org.appng.api.support

Class RequestSupportImpl

java.lang.Object

org.appng.api.support.RequestSupportImpl

All Implemented Interfaces:

RequestSupport, org.springframework.beans.factory.InitializingBean, org.springframework.core.convert.ConversionService

public class RequestSupportImpl
extends Object
implements RequestSupport

Default RequestSupport implementation

Author:

Matthias Müller

Field Summary

Fields

Modifier and Type	Field and Description
protected org.springframework.core.convert.ConversionService	conversionService
protected static String	CURRENT
protected Environment	environment
protected ExpressionEvaluator	expressionEvaluator
protected FieldConversionFactory	fieldConverter
protected List<FieldType>	FILE_TYPES
protected List<FieldType>	LIST_TYPES
protected org.springframework.context.MessageSource	messageSource

Constructor Summary

Constructors

Constructor and Description
RequestSupportImpl()
RequestSupportImpl(org.springframework.core.convert.ConversionService conversionService, Environment environment, org.springframework.context.MessageSource messageSource)

Method Summary

Modifier and Type	Method and Description
void	addErrorMessage(FieldProcessor fp, MessageParam messageParam) Adds an error to the FieldProcessor using FieldProcessor.addErrorMessage(String).
void	addErrorMessage(FieldProcessor fp, MessageParam messageParam, String fieldBinding) Adds an error to a FieldDef using FieldProcessor.addErrorMessage(org.appng.xml.platform.FieldDef, String).
void	afterPropertiesSet()
boolean	canConvert(Class<?> sourceType, Class<?> targetType)
boolean	canConvert(org.springframework.core.convert.TypeDescriptor sourceType, org.springframework.core.convert.TypeDescriptor targetType)
<T> T	convert(Object source, Class<T> target)
<T> T	convert(Object source, Class<T> target, T defaultValue)
Object	convert(Object source, org.springframework.core.convert.TypeDescriptor sourceType, org.springframework.core.convert.TypeDescriptor targetType)
void	fillBindObject(Object instance, FieldProcessor fp, RequestContainer container, ClassLoader classLoader) Fills the given bindobject with the (converted) values provided by a RequestContainer.
Object	getBindObject(FieldProcessor fp, RequestContainer container, ClassLoader classLoader) Creates, fills and returns a new bindobject.
org.springframework.core.convert.ConversionService	getConversionService()
<T> T	getDefaultIfNull(T source, T defaultValue)
Environment	getEnvironment()
ExpressionEvaluator	getExpressionEvaluator()
FieldConverter	getFieldConverter()
String	getMessage(String key, Object... args) Retrieves a message from the underlying MessageSource, using the Locale provided by Environment.getLocale().
org.springframework.context.MessageSource	getMessageSource()
void	handleException(FieldProcessor fp, Exception e) Handles an Exception.
boolean	isFile(FieldType type)
boolean	isListType(FieldType type)
void	setConversionService(org.springframework.core.convert.ConversionService conversionService)
void	setEnvironment(Environment environment)
void	setExpressionEvaluator(ExpressionEvaluator expressionEvaluator)
void	setMessageSource(org.springframework.context.MessageSource messageSource)
<T> void	setPropertyValue(T source, T target, String property) Copies the property from source to target.
<T> void	setPropertyValues(T source, T target, MetaData metaData) Copies the fields defined by the given MetaData from source to target.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.appng.api.RequestSupport

getEnvironment, getFieldConverter, getMessageSource

Field Detail

CURRENT

protected static final String CURRENT

See Also:

Constant Field Values

LIST_TYPES

protected final List<FieldType> LIST_TYPES

FILE_TYPES

protected final List<FieldType> FILE_TYPES

conversionService

protected org.springframework.core.convert.ConversionService conversionService

messageSource

protected org.springframework.context.MessageSource messageSource

environment

protected Environment environment

expressionEvaluator

protected ExpressionEvaluator expressionEvaluator

fieldConverter

protected FieldConversionFactory fieldConverter

Constructor Detail

RequestSupportImpl

public RequestSupportImpl()

RequestSupportImpl

public RequestSupportImpl(org.springframework.core.convert.ConversionService conversionService,
                          Environment environment,
                          org.springframework.context.MessageSource messageSource)

Method Detail

fillBindObject

public final void fillBindObject(Object instance,
                                 FieldProcessor fp,
                                 RequestContainer container,
                                 ClassLoader classLoader)
                          throws BusinessException

Description copied from interface: RequestSupport

Fills the given bindobject with the (converted) values provided by a RequestContainer. The type of the bindobject must match fp.getMetaData().getBindClass(). The MetaData's FieldDefinitions are responsible for which fields are getting filled.

Specified by:

fillBindObject in interface RequestSupport

Parameters:

instance - the bindobject to fill

fp - the current FieldProcessor

container - the RequestContainer used to retrieve the values for filling the bindobject

classLoader - the ClassLoader used to load the bindclass

Throws:

BusinessException -

• if the type of the bindobject is not assignable from the type returned by fp.getMetaData().getBindClass()
• if the type returned by fp.getMetaData().getBindClass() can not be instanciated

getBindObject

public final Object getBindObject(FieldProcessor fp,
                                  RequestContainer container,
                                  ClassLoader classLoader)
                           throws BusinessException

Description copied from interface: RequestSupport

Creates, fills and returns a new bindobject. The type of the returned object is obtained from fp.getMetaData().getBindClass(). The MetaData's FieldDefinitions are responsible for which fields are getting filled.

Specified by:

getBindObject in interface RequestSupport

Parameters:

fp - the current FieldProcessor

container - the RequestContainer used to retrieve the values for filling the bindobject

classLoader - the ClassLoader used to load the bindclass

Returns:

a new bindobject

Throws:

BusinessException - if the bindclass could not be loaded, instantiated or initialized, or if an error occurred during filling the bindobject

See Also:

RequestSupport.fillBindObject(Object, FieldProcessor, RequestContainer, ClassLoader)

convert

public <T> T convert(Object source,
                     Class<T> target,
                     T defaultValue)

getDefaultIfNull

public <T> T getDefaultIfNull(T source,
                              T defaultValue)

getMessage

public String getMessage(String key,
                         Object... args)

Description copied from interface: RequestSupport

Retrieves a message from the underlying MessageSource, using the Locale provided by Environment.getLocale().

Specified by:

getMessage in interface RequestSupport

Parameters:

key - the message key

args - the message arguments

addErrorMessage

public void addErrorMessage(FieldProcessor fp,
                            MessageParam messageParam)

Description copied from interface: RequestSupport

Adds an error to the FieldProcessor using FieldProcessor.addErrorMessage(String). MessageParam.getMessageKey() is used for the message key, MessageParam.getMessageArgs() for the message arguments.

Specified by:

addErrorMessage in interface RequestSupport

Parameters:

fp - a FieldProcessor

messageParam - a MessageParam

See Also:

MessageParam

addErrorMessage

public void addErrorMessage(FieldProcessor fp,
                            MessageParam messageParam,
                            String fieldBinding)

Description copied from interface: RequestSupport

Adds an error to a FieldDef using FieldProcessor.addErrorMessage(org.appng.xml.platform.FieldDef, String). MessageParam.getMessageKey() is used for the message key, MessageParam.getMessageArgs() for the message arguments.

Specified by:

addErrorMessage in interface RequestSupport

Parameters:

fp - a FieldProcessor

messageParam - a MessageParam

fieldBinding - the binding of the FieldDef to add the error to

See Also:

MessageParam

handleException

public void handleException(FieldProcessor fp,
                            Exception e)
                     throws BusinessException

Description copied from interface: RequestSupport

Handles an Exception. If the given Exception is a BusinessException, the very same BusinessException is being re-thrown. Otherwise, the Exception is being wrapped into a new BusinessException which is then being thrown.
If the given Exception is a MessageParam, RequestSupport.addErrorMessage(FieldProcessor, MessageParam) is being called.

Specified by:

handleException in interface RequestSupport

Parameters:

fp - a FieldProcessor

e - an Exception

Throws:

BusinessException

See Also:

MessageParam, RequestSupport.addErrorMessage(FieldProcessor, MessageParam)

setPropertyValues

public <T> void setPropertyValues(T source,
                                  T target,
                                  MetaData metaData)

Description copied from interface: RequestSupport

Copies the fields defined by the given MetaData from source to target.

Specified by:

setPropertyValues in interface RequestSupport

Parameters:

source - the source object to read the fields from

target - the target object to write the fields to

metaData - the MetaData

setPropertyValue

public <T> void setPropertyValue(T source,
                                 T target,
                                 String property)

Description copied from interface: RequestSupport

Copies the property from source to target.

Specified by:

setPropertyValue in interface RequestSupport

Parameters:

source - the source object to read the property from

target - the target object to write the property to

property - the name of the property to set

canConvert

public boolean canConvert(Class<?> sourceType,
                          Class<?> targetType)

Specified by:

canConvert in interface org.springframework.core.convert.ConversionService

canConvert

public boolean canConvert(org.springframework.core.convert.TypeDescriptor sourceType,
                          org.springframework.core.convert.TypeDescriptor targetType)

Specified by:

canConvert in interface org.springframework.core.convert.ConversionService

convert

public Object convert(Object source,
                      org.springframework.core.convert.TypeDescriptor sourceType,
                      org.springframework.core.convert.TypeDescriptor targetType)

Specified by:

convert in interface org.springframework.core.convert.ConversionService

convert

public <T> T convert(Object source,
                     Class<T> target)

Specified by:

convert in interface org.springframework.core.convert.ConversionService

getConversionService

public org.springframework.core.convert.ConversionService getConversionService()

setConversionService

public void setConversionService(org.springframework.core.convert.ConversionService conversionService)

getMessageSource

public org.springframework.context.MessageSource getMessageSource()

setMessageSource

public void setMessageSource(org.springframework.context.MessageSource messageSource)

getEnvironment

public Environment getEnvironment()

setEnvironment

public void setEnvironment(Environment environment)

getExpressionEvaluator

public ExpressionEvaluator getExpressionEvaluator()

setExpressionEvaluator

public void setExpressionEvaluator(ExpressionEvaluator expressionEvaluator)

isFile

public final boolean isFile(FieldType type)

isListType

public final boolean isListType(FieldType type)

getFieldConverter

public FieldConverter getFieldConverter()

afterPropertiesSet

public void afterPropertiesSet()

Specified by:

afterPropertiesSet in interface org.springframework.beans.factory.InitializingBean