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java.lang.Objectorg.apache.jdo.impl.model.java.AbstractJavaType
org.apache.jdo.impl.model.java.NullType
public class NullType
An instance of class NullType represents the type of the null expression in Java. It is compatible to all reference types.
Field Summary | |
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static NullType |
nullType
The singleton NullType instance. |
Constructor Summary | |
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protected |
NullType()
Creates new a NullType instance. |
Method Summary | |
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java.lang.String |
getName()
Returns the name of the type. |
boolean |
isCompatibleWith(JavaType javaType)
Returns true if this JavaType is compatible with the specified JavaType. |
Methods inherited from class org.apache.jdo.impl.model.java.AbstractJavaType |
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equals, getArrayComponentType, getDeclaredJavaFields, getDeclaredJavaProperties, getJavaField, getJavaProperty, getJDOClass, getModifiers, getSuperclass, getUnderlyingObject, hashCode, isArray, isFloatingPoint, isIntegral, isInterface, isJDOSupportedCollection, isJDOSupportedMap, isOrderable, isPersistenceCapable, isPrimitive, isTrackable, isValue, isWrapperClass, toString |
Methods inherited from class java.lang.Object |
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clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
Field Detail |
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public static final NullType nullType
Constructor Detail |
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protected NullType()
nullType
should be used.
Method Detail |
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public boolean isCompatibleWith(JavaType javaType)
true
, if the
specified javaType is a not a primitive type, because the type of
null is compatiple with all reference types.
isCompatibleWith
in interface JavaType
isCompatibleWith
in class AbstractJavaType
javaType
- the type this JavaType is checked with.
true
if this is compatible with the specified
type; false
otherwise.public java.lang.String getName()
getName
in interface JavaType
getName
in class AbstractJavaType
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