com.fasterxml.jackson.jr.ob.impl

Class EnumReader

java.lang.Object

com.fasterxml.jackson.jr.ob.api.ValueReader

com.fasterxml.jackson.jr.ob.impl.EnumReader

public class EnumReader
extends ValueReader

Reader for Enum values: needed because we need a simple Map for efficient conversion from id (gotten with Enum.toString() to value.

In future we could consider alternatively allowing use of Enum.name() for id.

Field Summary

Fields

Modifier and Type	Field and Description
protected Object[]	_byIndex
protected Map<String,Object>	_byName

Fields inherited from class com.fasterxml.jackson.jr.ob.api.ValueReader

_valueType

Constructor Summary

Constructors

Constructor and Description
EnumReader(Class<?> enumType, Object[] byIndex, Map<String,Object> byName)

Method Summary

Modifier and Type	Method and Description
Object	read(JSONReader reader, JsonParser p) Method called to deserialize value of type supported by this reader, using given parser.
Object	readNext(JSONReader reader, JsonParser p) Method called to deserialize value of type supported by this reader, using given parser.

Methods inherited from class com.fasterxml.jackson.jr.ob.api.ValueReader

_tokenDesc, _tokenDesc, valueType

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

_byIndex

protected final Object[] _byIndex

_byName

protected final Map<String,Object> _byName

Constructor Detail

EnumReader

public EnumReader(Class<?> enumType,
                  Object[] byIndex,
                  Map<String,Object> byName)

Method Detail

readNext

public Object readNext(JSONReader reader,
                       JsonParser p)
                throws IOException

Description copied from class: ValueReader

Method called to deserialize value of type supported by this reader, using given parser. Parser is not yet positioned to the (first) token of the value to read and needs to be advanced.

Default implementation simply calls `p.nextToken()` first, then calls {#link ValueReader.read(JSONReader, JsonParser), but some implementations may decide to implement this differently to use (slightly) more efficient accessor in JsonParser, like JsonParser.nextIntValue(int).

Overrides:

readNext in class ValueReader

Parameters:

reader - Context object that allows calling other read methods for contained values of different types (for example for collection readers).

p - Underlying parser used for reading decoded token stream

Throws:

IOException

read

public Object read(JSONReader reader,
                   JsonParser p)
            throws IOException

Description copied from class: ValueReader

Method called to deserialize value of type supported by this reader, using given parser. Parser is already positioned to the (first) token of the value to read.

Specified by:

read in class ValueReader

Parameters:

reader - Context object that allows calling other read methods for contained values of different types (for example for collection readers).

p - Underlying parser used for reading decoded token stream

Throws:

IOException