com.smartgwt.client.bean

Class BeanFactory<BeanClass>

java.lang.Object

com.smartgwt.client.bean.BeanFactory<BeanClass>

Direct Known Subclasses:

BeanFactoryForBaseWidget, BeanFactoryForDataClass

public abstract class BeanFactory<BeanClass>
extends java.lang.Object

Utility class for creating objects and setting properties at run-time via reflection-like mechanisms.

Subclasses must be generated for each Class you want to use. To trigger the generation of subclasses, see the documentation on registering classes for reflection.

Once the appropriate subclass has been created, you can use the class via the static methods.

For the moment, this class only works with subclasses of BaseWidget or FormItem.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	BeanFactory.CanvasMetaFactory Interface used to trigger the generation and registration of reflection metadata for Canvas and all its subclasses found in the classpath (including your custom subclasses).
static interface	BeanFactory.FormItemMetaFactory Interface used to trigger the generation and registration of reflection metadata for FormItem and all its subclasses found in the classpath (including your custom subclasses).
static interface	BeanFactory.MetaFactory An interface which you can extend in order to register classes with the BeanFactory reflection mechanism.

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.Map<java.lang.String,BeanProperty<BeanClass>>	properties
protected com.google.gwt.core.client.JavaScriptObject	sgwtFactory
protected BeanFactory	superclassFactory

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	BeanFactory() The constructor is protected because you should not create BeanFactory instances directly.

Method Summary

Methods

Modifier and Type	Method and Description
protected BeanFactory<?>	createSuperclassFactory()
abstract com.google.gwt.core.client.JavaScriptObject	doGetOrCreateJsObj(java.lang.Object bean)
java.lang.Object	doGetProperty(java.lang.Object bean, java.lang.String propertyName)
java.lang.String	doGetPropertyAsString(java.lang.Object bean, java.lang.String propertyName)
void	doSetProperty(java.lang.Object bean, java.lang.String propertyName, java.lang.Object value)
java.lang.String[]	getAttributes()
static java.lang.String[]	getAttributes(java.lang.Class<?> beanClass) Gets an array of the names of the properties of a class.
static java.lang.String[]	getAttributes(java.lang.String beanClassName) Gets an array of the names of the properties of a class.
abstract java.lang.Class<BeanClass>	getBeanClass()
java.lang.String	getBeanClassName()
static BeanFactory<?>	getFactory(java.lang.Class<?> klass)
static BeanFactory<?>	getFactory(java.lang.Object object)
static BeanFactory<?>	getFactory(java.lang.String className)
protected abstract java.lang.Object	getJavascriptProperty(BeanClass bean, java.lang.String propertyName)
protected abstract com.google.gwt.core.client.JsArray<com.google.gwt.core.client.JavaScriptObject>	getMethods()
static com.google.gwt.core.client.JavaScriptObject	getOrCreateJsObj(java.lang.Object bean)
protected abstract BeanProperty<BeanClass>[]	getProperties(com.google.gwt.core.client.JsArray<com.google.gwt.core.client.JavaScriptObject> methods)
static java.lang.Object	getProperty(java.lang.Object bean, java.lang.String property) Gets a property of a bean.
static java.lang.String	getPropertyAsString(java.lang.Object bean, java.lang.String property) Gets a property of a bean as a String.
static com.google.gwt.core.client.JavaScriptObject	getSGWTModule()
protected java.lang.Class	getSuperclass()
abstract BeanClass	newInstance()
static java.lang.Object	newInstance(java.lang.Class<?> klass) Create an instance based on the provided class object.
static java.lang.Object	newInstance(java.lang.String className) Create an instance based on the provided class name.
protected static java.lang.IllegalStateException	noFactoryException(java.lang.Class<?> klass)
protected static java.lang.IllegalStateException	noFactoryException(java.lang.String name)
void	registerClassNameWithSGWTFactory()
protected static void	registerFactory(BeanFactory<?> factory)
protected abstract void	registerValueTypes()
protected abstract void	setJavascriptProperty(BeanClass bean, java.lang.String propertyName, java.lang.Object value)
static void	setProperty(java.lang.Object bean, java.lang.String property, java.lang.Object value) Sets a property of a bean to a value.

Methods inherited from class java.lang.Object

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

Field Detail

superclassFactory

protected BeanFactory superclassFactory

properties

protected java.util.Map<java.lang.String,BeanProperty<BeanClass>> properties

sgwtFactory

protected com.google.gwt.core.client.JavaScriptObject sgwtFactory

Constructor Detail

BeanFactory

protected BeanFactory()

The constructor is protected because you should not create BeanFactory instances directly. Instead, use BeanFactory.MetaFactory, BeanFactory.CanvasMetaFactory or BeanFactory.FormItemMetaFactory to create bean factories, and then use the static methods on BeanFactory.

See Also:

BeanFactory.MetaFactory, BeanFactory.CanvasMetaFactory

Method Detail

getSGWTModule

public static com.google.gwt.core.client.JavaScriptObject getSGWTModule()

getFactory

public static BeanFactory<?> getFactory(java.lang.String className)

getFactory

public static BeanFactory<?> getFactory(java.lang.Class<?> klass)

getFactory

public static BeanFactory<?> getFactory(java.lang.Object object)

registerFactory

protected static void registerFactory(BeanFactory<?> factory)

noFactoryException

protected static java.lang.IllegalStateException noFactoryException(java.lang.String name)

noFactoryException

protected static java.lang.IllegalStateException noFactoryException(java.lang.Class<?> klass)

newInstance

public static java.lang.Object newInstance(java.lang.String className)

Create an instance based on the provided class name.

Parameters:

className - the class name

Returns:

a new instance of the class

Throws:

java.lang.IllegalStateException - If no factory has been generated for the className

newInstance

public static java.lang.Object newInstance(java.lang.Class<?> klass)

Create an instance based on the provided class object.

Parameters:

klass - the class object

Returns:

a new instance of the class

Throws:

java.lang.IllegalStateException - If no factory has been generated for the klass

setProperty

public static void setProperty(java.lang.Object bean,
               java.lang.String property,
               java.lang.Object value)

Sets a property of a bean to a value.

Parameters:

bean - The object whose property is to be set

property - The name of the property

value - The value to set

Throws:

java.lang.IllegalStateException - If no factory has been generated for the bean's class

java.lang.IllegalArgumentException - If there is no appropriate setter for the value

getProperty

public static java.lang.Object getProperty(java.lang.Object bean,
                           java.lang.String property)

Gets a property of a bean.

Parameters:

bean - The object whose property to get

property - The name of the property

Throws:

java.lang.IllegalStateException - If no factory has been generated for the bean's class

getPropertyAsString

public static java.lang.String getPropertyAsString(java.lang.Object bean,
                                   java.lang.String property)

Gets a property of a bean as a String. In simple cases, this will be equivalent to getProperty().toString(). However, if there are multiple getters available, it will prefer getters that actually return strings (e.g. getWidthAsString() would be preferred to getWidth().toString()).

Parameters:

bean - The object whose property to get

property - The name of the property

Throws:

java.lang.IllegalStateException - If no factory has been generated for the bean's class

getAttributes

public static java.lang.String[] getAttributes(java.lang.String beanClassName)

Gets an array of the names of the properties of a class.

Parameters:

className - The name of the class

Throws:

java.lang.IllegalStateException - If no factory has been generated for the class

getAttributes

public static java.lang.String[] getAttributes(java.lang.Class<?> beanClass)

Gets an array of the names of the properties of a class.

Parameters:

klass - The klass object

Throws:

java.lang.IllegalStateException - If no factory has been generated for the class

getOrCreateJsObj

public static com.google.gwt.core.client.JavaScriptObject getOrCreateJsObj(java.lang.Object bean)

getSuperclass

protected java.lang.Class getSuperclass()

createSuperclassFactory

protected BeanFactory<?> createSuperclassFactory()

registerValueTypes

protected abstract void registerValueTypes()

getMethods

protected abstract com.google.gwt.core.client.JsArray<com.google.gwt.core.client.JavaScriptObject> getMethods()

getProperties

protected abstract BeanProperty<BeanClass>[] getProperties(com.google.gwt.core.client.JsArray<com.google.gwt.core.client.JavaScriptObject> methods)

registerClassNameWithSGWTFactory

public void registerClassNameWithSGWTFactory()

getBeanClass

public abstract java.lang.Class<BeanClass> getBeanClass()

getBeanClassName

public java.lang.String getBeanClassName()

newInstance

public abstract BeanClass newInstance()

doSetProperty

public void doSetProperty(java.lang.Object bean,
                 java.lang.String propertyName,
                 java.lang.Object value)

getAttributes

public java.lang.String[] getAttributes()

doGetProperty

public java.lang.Object doGetProperty(java.lang.Object bean,
                             java.lang.String propertyName)

doGetPropertyAsString

public java.lang.String doGetPropertyAsString(java.lang.Object bean,
                                     java.lang.String propertyName)

setJavascriptProperty

protected abstract void setJavascriptProperty(BeanClass bean,
                         java.lang.String propertyName,
                         java.lang.Object value)

getJavascriptProperty

protected abstract java.lang.Object getJavascriptProperty(BeanClass bean,
                                     java.lang.String propertyName)

doGetOrCreateJsObj

public abstract com.google.gwt.core.client.JavaScriptObject doGetOrCreateJsObj(java.lang.Object bean)