Package name.matthewgreet.strutscommons.util

Class InterceptorCommonLibrary

java.lang.Object

name.matthewgreet.strutscommons.util.InterceptorCommonLibrary

public class InterceptorCommonLibrary
extends Object

Static functions used by validation Interceptors, form formating Interceptors and validators.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	InterceptorCommonLibrary.AnnotationEntries<T>	Summarises the list of recognised annotations of a form field.
static enum	InterceptorCommonLibrary.AnnotationUsage
static class	InterceptorCommonLibrary.CategoriseFieldResult
static class	InterceptorCommonLibrary.ConfiguredPolicy<T>	Describes a type of form field annotation and an instance of the policy it configures.
static class	InterceptorCommonLibrary.FieldUsage<T>
static enum	InterceptorCommonLibrary.FormFieldCategory
static class	InterceptorCommonLibrary.PairFieldUsage<T>
static class	InterceptorCommonLibrary.PolicyEntry<A extends Annotation,P extends Policy<A>>	Describes table entry that finds a policy class from the annotation class that configures it.

Constructor Summary

Constructors

Constructor	Description
InterceptorCommonLibrary()

Method Summary

Modifier and Type	Method	Description
static <T> InterceptorCommonLibrary.CategoriseFieldResult	categoriseFormFields(Collection<Field> formFields)	Sets how each form field should be converted.
static <T> boolean	checkCollectionRecipientDataType(Field recipientField, Class<T> recipientClass)	Returns whether converting validator can convert form field value to the recipient field's type.
static boolean	checkFieldClass(Class<?> conversionClass, Class<?> fieldClass)	Returns whether a converter's target data type can convert to the form field's data type.
static boolean	checkRecipientDataType(Field recipientField, Class<?> recipientClass)	Returns whether converting validator can convert form field value to the recipient field's type.
static boolean	fieldIsNotForm(Field actionField)	Returns whether a viewer Action's member field is definitely not a form.
static boolean	fieldReceivedStoredForm(Field actionField)	Returns whether field of an Action received a stored form.
static Collection<Field>	filterFormFields(Collection<Field> allFormFields)	Returns form member fields that can plausibly receive form data.
static <T> void	formatCollectionFormField(Object form, Collection<Field> allFormFields, Field formField, InterceptorCommonLibrary.ConfiguredPolicy<T> configuredPolicy)	Sets text for not yet set form field.
static <T> void	formatFormField(Object form, Collection<Field> allFormFields, Field formField, InterceptorCommonLibrary.ConfiguredPolicy<T> configuredPolicy)	Sets text for not yet set form field.
static Map<String,Map<String,Object>>	getActionContextFormattedForms()	Returns the formatted forms created by FormFormatterInterceptor.
static <T> InterceptorCommonLibrary.AnnotationEntries<T>	getAnnotationEntries(Field formField)	Returns all recognised annotations and their linked policies.
static <T> InterceptorCommonLibrary.ConfiguredPolicy<T>	getAnnotationUsage(Annotation annotation)	Returns validator (and formatter) that processes an annotated form field, or result of NA type if not recognised.
static CollectionConverter<?,?>	getDefaultCollectionConverter(Field field)	Returns default collection converter for a collection form field or display field, or null if none available.
static Converter<?,?>	getDefaultConverter(Field field)	Returns default converter for a single value form field or display field, or null if none available.
static String	getDefaultRecipientName(String fieldName)	Returns the default field name to receive a converted form field.
static <A extends Annotation, T> Converter<A,T>	getDefaultRecognisedConverter(Class<? extends Converter<A,T>> converterClass, Class<? extends A> annotationClass)
static Object	getForm(Object action)	Returns the object expected to receive submitted form data on behalf of an Action.
static InterceptorCommonLibrary.FormFieldCategory	getFormFieldCategory(InterceptorCommonLibrary.FieldUsage<?> fieldUsage)
static Collection<Field>	getFormFields(Collection<Field> allFields)	Returns form member fields that can plausibly receive form data.
static <T> InterceptorCommonLibrary.FieldUsage<T>	getFormFieldUsage(Field formField)	Returns what policies should apply to a form field, such as conversion and validation, or throws FormFieldAnnotationTypeMismatchException if any annotation does not match the field's type.
static List<InterceptorCommonLibrary.PolicyEntry<?,?>>	getPolicies()	Returns list of all built-in adjusters, converters, and validators.
static Collection<Field>	getProperties(Class<?> type)	Returns all properties of a class, even private ones, whether directly declared or inherited.
static Field	getProperty(Class<?> type, String name)	Returns property of a class, even if private or inherited, or null if not found.
static FormStoreInterceptor.StoredForm	getStoredForm()	Returns a processed form stored in session.
static <T> Class<T>	getTypeFromCollectionField(Field recipientField)	Returns element type of a collection-based form field.
static <T> Collection<T>	makeCollectionForRecipient(Class<?> recipientClass)	Returns an empty, modifiable collection from a collection type.

Methods inherited from class java.lang.Object

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

Constructor Details

InterceptorCommonLibrary

public InterceptorCommonLibrary()

Method Details

categoriseFormFields

public static <T>
InterceptorCommonLibrary.CategoriseFieldResult categoriseFormFields(Collection<Field> formFields)

Sets how each form field should be converted.

checkCollectionRecipientDataType

public static <T> boolean checkCollectionRecipientDataType(Field recipientField,
 Class<T> recipientClass)

Returns whether converting validator can convert form field value to the recipient field's type.

checkFieldClass

public static boolean checkFieldClass(Class<?> conversionClass,
 Class<?> fieldClass)

Returns whether a converter's target data type can convert to the form field's data type.

checkRecipientDataType

public static boolean checkRecipientDataType(Field recipientField,
 Class<?> recipientClass)

Returns whether converting validator can convert form field value to the recipient field's type.

fieldIsNotForm

public static boolean fieldIsNotForm(Field actionField)

Returns whether a viewer Action's member field is definitely not a form.

fieldReceivedStoredForm

public static boolean fieldReceivedStoredForm(Field actionField)

Returns whether field of an Action received a stored form.

filterFormFields

public static Collection<Field> filterFormFields(Collection<Field> allFormFields)

Returns form member fields that can plausibly receive form data. This excludes static and final fields.

formatCollectionFormField

public static <T> void formatCollectionFormField(Object form,
 Collection<Field> allFormFields,
 Field formField,
 InterceptorCommonLibrary.ConfiguredPolicy<T> configuredPolicy)

Sets text for not yet set form field.

formatFormField

public static <T> void formatFormField(Object form,
 Collection<Field> allFormFields,
 Field formField,
 InterceptorCommonLibrary.ConfiguredPolicy<T> configuredPolicy)

Sets text for not yet set form field.

getActionContextFormattedForms

public static Map<String,Map<String,Object>> getActionContextFormattedForms()

Returns the formatted forms created by FormFormatterInterceptor. As these are only created by a Struts 2 pre-result listener set by the Interceptor, no result is available till then. This is meant for the Interceptor and Actions should use StrutsMiscellaneousLibrary.getFormattedForms() as it's easier to use.

getAnnotationEntries

public static <T>
InterceptorCommonLibrary.AnnotationEntries<T> getAnnotationEntries(Field formField)

Returns all recognised annotations and their linked policies.

getAnnotationUsage

public static <T>
InterceptorCommonLibrary.ConfiguredPolicy<T> getAnnotationUsage(Annotation annotation)
                                                         throws Exception

Returns validator (and formatter) that processes an annotated form field, or result of NA type if not recognised.

Throws:

Exception

getDefaultCollectionConverter

public static CollectionConverter<?,?> getDefaultCollectionConverter(Field field)

Returns default collection converter for a collection form field or display field, or null if none available.

getDefaultConverter

public static Converter<?,?> getDefaultConverter(Field field)

Returns default converter for a single value form field or display field, or null if none available.

getDefaultRecognisedConverter

public static <A extends Annotation,
T>
Converter<A,T> getDefaultRecognisedConverter(Class<? extends Converter<A,T>> converterClass,
 Class<? extends A> annotationClass)

getDefaultRecipientName

public static String getDefaultRecipientName(String fieldName)

Returns the default field name to receive a converted form field.

getForm

public static Object getForm(Object action)

Returns the object expected to receive submitted form data on behalf of an Action. This can be the model of a ModelDriven Action, or the Action itself.

getFormFieldCategory

public static InterceptorCommonLibrary.FormFieldCategory getFormFieldCategory(InterceptorCommonLibrary.FieldUsage<?> fieldUsage)

getFormFields

public static Collection<Field> getFormFields(Collection<Field> allFields)

Returns form member fields that can plausibly receive form data. This excludes static and final fields.

getFormFieldUsage

public static <T>
InterceptorCommonLibrary.FieldUsage<T> getFormFieldUsage(Field formField)
                                                  throws FormFieldAnnotationTypeMismatchException

Returns what policies should apply to a form field, such as conversion and validation, or throws FormFieldAnnotationTypeMismatchException if any annotation does not match the field's type.

Throws:

FormFieldAnnotationTypeMismatchException

getPolicies

public static List<InterceptorCommonLibrary.PolicyEntry<?,?>> getPolicies()

Returns list of all built-in adjusters, converters, and validators.

getProperties

public static Collection<Field> getProperties(Class<?> type)

Returns all properties of a class, even private ones, whether directly declared or inherited.

getProperty

public static Field getProperty(Class<?> type,
 String name)

Returns property of a class, even if private or inherited, or null if not found.

getStoredForm

public static FormStoreInterceptor.StoredForm getStoredForm()

Returns a processed form stored in session.

getTypeFromCollectionField

public static <T> Class<T> getTypeFromCollectionField(Field recipientField)

Returns element type of a collection-based form field.

makeCollectionForRecipient

public static <T> Collection<T> makeCollectionForRecipient(Class<?> recipientClass)

Returns an empty, modifiable collection from a collection type.