View.java

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package org.glassfish.contextpropagation;

import java.util.EnumSet;

/**
 * A View provides access to a subset of contexts that share a common prefix
 * that is the key for a ViewCapable instance.
 * View is used by Implementors of ViewCapable.
 */
public interface View {
  /**
   * 
   * @param name The name of the context sought.
   * @return The context associated to the specified name.
   * @throws InsufficientCredentialException If the user has insufficient 
   * privileges to access that context.
   */
  <T> T get(String name);

  /**
   * Stores the specified context under the specified name into the in-scope ContextMap.
   * @param name The name to associate to the specified context
   * @param context a String context.
   * @param propagationModes A set of propagation modes that control over 
   * which protocol this context will be propagated.
   * @return The context being replaced.
   * @throws InsufficientCredentialException If the user has insufficient 
   * privileges to access that context.
   */
  <T> T put(String name, String context, EnumSet<PropagationMode> propagationModes);

  /**
   * Stores the specified context under the specified name into the in-scope ContextMap.
   * @param name The name to associate to the specified context
   * @param context a Number context.
   * @param propagationModes A set of propagation modes that control over 
   * which protocol this context will be propagated.
   * @return The context being replaced.
   * @throws InsufficientCredentialException If the user has insufficient 
   * privileges to access that context.
   */
  <T, U extends Number> T put(String name, U context, EnumSet<PropagationMode> propagationModes);

  /**
   * Stores the specified context under the specified name into the in-scope ContextMap.
   * @param name The name to associate to the specified context
   * @param context an boolean String context.
   * @param propagationModes A set of propagation modes that control over 
   * which protocol this context will be propagated.
   * @return The context being replaced.
   * @throws InsufficientCredentialException If the user has insufficient 
   * privileges to access that context.
   */  
  <T> T put(String name, Boolean context, EnumSet<PropagationMode> propagationModes);

  /**
   * Stores the specified context under the specified name into the in-scope ContextMap.
   * @param name The name to associate to the specified context
   * @param context an char String context.
   * @param propagationModes A set of propagation modes that control over 
   * which protocol this context will be propagated.
   * @return The context being replaced.
   * @throws InsufficientCredentialException If the user has insufficient 
   * privileges to access that context.
   */  
  <T> T put(String name, Character context, EnumSet<PropagationMode> propagationModes);

   /**
    * Removes the specified context under the specified name from the in-scope ContextMap.
    * @param name The name to associate to the specified context
    * @return The context being replaced.
    * @throws InsufficientCredentialException If the user has insufficient 
    * privileges to access that context.
    */
   <T> T remove(String name);
}