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package org.glassfish.api.invocation;

import static org.glassfish.api.invocation.ComponentInvocation.ComponentInvocationType;
import org.jvnet.hk2.annotations.Contract;

/**
 *
 * ComponentInvocationHandler handles pre and post activities for a particular
 *  type of ComponentInvocation
 *
 * @author Mahesh Kannan
 *
 */
@Contract
public interface ComponentInvocationHandler {

    /**
     * Called <b>before</b> the curInv is pushed into the invocation stack.
     *
     * @param invType
     * @param prevInv
     * @param newInv
     * @throws InvocationException
     */
    public void beforePreInvoke(ComponentInvocationType invType,
                          ComponentInvocation prevInv, ComponentInvocation newInv)
        throws InvocationException;

    /**
     * Called <b>after</b> the curInv has been pushed into the invocation stack.
     *
     * @param invType
     * @param prevInv
     * @param curInv
     * @throws InvocationException
     */
    public void afterPreInvoke(ComponentInvocationType invType,
                          ComponentInvocation prevInv, ComponentInvocation curInv)
        throws InvocationException;

    /**
     * Called <b>before</b> the curInv has been popped from the invocation stack.
     *
     * @param invType
     * @param prevInv
     * @param curInv
     * @throws InvocationException
     */
    public void beforePostInvoke(ComponentInvocationType invType,
            ComponentInvocation prevInv, ComponentInvocation curInv)
        throws InvocationException;

    /**
     * Called <b>after</b> the curInv has been popped from the invocation stack.
     *
     * @param invType
     * @param prevInv
     * @param curInv
     * @throws InvocationException
     */
    public void afterPostInvoke(ComponentInvocationType invType,
            ComponentInvocation prevInv, ComponentInvocation curInv)
        throws InvocationException;

}