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BeanContext.java
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132 lines (119 loc) · 4 KB
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/*
* Copyright (c) 1997, 2006, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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package java.beans.beancontext;
import java.beans.DesignMode;
import java.beans.Visibility;
import java.io.InputStream;
import java.io.IOException;
import java.net.URL;
import java.util.Collection;
import java.util.Locale;
/**
* <p>
* The BeanContext acts a logical hierarchical container for JavaBeans.
* </p>
*
* @author Laurence P. G. Cable
* @since 1.2
*
* @see java.beans.Beans
* @see java.beans.beancontext.BeanContextChild
* @see java.beans.beancontext.BeanContextMembershipListener
* @see java.beans.PropertyChangeEvent
* @see java.beans.DesignMode
* @see java.beans.Visibility
* @see java.util.Collection
*/
public interface BeanContext extends BeanContextChild, Collection, DesignMode, Visibility {
/**
* Instantiate the javaBean named as a
* child of this <code>BeanContext</code>.
* The implementation of the JavaBean is
* derived from the value of the beanName parameter,
* and is defined by the
* <code>java.beans.Beans.instantiate()</code> method.
*
* @param beanName The name of the JavaBean to instantiate
* as a child of this <code>BeanContext</code>
* @throws <code>IOException</code>
* @throws <code>ClassNotFoundException</code> if the class identified
* by the beanName parameter is not found
*/
Object instantiateChild(String beanName) throws IOException, ClassNotFoundException;
/**
* Analagous to <code>java.lang.ClassLoader.getResourceAsStream()</code>,
* this method allows a <code>BeanContext</code> implementation
* to interpose behavior between the child <code>Component</code>
* and underlying <code>ClassLoader</code>.
*
* @param name the resource name
* @param bcc the specified child
* @return an <code>InputStream</code> for reading the resource,
* or <code>null</code> if the resource could not
* be found.
* @throws <code>IllegalArgumentException</code> if
* the resource is not valid
*/
InputStream getResourceAsStream(String name, BeanContextChild bcc) throws IllegalArgumentException;
/**
* Analagous to <code>java.lang.ClassLoader.getResource()</code>, this
* method allows a <code>BeanContext</code> implementation to interpose
* behavior between the child <code>Component</code>
* and underlying <code>ClassLoader</code>.
*
* @param name the resource name
* @param bcc the specified child
* @return a <code>URL</code> for the named
* resource for the specified child
* @throws <code>IllegalArgumentException</code>
* if the resource is not valid
*/
URL getResource(String name, BeanContextChild bcc) throws IllegalArgumentException;
/**
* Adds the specified <code>BeanContextMembershipListener</code>
* to receive <code>BeanContextMembershipEvents</code> from
* this <code>BeanContext</code> whenever it adds
* or removes a child <code>Component</code>(s).
*
* @param bcml the <code>BeanContextMembershipListener</code> to be added
*/
void addBeanContextMembershipListener(BeanContextMembershipListener bcml);
/**
* Removes the specified <code>BeanContextMembershipListener</code>
* so that it no longer receives <code>BeanContextMembershipEvent</code>s
* when the child <code>Component</code>(s) are added or removed.
*
* @param bcml the <code>BeanContextMembershipListener</code>
* to be removed
*/
void removeBeanContextMembershipListener(BeanContextMembershipListener bcml);
/**
* This global lock is used by both <code>BeanContext</code>
* and <code>BeanContextServices</code> implementors
* to serialize changes in a <code>BeanContext</code>
* hierarchy and any service requests etc.
*/
public static final Object globalHierarchyLock = new Object();
}