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25 
26 package com.sun.jdi.request;
27 
28 import com.sun.jdi.*;
29 
30 /**
31  * Request for notification when a method is invoked in the target VM.
32  * When an enabled MethodEntryRequest is satisfied, an
33  * {@link com.sun.jdi.event.EventSet event set} containing a
34  * {@link com.sun.jdi.event.MethodEntryEvent MethodEntryEvent}
35  * will be placed on the
36  * {@link com.sun.jdi.event.EventQueue EventQueue}.
37  * The collection of existing MethodEntryRequests is
38  * managed by the {@link EventRequestManager}
39  *
40  * @see com.sun.jdi.event.MethodEntryEvent
41  * @see com.sun.jdi.event.EventQueue
42  * @see EventRequestManager
43  *
44  * @author Robert Field
45  * @since  1.3
46  */
47 @jdk.Exported
48 public interface MethodEntryRequest extends EventRequest {
49 
50     /**
51      * Restricts the events generated by this request to those in
52      * the given thread.
53      * @param thread the thread to filter on.
54      * @throws InvalidRequestStateException if this request is currently
55      * enabled or has been deleted.
56      * Filters may be added only to disabled requests.
57      */
addThreadFilter(ThreadReference thread)58     void addThreadFilter(ThreadReference thread);
59 
60     /**
61      * Restricts the events generated by this request to those whose
62      * method is in the given reference type or any of its subtypes.
63      * An event will be generated for any location in a reference type
64      * that can be safely cast to the given reference type.
65      *
66      * @param refType the reference type to filter on.
67      * @throws InvalidRequestStateException if this request is currently
68      * enabled or has been deleted.
69      * Filters may be added only to disabled requests.
70      */
addClassFilter(ReferenceType refType)71     void addClassFilter(ReferenceType refType);
72 
73     /**
74      * Restricts the events generated by this request to those
75      * whose method is in a class whose name matches this restricted
76      * regular expression. Regular expressions are limited
77      * to exact matches and patterns that begin with '*' or end with '*';
78      * for example, "*.Foo" or "java.*".
79      *
80      * @param classPattern the pattern String to filter for.
81      * @throws InvalidRequestStateException if this request is currently
82      * enabled or has been deleted.
83      * Filters may be added only to disabled requests.
84      */
addClassFilter(String classPattern)85     void addClassFilter(String classPattern);
86 
87     /**
88      * Restricts the events generated by this request to those
89      * whose method is in a class whose name does <b>not</b> match this restricted
90      * regular expression, e.g. "java.*" or "*.Foo".
91      * @param classPattern the pattern String to filter against.
92      * @throws InvalidRequestStateException if this request is currently
93      * enabled or has been deleted.
94      * Filters may be added only to disabled requests.
95      */
addClassExclusionFilter(String classPattern)96     void addClassExclusionFilter(String classPattern);
97 
98     /**
99      * Restricts the events generated by this request to those in
100      * which the currently executing instance ("this") is the object
101      * specified.
102      * <P>
103      * Not all targets support this operation.
104      * Use {@link VirtualMachine#canUseInstanceFilters()}
105      * to determine if the operation is supported.
106      * @since 1.4
107      * @param instance the object which must be the current instance
108      * in order to pass this filter.
109      * @throws java.lang.UnsupportedOperationException if
110      * the target virtual machine does not support this
111      * operation.
112      * @throws InvalidRequestStateException if this request is currently
113      * enabled or has been deleted.
114      * Filters may be added only to disabled requests.
115      */
addInstanceFilter(ObjectReference instance)116     void addInstanceFilter(ObjectReference instance);
117 }
118