org.apache.spark.sql.util

Class CaseInsensitiveStringMap

Object

org.apache.spark.sql.util.CaseInsensitiveStringMap

All Implemented Interfaces:

java.util.Map<String,String>

@Experimental
public class CaseInsensitiveStringMap
extends Object
implements java.util.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

java.util.Map.Entry<K,V>

Constructor Summary

Constructors

Constructor and Description
CaseInsensitiveStringMap(java.util.Map<String,String> originalMap)

Method Summary

Modifier and Type	Method and Description
java.util.Map<String,String>	asCaseSensitiveMap() Returns the original case-sensitive map.
void	clear()
boolean	containsKey(Object key)
boolean	containsValue(Object value)
static CaseInsensitiveStringMap	empty()
java.util.Set<java.util.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()
java.util.Set<String>	keySet()
String	put(String key, String value)
void	putAll(java.util.Map<? extends String,? extends String> m)
String	remove(Object key)
int	size()
java.util.Collection<String>	values()

Methods inherited from class 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 Detail

CaseInsensitiveStringMap

public CaseInsensitiveStringMap(java.util.Map<String,String> originalMap)

Method Detail

empty

public static CaseInsensitiveStringMap empty()

size

public int size()

Specified by:

size in interface java.util.Map<String,String>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface java.util.Map<String,String>

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface java.util.Map<String,String>

containsValue

public boolean containsValue(Object value)

Specified by:

containsValue in interface java.util.Map<String,String>

get

public String get(Object key)

Specified by:

get in interface java.util.Map<String,String>

put

public String put(String key,
                  String value)

Specified by:

put in interface java.util.Map<String,String>

remove

public String remove(Object key)

Specified by:

remove in interface java.util.Map<String,String>

putAll

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

Specified by:

putAll in interface java.util.Map<String,String>

clear

public void clear()

Specified by:

clear in interface java.util.Map<String,String>

keySet

public java.util.Set<String> keySet()

Specified by:

keySet in interface java.util.Map<String,String>

values

public java.util.Collection<String> values()

Specified by:

values in interface java.util.Map<String,String>

entrySet

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

Specified by:

entrySet in interface java.util.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 java.util.Map<String,String> asCaseSensitiveMap()

Returns the original case-sensitive map.

equals

public boolean equals(Object o)

Specified by:

equals in interface java.util.Map<String,String>

Overrides:

equals in class Object

hashCode

public int hashCode()

Specified by:

hashCode in interface java.util.Map<String,String>

Overrides:

hashCode in class Object