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java.lang.Object com.fasterxml.jackson.databind.ser.SerializerCache
public final class SerializerCache
Simple cache object that allows for doing 2-level lookups: first level is by "local" read-only lookup Map (used without locking) and second backup level is by a shared modifiable HashMap. The idea is that after a while, most serializers are found from the local Map (to optimize performance, reduce lock contention), but that during buildup we can use a shared map to reduce both number of distinct read-only maps constructed, and number of serializers constructed.
Since version 1.5 cache will actually contain three kinds of entries, based on combination of class pair key. First class in key is for the type to serialize, and second one is type used for determining how to resolve value type. One (but not both) of entries can be null.
Nested Class Summary | |
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static class |
SerializerCache.TypeKey
Key that offers two "modes"; one with raw class, as used for cases were raw class type is available (for example, when using runtime type); and one with full generics-including. |
Constructor Summary | |
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SerializerCache()
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Method Summary | |
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void |
addAndResolveNonTypedSerializer(Class<?> type,
JsonSerializer<Object> ser,
SerializerProvider provider)
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void |
addAndResolveNonTypedSerializer(JavaType type,
JsonSerializer<Object> ser,
SerializerProvider provider)
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void |
addTypedSerializer(Class<?> cls,
JsonSerializer<Object> ser)
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void |
addTypedSerializer(JavaType type,
JsonSerializer<Object> ser)
Method called if none of lookups succeeded, and caller had to construct a serializer. |
void |
flush()
Method called by StdSerializerProvider#flushCachedSerializers() to clear all cached serializers |
ReadOnlyClassToSerializerMap |
getReadOnlyLookupMap()
Method that can be called to get a read-only instance populated from the most recent version of the shared lookup Map. |
int |
size()
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JsonSerializer<Object> |
typedValueSerializer(Class<?> cls)
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JsonSerializer<Object> |
typedValueSerializer(JavaType type)
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JsonSerializer<Object> |
untypedValueSerializer(Class<?> type)
Method that checks if the shared (and hence, synchronized) lookup Map might have untyped serializer for given type. |
JsonSerializer<Object> |
untypedValueSerializer(JavaType type)
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Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public SerializerCache()
Method Detail |
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public ReadOnlyClassToSerializerMap getReadOnlyLookupMap()
public int size()
public JsonSerializer<Object> untypedValueSerializer(Class<?> type)
public JsonSerializer<Object> untypedValueSerializer(JavaType type)
public JsonSerializer<Object> typedValueSerializer(JavaType type)
public JsonSerializer<Object> typedValueSerializer(Class<?> cls)
public void addTypedSerializer(JavaType type, JsonSerializer<Object> ser)
public void addTypedSerializer(Class<?> cls, JsonSerializer<Object> ser)
public void addAndResolveNonTypedSerializer(Class<?> type, JsonSerializer<Object> ser, SerializerProvider provider) throws JsonMappingException
JsonMappingException
public void addAndResolveNonTypedSerializer(JavaType type, JsonSerializer<Object> ser, SerializerProvider provider) throws JsonMappingException
JsonMappingException
public void flush()
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