com.sun.enterprise.deployment.annotation.introspection

Class ClassFile

java.lang.Object

com.sun.enterprise.deployment.annotation.introspection.ClassFile

public class ClassFile
extends Object

This class is encapsulating binary .class file information as defined at http://java.sun.com/docs/books/vmspec/2nd-edition/html/ClassFile.doc.html This is used by the annotation frameworks to quickly scan .class files for the presence of annotations. This avoid the annotation framework having to load each .class file in the class loader. The bytecode to be scanned could come from either a File (which lends itself easily to a channel) or from a JAR (which works better with a byte array). So we provide two variants of the containsAnnotation method, one for each.

Author:

Jerome Dochez

Field Summary

Fields

Modifier and Type	Field and Description
static int	ACC_ABSTRACT
static int	ACC_FINAL
static int	ACC_INTERFACE
static int	ACC_NATIVE
static int	ACC_PRIVATE
static int	ACC_PROTECTED
static int	ACC_PUBLIC
static int	ACC_STATIC
static int	ACC_SYNCHRONIZED
static int	ACC_THREADSAFE
static int	ACC_TRANSIENT
short	accessFlags
ConstantPoolInfo[]	constantPool
ConstantPoolInfo[]	interfaces
ConstantPoolInfo	superClass
ConstantPoolInfo	thisClass

Constructor Summary

Constructors

Constructor and Description
ClassFile(ConstantPoolInfo poolInfo) Creates a new instance of ClassFile

Method Summary

Modifier and Type	Method and Description
boolean	containsAnnotation(byte[] bytecode) Read the input channel and initialize instance data structure.
boolean	containsAnnotation(ReadableByteChannel in, long size) Read the input channel and initialize instance data structure.

Methods inherited from class java.lang.Object

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

Field Detail

constantPool

public ConstantPoolInfo[] constantPool

accessFlags

public short accessFlags

thisClass

public ConstantPoolInfo thisClass

superClass

public ConstantPoolInfo superClass

interfaces

public ConstantPoolInfo[] interfaces

ACC_PUBLIC

public static final int ACC_PUBLIC

See Also:

Constant Field Values

ACC_PRIVATE

public static final int ACC_PRIVATE

See Also:

Constant Field Values

ACC_PROTECTED

public static final int ACC_PROTECTED

See Also:

Constant Field Values

ACC_STATIC

public static final int ACC_STATIC

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Constant Field Values

ACC_FINAL

public static final int ACC_FINAL

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Constant Field Values

ACC_SYNCHRONIZED

public static final int ACC_SYNCHRONIZED

See Also:

Constant Field Values

ACC_THREADSAFE

public static final int ACC_THREADSAFE

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Constant Field Values

ACC_TRANSIENT

public static final int ACC_TRANSIENT

See Also:

Constant Field Values

ACC_NATIVE

public static final int ACC_NATIVE

See Also:

Constant Field Values

ACC_INTERFACE

public static final int ACC_INTERFACE

See Also:

Constant Field Values

ACC_ABSTRACT

public static final int ACC_ABSTRACT

See Also:

Constant Field Values

Constructor Detail

ClassFile

public ClassFile(ConstantPoolInfo poolInfo)

Creates a new instance of ClassFile

Method Detail

containsAnnotation

public boolean containsAnnotation(ReadableByteChannel in,
                                  long size)
                           throws IOException

Read the input channel and initialize instance data structure.

Throws:

IOException

containsAnnotation

public boolean containsAnnotation(byte[] bytecode)
                           throws IOException

Read the input channel and initialize instance data structure.

Throws:

IOException