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package com.sun.enterprise.connectors.util;
import com.sun.enterprise.deployment.EnvironmentProperty;
import java.util.ArrayList;
import java.util.Set;
import java.util.Iterator;
import java.lang.reflect.Method;
import java.util.logging.Level;
import java.util.logging.Logger;
import com.sun.logging.LogDomains;
import java.security.PrivilegedAction;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
import com.sun.enterprise.connectors.ConnectorRuntimeException;
/**
* Executes setter methods on java beans.
*
* @author Qingqing Ouyang, Binod P.G, Sivakumar Thyagarajan
*/
public final class SetMethodAction implements PrivilegedExceptionAction {
private Object bean;
private Set props;
private Method[] methods;
private static final Logger logger =
LogDomains.getLogger(LogDomains.RSR_LOGGER);
/**
* Accepts java bean object and properties to be set.
*/
public SetMethodAction(Object bean, Set props) {
this.bean = bean;
this.props = props;
}
/**
* Executes the setter methods in the java bean.
*/
public Object run() throws Exception {
Iterator it = props.iterator();
methods = bean.getClass().getMethods();
while (it.hasNext()) {
EnvironmentProperty prop = (EnvironmentProperty) it.next();
String propName = prop.getName();
Class type = getTypeOf(prop);
//If there were no getter, use the EnvironmentProperty's
//property type
if ( type == null ) {
type = Class.forName(prop.getType());
}
if (prop.getResolvedValue() != null &&
prop.getResolvedValue().trim().length() != 0) {
Method meth = null;
try {
meth = getMutatorMethod(propName, type);
if (meth != null) {
logger.log(Level.FINER, "Invoking" + meth + " on "
+ bean.getClass().getName() + "with " +
"value [" + prop.getResolvedValueObject().getClass()
+ " , " + getFilteredPropValue(prop) +" ] ");
meth.invoke(bean,new Object[] {prop.getResolvedValueObject()});
} else {
//log WARNING, deployment can continue.
logger.log(Level.WARNING, "rardeployment.no_setter_method",
new Object[]{prop.getName(), bean.getClass().getName()});
}
} catch (IllegalArgumentException ia) {
logger.log(Level.FINE, "IllegalException while trying to set " +
prop.getName() + " and value "+ getFilteredPropValue(prop),
ia + " on an instance of " + bean.getClass() +
" -- trying again with the type from bean");
boolean prevBoundsChecking = EnvironmentProperty.isBoundsChecking();
try {
EnvironmentProperty.setBoundsChecking(false);
prop.setType(type.getName());
logger.log(Level.FINE, "2nd try :: Invoking" + meth + " on "
+ bean.getClass().getName() + "with value ["
+ prop.getResolvedValueObject().getClass()
+ " , " + getFilteredPropValue(prop) +" ] ");
meth.invoke(bean,new Object[] {prop.getResolvedValueObject()});
} catch (Exception e) {
handleException(e, prop, bean);
} finally {
//restore boundsChecking
EnvironmentProperty.setBoundsChecking(prevBoundsChecking);
}
} catch (Exception ex) {
handleException(ex, prop, bean);
}
}
}
return null;
}
private void handleException(Exception ex, EnvironmentProperty prop, Object bean) throws ConnectorRuntimeException {
logger.log(Level.WARNING, "rardeployment.exception_on_invoke_setter",
new Object[]{prop.getName(), getFilteredPropValue(prop),
ex.getMessage()});
logger.log(Level.FINE, "Exception while trying to set " +
prop.getName() + " and value "+ getFilteredPropValue(prop),
ex + " on an instance of " + bean.getClass());
throw (ConnectorRuntimeException)
(new ConnectorRuntimeException(ex.getMessage()).initCause(ex));
}
private static String getFilteredPropValue(EnvironmentProperty prop){
if (prop == null)
return "null";
String propname = prop.getName();
if (propname.toLowerCase().contains("password"))
return "********";
return (prop.getResolvedValue());
}
/**
* Retrieves the appropriate setter method in the resurce adapter java bean
* class
*/
private Method getMutatorMethod(String propertyName, Class type){
String setterMethodName = "set" + getCamelCasedPropertyName(propertyName);
Method m = null;
//Get all setter methods for property
Method[] setterMethods = findMethod(setterMethodName);
if (setterMethods.length == 1) {
//Only one setter method for this property
m = (Method)setterMethods[0];
} else {
//When more than one setter for the property, do type
//checking to determine property
//This check is very important, because the resource
//adapter java-bean's methods might be overridden and calling
//set over the wrong method will result in an exception
for (int i =0; i < setterMethods.length; i++) {
Class[] paramTypes = setterMethods[i].getParameterTypes();
if(paramTypes.length > 0) {
if (paramTypes[0].equals(type) && paramTypes.length == 1){
logger.log(Level.FINER, "Method " + methods[i] +
"matches with the right arg type");
m = setterMethods[i];
}
}
}
}
if ( m != null ) {
return m;
} else {
logger.log(Level.WARNING, "no.such.method",
new Object[] {setterMethodName, bean.getClass().getName()});
return null;
}
}
/**
* Use a property's accessor method in the resource adapter
* javabean to get the Type of the property
*
* This helps in ensuring that the type as coded in the java-bean
* is used while setting values on a java-bean instance,
* rather than on the values specified in ra.xml
*/
private Class getTypeOf(EnvironmentProperty prop) {
String name = prop.getName();
Method accessorMeth = getAccessorMethod(name);
if (accessorMeth != null ) {
return accessorMeth.getReturnType();
}
//not having a getter is not a WARNING.
logger.log(Level.FINE, "method.name.nogetterforproperty",
new Object[] {prop.getName(), bean.getClass()});
return null;
}
/**
* Gets the accessor method for a property
*/
private Method getAccessorMethod(String propertyName){
String getterName = "get" + getCamelCasedPropertyName(propertyName);
Method[] getterMethods = findMethod(getterName);
if (getterMethods.length > 0) {
return getterMethods[0];
} else {
return null;
}
}
/**
* Finds methods in the resource adapter java bean class with the same name
* RA developers could inadvertently not camelCase getters and/or setters
* and this implementation of findMethod returns both camelCased and non-Camel
* cased methods.
*/
private Method[] findMethod(String methodName) {
ArrayList matchedMethods = new ArrayList();
//check for CamelCased Method(s)
for (int i = 0; i < this.methods.length; i++) {
if (methods[i].getName().equals(methodName)){
matchedMethods.add(methods[i]);
}
}
//check for nonCamelCased Method(s)
for (int i = 0; i < this.methods.length; i++) {
if (methods[i].getName().equalsIgnoreCase(methodName)){
matchedMethods.add(methods[i]);
}
}
return (Method[])matchedMethods.toArray(new Method[]{});
}
/**
* Returns camel-cased version of a propertyName. Used to construct
* correct accessor and mutator method names for a give property.
*/
private String getCamelCasedPropertyName(String propertyName){
return propertyName.substring(0,1).toUpperCase() +
propertyName.substring(1);
}
}
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