Interface ClassPrepareRequest

All Superinterfaces:

EventRequest, Mirror

public interface ClassPrepareRequest
extends EventRequest

Request for notification when a class is prepared in the target VM. When an enabled ClassPrepareRequest is satisfied, an event set containing a ClassPrepareEvent will be placed on the EventQueue. The collection of existing ClassPrepareRequests is managed by the EventRequestManager

Class preparation is defined in the Java Virtual Machine Specification.

Since:

1.3

See Also:

• ClassPrepareEvent
• EventQueue
• EventRequestManager

Field Summary

Fields declared in interface EventRequest

SUSPEND_ALL, SUSPEND_EVENT_THREAD, SUSPEND_NONE

Modifier and Type	Field	Description
static final int	SUSPEND_ALL	Suspend all threads when the event occurs
static final int	SUSPEND_EVENT_THREAD	Suspend only the thread which generated the event when the event occurs
static final int	SUSPEND_NONE	Suspend no threads when the event occurs

Method Summary

Modifier and Type	Method	Description
void	addClassExclusionFilter(String classPattern)	Restricts the events generated by this request to the preparation of reference types whose name does not match this restricted regular expression.
void	addClassFilter(ReferenceType refType)	Restricts the events generated by this request to be the preparation of the given reference type and any subtypes.
void	addClassFilter(String classPattern)	Restricts the events generated by this request to the preparation of reference types whose name matches this restricted regular expression.
void	addSourceNameFilter(String sourceNamePattern)	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.

Methods declared in interface EventRequest

addCountFilter, disable, enable, getProperty, isEnabled, putProperty, setEnabled, setSuspendPolicy, suspendPolicy

Modifier and Type	Method	Description
void	addCountFilter(int count)	Limit the requested event to be reported at most once after a given number of occurrences.
void	disable()	Same as setEnabled(false).
void	enable()	Same as setEnabled(true).
Object	getProperty(Object key)	Returns the value of the property with the specified key.
boolean	isEnabled()	Determines if this event request is currently enabled.
void	putProperty(Object key, Object value)	Add an arbitrary key/value "property" to this request.
void	setEnabled(boolean val)	Enables or disables this event request.
void	setSuspendPolicy(int policy)	Determines the threads to suspend when the requested event occurs in the target VM.
int	suspendPolicy()	Returns a value which describes the threads to suspend when the requested event occurs in the target VM.

Methods declared in interface Mirror

toString, virtualMachine

Modifier and Type	Method	Description
String	toString()	Returns a String describing this mirror
VirtualMachine	virtualMachine()	Gets the VirtualMachine to which this Mirror belongs.

Method Details

addClassFilter

void addClassFilter(ReferenceType refType)

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.

Parameters:

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.

addClassFilter

void addClassFilter(String classPattern)

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.*".

Parameters:

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.

addClassExclusionFilter

void addClassExclusionFilter(String classPattern)

Restricts the events generated by this request to the preparation of reference types whose name does 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.*".

Parameters:

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.

addSourceNameFilter

void addSourceNameFilter(String sourceNamePattern)

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.*".

Not all targets support this operation. Use VirtualMachine.canUseSourceNameFilters() to determine if the operation is supported.

Parameters:

sourceNamePattern - the pattern string to filter for.

Throws:

UnsupportedOperationException - if the target virtual machine does not support this operation.

InvalidRequestStateException - if this request is currently enabled or has been deleted. Filters may be added only to disabled requests.

Since:

1.6