org.apache.tapestry5.internal.plastic
Class PlasticClassPool

java.lang.Object
  org.apache.tapestry5.internal.plastic.PlasticClassPool

All Implemented Interfaces:

org.apache.tapestry5.internal.plastic.asm.Opcodes, ClassLoaderDelegate, PlasticClassListenerHub

public class PlasticClassPool
extends Object
implements ClassLoaderDelegate, org.apache.tapestry5.internal.plastic.asm.Opcodes, PlasticClassListenerHub

Responsible for managing a class loader that allows ASM ClassNodes to be instantiated as runtime classes.

Field Summary

Fields inherited from interface org.apache.tapestry5.internal.plastic.asm.Opcodes

AALOAD, AASTORE, ACC_ABSTRACT, ACC_ANNOTATION, ACC_BRIDGE, ACC_DEPRECATED, ACC_ENUM, ACC_FINAL, ACC_INTERFACE, ACC_NATIVE, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_STATIC, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_SYNTHETIC, ACC_TRANSIENT, ACC_VARARGS, ACC_VOLATILE, ACONST_NULL, ALOAD, ANEWARRAY, ARETURN, ARRAYLENGTH, ASM4, ASTORE, ATHROW, BALOAD, BASTORE, BIPUSH, CALOAD, CASTORE, CHECKCAST, D2F, D2I, D2L, DADD, DALOAD, DASTORE, DCMPG, DCMPL, DCONST_0, DCONST_1, DDIV, DLOAD, DMUL, DNEG, DOUBLE, DREM, DRETURN, DSTORE, DSUB, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, F_APPEND, F_CHOP, F_FULL, F_NEW, F_SAME, F_SAME1, F2D, F2I, F2L, FADD, FALOAD, FASTORE, FCMPG, FCMPL, FCONST_0, FCONST_1, FCONST_2, FDIV, FLOAD, FLOAT, FMUL, FNEG, FREM, FRETURN, FSTORE, FSUB, GETFIELD, GETSTATIC, GOTO, H_GETFIELD, H_GETSTATIC, H_INVOKEINTERFACE, H_INVOKESPECIAL, H_INVOKESTATIC, H_INVOKEVIRTUAL, H_NEWINVOKESPECIAL, H_PUTFIELD, H_PUTSTATIC, I2B, I2C, I2D, I2F, I2L, I2S, IADD, IALOAD, IAND, IASTORE, ICONST_0, ICONST_1, ICONST_2, ICONST_3, ICONST_4, ICONST_5, ICONST_M1, IDIV, IF_ACMPEQ, IF_ACMPNE, IF_ICMPEQ, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ICMPLT, IF_ICMPNE, IFEQ, IFGE, IFGT, IFLE, IFLT, IFNE, IFNONNULL, IFNULL, IINC, ILOAD, IMUL, INEG, INSTANCEOF, INTEGER, INVOKEDYNAMIC, INVOKEINTERFACE, INVOKESPECIAL, INVOKESTATIC, INVOKEVIRTUAL, IOR, IREM, IRETURN, ISHL, ISHR, ISTORE, ISUB, IUSHR, IXOR, JSR, L2D, L2F, L2I, LADD, LALOAD, LAND, LASTORE, LCMP, LCONST_0, LCONST_1, LDC, LDIV, LLOAD, LMUL, LNEG, LONG, LOOKUPSWITCH, LOR, LREM, LRETURN, LSHL, LSHR, LSTORE, LSUB, LUSHR, LXOR, MONITORENTER, MONITOREXIT, MULTIANEWARRAY, NEW, NEWARRAY, NOP, NULL, POP, POP2, PUTFIELD, PUTSTATIC, RET, RETURN, SALOAD, SASTORE, SIPUSH, SWAP, T_BOOLEAN, T_BYTE, T_CHAR, T_DOUBLE, T_FLOAT, T_INT, T_LONG, T_SHORT, TABLESWITCH, TOP, UNINITIALIZED_THIS, V1_1, V1_2, V1_3, V1_4, V1_5, V1_6, V1_7

Constructor Summary

PlasticClassPool(ClassLoader parentLoader, PlasticManagerDelegate delegate, Set<String> controlledPackages, Set<TransformationOption> options)
Creates the pool with a set of controlled packages; all classes in the controlled packages are loaded by the pool's class loader, and all top-level classes in the controlled packages are transformed via the delegate.

Method Summary

void	addPlasticClassListener(PlasticClassListener listener)
org.apache.tapestry5.internal.plastic.asm.tree.ClassNode	constructClassNodeFromBytecode(String className) Constructs a class node by reading the raw bytecode for a class and instantiating a ClassNode (via ClassReader.accept(org.apache.tapestry5.internal.plastic.asm.ClassVisitor, int)).
protected Object	createAnnotation(String className, org.apache.tapestry5.internal.plastic.asm.tree.AnnotationNode node)
AnnotationAccess	createAnnotationAccess(List<org.apache.tapestry5.internal.plastic.asm.tree.AnnotationNode> annotationNodes)
AnnotationAccess	createAnnotationAccess(String className)
PlasticClassTransformation	createTransformation(String baseClassName, String newClassName)
ClassInstantiator	getClassInstantiator(String className)
ClassLoader	getClassLoader()
InternalPlasticClassTransformation	getPlasticClassTransformation(String className) For a fully-qualified class name of an existing class, loads the bytes for the class and returns a PlasticClass instance.
Class<?>	loadAndTransformClass(String className) Load the class, transforming it as necessary.
Class	realize(String primaryClassName, ClassType classType, org.apache.tapestry5.internal.plastic.asm.tree.ClassNode classNode)
Class	realizeTransformedClass(org.apache.tapestry5.internal.plastic.asm.tree.ClassNode classNode, InheritanceData inheritanceData, StaticContext staticContext)
void	removePlasticClassListener(PlasticClassListener listener)
boolean	shouldInterceptClassLoading(String className) Identifies which classes are to be loaded.

Methods inherited from class java.lang.Object

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

Constructor Detail

PlasticClassPool

public PlasticClassPool(ClassLoader parentLoader,
                        PlasticManagerDelegate delegate,
                        Set<String> controlledPackages,
                        Set<TransformationOption> options)

Creates the pool with a set of controlled packages; all classes in the controlled packages are loaded by the pool's class loader, and all top-level classes in the controlled packages are transformed via the delegate.

Parameters:

parentLoader - typically, the Thread's context class loader

delegate - responsible for end stages of transforming top-level classes

controlledPackages - set of package names (note: retained, not copied)

options - used when transforming classes

Method Detail

getClassLoader

public ClassLoader getClassLoader()

realizeTransformedClass

public Class realizeTransformedClass(org.apache.tapestry5.internal.plastic.asm.tree.ClassNode classNode,
                                     InheritanceData inheritanceData,
                                     StaticContext staticContext)

realize

public Class realize(String primaryClassName,
                     ClassType classType,
                     org.apache.tapestry5.internal.plastic.asm.tree.ClassNode classNode)

createAnnotationAccess

public AnnotationAccess createAnnotationAccess(String className)

createAnnotationAccess

public AnnotationAccess createAnnotationAccess(List<org.apache.tapestry5.internal.plastic.asm.tree.AnnotationNode> annotationNodes)

createAnnotation

protected Object createAnnotation(String className,
                                  org.apache.tapestry5.internal.plastic.asm.tree.AnnotationNode node)

shouldInterceptClassLoading

public boolean shouldInterceptClassLoading(String className)

Description copied from interface: ClassLoaderDelegate

Identifies which classes are to be loaded.

Specified by:

shouldInterceptClassLoading in interface ClassLoaderDelegate

Parameters:

className - fully qualified class name

Returns:

true if the class should be intercepted, false to let parent class loader load class

loadAndTransformClass

public Class<?> loadAndTransformClass(String className)
                               throws ClassNotFoundException

Description copied from interface: ClassLoaderDelegate

Load the class, transforming it as necessary.

Specified by:

loadAndTransformClass in interface ClassLoaderDelegate

Parameters:

className - binary class name

Returns:

loaded and (if not an inner class) transformed class

Throws:

ClassNotFoundException

getPlasticClassTransformation

public InternalPlasticClassTransformation getPlasticClassTransformation(String className)
                                                                 throws ClassNotFoundException

For a fully-qualified class name of an existing class, loads the bytes for the class and returns a PlasticClass instance.

Throws:

ClassNotFoundException

constructClassNodeFromBytecode

public org.apache.tapestry5.internal.plastic.asm.tree.ClassNode constructClassNodeFromBytecode(String className)

Constructs a class node by reading the raw bytecode for a class and instantiating a ClassNode (via ClassReader.accept(org.apache.tapestry5.internal.plastic.asm.ClassVisitor, int)).

Parameters:

className - fully qualified class name

Returns:

corresponding ClassNode

createTransformation

public PlasticClassTransformation createTransformation(String baseClassName,
                                                       String newClassName)

getClassInstantiator

public ClassInstantiator getClassInstantiator(String className)

addPlasticClassListener

public void addPlasticClassListener(PlasticClassListener listener)

Specified by:

addPlasticClassListener in interface PlasticClassListenerHub

removePlasticClassListener

public void removePlasticClassListener(PlasticClassListener listener)

Specified by:

removePlasticClassListener in interface PlasticClassListenerHub