Package org.jxls.jdbc

Class CaseInsensitiveHashMap

java.lang.Object

java.util.AbstractMap<K,V>

java.util.HashMap<K,V>

java.util.LinkedHashMap<String,Object>

org.jxls.jdbc.CaseInsensitiveHashMap

All Implemented Interfaces:

Serializable, Cloneable, Map<String,Object>

public class CaseInsensitiveHashMap
extends LinkedHashMap<String,Object>

This class is taken from Apache Commons DbUtils library (https://commons.apache.org/proper/commons-dbutils/) A Map that converts all keys to lowercase Strings for case insensitive lookups. This is needed for the toMap() implementation because databases don't consistently handle the casing of column names.

The keys are stored as they are given [BUG #DBUTILS-34], so we maintain an internal mapping from lowercase keys to the real keys in order to achieve the case insensitive lookup.

Note: This implementation does not allow null for key, whereas LinkedHashMap does, because of the code:

 key.toString().toLowerCase()
 

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

AbstractMap.SimpleEntry<K extends Object,V extends Object>, AbstractMap.SimpleImmutableEntry<K extends Object,V extends Object>

Constructor Summary

Constructors

Constructor	Description
CaseInsensitiveHashMap()

Method Summary

Modifier and Type	Method	Description
boolean	containsKey(Object key)
Object	get(Object key)
Object	put(String key, Object value)
void	putAll(Map<? extends String,?> m)
Object	remove(Object key)

Methods inherited from class java.util.LinkedHashMap

clear, containsValue, entrySet, forEach, getOrDefault, keySet, removeEldestEntry, replaceAll, values

Methods inherited from class java.util.HashMap

clone, compute, computeIfAbsent, computeIfPresent, isEmpty, merge, putIfAbsent, remove, replace, replace, size

Methods inherited from class java.util.AbstractMap

equals, hashCode, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, equals, hashCode, isEmpty, merge, putIfAbsent, remove, replace, replace, size

Constructor Details

CaseInsensitiveHashMap

public CaseInsensitiveHashMap()

Method Details

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map<String,Object>

Overrides:

containsKey in class HashMap<String,Object>

get

public Object get(Object key)

Specified by:

get in interface Map<String,Object>

Overrides:

get in class LinkedHashMap<String,Object>

put

public Object put(String key,
 Object value)

Specified by:

put in interface Map<String,Object>

Overrides:

put in class HashMap<String,Object>

putAll

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

Specified by:

putAll in interface Map<String,Object>

Overrides:

putAll in class HashMap<String,Object>

remove

public Object remove(Object key)

Specified by:

remove in interface Map<String,Object>

Overrides:

remove in class HashMap<String,Object>