package org.hotswap.agent.plugin.weld;
import org.hotswap.agent.logging.AgentLogger;
import org.hotswap.agent.util.signature.ClassSignatureComparerHelper;
import org.hotswap.agent.util.signature.ClassSignatureElement;
/**
* Creates signature for Weld proxy class. Signature calculation uses class elements defined in SIGNATURE_ELEMENTS.
*
* @author Vladimir Dvorak
*/
public class WeldClassSignatureHelper {
private static AgentLogger LOGGER = AgentLogger.getLogger(WeldClassSignatureHelper.class);
private static final ClassSignatureElement[] SIGNATURE_ELEM_PROXY = {
ClassSignatureElement.SUPER_CLASS,
ClassSignatureElement.INTERFACES,
ClassSignatureElement.CLASS_ANNOTATION,
ClassSignatureElement.CONSTRUCTOR,
ClassSignatureElement.METHOD,
ClassSignatureElement.METHOD_ANNOTATION,
ClassSignatureElement.METHOD_PARAM_ANNOTATION,
ClassSignatureElement.METHOD_EXCEPTION,
ClassSignatureElement.FIELD,
ClassSignatureElement.FIELD_ANNOTATION
};
private static final ClassSignatureElement[] SIGNATURE_ELEM_METHOD_FIELDS = {
ClassSignatureElement.SUPER_CLASS,
ClassSignatureElement.INTERFACES,
ClassSignatureElement.CLASS_ANNOTATION,
ClassSignatureElement.CONSTRUCTOR,
ClassSignatureElement.CONSTRUCTOR_PRIVATE, // private constructors are used if CONSTRUCTOR && CONSTRUCTOR_PRIVATE are set
ClassSignatureElement.METHOD,
ClassSignatureElement.METHOD_PRIVATE, // private methods are used if METHOD && METHOD_PRIVATE are set
ClassSignatureElement.METHOD_ANNOTATION, // applies to constructors as well
ClassSignatureElement.METHOD_PARAM_ANNOTATION, // applies to constructors as well
ClassSignatureElement.FIELD,
ClassSignatureElement.FIELD_ANNOTATION
};
private static final ClassSignatureElement[] SIGNATURE_ELEM_FIELDS = {
ClassSignatureElement.FIELD,
ClassSignatureElement.FIELD_ANNOTATION
};
/**
* Gets the class signature for proxy class comparison
*
* @param clazz the clazz for which signature is calculated
* @return the java class signature
*/
public static String getSignatureForProxyClass(Class<?> clazz) {
try {
return ClassSignatureComparerHelper.getJavaClassSignature(clazz, SIGNATURE_ELEM_PROXY);
} catch (Exception e) {
LOGGER.error("getSignatureForProxyClass(): Error reading signature", e);
return null;
}
}
/**
* Gets the signature by strategy.
*
* @param strategy the strategy
* @param clazz the clazz
* @return the signature by strategy
*/
public static String getSignatureByStrategy(BeanReloadStrategy strategy, Class<?> clazz) {
if (strategy == null) {
strategy = BeanReloadStrategy.NEVER;
}
switch (strategy) {
case CLASS_CHANGE :
return null;
case METHOD_FIELD_SIGNATURE_CHANGE :
return getClassMethodFieldsSignature(clazz);
case FIELD_SIGNATURE_CHANGE :
return getClassFieldsSignature(clazz);
default:
case NEVER:
return null;
}
}
private static String getClassMethodFieldsSignature(Class<?> clazz) {
try {
return ClassSignatureComparerHelper.getJavaClassSignature(clazz, SIGNATURE_ELEM_METHOD_FIELDS);
} catch (Exception e) {
LOGGER.error("getSignatureForProxyClass(): Error reading signature", e);
return null;
}
}
private static String getClassFieldsSignature(Class<?> clazz) {
try {
return ClassSignatureComparerHelper.getJavaClassSignature(clazz, SIGNATURE_ELEM_FIELDS);
} catch (Exception e) {
LOGGER.error("getSignatureForProxyClass(): Error reading signature", e);
return null;
}
}
}