FaceletCache.java

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package com.sun.faces.facelets;

import java.io.IOException;

import java.net.URL;

@Deprecated
public abstract class FaceletCache<V> {
    
    /**
     * Factory interface for creating Facelets.
     */
    @Deprecated
    public interface InstanceFactory<V> {
        public V newInstance(final URL key) throws IOException;
    }
    
    /**
     * Retrieves a cached Facelet
     * @param url URL for the Facelet being retrieved
     * @return cached Facelet instance, If no instance is available,
     * it will be created using the Facelet InstanceFactory and stored in the cache
     */
    public abstract V getFacelet(URL url) throws IOException;

    /**
     * Determines whether a cached Facelet instance exists for this URL
     * @param url URL for the Facelet
     * @return true if a cached instance exists, false otherwise
     */
    public abstract boolean isFaceletCached(URL url);

    /**
     * Retrieves a cached Metadata Facelet
     * @param url URL for the Metadata Facelet being retrieved
     * @return cached Metadata Facelet instance, If no instance is available,
     * it will be created using the Metadata Facelet InstanceFactory and stored in the cache
     */
    public abstract V getMetadataFacelet(URL url) throws IOException;

    /**
     * Determines whether a cached Metadata Facelet instance exists for this URL
     * @param url URL for the Metadata Facelet
     * @return true if a cached instance exists, false otherwise
     */
    public abstract boolean isMetadataFaceletCached(URL url);
    
    /**
     * Initializes this cache instance.
     * @param faceletFactory <code>InstanceFactory</code> for creating Facelet instances
     * @param metafaceletFactory <code>InstanceFactory</code> for creating Metadata Facelet instances
     */
    public final void init(InstanceFactory<V> faceletFactory, InstanceFactory<V> metafaceletFactory) {
        _faceletFactory = faceletFactory;
        _metafaceletFactory = metafaceletFactory;
    }
    
    /**
     * Retrieves InstanceFactory for creating Facelets
     * @return factory for creating Facelets
     */
    protected final InstanceFactory<V> getFaceletInstanceFactory() {
        return _faceletFactory;
    }
    
    /**
     * Retrieves InstanceFactory for creating Metadata Facelets
     * @return factory for creating MetadataFacelets
     */
    protected final InstanceFactory<V> getMetadataFaceletInstanceFactory() {
        return _metafaceletFactory;
    }

    private InstanceFactory<V> _faceletFactory;
    private InstanceFactory<V> _metafaceletFactory;
}