org.apache.derby.iapi.services.classfile

Class ClassHolder

java.lang.Object

org.apache.derby.iapi.services.classfile.ClassHolder

Direct Known Subclasses:

ClassInvestigator

public class ClassHolder
extends java.lang.Object

Based upon "THE class FILE FORMAT" chapter of "The Java Virtual Machine Specification" corresponding to version 1.0.2 of the Java Virtual Machine and 1.0.2 of the Java Language Specification. ISBN 0-201-63452-X, September 1996.

Constructor Summary

Constructors

Constructor and Description
ClassHolder(java.lang.String fullyQualifiedName, java.lang.String superClassName, int modifiers) This will not define a constructor -- it is up to the caller to add at least one.

Method Summary

Modifier and Type	Method and Description
void	addAttribute(java.lang.String attributeName, ClassFormatOutput info)
int	addClassReference(java.lang.String fullyQualifiedName) Add a class entry to the pool.
int	addConstant(double value)
int	addConstant(float value)
int	addConstant(int value)
int	addConstant(long value)
int	addConstant(java.lang.String value)
int	addFieldReference(ClassMember field)
int	addFieldReference(java.lang.String className, java.lang.String simpleName, java.lang.String descriptor)
ClassMember	addMember(java.lang.String simpleName, java.lang.String descriptor, int modifier)
int	addMethodReference(java.lang.String className, java.lang.String simpleName, java.lang.String descriptor, boolean isInterface)
int	addUtf8(java.lang.String value)
static java.lang.String	convertToInternalClassName(java.lang.String externalName)
static java.lang.String	convertToInternalDescriptor(java.lang.String externalName)
int	findClass(java.lang.String fullyQualifiedName) Find a class descriptor (section 4.4.1) and return its index, returns -1 if not found.
int	findNameAndType(java.lang.String name, java.lang.String descriptor) Find a name and type descriptor (section 4.4.6) and return it's index.
int	getConstantPoolIndex()
ConstantPoolEntry	getEntry(int index)
ByteArray	getFileFormat() Convert the object representation of the class into its class file format.
int	getModifier()
java.lang.String	getName()
java.lang.String	getSuperClassName()
static boolean	isExternalClassName(java.lang.String className)

Methods inherited from class java.lang.Object

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

Constructor Detail

ClassHolder

public ClassHolder(java.lang.String fullyQualifiedName,
                   java.lang.String superClassName,
                   int modifiers)

This will not define a constructor -- it is up to the caller to add at least one.

Method Detail

getFileFormat

public ByteArray getFileFormat()
                        throws java.io.IOException

Convert the object representation of the class into its class file format.

Throws:

java.io.IOException - error writing the class

getModifier

public int getModifier()

See Also:

ClassMember

getName

public java.lang.String getName()

See Also:

ClassMember

addMember

public ClassMember addMember(java.lang.String simpleName,
                             java.lang.String descriptor,
                             int modifier)

See Also:

addMember(java.lang.String, java.lang.String, int)

addFieldReference

public int addFieldReference(java.lang.String className,
                             java.lang.String simpleName,
                             java.lang.String descriptor)

See Also:

addFieldReference(java.lang.String, java.lang.String, java.lang.String)

addFieldReference

public int addFieldReference(ClassMember field)

addMethodReference

public int addMethodReference(java.lang.String className,
                              java.lang.String simpleName,
                              java.lang.String descriptor,
                              boolean isInterface)

See Also:

addMethodReference(java.lang.String, java.lang.String, java.lang.String, boolean)

addConstant

public int addConstant(java.lang.String value)

See Also:

addConstant(java.lang.String)

addUtf8

public int addUtf8(java.lang.String value)

See Also:

addUtf8(java.lang.String)

addConstant

public int addConstant(int value)

See Also:

addConstant(java.lang.String)

addConstant

public int addConstant(float value)

See Also:

addConstant(java.lang.String)

addConstant

public int addConstant(long value)

See Also:

addConstant(java.lang.String)

addConstant

public int addConstant(double value)

See Also:

addConstant(java.lang.String)

getConstantPoolIndex

public int getConstantPoolIndex()

See Also:

ClassMember

addAttribute

public void addAttribute(java.lang.String attributeName,
                         ClassFormatOutput info)

getSuperClassName

public java.lang.String getSuperClassName()

addClassReference

public int addClassReference(java.lang.String fullyQualifiedName)

Add a class entry to the pool.

getEntry

public ConstantPoolEntry getEntry(int index)

findClass

public int findClass(java.lang.String fullyQualifiedName)

Find a class descriptor (section 4.4.1) and return its index, returns -1 if not found.

findNameAndType

public int findNameAndType(java.lang.String name,
                           java.lang.String descriptor)

Find a name and type descriptor (section 4.4.6) and return it's index.

returns -1 if not found.

isExternalClassName

public static boolean isExternalClassName(java.lang.String className)

convertToInternalClassName

public static java.lang.String convertToInternalClassName(java.lang.String externalName)

convertToInternalDescriptor

public static java.lang.String convertToInternalDescriptor(java.lang.String externalName)