org.codehaus.jackson.type
Class JavaType

java.lang.Object
  org.codehaus.jackson.type.JavaType

Direct Known Subclasses:

ArrayType, CollectionType, MapType, SimpleType

public abstract class JavaType
extends java.lang.Object

Base class for type token classes used both to contain information and as keys for deserializers.

Instances can (only) be constructed by TypeFactory.

Field Summary

protected java.lang.Class<?>	_class This is the nominal type-erased Class that would be close to the type represented (but not exactly type, due to type erasure: type instance may have more information on this).
protected int	_hashCode

Constructor Summary

protected

JavaType(java.lang.Class<?> clz)

Method Summary

protected void	_assertSubclass(java.lang.Class<?> subclass, java.lang.Class<?> superClass)
protected abstract JavaType	_narrow(java.lang.Class<?> subclass)
abstract boolean	equals(java.lang.Object o)
java.lang.Class<?>	getRawClass()
int	hashCode()
boolean	hasRawClass(java.lang.Class<?> clz) Method that can be used to check whether this type has specified Class as its type erasure.
boolean	isAbstract()
boolean	isArrayType()
abstract boolean	isContainerType()
boolean	isEnumType()
abstract boolean	isFullyTyped() Method that can be used to check whether type described is fully typed, regarding the way JavaTypes are used for deserialization.
boolean	isInterface()
boolean	isPrimitive()
JavaType	narrowBy(java.lang.Class<?> subclass) Method that can be called to do a "narrowing" conversions; that is, to return a type with a raw class that is assignable to the raw class of this type.
abstract JavaType	narrowContentsBy(java.lang.Class<?> contentClass)
abstract java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

_class

protected final java.lang.Class<?> _class

This is the nominal type-erased Class that would be close to the type represented (but not exactly type, due to type erasure: type instance may have more information on this). May be an interface or abstract class, so instantiation may not be possible.

_hashCode

protected int _hashCode

Constructor Detail

JavaType

protected JavaType(java.lang.Class<?> clz)

Method Detail

narrowBy

public final JavaType narrowBy(java.lang.Class<?> subclass)

Method that can be called to do a "narrowing" conversions; that is, to return a type with a raw class that is assignable to the raw class of this type. If this is not possible, an IllegalArgumentException is thrown. If class is same as the current raw class, instance itself is returned.

_narrow

protected abstract JavaType _narrow(java.lang.Class<?> subclass)

narrowContentsBy

public abstract JavaType narrowContentsBy(java.lang.Class<?> contentClass)

getRawClass

public final java.lang.Class<?> getRawClass()

hasRawClass

public final boolean hasRawClass(java.lang.Class<?> clz)

Method that can be used to check whether this type has specified Class as its type erasure. Put another way, returns true if instantiation of this Type is given (type-erased) Class.

isFullyTyped

public abstract boolean isFullyTyped()

Method that can be used to check whether type described is fully typed, regarding the way JavaTypes are used for deserialization. For this to be true, all Collection and Map types must have proper element/value/key type information, and can not be plain classes.

isContainerType

public abstract boolean isContainerType()

Returns:

True if type represented is a container type; this includes array, Map and Collection types.

isAbstract

public final boolean isAbstract()

isArrayType

public final boolean isArrayType()

isEnumType

public final boolean isEnumType()

isInterface

public final boolean isInterface()

isPrimitive

public final boolean isPrimitive()

_assertSubclass

protected void _assertSubclass(java.lang.Class<?> subclass,
                               java.lang.Class<?> superClass)

toString

public abstract java.lang.String toString()

Overrides:

toString in class java.lang.Object

equals

public abstract boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public final int hashCode()

Overrides:

hashCode in class java.lang.Object