atavism.server.marshalling

Class MarshallingGenerator

java.lang.Object

atavism.server.marshalling.MarshallingRuntime

atavism.server.marshalling.MarshallingGenerator

public class MarshallingGenerator
extends MarshallingRuntime

This class provides methods to introspect a collection of classes, and generate serialization for the data and supertypes in the class. The process proceeds in two passes; the first pass records the java Class objects associated with each class, and if supplied, the type numbers. The first pass ends by determining that the class DAG is complete, with no classes missing, and assigns type number for any class for which we don't have explicitly assigned number. The second pass has all the class objects for all of the types, and generates marshalling in the form of static delegate methods on a generated class ServerMarshalling in package atavism.server.util. That class contains an encode and decode delegate method for every class, as well as a set of tables that map Class object to type number, and type number to encode/decode delegates. Since this class generates the ServerMarshalling class, there are _two_ compile times required; the first compile time is identical to the current compile time, in that it compiles the non-generated server code. Then we run the Python scripts that name (and enumerate) the classes that must be marshalled, running the first pass of marshalling generation. Once all the classes are enumerated, we run the second pass of marshalling generation, which generates the ServerMarshalling class definition. Finally, the ServerMarshalling class is compiled, and the server is ready to execute. Since this class uses Java introspection to get at the data members, all data members must be declared public. This is a drag, but there is no way around it if we are to use introspection. The on-the-wire representation of a class object that has no lists or property maps contains exactly one type number, and that number is the first short field in the wire representation. For lists and property maps, there is one type number per element, since we won't know the types at compile time. One requirement imposed by the marshalling generation mechanism is that you must be able to create an instance to pass to the introspection routines. This means that there must be _some_ constructor of the type that is does not require the actual server to be running.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MarshallingGenerator.MarshallingPair
static class	MarshallingGenerator.MarshalTestClass1 A test class with all the cases in it
static class	MarshallingGenerator.MarshalTestClass2

Nested classes/interfaces inherited from class atavism.server.marshalling.MarshallingRuntime

MarshallingRuntime.ClassNameAndTypeNumber, MarshallingRuntime.ClassProperties

Field Summary

Fields

Modifier and Type	Field and Description
protected static java.lang.String	generatedMarshallingClass The package name for the generated marhalling - - can be changed by a call to setGeneratedMarshallingClass
protected static java.lang.Class	hashMapClass
protected static java.lang.Class	hashSetClass
protected static java.lang.Class	linkedListClass
protected static java.util.HashMap<java.lang.Short,java.lang.String>	readOps
protected static java.util.HashMap<java.lang.Short,java.lang.String>	writeOps

Fields inherited from class atavism.server.marshalling.MarshallingRuntime

builtinStart, classToClassProperties, firstAggregateTypeNum, firstAtomicTypeNum, firstExpansionTypeNum, firstGeneratedValueType, firstNonPrimitiveAtomicTypeNum, firstPrimitiveAtomicTypeNum, initialized, lastAggregateTypeNum, lastAtomicTypeNum, lastBuiltinTypeNum, lastExpansionTypeNum, lastNonPrimitiveAtomicTypeNum, lastPrimitiveAtomicTypeNum, marshallers, nextGeneratedValueType, nonStoredStart, predefinedTypesInstalled, registeredBuiltTypeCount, typeNumArrayList, typeNumBoolean, typeNumBooleanFalse, typeNumBooleanTrue, typeNumByte, typeNumByteArray, typeNumConcurrentHashMap, typeNumDouble, typeNumFloat, typeNumHashMap, typeNumHashSet, typeNumInteger, typeNumJavaSerializable, typeNumLinkedHashMap, typeNumLinkedHashSet, typeNumLinkedList, typeNumLong, typeNumNull, typeNumPrimitiveBoolean, typeNumPrimitiveByte, typeNumPrimitiveDouble, typeNumPrimitiveFloat, typeNumPrimitiveInteger, typeNumPrimitiveLong, typeNumPrimitiveShort, typeNumShort, typeNumString, typeNumTreeMap, typeNumTreeSet

Constructor Summary

Constructors

Constructor and Description
MarshallingGenerator()

Method Summary

Modifier and Type	Method and Description
protected static java.lang.Class	canonicalType(java.lang.Class c)
protected static void	checkClassPresent(java.lang.Class referringClass, java.lang.Class referredClass, java.util.Map<java.lang.Class,java.util.LinkedList<java.lang.Class>> missingTypes)
protected static boolean	checkTypeReferences()
protected static java.lang.String	createReadOp(java.lang.Class c, java.lang.String fieldName, short fieldTypeNum)
protected static java.lang.String	createWriteOp(java.lang.Class c, java.lang.String getter, java.lang.Short fieldTypeNum)
protected static void	defineRWCode(java.lang.Short typeNumPrimitive, java.lang.Short typeNumNonPrimitive, java.lang.String readOp, java.lang.String writeOp)
protected static void	defineRWCode(java.lang.Short typeNum, java.lang.String readOp, java.lang.String writeOp)
protected static java.lang.String	formatFlagBitReference(int index, int flagBitCount)
protected static java.lang.String	formatTitle(java.lang.String n)
protected static void	generateAssignBytesMarshalling(java.lang.Class c, int n, java.io.FileWriter str, int indent, java.util.LinkedList<java.lang.reflect.Field> fields, java.util.LinkedList<java.lang.Integer> nullTestedFields, int flagBitCount)
static void	generateMarshalling(java.lang.String codeFile) Generate the ServerMarshalling class code
protected static void	generateParseBytesMarshalling(java.lang.Class c, int n, java.io.FileWriter str, int indent)
protected static void	generateToBytesMarshalling(java.lang.Class c, int n, java.io.FileWriter str, int indent, java.util.LinkedList<java.lang.reflect.Field> fields, java.util.LinkedList<java.lang.Integer> nullTestedFields, int flagBitCount)
protected static java.lang.Class	getFieldType(java.lang.reflect.Field f)
protected static java.lang.String	getSimpleClassName(java.lang.Class c)
protected static java.util.LinkedList<java.lang.reflect.Field>	getValidClassFields(java.lang.Class c)
protected static java.lang.Class	getValidSuperclass(java.lang.Class c)
protected static void	initializeCodeGenerator()
protected static boolean	isStaticOrTransient(java.lang.reflect.Field f)
protected static boolean	isStringType(java.lang.Class c)
protected static void	logGenericClassInfo(java.lang.Object object, java.lang.String what)
protected static java.lang.Class	lookupClass(java.lang.String className)
static void	main(java.lang.String[] args)
protected static java.lang.String	makeOmittedTest(java.lang.reflect.Field f)
static void	setGeneratedMarshallingClass(java.lang.String className) Declares the name of the class that will contain the generated marshalling classes - - defaults to AOMarshalling
protected static boolean	supportsMarshallable(java.lang.String className)
protected static boolean	typeIsPrimitive(java.lang.Class c)
protected static void	writeLine(java.io.FileWriter str, int indent, java.lang.String s)

Methods inherited from class atavism.server.marshalling.MarshallingRuntime

addMarshaller, addMarshallingClass, addPrimitiveToTypeMap, builtinAggregateTypeNum, builtinType, builtinType, byteToIntNoSignExtend, checkClassPresent, classRequiresInjection, getClassesToBeMarshalled, getClassForClassName, getClassForTypeNum, getClassNameForObject, getHexString, getNextGeneratedValueType, getSimpleClassName, getTypeNumForClass, getTypeNumForClassName, getTypeNumForClassOrBarf, getTypeNumFromJavaClass, hasMarshallingProperties, hasNoArgConstructor, initialize, initializeBatch, injectAllClasses, injectedClass, installPredefinedTypes, javaClassOrNull, markInjected, marshalArrayList, marshalByteArray, marshalConcurrentHashMap, marshalHashMap, marshalHashSet, marshalledTypeNum, marshalLinkedHashMap, marshalLinkedHashSet, marshalLinkedList, marshalMarshallingObject, marshalObject, marshalSerializable, marshalTreeMap, marshalTreeSet, maybeInjectMarshalling, processMarshallers, readTypeNum, registeredClassesAndTypes, registerMarshallingClass, registerMarshallingClass, registerMarshallingClasses, throwError, translateFieldTypeName, unmarshalArrayList, unmarshalByteArray, unmarshalConcurrentHashMap, unmarshalHashMap, unmarshalHashSet, unmarshalLinkedHashMap, unmarshalLinkedHashSet, unmarshalLinkedList, unmarshalMarshallingObject, unmarshalObject, unmarshalSerializable, unmarshalSerializable2, unmarshalTreeMap, unmarshalTreeSet, valueTypeNum, writeTypeNum

Methods inherited from class java.lang.Object

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

Field Detail

generatedMarshallingClass

protected static java.lang.String generatedMarshallingClass

The package name for the generated marhalling - - can be changed by a call to setGeneratedMarshallingClass

readOps

protected static java.util.HashMap<java.lang.Short,java.lang.String> readOps

writeOps

protected static java.util.HashMap<java.lang.Short,java.lang.String> writeOps

linkedListClass

protected static java.lang.Class linkedListClass

hashMapClass

protected static java.lang.Class hashMapClass

hashSetClass

protected static java.lang.Class hashSetClass

Constructor Detail

MarshallingGenerator

public MarshallingGenerator()

Method Detail

setGeneratedMarshallingClass

public static void setGeneratedMarshallingClass(java.lang.String className)

Declares the name of the class that will contain the generated marshalling classes - - defaults to AOMarshalling

generateMarshalling

public static void generateMarshalling(java.lang.String codeFile)

Generate the ServerMarshalling class code

checkTypeReferences

protected static boolean checkTypeReferences()

supportsMarshallable

protected static boolean supportsMarshallable(java.lang.String className)

generateToBytesMarshalling

protected static void generateToBytesMarshalling(java.lang.Class c,
                                                 int n,
                                                 java.io.FileWriter str,
                                                 int indent,
                                                 java.util.LinkedList<java.lang.reflect.Field> fields,
                                                 java.util.LinkedList<java.lang.Integer> nullTestedFields,
                                                 int flagBitCount)

generateParseBytesMarshalling

protected static void generateParseBytesMarshalling(java.lang.Class c,
                                                    int n,
                                                    java.io.FileWriter str,
                                                    int indent)

generateAssignBytesMarshalling

protected static void generateAssignBytesMarshalling(java.lang.Class c,
                                                     int n,
                                                     java.io.FileWriter str,
                                                     int indent,
                                                     java.util.LinkedList<java.lang.reflect.Field> fields,
                                                     java.util.LinkedList<java.lang.Integer> nullTestedFields,
                                                     int flagBitCount)

makeOmittedTest

protected static java.lang.String makeOmittedTest(java.lang.reflect.Field f)

createWriteOp

protected static java.lang.String createWriteOp(java.lang.Class c,
                                                java.lang.String getter,
                                                java.lang.Short fieldTypeNum)

createReadOp

protected static java.lang.String createReadOp(java.lang.Class c,
                                               java.lang.String fieldName,
                                               short fieldTypeNum)

checkClassPresent

protected static void checkClassPresent(java.lang.Class referringClass,
                                        java.lang.Class referredClass,
                                        java.util.Map<java.lang.Class,java.util.LinkedList<java.lang.Class>> missingTypes)

formatFlagBitReference

protected static java.lang.String formatFlagBitReference(int index,
                                                         int flagBitCount)

formatTitle

protected static java.lang.String formatTitle(java.lang.String n)

writeLine

protected static void writeLine(java.io.FileWriter str,
                                int indent,
                                java.lang.String s)

isStaticOrTransient

protected static boolean isStaticOrTransient(java.lang.reflect.Field f)

getValidSuperclass

protected static java.lang.Class getValidSuperclass(java.lang.Class c)

getValidClassFields

protected static java.util.LinkedList<java.lang.reflect.Field> getValidClassFields(java.lang.Class c)

getFieldType

protected static java.lang.Class getFieldType(java.lang.reflect.Field f)

canonicalType

protected static java.lang.Class canonicalType(java.lang.Class c)

typeIsPrimitive

protected static boolean typeIsPrimitive(java.lang.Class c)

isStringType

protected static boolean isStringType(java.lang.Class c)

getSimpleClassName

protected static java.lang.String getSimpleClassName(java.lang.Class c)

lookupClass

protected static java.lang.Class lookupClass(java.lang.String className)

initializeCodeGenerator

protected static void initializeCodeGenerator()

defineRWCode

protected static void defineRWCode(java.lang.Short typeNumPrimitive,
                                   java.lang.Short typeNumNonPrimitive,
                                   java.lang.String readOp,
                                   java.lang.String writeOp)

defineRWCode

protected static void defineRWCode(java.lang.Short typeNum,
                                   java.lang.String readOp,
                                   java.lang.String writeOp)

logGenericClassInfo

protected static void logGenericClassInfo(java.lang.Object object,
                                          java.lang.String what)

main

public static void main(java.lang.String[] args)