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package com.sun.enterprise.connectors.util;
import com.sun.enterprise.deployment.*;
import com.sun.enterprise.config.serverbeans.ElementProperty;
import com.sun.enterprise.connectors.*;
import com.sun.enterprise.util.*;
import com.sun.logging.LogDomains;
import java.util.logging.*;
import java.util.*;
import java.lang.*;
import java.lang.reflect.*;
import java.io.IOException;
import org.xml.sax.SAXParseException;
import javax.resource.spi.ResourceAdapter;
import javax.resource.spi.ResourceAdapterAssociation;
/**
* This is an util class containing methods for parsing connector
* configurations present in ra.xml.
*
* @author Srikanth P
*
*/
public class ConnectorConfigParserUtils {
static Logger _logger = LogDomains.getLogger(LogDomains.RSR_LOGGER);
/**
* Default constructor.
*
*/
public ConnectorConfigParserUtils() {
}
/**
* Merges the properties obtained by introspecting the javabean and the
* properties present in ra.xml for the corresponding javabean.
*
* @param ddVals Properties obtained from ra.xml for the javabean
* @param introspectedVals Properties obtained by introspecting javabean
* @return Merged Properties present in ra.xml and introspected properties
* of javabean.
*
*/
public Properties mergeProps(Set ddVals,
Properties introspectedVals)
{
Properties mergedVals = new Properties(introspectedVals);
if(ddVals != null) {
Object[] ddProps = ddVals.toArray();
String name = null;
String value = null;
for (int i = 0; i < ddProps.length; i++) {
name = ((EnvironmentProperty)ddProps[i]).getName();
value =((EnvironmentProperty)ddProps[i]).getValue();
mergedVals.setProperty(name,value);
}
}
return mergedVals;
}
/**
* Merges the datatype of properties obtained by introspecting the
* javabean and the datatypes of properties present in ra.xml for
* the corresponding javabean. It is a Properties object consisting of
* property name and the property data type.
*
* @param ddVals Properties obtained from ra.xml for the javabean
* @param introspectedVals Properties obtained by
* introspecting javabean which consist of property name as key
* and datatype as the value.
* @return Merged Properties present in ra.xml and introspected properties
* of javabean. Properties consist of property name as the key
* and datatype as the value.
*
*/
public Properties mergePropsReturnTypes(Set ddVals,
Properties introspectedVals)
{
Properties mergedVals = new Properties(introspectedVals);
if(ddVals != null) {
Object[] ddProps = ddVals.toArray();
String name = null;
String value = null;
for (int i = 0; i < ddProps.length; i++) {
name = ((EnvironmentProperty)ddProps[i]).getName();
value = ((EnvironmentProperty)ddProps[i]).getType();
mergedVals.setProperty(name,value);
}
}
return mergedVals;
}
public Properties introspectJavaBean(String className, Set ddPropsSet)
throws ConnectorRuntimeException {
return introspectJavaBean(className, ddPropsSet, false, null);
}
public Properties introspectJavaBean(String className, Set ddPropsSet,
boolean associateResourceAdapter, String resourceAdapterName)
throws ConnectorRuntimeException {
Class loadedClass = loadClass(className);
Object loadedInstance = instantiate(loadedClass);
try {
if (associateResourceAdapter) {
ActiveResourceAdapter activeRA = ConnectorRegistry.getInstance().
getActiveResourceAdapter(resourceAdapterName);
if (activeRA == null) {
//Check and Load RAR
(new ConnectorServiceImpl()).loadDeferredResourceAdapter(
resourceAdapterName);
activeRA = ConnectorRegistry.getInstance().
getActiveResourceAdapter(resourceAdapterName);
}
//Associate RAR
if (activeRA instanceof ActiveInboundResourceAdapter) {
ResourceAdapter raInstance =
((ActiveInboundResourceAdapter)(activeRA)).getResourceAdapter();
if (loadedInstance instanceof ResourceAdapterAssociation) {
((ResourceAdapterAssociation)loadedInstance).
setResourceAdapter(raInstance);
}
}
}
} catch (Exception e) {
_logger.log(Level.WARNING,
"rardeployment.error_associating_ra",e);
_logger.log(Level.FINE,
"Exception while associating the resource adapter" +
"to the JavaBean",e);
}
return introspectJavaBean(loadedInstance, ddPropsSet);
}
/**
* Introspects the javabean and returns only the introspected properties
* not present in the configuration in ra.xml for the corresponding
* javabean. If no definite value is obtained while introspection of
* a method empty string is taken as the value.
*
* @param className Name of the class to be introspected.
* @param ddProps Set of Properties present in configuration in ra.xml for
* the corresponding javabean.
* @return Introspected properties not present in the configuration in
* ra.xml for the corresponding javabean.
* @throws ConnectorRuntimeException if the Class could not be loaded
* or instantiated.
*/
public Properties introspectJavaBean(
Object javaBeanInstance ,Set ddPropsSet) throws ConnectorRuntimeException
{
Class loadedClass = javaBeanInstance.getClass();
Method[] methods = loadedClass.getMethods();
if(methods == null) {
return null;
}
Properties props = new Properties();
String name = null;
String value = null;
Object[] ddProps = null;
if(ddPropsSet != null) {
ddProps = ddPropsSet.toArray();
}
for(int i=0; i<methods.length;++i) {
_logger.fine("Method -> " + methods[i].getName() + ":" + methods[i].getReturnType());
if(isProperty(methods[i]) && !presentInDDProps(methods[i],ddProps)
&& isValid(methods[i], loadedClass)) {
name = getPropName(methods[i]);
value = getPropValue(methods[i], loadedClass, javaBeanInstance);
props.setProperty(name,value);
}
}
return props;
}
/**
* Introspects the javabean and returns only the introspected properties
* and their datatypes not present in the configuration in ra.xml for
* the corresponding javabean.
*
* @param className Name of the class to be introspected.
* @param ddProps Set of Properties present in configuration in ra.xml for
* the corresponding javabean.
* @return Introspected properties and their datatype not present in the
* configuration in ra.xml for the corresponding javabean. The
* properties consist of property name as the key and datatype as
* the value
* @throws ConnectorRuntimeException if the Class could not be loaded
* or instantiated.
*/
public Properties introspectJavaBeanReturnTypes(
String className,Set ddPropsSet) throws ConnectorRuntimeException
{
Class loadedClass = loadClass(className);
Object loadedInstance = instantiate(loadedClass);
Method[] methods = loadedClass.getMethods();
if(methods == null) {
return null;
}
Properties props = new Properties();
String name = null;
String value = null;
Object[] ddProps = null;
if(ddPropsSet != null) {
ddProps = ddPropsSet.toArray();
}
for(int i=0; i<methods.length;++i) {
if(isProperty(methods[i])&&!presentInDDProps(methods[i],ddProps)) {
name = getPropName(methods[i]);
value = getPropType(methods[i]);
if(value != null) {
props.setProperty(name,value);
}
}
}
return props;
}
/**
* Checks whether the property pertaining to the method is already presenti
* in the array of Properties passed as second argument.
* The properties already present in ra.xml for the corresponding
* javabean is passed as the second argument.
*/
private boolean presentInDDProps(Method method,Object[] ddProps) {
String name = null;
String ddPropName = null;
int length = "set".length();
if(method != null) {
name = method.getName().substring(length);
}
for(int i=0; name != null && ddProps != null && i<ddProps.length;++i) {
ddPropName = ((EnvironmentProperty)ddProps[i]).getName();
if(name.equalsIgnoreCase(ddPropName) == true) {
return true;
}
}
return false;
}
/**
* Checks whether the property is valid or not.
*/
private boolean isValid(Method setMethod, Class loadedClass) {
Method getMethod = correspondingGetMethod( setMethod, loadedClass);
if (getMethod != null) {
return RARUtils.isValidRABeanConfigProperty(getMethod.getReturnType());
} else {
return false;
}
}
/**
* Checks whether the method pertains to a valid javabean property.
* i.e it check whether the method starts with "set" and it has only
* one parameter. It more than one parameter is present it is taken as
* not a property
*
*/
private boolean isProperty(Method method) {
if(method == null) {
return false;
}
String methodName = method.getName();
Class[] parameterTypes = method.getParameterTypes();
if(methodName.startsWith("set") &&
parameterTypes != null && parameterTypes.length == 1) {
return true;
} else {
return false;
}
}
/**
* Gets the property name of the method passed. It strips the first three
* charaters (size of "set") of the method name and converts the first
* character (for the string after stripping) to upper case and returns
* that string.
*
*/
private String getPropName(Method method) {
if(method == null) {
return null;
}
String methodName = method.getName();
int length = "set".length();
String retValue =
methodName.substring(length,length+1).toUpperCase() +
methodName.substring(length+1);
return retValue;
}
/**
* Returns the getXXX() or isXXX() for the setXXX method passed.
* XXX is the javabean property.
* Check is made if there are no parameters for the getXXX() and isXXX()
* methods. If there is any parameter, null is returned.
*/
private Method correspondingGetMethod(Method setMethod,
Class loadedClass) {
Method[] allMethods = loadedClass.getMethods();
if(allMethods == null) {
return null;
}
int length = "set".length();
String methodName = setMethod.getName();
Class[] parameterTypes = null;
String[] possibleGetMethodNames = new String[2];
possibleGetMethodNames[0] = "is"+methodName.substring(length);
possibleGetMethodNames[1] = "get"+methodName.substring(length);
for(int i = 0;i < allMethods.length;++i) {
if(allMethods[i].getName().equals(possibleGetMethodNames[0]) ||
allMethods[i].getName().equals(possibleGetMethodNames[1])) {
parameterTypes = allMethods[i].getParameterTypes();
if(parameterTypes != null && parameterTypes.length == 0) {
return allMethods[i];
}
}
}
return null;
}
/**
* Invokes the method passed and returns the value obtained. If method
* invocation fails empty string is returned. If the return type is not
* of Wrapper class of the primitive types, empty string is returned.
*/
private String getPropValue(Method method,
Class loadedClass, Object loadedInstance) {
Object retValue = null;
Method getMethod = correspondingGetMethod(method, loadedClass);
if(getMethod != null) {
try {
retValue = getMethod.invoke(loadedInstance, (java.lang.Object[])null);
} catch (IllegalAccessException ie) {
_logger.log(Level.FINE,
"rardeployment.illegalaccess_error",loadedClass.getName());
} catch (InvocationTargetException ie) {
_logger.log(Level.FINE,
"Failed to invoke the method",loadedClass.getName());
}
}
return convertToString(retValue);
}
private String getPropType(Method method) {
Class[] parameterTypeClass = method.getParameterTypes();
if(parameterTypeClass.length != 1) {
return null;
}
if(parameterTypeClass[0].isPrimitive() ||
parameterTypeClass[0].getName().equals("java.lang.String")) {
return parameterTypeClass[0].getName();
} else {
return null;
}
}
/**
* Converts the object to String if it belongs to Wrapper class of primitive
* type or a string itself. For all other types empty String is returned.
*/
private String convertToString(Object obj) {
if(obj == null) {
return new String();
}
if(obj instanceof String) {
return (String)obj;
}else if( obj instanceof Integer ||
obj instanceof Float ||
obj instanceof Long ||
obj instanceof Double ||
obj instanceof Character ||
obj instanceof Boolean ||
obj instanceof Byte ||
obj instanceof Short ) {
return String.valueOf(obj);
} else {
return new String();
}
}
/**
* Loads and instantiates the class
* Throws ConnectorRuntimeException if loading or instantiation fails.
*/
private Class loadClass(String className)
throws ConnectorRuntimeException
{
ClassLoader classLoader = ConnectorClassLoader.getInstance();
try {
return classLoader.loadClass(className);
} catch(ClassNotFoundException ce) {
_logger.log(Level.FINE,
"rardeployment.class_not_found",className);
throw new ConnectorRuntimeException(
"ClassNot Found : " + className);
}
}
/**
* Instantiates the class
*/
private Object instantiate(Class loadedClass)
throws ConnectorRuntimeException
{
try {
return loadedClass.newInstance();
} catch(InstantiationException ie) {
_logger.log(Level.FINE,
"rardeployment.class_instantiation_error",loadedClass.getName());
throw new ConnectorRuntimeException(
"Could not instantiate class : " + loadedClass.getName());
} catch (IllegalAccessException ie) {
_logger.log(Level.FINE,
"rardeployment.illegalaccess_error",loadedClass.getName());
throw new ConnectorRuntimeException(
"Couldnot access class : "+loadedClass.getName());
}
}
}
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