Package org.apache.spark.sql.util

Class CaseInsensitiveStringMap

Object

org.apache.spark.sql.util.CaseInsensitiveStringMap

All Implemented Interfaces:

Map<String,String>

@Experimental
public class CaseInsensitiveStringMap
extends Object
implements Map<String,String>

Case-insensitive map of string keys to string values.

This is used to pass options to v2 implementations to ensure consistent case insensitivity.

Methods that return keys in this map, like entrySet() and keySet(), return keys converted to lower case. This map doesn't allow null key.

Since:

3.0.0

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K extends Object,V extends Object>

Constructor Summary

Constructors

Constructor	Description
CaseInsensitiveStringMap(Map<String,String> originalMap)

Method Summary

Modifier and Type	Method	Description
Map<String,String>	asCaseSensitiveMap()	Returns the original case-sensitive map.
void	clear()
boolean	containsKey(Object key)
boolean	containsValue(Object value)
static CaseInsensitiveStringMap	empty()
Set<Map.Entry<String,String>>	entrySet()
boolean	equals(Object o)
String	get(Object key)
boolean	getBoolean(String key, boolean defaultValue)	Returns the boolean value to which the specified key is mapped, or defaultValue if there is no mapping for the key.
double	getDouble(String key, double defaultValue)	Returns the double value to which the specified key is mapped, or defaultValue if there is no mapping for the key.
int	getInt(String key, int defaultValue)	Returns the integer value to which the specified key is mapped, or defaultValue if there is no mapping for the key.
long	getLong(String key, long defaultValue)	Returns the long value to which the specified key is mapped, or defaultValue if there is no mapping for the key.
int	hashCode()
boolean	isEmpty()
Set<String>	keySet()
String	put(String key, String value)
void	putAll(Map<? extends String,? extends String> m)
String	remove(Object key)
int	size()
Collection<String>	values()

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll

Constructor Details

CaseInsensitiveStringMap

public CaseInsensitiveStringMap(Map<String,String> originalMap)

Method Details

empty

public static CaseInsensitiveStringMap empty()

size

public int size()

Specified by:

size in interface Map<String,String>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<String,String>

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map<String,String>

containsValue

public boolean containsValue(Object value)

Specified by:

containsValue in interface Map<String,String>

get

public String get(Object key)

Specified by:

get in interface Map<String,String>

put

public String put(String key,
 String value)

Specified by:

put in interface Map<String,String>

remove

public String remove(Object key)

Specified by:

remove in interface Map<String,String>

putAll

public void putAll(Map<? extends String,? extends String> m)

Specified by:

putAll in interface Map<String,String>

clear

public void clear()

Specified by:

clear in interface Map<String,String>

keySet

public Set<String> keySet()

Specified by:

keySet in interface Map<String,String>

values

public Collection<String> values()

Specified by:

values in interface Map<String,String>

entrySet

public Set<Map.Entry<String,String>> entrySet()

Specified by:

entrySet in interface Map<String,String>

getBoolean

public boolean getBoolean(String key,
 boolean defaultValue)

Returns the boolean value to which the specified key is mapped, or defaultValue if there is no mapping for the key. The key match is case-insensitive.

getInt

public int getInt(String key,
 int defaultValue)

Returns the integer value to which the specified key is mapped, or defaultValue if there is no mapping for the key. The key match is case-insensitive.

getLong

public long getLong(String key,
 long defaultValue)

Returns the long value to which the specified key is mapped, or defaultValue if there is no mapping for the key. The key match is case-insensitive.

getDouble

public double getDouble(String key,
 double defaultValue)

Returns the double value to which the specified key is mapped, or defaultValue if there is no mapping for the key. The key match is case-insensitive.

asCaseSensitiveMap

public Map<String,String> asCaseSensitiveMap()

Returns the original case-sensitive map.

equals

public boolean equals(Object o)

Specified by:

equals in interface Map<String,String>

Overrides:

equals in class Object

hashCode

public int hashCode()

Specified by:

hashCode in interface Map<String,String>

Overrides:

hashCode in class Object