Java example source code file (ClassPrepareRequest.java)

This example Java source code file (ClassPrepareRequest.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

classpreparerequest, eventrequest, jdi

The ClassPrepareRequest.java Java example source code

/*
 * 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
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package com.sun.jdi.request;

import com.sun.jdi.*;

/**
 * Request for notification when a class is prepared in the target VM.
 * When an enabled ClassPrepareRequest is satisfied, an
 * {@link com.sun.jdi.event.EventSet event set} containing a
 * {@link com.sun.jdi.event.ClassPrepareEvent ClassPrepareEvent}
 * will be placed on the
 * {@link com.sun.jdi.event.EventQueue EventQueue}.
 * The collection of existing ClassPrepareRequests is
 * managed by the {@link EventRequestManager}
 * <p>
 * Class preparation is defined in the Java Virtual Machine
 * Specification.
 *
 * @see com.sun.jdi.event.ClassPrepareEvent
 * @see com.sun.jdi.event.EventQueue
 * @see EventRequestManager
 *
 * @author Robert Field
 * @since  1.3
 */
@jdk.Exported
public interface ClassPrepareRequest extends EventRequest {

    /**
     * Restricts the events generated by this request to be the
     * preparation of the given reference type and any subtypes.
     * An event will be generated for any prepared 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 the
     * preparation of reference types 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 the
     * preparation of reference types whose name does <b>not match
     * 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 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 the
     * preparation of reference types for which the restricted regular
     * expression 'sourceNamePattern' matches one of the 'sourceNames' for
     * the reference type being prepared.
     * That is, if refType is the ReferenceType being prepared,
     * then there exists at least one stratum, call it 'someStratum'
     * on the list returned by
     *     refType.availableStrata();
     *
     * such that a name on the list returned by
     *     refType.sourceNames(someStratam)
     *
     * matches 'sourceNamePattern'.
     * Regular expressions are limited
     * to exact matches and patterns that begin with '*' or end with '*';
     * for example, "*.Foo" or "java.*".
     * <P>
     * Not all targets support this operation.
     * Use {@link VirtualMachine#canUseSourceNameFilters()}
     * to determine if the operation is supported.
     * @since 1.6
     * @param sourceNamePattern the pattern string to filter for.
     * @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 addSourceNameFilter(String sourceNamePattern);
}