Class ClassKey
- java.lang.Object
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- com.fasterxml.jackson.databind.type.ClassKey
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- All Implemented Interfaces:
java.io.Serializable
,java.lang.Comparable<ClassKey>
public final class ClassKey extends java.lang.Object implements java.lang.Comparable<ClassKey>, java.io.Serializable
Key class, used as an efficient and accurate key for locating per-class values, such asJsonSerializer
s.The reason for having a separate key class instead of directly using
Class
as key is mostly to allow for redefininghashCode
method -- for some strange reason,Class
does not redefineObject.hashCode()
and thus uses identity hash, which is pretty slow. This makes key access usingClass
unnecessarily slow.Note: since class is not strictly immutable, caller must know what it is doing, if changing field values.
- See Also:
- Serialized Form
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description int
compareTo(ClassKey other)
boolean
equals(java.lang.Object o)
int
hashCode()
void
reset(java.lang.Class<?> clz)
java.lang.String
toString()
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Method Detail
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reset
public void reset(java.lang.Class<?> clz)
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compareTo
public int compareTo(ClassKey other)
- Specified by:
compareTo
in interfacejava.lang.Comparable<ClassKey>
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equals
public boolean equals(java.lang.Object o)
- Overrides:
equals
in classjava.lang.Object
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hashCode
public int hashCode()
- Overrides:
hashCode
in classjava.lang.Object
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toString
public java.lang.String toString()
- Overrides:
toString
in classjava.lang.Object
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