SerializerCache (jackson-databind 2.3.4)

java.lang.Object
- com.fasterxml.jackson.databind.ser.SerializerCache

```
public final class SerializerCache
extends Object
```
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

Nested Classes
Modifier and Type	Class and Description
`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

Constructors
Constructor and Description

SerializerCache()

Constructors
Constructor and Description
`SerializerCache()`

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`addAndResolveNonTypedSerializer(Class<?> type, JsonSerializer<Object> ser, SerializerProvider provider)`
`void`	`addAndResolveNonTypedSerializer(JavaType type, JsonSerializer<Object> ser, SerializerProvider provider)`
`void`	`addTypedSerializer(Class<?> cls, JsonSerializer<Object> ser)`
`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()`
`JsonSerializer<Object>`	`typedValueSerializer(Class<?> cls)`
`JsonSerializer<Object>`	`typedValueSerializer(JavaType type)`
`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)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail
- SerializerCache
```
public SerializerCache()
```

Method Detail

getReadOnlyLookupMap
```
public ReadOnlyClassToSerializerMap getReadOnlyLookupMap()
```
Method that can be called to get a read-only instance populated from the most recent version of the shared lookup Map.

size
```
public int size()
```

untypedValueSerializer
```
public JsonSerializer<Object> untypedValueSerializer(Class<?> type)
```
Method that checks if the shared (and hence, synchronized) lookup Map might have untyped serializer for given type.

untypedValueSerializer

public JsonSerializer<Object> untypedValueSerializer(JavaType type)

typedValueSerializer

public JsonSerializer<Object> typedValueSerializer(JavaType type)

typedValueSerializer

public JsonSerializer<Object> typedValueSerializer(Class<?> cls)

addTypedSerializer
```
public void addTypedSerializer(JavaType type,
                      JsonSerializer<Object> ser)
```
Method called if none of lookups succeeded, and caller had to construct a serializer. If so, we will update the shared lookup map so that it can be resolved via it next time.

addTypedSerializer

public void addTypedSerializer(Class<?> cls,
                      JsonSerializer<Object> ser)

addAndResolveNonTypedSerializer

public void addAndResolveNonTypedSerializer(Class<?> type,
                                   JsonSerializer<Object> ser,
                                   SerializerProvider provider)
                                     throws JsonMappingException

Throws:: JsonMappingException

addAndResolveNonTypedSerializer

public void addAndResolveNonTypedSerializer(JavaType type,
                                   JsonSerializer<Object> ser,
                                   SerializerProvider provider)
                                     throws JsonMappingException

Throws:: JsonMappingException

flush
```
public void flush()
```
Method called by StdSerializerProvider#flushCachedSerializers() to clear all cached serializers

Class SerializerCache

Nested Class Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

SerializerCache

Method Detail

getReadOnlyLookupMap

size

untypedValueSerializer

untypedValueSerializer

typedValueSerializer

typedValueSerializer

addTypedSerializer

addTypedSerializer

addAndResolveNonTypedSerializer

addAndResolveNonTypedSerializer

flush