/*

 * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

package com.sun.jdi.request;

import com.sun.jdi.*;

/**

 * Request for notification when a method is invoked in the target VM.

 * When an enabled MethodEntryRequest is satisfied, an

 * {@link com.sun.jdi.event.EventSet event set} containing a

 * {@link com.sun.jdi.event.MethodEntryEvent MethodEntryEvent}

 * will be placed on the

 * {@link com.sun.jdi.event.EventQueue EventQueue}.

 * The collection of existing MethodEntryRequests is

 * managed by the {@link EventRequestManager}

 *

 * @see com.sun.jdi.event.MethodEntryEvent

 * @see com.sun.jdi.event.EventQueue

 * @see EventRequestManager

 *

 * @author Robert Field

 * @since  1.3

 */

@jdk.Exported

public interface MethodEntryRequest extends EventRequest {

    /**

     * 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

     * method 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 method is in a class whose name matches this 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 method is in a class whose name does <b>not</b> match this restricted

     * regular expression, e.g. "java.*" or "*.Foo".

     * @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.

     * <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);

}