org.datanucleus.jpa.query

Class AnnotationProcessorUtils

java.lang.Object

org.datanucleus.jpa.query.AnnotationProcessorUtils

public class AnnotationProcessorUtils
extends Object

Series of method to aid in the writing of annotation processors.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	AnnotationProcessorUtils.TypeCategory

Constructor Summary

Constructors

Constructor and Description
AnnotationProcessorUtils()

Method Summary

Modifier and Type	Method and Description
static TypeMirror	getDeclaredType(Element elem) Accessor for the declared type of this element.
static String	getDeclaredTypeName(ProcessingEnvironment processingEnv, TypeMirror type, boolean box) Method to return the declared type name of the provided TypeMirror.
static List<? extends Element>	getFieldMembers(TypeElement el) Convenience accessor for all field members of the supplied type element.
static String	getMemberName(Element el) Accessor for the member name for a field or Java bean getter/setter.
static List<? extends Element>	getPropertyMembers(TypeElement el) Convenience accessor for all property members of the supplied type element.
static AnnotationProcessorUtils.TypeCategory	getTypeCategoryForTypeMirror(String typeName) Method to return the type category for a type.
static Object	getValueForAnnotationAttribute(Element elem, Class annotCls, String attribute) Accessor for the value for an annotation attribute.
static boolean	isJavaBeanGetter(ExecutableElement method) Convenience method to return if the provided method is a java bean getter.
static boolean	isJavaBeanSetter(ExecutableElement method) Convenience method to return if the provided method is a java bean setter.
static boolean	isMethod(Element elem) Convenience method to return if the provided element represents a method (otherwise a field).
static boolean	returnsBoolean(ExecutableElement method) Convenience method returning if the provided method returns boolean.
static boolean	returnsVoid(ExecutableElement method) Convenience method returning if the provided method returns void.
static boolean	typeIsPrimitive(TypeMirror type) Convenience method to return if the provided type is a primitive.

Methods inherited from class java.lang.Object

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

Constructor Detail

AnnotationProcessorUtils

public AnnotationProcessorUtils()

Method Detail

getTypeCategoryForTypeMirror

public static AnnotationProcessorUtils.TypeCategory getTypeCategoryForTypeMirror(String typeName)

Method to return the type category for a type.

Parameters:

typeName - The type name (e.g java.lang.String, java.util.Collection)

Returns:

The type category

getFieldMembers

public static List<? extends Element> getFieldMembers(TypeElement el)

Convenience accessor for all field members of the supplied type element.

Parameters:

el - The type element

Returns:

The field members

getPropertyMembers

public static List<? extends Element> getPropertyMembers(TypeElement el)

Convenience accessor for all property members of the supplied type element.

Parameters:

el - The type element

Returns:

The property members

isJavaBeanGetter

public static boolean isJavaBeanGetter(ExecutableElement method)

Convenience method to return if the provided method is a java bean getter.

Parameters:

method - The method

Returns:

Whether it is a java bean getter

getMemberName

public static String getMemberName(Element el)

Accessor for the member name for a field or Java bean getter/setter. If this is a field then just returns the field name, and if "getXxx"/"setXxx" then returns "xxx"

Parameters:

el - The element

Returns:

The member name

isJavaBeanSetter

public static boolean isJavaBeanSetter(ExecutableElement method)

Convenience method to return if the provided method is a java bean setter.

Parameters:

method - The method

Returns:

Whether it is a java bean setter

isMethod

public static boolean isMethod(Element elem)

Convenience method to return if the provided element represents a method (otherwise a field).

Parameters:

elem - The element

Returns:

Whether it represents a method

getDeclaredType

public static TypeMirror getDeclaredType(Element elem)

Accessor for the declared type of this element. If this is a field then returns the declared type of the field. If this is a java bean getter then returns the return type.

Parameters:

elem - The element

Returns:

The declared type

getValueForAnnotationAttribute

public static Object getValueForAnnotationAttribute(Element elem,
                                                    Class annotCls,
                                                    String attribute)

Accessor for the value for an annotation attribute.

Parameters:

elem - The element

annotCls - Annotation class

attribute - The attribute we're interested in

Returns:

The value

returnsVoid

public static boolean returnsVoid(ExecutableElement method)

Convenience method returning if the provided method returns void.

Parameters:

method - The method

Returns:

Whether it returns void

returnsBoolean

public static boolean returnsBoolean(ExecutableElement method)

Convenience method returning if the provided method returns boolean.

Parameters:

method - The method

Returns:

Whether it returns boolean

typeIsPrimitive

public static boolean typeIsPrimitive(TypeMirror type)

Convenience method to return if the provided type is a primitive.

Parameters:

type - The type

Returns:

Whether it is a primitive

getDeclaredTypeName

public static String getDeclaredTypeName(ProcessingEnvironment processingEnv,
                                         TypeMirror type,
                                         boolean box)

Method to return the declared type name of the provided TypeMirror.

Parameters:

processingEnv - Processing environment

type - The type (mirror)

box - Whether to (auto)box this type

Returns:

The type name (e.g "java.lang.String")