Jackson 2.18.2 · com.fasterxml.jackson.databind.util.CompactStringObjectMap

Specialized lookup class that implements functionality similar to java.util.Map, but for special case of key always being java.lang.String and using more compact (and memory-access friendly) hashing scheme. Assumption is also that keys are typically intern()ed.

Generics are not used to avoid bridge methods and since these maps are not exposed as part of external API.

Field Summary

Modifier and Type	Field and Description
private final Object[]	_hashArea
private final int	_hashMask
private final int	_spillCount
private static final CompactStringObjectMap	EMPTY Shared instance that can be used when there are no contents to Map.
private static final long	serialVersionUID

Constructor Summary

Access	Constructor and Description
private	CompactStringObjectMap(int hashMask, int spillCount, Object[] hashArea)

Method Summary

Modifier and Type	Method and Description
private final Object	_find2(String key, int slot, Object match)
public static <T> CompactStringObjectMap	construct(Map<String, T> all)
public Object	find(String key)
public Object	findCaseInsensitive(String key)
private static final int	findSize(int size)
public List<String>	keys()

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

_hashArea	back to summary
private final Object[] _hashArea

_hashMask	back to summary
private final int _hashMask

_spillCount	back to summary
private final int _spillCount

EMPTY	back to summary
private static final CompactStringObjectMap EMPTY Shared instance that can be used when there are no contents to Map.

serialVersionUID	back to summary
private static final long serialVersionUID

Constructor Detail

CompactStringObjectMap	back to summary
private CompactStringObjectMap(int hashMask, int spillCount, Object[] hashArea)

Method Detail

_find2	back to summary
private final Object _find2(String key, int slot, Object match)

construct	back to summary
public static <T> CompactStringObjectMap construct(Map<String, T> all)

find	back to summary
public Object find(String key)

findCaseInsensitive	back to summary
public Object findCaseInsensitive(String key)

findSize	back to summary
private static final int findSize(int size)