org.apache.jdo.impl.model.java

Class BaseReflectionJavaType

java.lang.Object

org.apache.jdo.impl.model.java.AbstractJavaType

org.apache.jdo.impl.model.java.BaseReflectionJavaType

All Implemented Interfaces:

JavaType

Direct Known Subclasses:

PredefinedType, ReflectionJavaType

public class BaseReflectionJavaType
extends AbstractJavaType

This class provides a basic JavaType implementation using a reflection Class instance.

Note, BaseReflectionJavaType must not be used for array types, since it inherits the default implemention of methods isArray and getArrayComponentType from its superclass AbstractJavaType.

Since:

JDO 1.1

Author:

Michael Bouschen

Field Summary

Fields

Modifier and Type	Field and Description
protected java.lang.Class	clazz The java.lang.Class instance for this BaseReflectionJavaType.
protected JavaType	superclass The superclass JavaType.

Constructor Summary

Constructors

Constructor and Description
BaseReflectionJavaType(java.lang.Class clazz, JavaType superclass) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.Class	getJavaClass() Returns the java.lang.Class instance wrapped by this JavaType.
JavaField	getJavaField(java.lang.String fieldName) Returns a JavaField instance that reflects the field with the specified name of the class or interface represented by this JavaType instance.
int	getModifiers() Returns the Java language modifiers for the field represented by this JavaType, as an integer.
java.lang.String	getName() Returns the name of the type.
JavaType	getSuperclass() Returns the JavaType representing the superclass of the entity represented by this JavaType.
boolean	isCompatibleWith(JavaType javaType) Returns true if this JavaType is compatible with the specified JavaType.
boolean	isInterface() Determines if this JavaType object represents an interface type.

Methods inherited from class org.apache.jdo.impl.model.java.AbstractJavaType

equals, getArrayComponentType, getJDOClass, hashCode, isArray, isFloatingPoint, isIntegral, isJDOSupportedCollection, isJDOSupportedMap, isOrderable, isPersistenceCapable, isPrimitive, isTrackable, isValue, isWrapperClass, toString

Methods inherited from class java.lang.Object

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

Field Detail

clazz

protected java.lang.Class clazz

The java.lang.Class instance for this BaseReflectionJavaType.

superclass

protected JavaType superclass

The superclass JavaType.

Constructor Detail

BaseReflectionJavaType

public BaseReflectionJavaType(java.lang.Class clazz,
                      JavaType superclass)

Constructor. The specified java.lang.Class instance must not be null. The

Parameters:

clazz - the Class instance representing the type

superclass - JavaType instance representing the superclass.

Method Detail

isInterface

public boolean isInterface()

Determines if this JavaType object represents an interface type.

Specified by:

isInterface in interface JavaType

Overrides:

isInterface in class AbstractJavaType

Returns:

true if this object represents an interface type; false otherwise.

isCompatibleWith

public boolean isCompatibleWith(JavaType javaType)

Returns true if this JavaType is compatible with the specified JavaType.

Specified by:

isCompatibleWith in interface JavaType

Overrides:

isCompatibleWith in class AbstractJavaType

Parameters:

javaType - the type this JavaType is checked with.

Returns:

true if this is compatible with the specified type; false otherwise.

getName

public java.lang.String getName()

Returns the name of the type. If this type represents a class or interface, the name is fully qualified.

Specified by:

getName in interface JavaType

Specified by:

getName in class AbstractJavaType

Returns:

type name

getModifiers

public int getModifiers()

Returns the Java language modifiers for the field represented by this JavaType, as an integer. The java.lang.reflect.Modifier class should be used to decode the modifiers.

Specified by:

getModifiers in interface JavaType

Overrides:

getModifiers in class AbstractJavaType

Returns:

the Java language modifiers for this JavaType

getSuperclass

public JavaType getSuperclass()

Returns the JavaType representing the superclass of the entity represented by this JavaType. If this JavaType represents either the Object class, an interface, a primitive type, or void, then null is returned. If this object represents an array class then the JavaType instance representing the Object class is returned.

Specified by:

getSuperclass in interface JavaType

Overrides:

getSuperclass in class AbstractJavaType

Returns:

the superclass of the class represented by this JavaType.

getJavaField

public JavaField getJavaField(java.lang.String fieldName)

Returns a JavaField instance that reflects the field with the specified name of the class or interface represented by this JavaType instance. The method returns null, if the class or interface (or one of its superclasses) does not have a field with that name.

Specified by:

getJavaField in interface JavaType

Overrides:

getJavaField in class AbstractJavaType

Parameters:

fieldName - the name of the field

Returns:

the JavaField instance for the specified field in this class or null if there is no such field.

getJavaClass

public java.lang.Class getJavaClass()

Returns the java.lang.Class instance wrapped by this JavaType.

Returns:

the Class instance for this JavaType.