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org.eclipse.jdi.internal
Class ObjectReferenceImpl  

java.lang.Object
  org.eclipse.jdi.internal.MirrorImpl
      org.eclipse.jdi.internal.ValueImpl
          org.eclipse.jdi.internal.ObjectReferenceImpl

All Implemented Interfaces:

com.sun.jdi.Mirror, com.sun.jdi.ObjectReference, com.sun.jdi.Value

Direct Known Subclasses:

ArrayReferenceImpl, ClassLoaderReferenceImpl, ClassObjectReferenceImpl, StringReferenceImpl, ThreadGroupReferenceImpl, ThreadReferenceImpl

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public class ObjectReferenceImpl

extends ValueImpl

implements com.sun.jdi.ObjectReference

this class implements the corresponding interfaces declared by the JDI specification. See the com.sun.jdi package for more information.

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Nested Class Summary
private  class	ObjectReferenceImpl.MonitorInfo           Inner class used to return monitor info.

 

Field Summary
private  org.eclipse.jdi.internal.jdwp.JdwpObjectID	fObjectID           ObjectID of object that corresponds to this reference.
private  com.sun.jdi.ReferenceType	fReferenceType           Cached reference type.
static byte	tag           JDWP Tag.

 

Fields inherited from class org.eclipse.jdi.internal.MirrorImpl

fDescription, fVerboseWriter

 

Fields inherited from interface com.sun.jdi.ObjectReference

INVOKE_NONVIRTUAL, INVOKE_SINGLE_THREADED

 

Constructor Summary

ObjectReferenceImpl(java.lang.String description, VirtualMachineImpl vmImpl, org.eclipse.jdi.internal.jdwp.JdwpObjectID objectID)           Creates new ObjectReferenceImpl.

ObjectReferenceImpl(VirtualMachineImpl vmImpl, org.eclipse.jdi.internal.jdwp.JdwpObjectID objectID)           Creates new ObjectReferenceImpl.

 

Method Summary
void	disableCollection()           Prevents garbage collection for this object.
void	enableCollection()           Permits garbage collection for this object.
int	entryCount()
boolean	equals(java.lang.Object object)           Determine whether this Object is semantically equal to another Object.
org.eclipse.jdi.internal.jdwp.JdwpObjectID	getObjectID()
byte	getTag()
com.sun.jdi.Value	getValue(com.sun.jdi.Field field)
java.util.Map	getValues(java.util.List allFields)
int	hashCode()           Get a value that represents this Object, as uniquely as possible within the confines of an int.
java.lang.String	idString()
com.sun.jdi.Value	invokeMethod(com.sun.jdi.ThreadReference thread, com.sun.jdi.Method method, java.util.List arguments, int options)           Invokes the specified static Method in the target VM.
private  boolean	isAValidMethod(com.sun.jdi.Method method)
boolean	isCollected()
private  ObjectReferenceImpl.MonitorInfo	monitorInfo()
private  int	optionsToJdwpOptions(int options)
com.sun.jdi.ThreadReference	owningThread()
static ObjectReferenceImpl	readObjectRefWithoutTag(MirrorImpl target, java.io.DataInputStream in)
static ObjectReferenceImpl	readObjectRefWithTag(MirrorImpl target, java.io.DataInputStream in)
com.sun.jdi.ReferenceType	referenceType()
void	setValue(com.sun.jdi.Field field, com.sun.jdi.Value value)           Sets the value of a given instance or static field in this object.
java.lang.String	toString()           Convert this Object to a human-readable String.
com.sun.jdi.Type	type()
long	uniqueID()
java.util.List	waitingThreads()
void	write(MirrorImpl target, java.io.DataOutputStream out)           Writes JDWP representation without tag.

 

Methods inherited from class org.eclipse.jdi.internal.ValueImpl

checkPrimitiveValue, checkValue, checkValues, readWithoutTag, readWithTag, writeNull, writeNullWithTag, writeWithTag

 

Methods inherited from class org.eclipse.jdi.internal.MirrorImpl

checkVM, defaultIOExceptionHandler, defaultReplyErrorHandler, disconnectVM, getCommandVM, handledJdwpEventSet, handledJdwpRequest, initJdwpEventSet, initJdwpRequest, readBoolean, readByte, readByte, readByte, readByteArray, readChar, readDouble, readFloat, readInt, readInt, readInt, readLong, readShort, readShort, readShort, readString, requestVM, requestVM, requestVM, requestVM, requestVM, verboseWriter, virtualMachine, virtualMachineImpl, writeBoolean, writeByte, writeByte, writeByte, writeChar, writeDouble, writeFloat, writeInt, writeInt, writeInt, writeLong, writeShort, writeShort, writeShort, writeString, writeVerboseCommandPacketHeader

 

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

 

Methods inherited from interface com.sun.jdi.Mirror

virtualMachine

 

Field Detail

tag

public static final byte tag

JDWP Tag.

See Also:

Constant Field Values

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fObjectID

private org.eclipse.jdi.internal.jdwp.JdwpObjectID fObjectID

ObjectID of object that corresponds to this reference.

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fReferenceType

private com.sun.jdi.ReferenceType fReferenceType

Cached reference type. This value is safe for caching because the type of an object never changes.

Constructor Detail

ObjectReferenceImpl

public ObjectReferenceImpl(VirtualMachineImpl vmImpl,
                           org.eclipse.jdi.internal.jdwp.JdwpObjectID objectID)

Creates new ObjectReferenceImpl.

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ObjectReferenceImpl

public ObjectReferenceImpl(java.lang.String description,
                           VirtualMachineImpl vmImpl,
                           org.eclipse.jdi.internal.jdwp.JdwpObjectID objectID)

Creates new ObjectReferenceImpl.

Method Detail

getTag

public byte getTag()

Specified by:

getTag in class ValueImpl

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getObjectID

public org.eclipse.jdi.internal.jdwp.JdwpObjectID getObjectID()

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disableCollection

public void disableCollection()

Prevents garbage collection for this object.

Specified by:

disableCollection in interface com.sun.jdi.ObjectReference

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enableCollection

public void enableCollection()

Permits garbage collection for this object.

Specified by:

enableCollection in interface com.sun.jdi.ObjectReference

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monitorInfo

private ObjectReferenceImpl.MonitorInfo monitorInfo()
                                             throws com.sun.jdi.IncompatibleThreadStateException

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owningThread

public com.sun.jdi.ThreadReference owningThread()
                                         throws com.sun.jdi.IncompatibleThreadStateException

Specified by:

owningThread in interface com.sun.jdi.ObjectReference

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entryCount

public int entryCount()
               throws com.sun.jdi.IncompatibleThreadStateException

Specified by:

entryCount in interface com.sun.jdi.ObjectReference

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waitingThreads

public java.util.List waitingThreads()
                              throws com.sun.jdi.IncompatibleThreadStateException

Specified by:

waitingThreads in interface com.sun.jdi.ObjectReference

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getValue

public com.sun.jdi.Value getValue(com.sun.jdi.Field field)

Specified by:

getValue in interface com.sun.jdi.ObjectReference

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getValues

public java.util.Map getValues(java.util.List allFields)

Specified by:

getValues in interface com.sun.jdi.ObjectReference

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hashCode

public int hashCode()

Description copied from class: java.lang.Object

Get a value that represents this Object, as uniquely as possible within the confines of an int.

There are some requirements on this method which subclasses must follow:

• Semantic equality implies identical hashcodes. In other words, if a.equals(b) is true, then a.hashCode() == b.hashCode() must be as well. However, the reverse is not necessarily true, and two objects may have the same hashcode without being equal.
• It must be consistent. Whichever value o.hashCode() returns on the first invocation must be the value returned on all later invocations as long as the object exists. Notice, however, that the result of hashCode may change between separate executions of a Virtual Machine, because it is not invoked on the same object.

Notice that since hashCode is used in java.util.Hashtable and other hashing classes, a poor implementation will degrade the performance of hashing (so don't blindly implement it as returning a constant!). Also, if calculating the hash is time-consuming, a class may consider caching the results.

The default implementation returns System.identityHashCode(this)

Specified by:

hashCode in interface com.sun.jdi.ObjectReference

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equals

public boolean equals(java.lang.Object object)

Description copied from class: java.lang.Object

Determine whether this Object is semantically equal to another Object.

There are some fairly strict requirements on this method which subclasses must follow:

• It must be transitive. If a.equals(b) and b.equals(c), then a.equals(c) must be true as well.
• It must be symmetric. a.equals(b) and b.equals(a) must have the same value.
• It must be reflexive. a.equals(a) must always be true.
• It must be consistent. Whichever value a.equals(b) returns on the first invocation must be the value returned on all later invocations.
• a.equals(null) must be false.
• It must be consistent with hashCode(). That is, a.equals(b) must imply a.hashCode() == b.hashCode(). The reverse is not true; two objects that are not equal may have the same hashcode, but that has the potential to harm hashing performance.

This is typically overridden to throw a java.lang.ClassCastException if the argument is not comparable to the class performing the comparison, but that is not a requirement. It is legal for a.equals(b) to be true even though a.getClass() != b.getClass(). Also, it is typical to never cause a java.lang.NullPointerException.

In general, the Collections API (java.util) use the equals method rather than the == operator to compare objects. However, java.util.IdentityHashMap is an exception to this rule, for its own good reasons.

The default implementation returns this == o.

Specified by:

equals in interface com.sun.jdi.ObjectReference

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optionsToJdwpOptions

private int optionsToJdwpOptions(int options)

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invokeMethod

public com.sun.jdi.Value invokeMethod(com.sun.jdi.ThreadReference thread,
                                      com.sun.jdi.Method method,
                                      java.util.List arguments,
                                      int options)
                               throws com.sun.jdi.InvalidTypeException,
                                      com.sun.jdi.ClassNotLoadedException,
                                      com.sun.jdi.IncompatibleThreadStateException,
                                      com.sun.jdi.InvocationException

Invokes the specified static Method in the target VM.

Specified by:

invokeMethod in interface com.sun.jdi.ObjectReference

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isAValidMethod

private boolean isAValidMethod(com.sun.jdi.Method method)

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isCollected

public boolean isCollected()

Specified by:

isCollected in interface com.sun.jdi.ObjectReference

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referenceType

public com.sun.jdi.ReferenceType referenceType()

Specified by:

referenceType in interface com.sun.jdi.ObjectReference

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type

public com.sun.jdi.Type type()

Specified by:

type in interface com.sun.jdi.Value

Specified by:

type in class ValueImpl

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setValue

public void setValue(com.sun.jdi.Field field,
                     com.sun.jdi.Value value)
              throws com.sun.jdi.InvalidTypeException,
                     com.sun.jdi.ClassNotLoadedException

Sets the value of a given instance or static field in this object.

Specified by:

setValue in interface com.sun.jdi.ObjectReference

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uniqueID

public long uniqueID()

Specified by:

uniqueID in interface com.sun.jdi.ObjectReference

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idString

public java.lang.String idString()

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toString

public java.lang.String toString()

Description copied from class: java.lang.Object

Convert this Object to a human-readable String. There are no limits placed on how long this String should be or what it should contain. We suggest you make it as intuitive as possible to be able to place it into System.out.println() 55 and such.

It is typical, but not required, to ensure that this method never completes abruptly with a java.lang.RuntimeException.

This method will be called when performing string concatenation with this object. If the result is null, string concatenation will instead use "null".

The default implementation returns getClass().getName() + "@" + Integer.toHexString(hashCode()).

Specified by:

toString in interface com.sun.jdi.Mirror

Overrides:

toString in class MirrorImpl

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readObjectRefWithoutTag

public static ObjectReferenceImpl readObjectRefWithoutTag(MirrorImpl target,
                                                          java.io.DataInputStream in)
                                                   throws java.io.IOException

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readObjectRefWithTag

public static ObjectReferenceImpl readObjectRefWithTag(MirrorImpl target,
                                                       java.io.DataInputStream in)
                                                throws java.io.IOException

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write

public void write(MirrorImpl target,
                  java.io.DataOutputStream out)
           throws java.io.IOException

Writes JDWP representation without tag.

Specified by:

write in class ValueImpl

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Overview  Package   Class  Use  Deprecated  Index
Home >> All >> org >> eclipse >> jdi >> [ internal overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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