LazyModel (WicketStuff Core Parent 6.0-SNAPSHOT API)

java.lang.Object
- org.wicketstuff.lazymodel.LazyModel<T>

All Implemented Interfaces:: Serializable, org.apache.wicket.model.IDetachable, org.apache.wicket.model.IModel<T>, org.apache.wicket.model.IObjectClassAwareModel<T>, org.apache.wicket.model.IPropertyReflectionAwareModel<T>, org.apache.wicket.util.io.IClusterable, IObjectTypeAwareModel<T>

public class LazyModel<T>
extends Object
implements org.apache.wicket.model.IModel<T>, org.apache.wicket.model.IObjectClassAwareModel<T>, IObjectTypeAwareModel<T>, org.apache.wicket.model.IPropertyReflectionAwareModel<T>

A model for lazy evaluations:

 IModel<String> model = model(from(a).getB().getStrings().get("key"));
 
 model.setObject("value");
 
 String string = model.getObject();

Evaluations can be nested too:

 IModel<C> model = model(from(a).getB().getCs().get(from(d).getIndex()));

Author:: svenmeier
See Also:: Serialized Form

Field Summary

Fields
Modifier and Type	Field and Description
`static IMethodResolver`	`methodResolver` The resolver for `Method`s.
`protected Object`	`stack` Each invoked method's identifier followed by its arguments.
`protected Object`	`target` The target of the evaluation.

Method Summary

Methods
Modifier and Type	Method and Description
`LazyModel<T>`	`bind(Object target)` Bind this model to a new target.
`void`	`detach()`
`static <T> T`	`from(Class<T> targetType)` Start a lazy evaluation.
`static <T> T`	`from(org.apache.wicket.model.IModel<T> target)` Start a lazy evaluation.
`static <T> T`	`from(T target)` Start a lazy evaluation.
`T`	`getObject()` Get the evaluation result.
`Class<T>`	`getObjectClass()` Get the evaluation result's class.
`Type`	`getObjectType()` Get the evaluation result's type.
`String`	`getPath()` Get the invoked method path for the evaluation.
`Field`	`getPropertyField()` LazyModel does not support field access.
`Method`	`getPropertyGetter()` Get the final getter of the evaluation.
`Method`	`getPropertySetter()` Get the final setter of the evaluation.
`Object`	`getTarget()` Get the target of this evaluation.
`org.apache.wicket.model.IModel<T>`	`loadableDetachable()` Wrap this model in a `LoadableDetachableModel`.
`static <R> LazyModel<R>`	`model(R result)` Create a model for the given evaluation result.
`static <R> String`	`path(R result)` Get the method invocation path for an evaluation.
`void`	`setObject(T result)` Set the evaluation result.
`String`	`toString()` String representation of the evaluation.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - methodResolver
```
public static IMethodResolver methodResolver
```
    The resolver for Methods.
  - target
```
protected final Object target
```
    The target of the evaluation.
  - stack
```
protected final Object stack
```
    Each invoked method's identifier followed by its arguments.
- Method Detail
  - loadableDetachable
```
public org.apache.wicket.model.IModel<T> loadableDetachable()
```
    Wrap this model in a LoadableDetachableModel.
    
    Returns:
    model wrapper
  - getObjectClass
```
public Class<T> getObjectClass()
```
    Get the evaluation result's class.
    
    Specified by:
    
    getObjectClass in interface org.apache.wicket.model.IObjectClassAwareModel<T>
    
    Returns:
    result class or null if it cannot be determined
  - getObjectType
```
public Type getObjectType()
```
    Get the evaluation result's type.
    
    Specified by:
    
    getObjectType in interface IObjectTypeAwareModel<T>
    
    Returns:
    Class, ParameterizedType or null if not available
  - getPropertyField
```
public Field getPropertyField()
```
    LazyModel does not support field access.
    
    Specified by:
    
    getPropertyField in interface org.apache.wicket.model.IPropertyReflectionAwareModel<T>
    
    Returns:
    always null
  - getPropertyGetter
```
public Method getPropertyGetter()
```
    Get the final getter of the evaluation.
    
    Specified by:
    
    getPropertyGetter in interface org.apache.wicket.model.IPropertyReflectionAwareModel<T>
    
    Returns:
    method representing a JavaBeans getter or null
  - getPropertySetter
```
public Method getPropertySetter()
```
    Get the final setter of the evaluation.
    
    Specified by:
    
    getPropertySetter in interface org.apache.wicket.model.IPropertyReflectionAwareModel<T>
    
    Returns:
    method representing a JavaBeans setter or null
  - detach
```
public void detach()
```
    Specified by:
    
    detach in interface org.apache.wicket.model.IDetachable
  - getObject
```
public T getObject()
```
    Get the evaluation result.
    
    Specified by:
    
    getObject in interface org.apache.wicket.model.IModel<T>
    
    Returns:
    evaluation result
    
    Throws:
    
    org.apache.wicket.WicketRuntimeException - if this model is not bound to a target
  - setObject
```
public void setObject(T result)
```
    Set the evaluation result.
    
    Specified by:
    
    setObject in interface org.apache.wicket.model.IModel<T>
    
    Parameters:
    evaluation - result
    
    Throws:
    
    org.apache.wicket.WicketRuntimeException - if this model is not bound to a target
  - getTarget
```
public Object getTarget()
```
    Get the target of this evaluation.
    
    Returns:
    target, may be null if this model is not bound to a target
  - bind
```
public LazyModel<T> bind(Object target)
```
    Bind this model to a new target.
    
    Parameters:
    target - target to bind to
    
    Returns:
    bound model
  - toString
```
public String toString()
```
    String representation of the evaluation.
    
    Overrides:
    
    toString in class Object
    
    See Also:
    getPath()
  - getPath
```
public String getPath()
```
    Get the invoked method path for the evaluation.
    For evaluations accessing simple properties only, the representation equals the property expression of a corresponding PropertyModel.
    
    Returns:
    invoked method path
    
    Throws:
    
    org.apache.wicket.WicketRuntimeException - if this model is not bound
    See Also:
    AbstractPropertyModel.getPropertyExpression()
  - from
```
public static <T> T from(T target)
```
    Start a lazy evaluation.
    
    Parameters:
    target - the target object
    
    Returns:
    a result proxy for further evaluation
  - from
```
public static <T> T from(Class<T> targetType)
```
    Start a lazy evaluation.
    
    Parameters:
    targetType - class of target object
    
    Returns:
    a result proxy for further evaluation
  - from
```
public static <T> T from(org.apache.wicket.model.IModel<T> target)
```
    Start a lazy evaluation.
    
    Parameters:
    target - model holding the target object
    
    Returns:
    a result proxy for further evaluation
  - model
```
public static <R> LazyModel<R> model(R result)
```
    Create a model for the given evaluation result.
    
    Parameters:
    result - evaluation result
    
    Returns:
    lazy model
  - path
```
public static <R> String path(R result)
```
    Get the method invocation path for an evaluation.
    
    Parameters:
    result - evaluation result
    
    Returns:
    method invocation path

Class LazyModel<T>

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

methodResolver

target

stack

Method Detail

loadableDetachable

getObjectClass

getObjectType

getPropertyField

getPropertyGetter

getPropertySetter

detach

getObject

setObject

getTarget

bind

toString

getPath

from

from

from

model

path