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| 1 | +/* | |
| 2 | + * Copyright (c) 1998, 2004, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 | + * | |
| 5 | + * This code is free software; you can redistribute it and/or modify it | |
| 6 | + * under the terms of the GNU General Public License version 2 only, as | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | +package com.sun.jdi; | |
| 27 | + | |
| 28 | +import java.util.List; | |
| 29 | + | |
| 30 | +/** | |
| 31 | + * A class loader object from the target VM. | |
| 32 | + * A ClassLoaderReference is an {@link ObjectReference} with additional | |
| 33 | + * access to classloader-specific information from the target VM. Instances | |
| 34 | + * ClassLoaderReference are obtained through calls to | |
| 35 | + * {@link ReferenceType#classLoader} | |
| 36 | + * | |
| 37 | + * @see ObjectReference | |
| 38 | + * | |
| 39 | + * @author Gordon Hirsch | |
| 40 | + * @since 1.3 | |
| 41 | + */ | |
| 42 | +public interface ClassLoaderReference extends ObjectReference { | |
| 43 | + | |
| 44 | + /** | |
| 45 | + * Returns a list of all loaded classes that were defined by this | |
| 46 | + * class loader. No ordering of this list guaranteed. | |
| 47 | + * <P> | |
| 48 | + * The returned list will include reference types | |
| 49 | + * loaded at least to the point of preparation and | |
| 50 | + * types (like array) for which preparation is | |
| 51 | + * not defined. | |
| 52 | + * | |
| 53 | + * @return a List of {@link ReferenceType} objects mirroring types | |
| 54 | + * loaded by this class loader. The list has length 0 if no types | |
| 55 | + * have been defined by this classloader. | |
| 56 | + */ | |
| 57 | + List<ReferenceType> definedClasses(); | |
| 58 | + | |
| 59 | + /** | |
| 60 | + * Returns a list of all classes for which this class loader has | |
| 61 | + * been recorded as the initiating loader in the target VM. | |
| 62 | + * The list contains ReferenceTypes defined directly by this loader | |
| 63 | + * (as returned by {@link #definedClasses}) and any types for which | |
| 64 | + * loading was delegated by this class loader to another class loader. | |
| 65 | + * <p> | |
| 66 | + * The visible class list has useful properties with respect to | |
| 67 | + * the type namespace. A particular type name will occur at most | |
| 68 | + * once in the list. Each field or variable declared with that | |
| 69 | + * type name in a class defined by | |
| 70 | + * this class loader must be resolved to that single type. | |
| 71 | + * <p> | |
| 72 | + * No ordering of the returned list is guaranteed. | |
| 73 | + * <p> | |
| 74 | + * See | |
| 75 | + * <cite>The Java™ Virtual Machine Specification</cite>, | |
| 76 | + * section 5.3 - Creation and Loading | |
| 77 | + * for more information on the initiating classloader. | |
| 78 | + * <p> | |
| 79 | + * Note that unlike {@link #definedClasses()} | |
| 80 | + * and {@link VirtualMachine#allClasses()}, | |
| 81 | + * some of the returned reference types may not be prepared. | |
| 82 | + * Attempts to perform some operations on unprepared reference types | |
| 83 | + * (e.g. {@link ReferenceType#fields() fields()}) will throw | |
| 84 | + * a {@link ClassNotPreparedException}. | |
| 85 | + * Use {@link ReferenceType#isPrepared()} to determine if | |
| 86 | + * a reference type is prepared. | |
| 87 | + * | |
| 88 | + * @return a List of {@link ReferenceType} objects mirroring classes | |
| 89 | + * initiated by this class loader. The list has length 0 if no classes | |
| 90 | + * are visible to this classloader. | |
| 91 | + */ | |
| 92 | + List<ReferenceType> visibleClasses(); | |
| 93 | +} | |