- java.lang.Object
-
- javax.el.BeanNameResolver
-
public abstract class BeanNameResolver extends Object
Resolves a bean by its known name. This class can be extended to return a bean object given its name, to set a value to an existing bean, or to create a bean with the value.- Since:
- EL 3.0
- See Also:
BeanNameELResolver
-
-
Constructor Summary
Constructors Constructor and Description BeanNameResolver()
-
Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method and Description booleancanCreateBean(String beanName)Allow creating a bean of the given name if it does not exist.ObjectgetBean(String beanName)Returns the bean known by its name.booleanisNameResolved(String beanName)Returns whether the given name is resolved by the BeanNameResolverbooleanisReadOnly(String beanName)Indicates if the bean of the given name is read-only or writablevoidsetBeanValue(String beanName, Object value)Sets a value to a bean of the given name.
-
-
-
Method Detail
-
isNameResolved
public boolean isNameResolved(String beanName)
Returns whether the given name is resolved by the BeanNameResolver- Parameters:
beanName- The name of the bean.- Returns:
- true if the name is resolved by this BeanNameResolver; false otherwise.
-
getBean
public Object getBean(String beanName)
Returns the bean known by its name.- Parameters:
beanName- The name of the bean.- Returns:
- The bean with the given name. Can be
null.
-
setBeanValue
public void setBeanValue(String beanName, Object value) throws PropertyNotWritableException
Sets a value to a bean of the given name. If the bean of the given name does not exist and ifcanCreateBean(java.lang.String)istrue, one is created with the given value.- Parameters:
beanName- The name of the beanvalue- The value to set the bean to. Can benull.- Throws:
PropertyNotWritableException- if the bean cannot be modified or created.
-
isReadOnly
public boolean isReadOnly(String beanName)
Indicates if the bean of the given name is read-only or writable- Parameters:
beanName- The name of the bean- Returns:
trueif the bean can be set to a new value.falseotherwise.
-
canCreateBean
public boolean canCreateBean(String beanName)
Allow creating a bean of the given name if it does not exist.- Parameters:
beanName- The name of the bean- Returns:
trueif bean creation is supportedfalseotherwise.
-
-
Document created the 11/06/2005, last modified the 18/08/2025
Source of the printed document:https://www.gaudry.be/en/java-api-javaee-rf-javax/el/beannameresolver.html
The infobrol is a personal site whose content is my sole responsibility. The text is available under CreativeCommons license (BY-NC-SA). More info on the terms of use and the author.
References
These references and links indicate documents consulted during the writing of this page, or which may provide additional information, but the authors of these sources can not be held responsible for the content of this page.
The author of this site is solely responsible for the way in which the various concepts, and the freedoms that are taken with the reference works, are presented here. Remember that you must cross multiple source information to reduce the risk of errors.