java.lang.Object
- com.fasterxml.jackson.jr.ob.impl.ValueWriterLocator

```
public class ValueWriterLocator
extends java.lang.Object
```
Helper object used for efficient detection of type information relevant to our conversion needs when writing out Java Objects as JSON.
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.JSONWriter, int): reason for this is that instances use simple caching to handle the common case of repeating types within JSON Arrays.

Field Summary

Fields
Modifier and Type	Field	Description
`protected int`	`_features`
`protected java.util.concurrent.ConcurrentHashMap<ClassKey,java.lang.Integer>`	`_knownSerTypes`	Mapping from classes to resolved type constants or indexes, to use for serialization.
`protected java.util.concurrent.CopyOnWriteArrayList<ValueWriter>`	`_knownWriters`
`protected JSONWriter`	`_writeContext`
`protected ReaderWriterProvider`	`_writerProvider`	Provider for custom writers, if any; may be null.
`protected static int`	`CACHE_FLAGS`
`protected BeanPropertyWriter[]`	`NO_PROPS_FOR_WRITE`
`static int`	`SER_BOOLEAN`
`static int`	`SER_BOOLEAN_ARRAY`
`static int`	`SER_BYTE_ARRAY`
`static int`	`SER_CALENDAR`
`static int`	`SER_CHAR`
`static int`	`SER_CHAR_ARRAY`
`static int`	`SER_CHARACTER_SEQUENCE`
`static int`	`SER_CLASS`
`static int`	`SER_COLLECTION`	All kinds of `Collection`s other than `List`s
`static int`	`SER_DATE`
`static int`	`SER_ENUM`
`static int`	`SER_FILE`
`static int`	`SER_INT_ARRAY`
`static int`	`SER_ITERABLE`	Anything that implements `Iterable`, but not `Collection`.
`static int`	`SER_LIST`	All kinds of `List`s.
`static int`	`SER_LONG_ARRAY`
`static int`	`SER_MAP`	All kinds of `Map`s.
`static int`	`SER_NUMBER_BIG_DECIMAL`
`static int`	`SER_NUMBER_BIG_INTEGER`
`static int`	`SER_NUMBER_BYTE`
`static int`	`SER_NUMBER_DOUBLE`
`static int`	`SER_NUMBER_FLOAT`
`static int`	`SER_NUMBER_INTEGER`
`static int`	`SER_NUMBER_LONG`
`static int`	`SER_NUMBER_SHORT`
`static int`	`SER_OBJECT_ARRAY`	Arrays of non-primitive types
`static int`	`SER_STRING`
`static int`	`SER_TREE_NODE`	An implementation of `TreeNode`
`static int`	`SER_UNKNOWN`	Type not yet resolved
`static int`	`SER_URI`
`static int`	`SER_URL`
`static int`	`SER_UUID`

Constructor Summary

Constructors
Modifier	Constructor	Description
`protected`	`ValueWriterLocator(int features, ReaderWriterProvider rwp)`	Constructor for the blueprint instance
`protected`	`ValueWriterLocator(ValueWriterLocator base, int features, JSONWriter w)`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected int`	`_findPOJOSerializationType(java.lang.Class<?> raw)`
`protected int`	`_findSimpleType(java.lang.Class<?> raw, boolean forSer)`
`protected POJODefinition`	`_resolveBeanDef(java.lang.Class<?> raw)`
`static ValueWriterLocator`	`blueprint(int features, ReaderWriterProvider rwp)`
`int`	`findSerializationType(java.lang.Class<?> raw)`	The main lookup method used to find type identifier for given raw class; including Bean types (if allowed).
`ValueWriter`	`getValueWriter(int index)`
`ValueWriterLocator`	`perOperationInstance(JSONWriter w, int features)`
`protected BeanPropertyWriter[]`	`resolveBeanForSer(java.lang.Class<?> raw, POJODefinition classDef)`
`ValueWriterLocator`	`with(ReaderWriterProvider rwp)`

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

Field Detail
- NO_PROPS_FOR_WRITE
```
protected final BeanPropertyWriter[] NO_PROPS_FOR_WRITE
```
- _knownSerTypes
```
protected final java.util.concurrent.ConcurrentHashMap<ClassKey,java.lang.Integer> _knownSerTypes
```
  Mapping from classes to resolved type constants or indexes, to use for serialization.
- _knownWriters
```
protected final java.util.concurrent.CopyOnWriteArrayList<ValueWriter> _knownWriters
```
- _writerProvider
```
protected final ReaderWriterProvider _writerProvider
```
  Provider for custom writers, if any; may be null.
  
  Since:
  
  2.10
- _features
```
protected final int _features
```
- _writeContext
```
protected final JSONWriter _writeContext
```
- SER_UNKNOWN
```
public static final int SER_UNKNOWN
```
  Type not yet resolved
  
  See Also:
  
  Constant Field Values
- SER_MAP
```
public static final int SER_MAP
```
  All kinds of Maps.
  
  See Also:
  
  Constant Field Values
- SER_LIST
```
public static final int SER_LIST
```
  All kinds of Lists.
  
  See Also:
  
  Constant Field Values
- SER_COLLECTION
```
public static final int SER_COLLECTION
```
  All kinds of Collections other than Lists
  
  See Also:
  
  Constant Field Values
- SER_OBJECT_ARRAY
```
public static final int SER_OBJECT_ARRAY
```
  Arrays of non-primitive types
  
  See Also:
  
  Constant Field Values
- SER_INT_ARRAY
```
public static final int SER_INT_ARRAY
```
  See Also:
  
  Constant Field Values
- SER_LONG_ARRAY
```
public static final int SER_LONG_ARRAY
```
  See Also:
  
  Constant Field Values
- SER_BOOLEAN_ARRAY
```
public static final int SER_BOOLEAN_ARRAY
```
  See Also:
  
  Constant Field Values
- SER_TREE_NODE
```
public static final int SER_TREE_NODE
```
  An implementation of TreeNode
  
  See Also:
  
  Constant Field Values
- SER_STRING
```
public static final int SER_STRING
```
  See Also:
  
  Constant Field Values
- SER_CHARACTER_SEQUENCE
```
public static final int SER_CHARACTER_SEQUENCE
```
  See Also:
  
  Constant Field Values
- SER_CHAR_ARRAY
```
public static final int SER_CHAR_ARRAY
```
  See Also:
  
  Constant Field Values
- SER_BYTE_ARRAY
```
public static final int SER_BYTE_ARRAY
```
  See Also:
  
  Constant Field Values
- SER_NUMBER_BYTE
```
public static final int SER_NUMBER_BYTE
```
  See Also:
  
  Constant Field Values
- SER_NUMBER_SHORT
```
public static final int SER_NUMBER_SHORT
```
  See Also:
  
  Constant Field Values
- SER_NUMBER_INTEGER
```
public static final int SER_NUMBER_INTEGER
```
  See Also:
  
  Constant Field Values
- SER_NUMBER_LONG
```
public static final int SER_NUMBER_LONG
```
  See Also:
  
  Constant Field Values
- SER_NUMBER_FLOAT
```
public static final int SER_NUMBER_FLOAT
```
  See Also:
  
  Constant Field Values
- SER_NUMBER_DOUBLE
```
public static final int SER_NUMBER_DOUBLE
```
  See Also:
  
  Constant Field Values
- SER_NUMBER_BIG_INTEGER
```
public static final int SER_NUMBER_BIG_INTEGER
```
  See Also:
  
  Constant Field Values
- SER_NUMBER_BIG_DECIMAL
```
public static final int SER_NUMBER_BIG_DECIMAL
```
  See Also:
  
  Constant Field Values
- SER_BOOLEAN
```
public static final int SER_BOOLEAN
```
  See Also:
  
  Constant Field Values
- SER_CHAR
```
public static final int SER_CHAR
```
  See Also:
  
  Constant Field Values
- SER_ENUM
```
public static final int SER_ENUM
```
  See Also:
  
  Constant Field Values
- SER_DATE
```
public static final int SER_DATE
```
  See Also:
  
  Constant Field Values
- SER_CALENDAR
```
public static final int SER_CALENDAR
```
  See Also:
  
  Constant Field Values
- SER_CLASS
```
public static final int SER_CLASS
```
  See Also:
  
  Constant Field Values
- SER_FILE
```
public static final int SER_FILE
```
  See Also:
  
  Constant Field Values
- SER_UUID
```
public static final int SER_UUID
```
  See Also:
  
  Constant Field Values
- SER_URL
```
public static final int SER_URL
```
  See Also:
  
  Constant Field Values
- SER_URI
```
public static final int SER_URI
```
  See Also:
  
  Constant Field Values
- SER_ITERABLE
```
public static final int SER_ITERABLE
```
  Anything that implements Iterable, but not Collection.
  
  See Also:
  
  Constant Field Values
- CACHE_FLAGS
```
protected static final int CACHE_FLAGS
```

Constructor Detail

ValueWriterLocator

protected ValueWriterLocator(int features,
                             ReaderWriterProvider rwp)

Constructor for the blueprint instance

ValueWriterLocator

protected ValueWriterLocator(ValueWriterLocator base,
                             int features,
                             JSONWriter w)

Method Detail

blueprint

public static final ValueWriterLocator blueprint(int features,
                                                 ReaderWriterProvider rwp)

with

public ValueWriterLocator with(ReaderWriterProvider rwp)

perOperationInstance

public ValueWriterLocator perOperationInstance(JSONWriter w,
                                               int features)

getValueWriter

public ValueWriter getValueWriter(int index)

findSerializationType
```
public final int findSerializationType(java.lang.Class<?> raw)
```
The main lookup method used to find type identifier for given raw class; including Bean types (if allowed).

_findPOJOSerializationType

protected int _findPOJOSerializationType(java.lang.Class<?> raw)

resolveBeanForSer

protected BeanPropertyWriter[] resolveBeanForSer(java.lang.Class<?> raw,
                                                 POJODefinition classDef)

_resolveBeanDef

protected POJODefinition _resolveBeanDef(java.lang.Class<?> raw)

_findSimpleType

protected int _findSimpleType(java.lang.Class<?> raw,
                              boolean forSer)

Class ValueWriterLocator

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

NO_PROPS_FOR_WRITE

_knownSerTypes

_knownWriters

_writerProvider

_features

_writeContext

SER_UNKNOWN

SER_MAP

SER_LIST

SER_COLLECTION

SER_OBJECT_ARRAY

SER_INT_ARRAY

SER_LONG_ARRAY

SER_BOOLEAN_ARRAY

SER_TREE_NODE

SER_STRING

SER_CHARACTER_SEQUENCE

SER_CHAR_ARRAY

SER_BYTE_ARRAY

SER_NUMBER_BYTE

SER_NUMBER_SHORT

SER_NUMBER_INTEGER

SER_NUMBER_LONG

SER_NUMBER_FLOAT

SER_NUMBER_DOUBLE

SER_NUMBER_BIG_INTEGER

SER_NUMBER_BIG_DECIMAL

SER_BOOLEAN

SER_CHAR

SER_ENUM

SER_DATE

SER_CALENDAR

SER_CLASS

SER_FILE

SER_UUID

SER_URL

SER_URI

SER_ITERABLE

CACHE_FLAGS

Constructor Detail

ValueWriterLocator

ValueWriterLocator

Method Detail

blueprint

with

perOperationInstance

getValueWriter

findSerializationType

_findPOJOSerializationType

resolveBeanForSer

_resolveBeanDef

_findSimpleType