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package com.sun.enterprise.deployment;
import com.sun.enterprise.deployment.util.TypeUtil;
import com.sun.enterprise.deployment.util.DOLUtils;
import com.sun.enterprise.util.LocalStringManagerImpl;
import org.glassfish.deployment.common.Descriptor;
import java.lang.reflect.Method;
import java.util.*;
import java.util.logging.Level;
import java.util.logging.Logger;
/** I am a deployment object representing a single method or a collection
* of methods on Enterprise Bean classes.
* @author Danny Coward
*/
public final class MethodDescriptor extends Descriptor {
/** Represents the bean home interface ejbClassSymbol.*/
public static final String EJB_HOME = "Home";
/** Represents the bean local home interface ejbClassSymbol.*/
public static final String EJB_LOCALHOME = "LocalHome";
/** Represents the bean remote interface ejbClassSymbol.*/
public static final String EJB_REMOTE = "Remote";
/** Represents the local interface and no-interface view ejbClassSymbol.*/
public static final String EJB_LOCAL = "Local";
/** Represents the web service interface ejbClassSymbol.*/
public static final String EJB_WEB_SERVICE = "ServiceEndpoint";
/** Represents the bean class ejbClassSymbol.*/
public static final String EJB_BEAN = "Bean";
/** Unused.*/
public static final String ALL_OF_NAME = "AllOfName";
/** The method descriptor name representing all methods.*/
public static final String ALL_METHODS = "*";
/** Represents the bean timeout methods ejbClassSymbol. */
public static final String TIMER_METHOD = "Timer";
/** Represents the bean lifecycle methods ejbClassSymbol. */
public static final String LIFECYCLE_CALLBACK = "LifecycleCallback";
/** Represents the bean MessageEndpoint methods ejbClassSymbol. */
public static final String MESSAGE_ENDPOINT_METHOD = "MessageEndpoint";
private String[] parameterClassNames = null;
private String[] javaParameterClassNames = null;
private String className = ""; // cache this
private String ejbClassSymbol;
private String ejbName;
private static LocalStringManagerImpl localStrings =
new LocalStringManagerImpl(MethodDescriptor.class);
final static Logger _logger = DOLUtils.getDefaultLogger();
private final int JAVA_FORMAT = 1;
private final int XML_FORMAT = -1;
private final int XML_JAVA_FORMAT = 0;
private boolean isExact = false;
/**
* Constructs a method descriptor corresponding to methods on the ejb class defined by the ejbClassSymbol (or home
* and remote if null) with the same name (or all if ALL_METHODS) and paramater list (or just all by name of this is null).
* (Styles 1 2 and 3 in the ejb specification)
*/
public MethodDescriptor(String name, String description, String[] parameterClassNames, String ejbClassSymbol) {
super(name, description);
if (name == null) {
super.setName("");
}
if (parameterClassNames != null)
convertToAppropriateFormat (parameterClassNames);
this.setEjbClassSymbol(ejbClassSymbol);
}
// converts an XML style parameter class name to java style and vice versa
private void convertToAppropriateFormat (String[] parameterClassNames){
int format = isJavaFormat (parameterClassNames);
// not java format so fix the java string
if (format == JAVA_FORMAT) {
this.javaParameterClassNames = parameterClassNames;
this.parameterClassNames =
fixParamClassNames (parameterClassNames);
} else if (format == XML_FORMAT) { // fix the non java string
this.javaParameterClassNames =
xmlFormat2JavaClassNames (parameterClassNames);
this.parameterClassNames = parameterClassNames;
} else if (format == XML_JAVA_FORMAT){
// let them be as it is makes no difference
this.javaParameterClassNames = parameterClassNames;
this.parameterClassNames = parameterClassNames;
}
}
/** Constructor for styles 2 and 1.
** Style 1 iff ALL_METHODS is used
*/
public MethodDescriptor(String name, String description, String ejbClassSymbol) {
super(name, description);
this.parameterClassNames = null;
this.setEjbClassSymbol(ejbClassSymbol);
}
/** Construct an exact method descriptor from the given method object, classloader and ejb descriptor.
*/
public MethodDescriptor(Method method, String methodIntf) {
this(method);
isExact=true;
this.setEjbClassSymbol(methodIntf);
}
/** Construct an method descriptor from the given method object.
*/
public MethodDescriptor(Method method) {
super(method.getName(), "");
Class[] paramTypes = method.getParameterTypes();
this.parameterClassNames = getParameterClassNamesFor(method, paramTypes);
this.javaParameterClassNames = getJavaFormatClassNamesFor(paramTypes);
this.className = method.getDeclaringClass().getName();
}
public MethodDescriptor() {
}
public void setEmptyParameterClassNames() {
parameterClassNames = new String[0];
}
// XXX JD fix this
public void addParameterClass(String parameter) {
if (parameterClassNames==null) {
parameterClassNames = new String[1];
} else {
String [] newParameterClassNames = new String[parameterClassNames.length + 1];
for (int i=0;i<parameterClassNames.length;i++) {
newParameterClassNames[i] = parameterClassNames[i];
}
parameterClassNames = newParameterClassNames;
}
parameterClassNames[parameterClassNames.length-1]=parameter;
javaParameterClassNames = xmlFormat2JavaClassNames (parameterClassNames);
}
public void setEjbName(String ejbName) {
this.ejbName = ejbName;
}
public String getEjbName() {
return ejbName;
}
/** Returns true if I have enough information to specifiy a unique method
* on an ejb's home or remote interface unambiguously.
*/
public boolean isExact() {
if (isExact) {
return true;
}
boolean isExactName = !this.getName().equals(ALL_METHODS);
boolean hasMethodIntf = getEjbClassSymbol()!=null;
boolean hasParamsListed = (this.getParameterClassNames() != null);
return isExactName && hasMethodIntf && hasParamsListed;
}
/**
* <p>
* @return the style level of this method descriptors. According to the J2EE spec, methods
* can be described byt using style 1, style 2 or style 3 xml tags.
* </p>
*/
public int getStyle() {
if ( (getName().equals(ALL_METHODS)) ) {
return 1;
}
if (getParameterClassNames()==null)
return 2;
return 3;
}
public Method getMethod(EjbDescriptor ejbDescriptor) {
Method method = null;
try {
ClassLoader classloader = ejbDescriptor.getEjbBundleDescriptor().getClassLoader();
String[] javaParamClassNames = getJavaParameterClassNames();
if ( ejbClassSymbol == null || ejbClassSymbol.equals("")
|| ejbClassSymbol.equals(EJB_BEAN) || ejbClassSymbol.equals(TIMER_METHOD)
|| ejbClassSymbol.equals(LIFECYCLE_CALLBACK) || ejbClassSymbol.equals(MESSAGE_ENDPOINT_METHOD)) {
try {
if ( !(className.equals("")) ) {
// If declaring class is known, use it. Since method
// can have any access type and there is no need
// to search super-classes, use
// Class.getDeclaredMethod() lookup behavior.
Class declaringClass =classloader.loadClass(className);
return TypeUtil.getDeclaredMethod
(declaringClass, classloader, getName(),
javaParamClassNames);
} else {
// Method is public but can be anywhere in class
// hierarchy.
Class ejbClass = classloader.loadClass
(ejbDescriptor.getEjbClassName());
return TypeUtil.getMethod(ejbClass, classloader,
getName(), javaParamClassNames);
}
} catch(NoSuchMethodException nsme) {}
try {
if( ejbDescriptor.isRemoteInterfacesSupported() ) {
Class homeClass = classloader.loadClass
(ejbDescriptor.getHomeClassName());
return TypeUtil.getMethod(homeClass, classloader,
getName(), javaParamClassNames);
}
} catch(NoSuchMethodException nsme) {}
try {
if( ejbDescriptor.isLocalInterfacesSupported() ) {
Class cl = classloader.loadClass
(ejbDescriptor.getLocalHomeClassName());
return TypeUtil.getMethod(cl, classloader,
getName(), javaParamClassNames);
}
} catch(NoSuchMethodException nsme) {}
try {
if( ejbDescriptor.hasWebServiceEndpointInterface() ) {
Class cl = classloader.loadClass
(ejbDescriptor.getWebServiceEndpointInterfaceName());
return TypeUtil.getMethod(cl, classloader,
getName(), javaParamClassNames);
}
} catch(NoSuchMethodException nsme) {}
}
else if ( ejbClassSymbol.equals(EJB_HOME) ) {
try {
Class homeClass =
classloader.loadClass(ejbDescriptor.getHomeClassName());
method = TypeUtil.getMethod(homeClass, classloader,
getName(), javaParamClassNames);
} catch(NoSuchMethodException nsme) {}
}
else if ( ejbClassSymbol.equals(EJB_LOCALHOME) ) {
try {
Class cl = classloader.loadClass(
ejbDescriptor.getLocalHomeClassName());
method = TypeUtil.getMethod(cl, classloader,
getName(), javaParamClassNames);
} catch(NoSuchMethodException nsme) {}
}
else if ( ejbClassSymbol.equals(EJB_REMOTE) ) {
if( ejbDescriptor.isRemoteInterfacesSupported() ) {
try {
Class cl = classloader.loadClass(
ejbDescriptor.getRemoteClassName());
method = TypeUtil.getMethod(cl, classloader,
getName(), javaParamClassNames);
} catch(NoSuchMethodException nsme) {}
}
if( (method == null) &&
ejbDescriptor.isRemoteBusinessInterfacesSupported() ) {
for(String intf :
ejbDescriptor.getRemoteBusinessClassNames() ) {
try {
Class cl = classloader.loadClass(intf);
method = TypeUtil.getMethod(cl, classloader,
getName(), javaParamClassNames);
} catch(NoSuchMethodException nsme) {}
if( method != null ) {
break;
}
}
}
}
else if ( ejbClassSymbol.equals(EJB_LOCAL) ) {
if (ejbDescriptor.isLocalBean()) {
try {
Class cl = classloader.loadClass(
ejbDescriptor.getEjbClassName());
method = TypeUtil.getMethod(cl, classloader,
getName(), javaParamClassNames);
} catch (NoSuchMethodException nsme) {}
}
if( (method == null) && ejbDescriptor.isLocalInterfacesSupported() ) {
try {
Class cl = classloader.loadClass(
ejbDescriptor.getLocalClassName());
method = TypeUtil.getMethod(cl, classloader,
getName(), javaParamClassNames);
} catch(NoSuchMethodException nsme) {}
}
if( (method == null) &&
ejbDescriptor.isLocalBusinessInterfacesSupported() ) {
for(String intf :
ejbDescriptor.getLocalBusinessClassNames() ) {
try {
Class cl = classloader.loadClass(intf);
method = TypeUtil.getMethod(cl, classloader,
getName(), javaParamClassNames);
} catch(NoSuchMethodException nsme) {}
if( method != null ) {
break;
}
}
}
}
else if ( ejbClassSymbol.equals(EJB_WEB_SERVICE) ) {
try {
Class cl = classloader.loadClass
(ejbDescriptor.getWebServiceEndpointInterfaceName());
method = TypeUtil.getMethod(cl, classloader,
getName(), javaParamClassNames);
} catch(NoSuchMethodException nsme) {}
}
} catch(Exception e) {
_logger.log(Level.SEVERE,"enterprise.deployment.backend.methodClassLoadFailure",new Object[]{e.getMessage(), ejbDescriptor});
}
return method;
}
public Method getMethod(Class declaringClass)
{
try {
return TypeUtil.getMethod(declaringClass,
declaringClass.getClassLoader(),
getName(), getJavaParameterClassNames());
} catch(Exception e) {
_logger.log(Level.SEVERE,"enterprise.deployment.backend.methodClassLoadFailure",new Object[]{declaringClass});
return null;
}
}
public Method getDeclaredMethod(Class declaringClass)
{
try {
return TypeUtil.getDeclaredMethod(declaringClass,
declaringClass.getClassLoader(),
getName(), getJavaParameterClassNames());
} catch(Exception e) {
_logger.log(Level.SEVERE,"enterprise.deployment.backend.methodClassLoadFailure",new Object[]{declaringClass});
return null;
}
}
public Method getDeclaredMethod(EjbDescriptor ejbDescriptor)
{
ClassLoader classloader = ejbDescriptor.getEjbBundleDescriptor().getClassLoader();
try {
Class[] parameterTypes = TypeUtil.paramClassNamesToTypes(
getJavaParameterClassNames(), classloader);
return getDeclaredMethod(ejbDescriptor, parameterTypes);
} catch(Exception e) {
_logger.log(Level.SEVERE,"enterprise.deployment.backend.methodClassLoadFailure",new Object[]{e, ejbDescriptor});
}
return null;
}
public Method getDeclaredMethod(EjbDescriptor ejbDescriptor, Class[] javaParamClassNames)
{
try {
ClassLoader classloader = ejbDescriptor.getEjbBundleDescriptor().getClassLoader();
Class nextClass = classloader.loadClass(ejbDescriptor.getEjbClassName());
String mname = getName();
while((nextClass != Object.class) && (nextClass != null)) {
// Do not use TypeUtil not to spend time converting parameter
// types for each call.
try {
return nextClass.getDeclaredMethod(mname, javaParamClassNames);
} catch (NoSuchMethodException nsme) {
nextClass = nextClass.getSuperclass();
}
}
} catch(Exception e) {
_logger.log(Level.SEVERE,"enterprise.deployment.backend.methodClassLoadFailure",new Object[]{ejbDescriptor});
}
return null;
}
/**
* Performs a conversion from the style1 style2 and style3 (no interface symbol) to
* method descriptors of style3 with an interface symbol.
*/
public Vector doStyleConversion(EjbDescriptor ejbDescriptor, Collection allMethods) { // must be exact methods
Vector v = new Vector();
if (getStyle() == 1) { // STYLE 1
for (Iterator itr = allMethods.iterator(); itr.hasNext();) {
MethodDescriptor next = (MethodDescriptor) itr.next();
// when ejb-name is present
// since it is an optional element in some case
if (this.getEjbName() != null
&& this.getEjbName().length() > 0) {
next.setEjbName(ejbDescriptor.getName());
}
/*
if (!next.isExact()) {
//throw new RuntimeException("Conversion failed: " + next);
}
*/
if (this.getDescription() != null
&& this.getDescription().length() > 0) {
next.setDescription(this.getDescription());
}
if (getEjbClassSymbol()==null) {
v.addElement(next);
} else if (this.getEjbClassSymbol().equals(next.getEjbClassSymbol())) {
v.addElement(next);
}
}
} else if (this.getParameterClassNames() == null) { // STYLE 2
v.addAll(this.getMethodDescriptorsOfName(this.getName(), allMethods));
} else { // STYLE 3, but maybe not exact
if (getEjbClassSymbol()==null) {
v.addAll(this.getMethodDescriptorsOfNameAndParameters(this.getName(), this.getParameterClassNames(), allMethods));
} else {
v.addElement(this); // this must be exact
}
}
return v;
}
private Set getMethodDescriptorsOfNameAndParameters(String name, String[] parameterArray, Collection methodDescriptors) {
Set methods = new HashSet();
for (Iterator itr = getMethodDescriptorsOfName(name, methodDescriptors).iterator(); itr.hasNext();) {
MethodDescriptor next = (MethodDescriptor) itr.next();
next.setEjbName(getEjbName());
if (stringArrayEquals(parameterArray, next.getParameterClassNames())) {
methods.add(next);
}
}
return methods;
}
private Set getMethodDescriptorsOfName(String name, Collection methodDescriptors) {
Set set = new HashSet();
for (Iterator itr = methodDescriptors.iterator(); itr.hasNext();) {
MethodDescriptor next = (MethodDescriptor) itr.next();
next.setEjbName(getEjbName());
if (name.equals(next.getName())) {
if (getEjbClassSymbol()==null) {
set.add(next);
} else if (getEjbClassSymbol().equals(next.getEjbClassSymbol())) {
set.add(next);
}
}
}
return set;
}
/** Returns the ejb class sybol for this method descriptor. */
public String getEjbClassSymbol() {
return this.ejbClassSymbol;
}
/** Sets the ejb class sybol for this method descriptor. */
public void setEjbClassSymbol(String ejbClassSymbol) {
this.ejbClassSymbol = ejbClassSymbol;
}
public String getFormattedString() {
return this.getName() + this.getPrettyParameterString();
}
public String getPrettyParameterString() {
StringBuilder prettyParameterString = new StringBuilder("(");
if (this.parameterClassNames != null) {
for (int i = 0; i < this.parameterClassNames.length; i++) {
int j = i + 1;
if (i > 0) {
prettyParameterString.append(", ").append(this.parameterClassNames[i]).
append(" p").append(j);
} else {
prettyParameterString.append(this.parameterClassNames[i]).
append(" p").append(j);
}
}
}
prettyParameterString.append(")");
return prettyParameterString.toString();
}
public String[] getParameterClassNames() {
return parameterClassNames;
}
public String[] getJavaParameterClassNames (){
return javaParameterClassNames;
}
private boolean stringArrayEquals(String[] s1, String[] s2) {
if (s1 == null && s2 == null) {
return true;
}
if (s1 == null || s2 == null) {
return false;
}
if (s1.length == s2.length) {
for (int i = 0; i < s1.length; i++) {
if (!s1[i].equals(s2[i])) {
return false;
}
}
return true;
} else {
return false;
}
}
/** Equlity iff the parameter names match and the name matches.*/
public boolean equals(Object other) {
if (other instanceof MethodDescriptor) {
MethodDescriptor otherMethodDescriptor = (MethodDescriptor) other;
if (otherMethodDescriptor.getName().equals(getName())
&& stringArrayEquals(otherMethodDescriptor.getParameterClassNames(), getParameterClassNames())) {
// If method names and params match, it still can be a wild-card method-name...
// And wild-card can be present with farious interfaces or no method-intf at all...
if (getEjbClassSymbol()!=null && otherMethodDescriptor.getEjbClassSymbol()!=null) {
// Method descriptors are equal if method-intf value is the same, even if they have
// wild-card method names
return getEjbClassSymbol().equals(otherMethodDescriptor.getEjbClassSymbol());
} else if (getName().equals(ALL_METHODS)) {
// For wild-card method names, method descriptors are equal if method-intf value is not set in both
return (getEjbClassSymbol() == null && otherMethodDescriptor.getEjbClassSymbol() == null);
}
// If method name is provided, and parameters match, we consider the method described being the same
// if the ejb class symbol (method-intf) is not defined in one of the descriptors
return true;
}
}
return false;
}
/** Indicates if a method descriptor implies the other one*/
public boolean implies(Object other) {
if (other != null && other instanceof MethodDescriptor) {
MethodDescriptor otherMethodDescriptor = (MethodDescriptor) other;
if (getName().equals(ALL_METHODS) ||
getName().equals(otherMethodDescriptor.getName())) {
if (getParameterClassNames() == null ||
stringArrayEquals(getParameterClassNames(),
otherMethodDescriptor.getParameterClassNames())) {
return true;
}
}
}
return false;
}
public int hashCode() {
return this.getPrettyParameterString().hashCode() + this.getName().hashCode();
}
/** My pretty format. */
public void print(StringBuffer toStringBuffer) {
toStringBuffer.append("Method Descriptor").append((ejbName==null?"":" for ejb " + ejbName)).append(
" name: ").append(this.getName()).append(" params: ").append(this.getPrettyParameterString()).append(
" intf: ").append(this.ejbClassSymbol);
}
public String prettyPrint() {
return "Name : " + this.getName() + " Params: " + this.getPrettyParameterString() + " Intf: " + this.ejbClassSymbol;
}
public String[] getParameterClassNamesFor(Method method, Class[] paramTypes) {
String[] classNames = new String[paramTypes.length];
for (int i = 0; i < paramTypes.length; i++) {
Class compType = paramTypes[i].getComponentType();
if ( compType == null ) { // not an array
classNames[i] = paramTypes[i].getName();
}
else {
// name of array types should be like int[][][]
// Class.getName() returns something like [[[I
int dimensions = 1;
while(compType.getComponentType()!=null) {
dimensions++;
compType=compType.getComponentType();
}
classNames[i] = compType.getName();
// add "[]" depending on array dimension
for (int j=0;j<dimensions;j++) {
classNames[i] += "[]";
}
}
}
return classNames;
}
private int isJavaFormat (String[] params){
int ret = XML_JAVA_FORMAT;
for (int i=0; i<params.length; i++){
int index = params[i].indexOf ('[');
if (index == -1) {
//not an array thus cannot determine format
ret = XML_JAVA_FORMAT;
continue;
} else if (index == 0) {// begins with [ thus java format
return JAVA_FORMAT;
} else { // not java format thus of form int[][]
return XML_FORMAT;
}
}
return ret;
}
private String[] getJavaFormatClassNamesFor(Class[] paramTypes){
String[] classNames = new String[paramTypes.length];
for (int i = 0; i < paramTypes.length; i++) {
classNames[i] = paramTypes[i].getName();
}
return classNames;
}
private String[] fixParamClassNames(String[] paramClassNames)
{
if(paramClassNames == null) {
return null;
}
String[] newParams = new String[paramClassNames.length];
// This is done for backward compatibility with J2EE 1.2.1
// in which param classnames were wrongly generated in [[[I form.
for ( int i=0; i<paramClassNames.length; i++ ) {
newParams[i] = fixParamClassName(paramClassNames[i]);
}
return newParams;
}
private String[] xmlFormat2JavaClassNames (String[] from) {
String[] to = new String[from.length];
for (int i=0; i<from.length; i++) {
to[i] = xmlFormat2JavaClassNames (from[i]);
}
return to;
}
// Convert arrays from form int[][][] to [[[L form.
public static String xmlFormat2JavaClassNames (String param){
int indexOfArray = param.indexOf ('[');
if (indexOfArray == -1) {// not an array
return param;
}
String buf = param.substring (0, indexOfArray);
int lastIndexOf = param.lastIndexOf (']');
int dimension = lastIndexOf - indexOfArray + 1;
dimension = dimension / 2;
StringBuffer fs = new StringBuffer ();
for (int i=0; i<dimension; i++) {
fs.append ("[");
}
String javaPrimitiveType = (String) getJavaPrimitiveTypes().get(buf);
if (javaPrimitiveType!=null) {
fs.append(javaPrimitiveType);
} else { //default it is a class or a interface
fs.append ("L");
fs.append (buf);
fs.append (";");
}
return fs.toString ();
}
/**
* Computes the mapping between java primitive type and class loaders identifier
* for such types.
*
* @return the mapping with the java primitive type identifier as keys
*/
public synchronized static Map getJavaPrimitiveTypes() {
if (javaPrimitivesTypes==null) {
javaPrimitivesTypes = new Hashtable();
javaPrimitivesTypes.put("char", "C");
javaPrimitivesTypes.put("byte", "B");
javaPrimitivesTypes.put("double", "D");
javaPrimitivesTypes.put("float", "F");
javaPrimitivesTypes.put("int", "I");
javaPrimitivesTypes.put("long", "J");
javaPrimitivesTypes.put("short", "S");
javaPrimitivesTypes.put("boolean", "Z");
}
return javaPrimitivesTypes;
}
private static Map javaPrimitivesTypes;
// Convert arrays from [[[I form to int[][][] form.
public static String fixParamClassName(String param)
{
if ( param.charAt(0) == '[' ) { // an array
int dimensions = param.lastIndexOf('[') + 1;
char code = param.charAt(dimensions);
String newparam=null;
switch (code) {
case 'B':
newparam = "byte";
break;
case 'C':
newparam = "char";
break;
case 'D':
newparam = "double";
break;
case 'F':
newparam = "float";
break;
case 'I':
newparam = "int";
break;
case 'J':
newparam = "long";
break;
case 'S':
newparam = "short";
break;
case 'Z':
newparam = "boolean";
break;
case 'L':
newparam = param.substring(dimensions+1);
break;
default:
newparam = null;
}
StringBuffer buf = new StringBuffer();
buf.append(newparam);
for ( int j=0; j<dimensions; j++ )
buf.append("[]");
newparam = buf.toString();
return newparam;
}
else {
return param;
}
}
}