Module java.desktop
Package java.beans.beancontext

Interface BeanContext

All Superinterfaces:
BeanContextChild, Collection, DesignMode, Iterable, Visibility
All Known Subinterfaces:
BeanContextServices
All Known Implementing Classes:
BeanContextServicesSupport, BeanContextSupport
public interface BeanContext
extends BeanContextChild, Collection, DesignMode, Visibility

The BeanContext acts a logical hierarchical container for JavaBeans.

Since:
1.2
See Also:
Beans, BeanContextChild, BeanContextMembershipListener, PropertyChangeEvent, DesignMode, Visibility, Collection

  • Field Details

    • globalHierarchyLock

      static final Object globalHierarchyLock
      This global lock is used by both BeanContext and BeanContextServices implementors to serialize changes in a BeanContext hierarchy and any service requests etc.

  • Method Details

    • instantiateChild

      Object instantiateChild​(String beanName) throws IOException, ClassNotFoundException
      Instantiate the javaBean named as a child of this BeanContext. The implementation of the JavaBean is derived from the value of the beanName parameter, and is defined by the java.beans.Beans.instantiate() method.
      Parameters:
      beanName - The name of the JavaBean to instantiate as a child of this BeanContext
      Returns:
      a javaBean named as a child of this BeanContext
      Throws:
      IOException - if an IO problem occurs
      ClassNotFoundException - if the class identified by the beanName parameter is not found

    • getResourceAsStream

      InputStream getResourceAsStream​(String name, BeanContextChild bcc) throws IllegalArgumentException
      Analagous to java.lang.ClassLoader.getResourceAsStream(), this method allows a BeanContext implementation to interpose behavior between the child Component and underlying ClassLoader.
      Parameters:
      name - the resource name
      bcc - the specified child
      Returns:
      an InputStream for reading the resource, or null if the resource could not be found.
      Throws:
      IllegalArgumentException - if the resource is not valid

    • getResource

      URL getResource​(String name, BeanContextChild bcc) throws IllegalArgumentException
      Analagous to java.lang.ClassLoader.getResource(), this method allows a BeanContext implementation to interpose behavior between the child Component and underlying ClassLoader.
      Parameters:
      name - the resource name
      bcc - the specified child
      Returns:
      a URL for the named resource for the specified child
      Throws:
      IllegalArgumentException - if the resource is not valid

    • addBeanContextMembershipListener

      void addBeanContextMembershipListener​(BeanContextMembershipListener bcml)
      Adds the specified BeanContextMembershipListener to receive BeanContextMembershipEvents from this BeanContext whenever it adds or removes a child Component(s).
      Parameters:
      bcml - the BeanContextMembershipListener to be added

    • removeBeanContextMembershipListener

      void removeBeanContextMembershipListener​(BeanContextMembershipListener bcml)
      Removes the specified BeanContextMembershipListener so that it no longer receives BeanContextMembershipEvents when the child Component(s) are added or removed.
      Parameters:
      bcml - the BeanContextMembershipListener to be removed