public class ValueReaderLocator extends ValueLocatorBase
Note that usage pattern is such that a single "root" instance is kept
by each JSON
instance; and
an actual per-operation instance must be constructed by calling
perOperationInstance(com.fasterxml.jackson.jr.ob.impl.JSONReader, int)
: reason for this is that instances
use simple caching to handle the common case of repeating types
within JSON Arrays.
Modifier and Type | Field and Description |
---|---|
protected int |
_features
Feature flags that are enabled
|
protected Map<ClassKey,ValueReader> |
_incompleteReaders
During resolution, some readers may be in-progress, but need to be
linked: for example, with cyclic type references.
|
protected ConcurrentHashMap<ClassKey,ValueReader> |
_knownReaders
Set of
ValueReader s that we have resolved |
protected JSONReader |
_readContext |
protected Object |
_readerLock
Object used for mutex during construction of a Bean deserializer: necessary
to avoid race conditions during handling of cyclic dependencies.
|
protected ReaderWriterModifier |
_readerModifier
Provider for reader customizer, if any; may be null.
|
protected ReaderWriterProvider |
_readerProvider
Provider for custom readers, if any; may be null.
|
protected TypeResolver |
_typeResolver
For generic containers (Collections, Maps, arrays), we may need
this guy.
|
protected static int |
MAX_CACHED_READERS
While we should be able to cache all types in the active working set,
we should also avoid potential unbounded retention, since there is
often just one big instance per JVM (or at least ClassLoader).
|
CACHE_FLAGS, SER_BOOLEAN, SER_BOOLEAN_ARRAY, SER_BYTE_ARRAY, SER_CALENDAR, SER_CHAR, SER_CHAR_ARRAY, SER_CHARACTER_SEQUENCE, SER_CLASS, SER_COLLECTION, SER_DATE, SER_ENUM, SER_FILE, SER_INT_ARRAY, SER_ITERABLE, SER_LIST, SER_LONG_ARRAY, SER_MAP, SER_NUMBER_BIG_DECIMAL, SER_NUMBER_BIG_INTEGER, SER_NUMBER_BYTE, SER_NUMBER_DOUBLE, SER_NUMBER_FLOAT, SER_NUMBER_INTEGER, SER_NUMBER_LONG, SER_NUMBER_SHORT, SER_OBJECT_ARRAY, SER_STRING, SER_TREE_NODE, SER_UNKNOWN, SER_URI, SER_URL, SER_UUID
Modifier | Constructor and Description |
---|---|
protected |
ValueReaderLocator(ReaderWriterProvider rwp,
ReaderWriterModifier rwm)
Constructor for the blueprint instance
|
protected |
ValueReaderLocator(ValueReaderLocator base,
int features,
JSONReader r) |
protected |
ValueReaderLocator(ValueReaderLocator base,
ReaderWriterProvider rwp,
ReaderWriterModifier rwm) |
Modifier and Type | Method and Description |
---|---|
protected ValueReader |
_createReader(Class<?> contextType,
Class<?> type,
Type genericType) |
protected POJODefinition |
_resolveBeanDef(Class<?> raw) |
protected BeanReader |
_resolveBeanForDeser(Class<?> raw,
POJODefinition beanDef) |
protected ValueReader |
arrayReader(Class<?> contextType,
Class<?> arrayType) |
protected ValueReader |
beanReader(Class<?> type) |
static ValueReaderLocator |
blueprint(ReaderWriterProvider rwp,
ReaderWriterModifier rwm) |
protected ValueReader |
collectionReader(Class<?> collectionType,
ResolvedType valueType) |
protected ValueReader |
collectionReader(Class<?> contextType,
Type collectionType) |
protected ValueReader |
createReader(Class<?> contextType,
Class<?> type,
Type genericType)
Factory method for creating standard readers of any declared type.
|
protected ValueReader |
enumReader(Class<?> enumType) |
ValueReader |
findReader(Class<?> raw)
Method used during deserialization to find handler for given
non-generic type: will first check for already resolved (and cached) readers
-- and return if one found -- and then if no cached reader found, create
one, cache, return.
|
protected ValueReader |
mapReader(Class<?> mapType,
ResolvedType valueType) |
protected ValueReader |
mapReader(Class<?> contextType,
Type mapType) |
ValueReaderLocator |
perOperationInstance(JSONReader r,
int features) |
ReaderWriterModifier |
readerWriterModifier() |
ReaderWriterProvider |
readerWriterProvider() |
ValueReaderLocator |
with(ReaderWriterModifier rwm) |
ValueReaderLocator |
with(ReaderWriterProvider rwp) |
_findSimpleType
protected static final int MAX_CACHED_READERS
protected final TypeResolver _typeResolver
protected final ReaderWriterProvider _readerProvider
protected final ReaderWriterModifier _readerModifier
protected final ConcurrentHashMap<ClassKey,ValueReader> _knownReaders
ValueReader
s that we have resolvedprotected Map<ClassKey,ValueReader> _incompleteReaders
protected final Object _readerLock
protected final int _features
protected final JSONReader _readContext
protected ValueReaderLocator(ReaderWriterProvider rwp, ReaderWriterModifier rwm)
protected ValueReaderLocator(ValueReaderLocator base, int features, JSONReader r)
protected ValueReaderLocator(ValueReaderLocator base, ReaderWriterProvider rwp, ReaderWriterModifier rwm)
public static final ValueReaderLocator blueprint(ReaderWriterProvider rwp, ReaderWriterModifier rwm)
public ValueReaderLocator with(ReaderWriterProvider rwp)
public ValueReaderLocator with(ReaderWriterModifier rwm)
public ValueReaderLocator perOperationInstance(JSONReader r, int features)
public ReaderWriterProvider readerWriterProvider()
public ReaderWriterModifier readerWriterModifier()
public ValueReader findReader(Class<?> raw)
raw
- Type-erased type of value to find reader forprotected ValueReader createReader(Class<?> contextType, Class<?> type, Type genericType)
contextType
- Context for resolving generic type parameterstype
- Type-erased type of value to construct reader forgenericType
- Full (possibly) generic type of value to construct reader for (important
for Map
, Collection
).protected ValueReader _createReader(Class<?> contextType, Class<?> type, Type genericType)
protected ValueReader arrayReader(Class<?> contextType, Class<?> arrayType)
protected ValueReader enumReader(Class<?> enumType)
protected ValueReader collectionReader(Class<?> contextType, Type collectionType)
protected ValueReader collectionReader(Class<?> collectionType, ResolvedType valueType)
protected ValueReader mapReader(Class<?> contextType, Type mapType)
protected ValueReader mapReader(Class<?> mapType, ResolvedType valueType)
protected ValueReader beanReader(Class<?> type)
protected POJODefinition _resolveBeanDef(Class<?> raw)
protected BeanReader _resolveBeanForDeser(Class<?> raw, POJODefinition beanDef)
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