of the type

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

compareTo

public int compareTo(ColumnDescriptor o)

Specified by:

compareTo in interface Comparable<ColumnDescriptor>

toString

public String toString()

Overrides:

toString in class Object