Package liquibase.util

Class SmartMap

java.lang.Object

liquibase.util.SmartMap

All Implemented Interfaces:

Map<String,Object>

public class SmartMap
extends Object
implements Map<String,Object>

Implementation of Map with the added methods get(String, Class) and get(String, Object) to make the return values type safe and/or auto-converted. Also adds set(String, Object) for easier builder-style code. Returns keys in alphabetical order.

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
SmartMap()

Method Summary

Modifier and Type	Method	Description
void	clear()
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Set<Map.Entry<String,Object>>	entrySet()
boolean	equals(Object o)
Object	get(Object key)
<T> T	get(String key, Class<T> type)	Return the value for the given key converted to the passed type.
<T> T	get(String key, T defaultValue)	Return the value for the given key converted to the type of the default value.
int	hashCode()
boolean	isEmpty()
Set<String>	keySet()
Object	put(String key, Object value)	Like normal Map.put(Object, Object) operation, but if null is passed as "value" it removes the key/value from the map.
void	putAll(Map<? extends String,?> m)
Object	remove(Object key)
SmartMap	set(String key, Object value)	Works like put(String, Object) but returns this SmartMap rather than the old value.
int	size()
Collection<Object>	values()

Methods inherited from class java.lang.Object

clone, finalize, 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

SmartMap

public SmartMap()

Method Details

size

public int size()

Specified by:

size in interface Map<String,Object>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<String,Object>

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map<String,Object>

containsValue

public boolean containsValue(Object value)

Specified by:

containsValue in interface Map<String,Object>

get

public Object get(Object key)

Specified by:

get in interface Map<String,Object>

get

public <T> T get(String key,
 Class<T> type)

Return the value for the given key converted to the passed type. If the value associated with the key is null, null is returned. If the stored value is different than the passed type, a conversion is attempted using ObjectUtil.convert(Object, Class). Any conversion is done only on the return value. The stored value is unchanged.

get

public <T> T get(String key,
 T defaultValue)

Return the value for the given key converted to the type of the default value. If the value is null, defaultValue is returned. Conversion is done using get(String, Class)

put

public Object put(String key,
 Object value)

Like normal Map.put(Object, Object) operation, but if null is passed as "value" it removes the key/value from the map.

Specified by:

put in interface Map<String,Object>

set

public SmartMap set(String key,
 Object value)

Works like put(String, Object) but returns this SmartMap rather than the old value.

remove

public Object remove(Object key)

Specified by:

remove in interface Map<String,Object>

putAll

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

Specified by:

putAll in interface Map<String,Object>

clear

public void clear()

Specified by:

clear in interface Map<String,Object>

equals

public boolean equals(Object o)

Specified by:

equals in interface Map<String,Object>

Overrides:

equals in class Object

hashCode

public int hashCode()

Specified by:

hashCode in interface Map<String,Object>

Overrides:

hashCode in class Object

keySet

public Set<String> keySet()

Specified by:

keySet in interface Map<String,Object>

values

public Collection<Object> values()

Specified by:

values in interface Map<String,Object>

entrySet

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

Specified by:

entrySet in interface Map<String,Object>