Class DTFJJavaFieldInstance

java.lang.Object

com.ibm.j9ddr.vm29.view.dtfj.java.DTFJJavaField

com.ibm.j9ddr.vm29.view.dtfj.java.DTFJJavaFieldInstance

All Implemented Interfaces:

JavaField, JavaMember, IDTFJJavaField

public class DTFJJavaFieldInstance
extends DTFJJavaField

Field Summary

Fields declared in class DTFJJavaField

allowlist, clazz, FIELD_ARRAY, FIELD_BOOLEAN, FIELD_BYTE, FIELD_CHAR, FIELD_DOUBLE, FIELD_FLOAT, FIELD_INTEGER, FIELD_LONG, FIELD_OBJECT, FIELD_SHORT, fieldOffset, j9field, modifiers, name

Modifier and Type	Field	Description
protected static final Class<?>[]	allowlist
protected DTFJJavaClass	clazz
protected static final int	FIELD_ARRAY
protected static final int	FIELD_BOOLEAN
protected static final int	FIELD_BYTE
protected static final int	FIELD_CHAR
protected static final int	FIELD_DOUBLE
protected static final int	FIELD_FLOAT
protected static final int	FIELD_INTEGER
protected static final int	FIELD_LONG
protected static final int	FIELD_OBJECT
protected static final int	FIELD_SHORT
protected final J9ObjectFieldOffset	fieldOffset
protected final com.ibm.j9ddr.vm29.pointer.generated.J9ROMFieldShapePointer	j9field
protected int	modifiers
protected final String	name

Constructor Summary

Constructors

Constructor	Description
DTFJJavaFieldInstance(DTFJJavaClass clazz, J9ObjectFieldOffset ptr)

Method Summary

Modifier and Type	Method	Description
Object	get(JavaObject object)	Get the contents of an Object field.
boolean	getBoolean(JavaObject object)	Get the contents of a boolean field.
byte	getByte(JavaObject object)	Get the contents of a byte field.
char	getChar(JavaObject object)	Get the contents of a char field.
double	getDouble(JavaObject object)	Get the contents of a double field.
float	getFloat(JavaObject object)	Get the contents of a float field.
int	getInt(JavaObject object)	Get the contents of an int field.
long	getLong(JavaObject object)	Get the contents of a long field.
int	getPackedLengthAnnotationValue()
short	getShort(JavaObject object)	Get the contents of a short field.
String	getString(JavaObject object)	Get the contents of a string field.
boolean	isNestedPacked()
boolean	isNestedPackedArray()

Methods declared in class DTFJJavaField

checkDataTypeConversion, equals, getDeclaringClass, getModifiers, getName, getSigFlag, getSignature, hashCode, isAncestorOf, validateJavaObject

Modifier and Type	Method	Description
protected long	checkDataTypeConversion(DTFJJavaObject object, int mask)
boolean	equals(Object obj)	Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison.
JavaClass	getDeclaringClass()	Get the class which declares this field or method
int	getModifiers()	Get the set of modifiers for this field or method - a set of bits
String	getName()	Get the name of the field or method
protected char	getSigFlag()
String	getSignature()	Get the signature of the field or method
int	hashCode()	Answers an integer hash code for the receiver.
protected boolean	isAncestorOf(JavaClass theClass)	Function to check that the supplied class is an ancestor of this one
protected DTFJJavaObject	validateJavaObject(JavaObject object)

Methods declared in class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

DTFJJavaFieldInstance

public DTFJJavaFieldInstance(DTFJJavaClass clazz,
 J9ObjectFieldOffset ptr)
                      throws CorruptDataException

Throws:

CorruptDataException

Method Details

get

public Object get(JavaObject object)
           throws CorruptDataException,
MemoryAccessException

Description copied from interface: JavaField

Get the contents of an Object field.

Parameters:

object - to fetch the field from. Ignored for static fields.

Returns:

a JavaObject instance for reference type fields, an instance of a subclass of Number, Boolean, or Character for primitive fields, or null for null reference fields This field must be declared in the object's class or in a superclass.

Throws:

CorruptDataException

MemoryAccessException

See Also:

• JavaObject
• Byte
• Double
• Float
• Integer
• Long
• Short
• Character
• Boolean

getBoolean

public boolean getBoolean(JavaObject object)
                   throws CorruptDataException,
MemoryAccessException

Description copied from interface: JavaField

Get the contents of a boolean field.

Parameters:

object - to fetch the field from. Ignored for static fields.

Returns:

the field contents

Throws:

CorruptDataException

MemoryAccessException

getByte

public byte getByte(JavaObject object)
             throws CorruptDataException,
MemoryAccessException

Description copied from interface: JavaField

Get the contents of a byte field.

Parameters:

object - to fetch the field from. Ignored for static fields

Returns:

the field contents

Throws:

CorruptDataException

MemoryAccessException

getChar

public char getChar(JavaObject object)
             throws CorruptDataException,
MemoryAccessException

Description copied from interface: JavaField

Get the contents of a char field.

Parameters:

object - to fetch the field from. Ignored for static fields.

Returns:

the field contents

Throws:

CorruptDataException

MemoryAccessException

getDouble

public double getDouble(JavaObject object)
                 throws CorruptDataException,
MemoryAccessException

Description copied from interface: JavaField

Get the contents of a double field.

Parameters:

object - to fetch the field from. Ignored for static fields.

Returns:

the field contents

Throws:

CorruptDataException

MemoryAccessException

getFloat

public float getFloat(JavaObject object)
               throws CorruptDataException,
MemoryAccessException

Description copied from interface: JavaField

Get the contents of a float field.

Parameters:

object - to fetch the field from. Ignored for static fields.

Returns:

the field contents

Throws:

CorruptDataException

MemoryAccessException

getInt

public int getInt(JavaObject object)
           throws CorruptDataException,
MemoryAccessException

Description copied from interface: JavaField

Get the contents of an int field.

Parameters:

object - to fetch the field from. Ignored for static fields.

Returns:

the field contents

Throws:

CorruptDataException

MemoryAccessException

getLong

public long getLong(JavaObject object)
             throws CorruptDataException,
MemoryAccessException

Description copied from interface: JavaField

Get the contents of a long field.

Parameters:

object - to fetch the field from. Ignored for static fields.

Returns:

the field contents

Throws:

CorruptDataException

MemoryAccessException

getShort

public short getShort(JavaObject object)
               throws CorruptDataException,
MemoryAccessException

Description copied from interface: JavaField

Get the contents of a short field.

Parameters:

object - to fetch the field from. Ignored for static fields.

Returns:

the field contents

Throws:

CorruptDataException

MemoryAccessException

getString

public String getString(JavaObject object)
                 throws CorruptDataException,
MemoryAccessException

Description copied from interface: JavaField

Get the contents of a string field.

Parameters:

object - to fetch the field from. Ignored for static fields.

Returns:

a String representing the value of the String field. Note that the instance returned can be null if the field was null in object.

Throws:

CorruptDataException

MemoryAccessException

isNestedPacked

public boolean isNestedPacked()

isNestedPackedArray

public boolean isNestedPackedArray()

getPackedLengthAnnotationValue

public int getPackedLengthAnnotationValue()