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package com.sun.jdi.request;

import com.sun.jdi.ObjectReference;
import com.sun.jdi.ReferenceType;
import com.sun.jdi.ThreadReference;
import com.sun.jdi.VirtualMachine;
import com.sun.jdi.event.EventQueue;
import com.sun.jdi.event.EventSet;
import com.sun.jdi.event.ExceptionEvent;


Request for notification when an exception occurs in the target VM. When an enabled ExceptionRequest is satisfied, an event set containing an ExceptionEvent will be placed on the EventQueue. The collection of existing ExceptionRequests is managed by the EventRequestManager 
Author:Robert Field
See Also:
Since: 1.3
/**
 * Request for notification when an exception occurs in the target VM.
 * When an enabled ExceptionRequest is satisfied, an
 * {@link EventSet event set} containing an
 * {@link ExceptionEvent ExceptionEvent} will be placed
 * on the {@link EventQueue EventQueue}.
 * The collection of existing ExceptionRequests is
 * managed by the {@link EventRequestManager}
 *
 * @see ExceptionEvent
 * @see EventQueue
 * @see EventRequestManager
 *
 * @author Robert Field
 * @since  1.3
 */
public interface ExceptionRequest extends EventRequest {

    
Returns exception type for which exception events are requested.

Returns: The exception (and its subclasses) requested with EventRequestManager.createExceptionRequest, or null if, as by default, all exceptions are requested.
/**
     * Returns exception type for which exception events are requested.
     * @return
     * The exception (and its subclasses) requested
     * with {@link EventRequestManager#createExceptionRequest}, or
     * null if, as by default, all exceptions are requested.
     */
    ReferenceType exception();

    
Returns whether caught exceptions of the requested type
will generate events when they are thrown.

 Note that at the time an exception is thrown, it is not always possible to determine whether it is truly caught. See ExceptionEvent.catchLocation for details. 
Returns:
boolean true if caught exceptions will be reported, false
otherwise.
/**
     * Returns whether caught exceptions of the requested type
     * will generate events when they are thrown.
     * <p>
     * Note that at the time an exception is thrown, it is not always
     * possible to determine whether it is truly caught. See
     * {@link ExceptionEvent#catchLocation} for
     * details.
     * @return
     * boolean true if caught exceptions will be reported, false
     * otherwise.
     */
    boolean notifyCaught();

    
Returns whether uncaught exceptions of the requested type
will generate events when they are thrown.

 Note that at the time an exception is thrown, it is not always possible to determine whether it is truly uncaught. See ExceptionEvent.catchLocation for details. 
Returns:
boolean true if caught exceptions will be reported, false
otherwise.
/**
     * Returns whether uncaught exceptions of the requested type
     * will generate events when they are thrown.
     * <p>
     * Note that at the time an exception is thrown, it is not always
     * possible to determine whether it is truly uncaught. See
     * {@link ExceptionEvent#catchLocation} for
     * details.
     * @return
     * boolean true if caught exceptions will be reported, false
     * otherwise.
     */
    boolean notifyUncaught();

    
Restricts the events generated by this request to those in
the given thread.

Params:
  • thread – the thread to filter on.
Throws:
/**
     * Restricts the events generated by this request to those in
     * the given thread.
     * @param thread the thread to filter on.
     * @throws InvalidRequestStateException if this request is currently
     * enabled or has been deleted.
     * Filters may be added only to disabled requests.
     */
    void addThreadFilter(ThreadReference thread);

    
Restricts the events generated by this request to those whose
location is in the given reference type or any of its subtypes.
An event will be generated for any location in a reference type
that can be safely cast to the given reference type.

Params:
  • refType – the reference type to filter on.
Throws:
/**
     * Restricts the events generated by this request to those whose
     * location is in the given reference type or any of its subtypes.
     * An event will be generated for any location in a reference type
     * that can be safely cast to the given reference type.
     *
     * @param refType the reference type to filter on.
     * @throws InvalidRequestStateException if this request is currently
     * enabled or has been deleted.
     * Filters may be added only to disabled requests.
     */
    void addClassFilter(ReferenceType refType);

    
Restricts the events generated by this request to those
whose location is in a class whose name matches a restricted
regular expression. Regular expressions are limited
to exact matches and patterns that begin with '*' or end with '*';
for example, "*.Foo" or "java.*".

Params:
  • classPattern – the pattern String to filter for.
Throws:
/**
     * Restricts the events generated by this request to those
     * whose location is in a class whose name matches a restricted
     * regular expression. Regular expressions are limited
     * to exact matches and patterns that begin with '*' or end with '*';
     * for example, "*.Foo" or "java.*".
     *
     * @param classPattern the pattern String to filter for.
     * @throws InvalidRequestStateException if this request is currently
     * enabled or has been deleted.
     * Filters may be added only to disabled requests.
     */
    void addClassFilter(String classPattern);

    
Restricts the events generated by this request to those
whose location is in a class whose name does not match a
restricted regular expression. Regular expressions are limited
to exact matches and patterns that begin with '*' or end with '*';
for example, "*.Foo" or "java.*".

Params:
  • classPattern – the pattern String to filter against.
Throws:
/**
     * Restricts the events generated by this request to those
     * whose location is in a class whose name does <b>not</b> match a
     * restricted regular expression. Regular expressions are limited
     * to exact matches and patterns that begin with '*' or end with '*';
     * for example, "*.Foo" or "java.*".
     *
     * @param classPattern the pattern String to filter against.
     * @throws InvalidRequestStateException if this request is currently
     * enabled or has been deleted.
     * Filters may be added only to disabled requests.
     */
    void addClassExclusionFilter(String classPattern);

    
Restricts the events generated by this request to those in
which the currently executing instance ("this") is the object
specified.

 Not all targets support this operation. Use VirtualMachine.canUseInstanceFilters() to determine if the operation is supported. 
Params:
  • instance – the object which must be the current instance
in order to pass this filter.
Throws:
Since:1.4
/**
     * Restricts the events generated by this request to those in
     * which the currently executing instance ("this") is the object
     * specified.
     * <P>
     * Not all targets support this operation.
     * Use {@link VirtualMachine#canUseInstanceFilters()}
     * to determine if the operation is supported.
     * @since 1.4
     * @param instance the object which must be the current instance
     * in order to pass this filter.
     * @throws java.lang.UnsupportedOperationException if
     * the target virtual machine does not support this
     * operation.
     * @throws InvalidRequestStateException if this request is currently
     * enabled or has been deleted.
     * Filters may be added only to disabled requests.
     */
    void addInstanceFilter(ObjectReference instance);
}