/**
* Extracts a handle type for the given identifier.
*
* @param identifier The identifier to extract a handle type for.
* @return The representing handle type.
*/
protected static HandleType of(int identifier) {
for (HandleType handleType : HandleType.values()) {
if (handleType.getIdentifier() == identifier) {
return handleType;
}
}
throw new IllegalArgumentException("Unknown handle type: " + identifier);
}
/**
* Returns a method handle for a getter of the given field.
*
* @param fieldDescription The field to represent.
* @return A method handle for a getter of the given field.
*/
public static MethodHandle ofSetter(FieldDescription fieldDescription) {
return new MethodHandle(
HandleType.ofSetter(fieldDescription),
fieldDescription.getDeclaringType().asRawType(),
fieldDescription.getInternalName(),
TypeDescription.VOID,
Collections.singletonList(fieldDescription.getType().asRawType()));
}
/**
* Returns a method handle for a setter of the given field.
*
* @param fieldDescription The field to represent.
* @return A method handle for a setter of the given field.
*/
public static MethodHandle ofGetter(FieldDescription fieldDescription) {
return new MethodHandle(
HandleType.ofGetter(fieldDescription),
fieldDescription.getDeclaringType().asRawType(),
fieldDescription.getInternalName(),
fieldDescription.getType().asRawType(),
Collections.<TypeDescription>emptyList());
}
/**
* Creates a method handle representation of the given method.
*
* @param methodDescription The method ro represent.
* @return A method handle representing the given method.
*/
public static MethodHandle of(MethodDescription methodDescription) {
return new MethodHandle(
HandleType.of(methodDescription),
methodDescription.getDeclaringType().asRawType(),
methodDescription.getInternalName(),
methodDescription.getReturnType().asRawType(),
methodDescription.getParameters().asTypeList().asRawTypes());
}
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
try {
String requestURL = req.getRequestURL().toString();
String handle = DisectHandle.disectHandle(requestURL);
handle = URLDecoder.decode(handle, "UTF-8");
HandleType handleType = HandleType.createType(handle);
handleType.redirect(handle, solrAccess, req, resp);
} catch (Exception e) {
LOGGER.log(Level.SEVERE, e.getMessage(), e);
resp.sendError(500);
}
}
@Override
public int hashCode() {
int result = handleType.hashCode();
result = 31 * result + ownerType.hashCode();
result = 31 * result + name.hashCode();
result = 31 * result + returnType.hashCode();
result = 31 * result + parameterTypes.hashCode();
return result;
}
/**
* Creates a method handle representation of the given method for an explicit special method
* invocation of an otherwise virtual method.
*
* @param methodDescription The method ro represent.
* @param typeDescription The type on which the method is to be invoked on as a special method
* invocation.
* @return A method handle representing the given method as special method invocation.
*/
public static MethodHandle ofSpecial(
MethodDescription methodDescription, TypeDescription typeDescription) {
if (!methodDescription.isSpecializableFor(typeDescription)) {
throw new IllegalArgumentException(
"Cannot specialize " + methodDescription + " for " + typeDescription);
}
return new MethodHandle(
HandleType.ofSpecial(methodDescription),
typeDescription,
methodDescription.getInternalName(),
methodDescription.getReturnType().asRawType(),
methodDescription.getParameters().asTypeList().asRawTypes());
}
/**
* Creates a method handles representation of a loaded method handle .
*
* @param methodHandle The loaded method handle to represent.
* @param lookup The lookup object to use for analyzing the method handle.
* @return A representation of the loaded method handle
*/
public static MethodHandle of(Object methodHandle, Object lookup) {
if (!JavaType.METHOD_HANDLE.getTypeStub().isInstance(methodHandle)) {
throw new IllegalArgumentException("Expected method handle object: " + methodHandle);
} else if (!JavaType.METHOD_HANDLES_LOOKUP.getTypeStub().isInstance(lookup)) {
throw new IllegalArgumentException("Expected method handle lookup object: " + lookup);
}
Object methodHandleInfo =
REVEAL_DIRECT.isInvokable()
? REVEAL_DIRECT.invoke(lookup, methodHandle)
: NEW_METHOD_HANDLE_INFO.invokeStatic(methodHandle);
Object methodType = GET_METHOD_TYPE.invoke(methodHandleInfo);
return new MethodHandle(
HandleType.of((Integer) GET_REFERENCE_KIND.invoke(methodHandleInfo)),
new TypeDescription.ForLoadedType(
(Class<?>) GET_DECLARING_CLASS.invoke(methodHandleInfo)),
(String) GET_NAME.invoke(methodHandleInfo),
new TypeDescription.ForLoadedType((Class<?>) RETURN_TYPE.invoke(methodType)),
new TypeList.ForLoadedType((Class<?>[]) PARAMETER_ARRAY.invoke(methodType)));
}
