ApplicationDispatcher.java
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|---|---|---|
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org.apache.catalina.core |
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Apache Tomcat |
View: Reasons, Metrics, Source Code
These are the metrics that contribute to the Enerjy Score for this file, ranked by impact. So the metrics listed at the top influence the score to a greater extent that the metrics listed at the bottom.
| Metric | Description | |
|---|---|---|
| JAVA0034 | JAVA0034 Missing braces in if statement |  |
| EXEC_COMMENTS | Comments in executable code | |
| LINE_COMMENT | Number of line comments | |
| SIZE | Size of the file in bytes | |
| ELOC | Effective lines of code | |
| CYCLOMATIC | Cyclomatic complexity | |
| LINES | Number of lines in the source file | |
| DECL_COMMENTS | Comments in declarations | |
| LOC | Lines of code | |
| LOGICAL_LINES | Number of statements | |
| OPERANDS | Number of operands | |
| PROGRAM_LENGTH | Halstead program length | |
| OPERATORS | Number of operators | |
| EXITS | Procedure exits | |
| JAVA0163 | JAVA0163 Empty statement | |
| BLOCKS | Number of blocks | |
| JAVA0130 | JAVA0130 Non-static method does not use instance fields | |
| UNIQUE_OPERANDS | Number of unique operands | |
| COMMENTS | Comment lines | |
| RETURNS | Number of return points from functions | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| INTERFACE_COMPLEXITY | Interface complexity | |
| JAVA0166 | JAVA0166 Generic exception caught | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| DOC_COMMENT | Number of javadoc comment lines | |
| WHITESPACE | Number of whitespace lines | |
| LOOPS | Number of loops | |
| JAVA0170 | JAVA0170 Caught exception not derived from java.lang.Exception | |
| COMPARISONS | Number of comparison operators | |
| JAVA0179 | JAVA0179 Local variable hides visible field | |
| JAVA0169 | JAVA0169 Unnecessary catch block: exception 'exception' | |
| PARAMS | Number of formal parameter declarations | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0128 | JAVA0128 Public constructor in non-public class | |
| PROGRAM_VOLUME | Halstead program volume | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0043 | JAVA0043 Inner class does not use outer class | |
| UNIQUE_OPERATORS | Number of unique operators | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.catalina.core;
import java.io.IOException;
import java.io.PrintWriter;
import java.security.AccessController;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
import javax.servlet.RequestDispatcher;
import javax.servlet.Servlet;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.ServletRequest;
import javax.servlet.ServletRequestWrapper;
import javax.servlet.ServletResponse;
import javax.servlet.ServletResponseWrapper;
import javax.servlet.UnavailableException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.catalina.Context;
import org.apache.catalina.Globals;
import org.apache.catalina.InstanceEvent;
import org.apache.catalina.Wrapper;
import org.apache.catalina.connector.ClientAbortException;
import org.apache.catalina.connector.Request;
import org.apache.catalina.connector.RequestFacade;
import org.apache.catalina.connector.Response;
import org.apache.catalina.connector.ResponseFacade;
import org.apache.catalina.util.InstanceSupport;
import org.apache.catalina.util.StringManager;
/**
* Standard implementation of <code>RequestDispatcher</code> that allows a
* request to be forwarded to a different resource to create the ultimate
* response, or to include the output of another resource in the response
* from this resource. This implementation allows application level servlets
* to wrap the request and/or response objects that are passed on to the
* called resource, as long as the wrapping classes extend
* <code>javax.servlet.ServletRequestWrapper</code> and
* <code>javax.servlet.ServletResponseWrapper</code>.
*
* @author Craig R. McClanahan
* @version $Revision: 588477 $ $Date: 2007-10-25 22:37:39 -0400 (Thu, 25 Oct 2007) $
*/
final class ApplicationDispatcher
implements RequestDispatcher {
protected class PrivilegedForward implements PrivilegedExceptionAction {
private ServletRequest request;
private ServletResponse response;
PrivilegedForward(ServletRequest request, ServletResponse response)
{
this.request = request;
this.response = response;
}
public Object run() throws java.lang.Exception {
doForward(request,response);
return null;
}
}
protected class PrivilegedInclude implements PrivilegedExceptionAction {
private ServletRequest request;
private ServletResponse response;
PrivilegedInclude(ServletRequest request, ServletResponse response)
{
this.request = request;
this.response = response;
}
public Object run() throws ServletException, IOException {
doInclude(request,response);
return null;
}
}
/**
* Used to pass state when the request dispatcher is used. Using instance
* variables causes threading issues and state is too complex to pass and
* return single ServletRequest or ServletResponse objects.
*/
private class State {
State(ServletRequest request, ServletResponse response,
boolean including) {
this.outerRequest = request;
this.outerResponse = response;
this.including = including;
}
/**
* The outermost request that will be passed on to the invoked servlet.
*/
ServletRequest outerRequest = null;
/**
* The outermost response that will be passed on to the invoked servlet.
*/
ServletResponse outerResponse = null;
/**
* The request wrapper we have created and installed (if any).
*/
ServletRequest wrapRequest = null;
/**
* The response wrapper we have created and installed (if any).
*/
ServletResponse wrapResponse = null;
/**
* Are we performing an include() instead of a forward()?
*/
boolean including = false;
/**
* Outer most HttpServletRequest in the chain
*/
HttpServletRequest hrequest = null;
/**
* Outermost HttpServletResponse in the chain
*/
HttpServletResponse hresponse = null;
}
// ----------------------------------------------------------- Constructors
/**
* Construct a new instance of this class, configured according to the
* specified parameters. If both servletPath and pathInfo are
* <code>null</code>, it will be assumed that this RequestDispatcher
* was acquired by name, rather than by path.
*
* @param wrapper The Wrapper associated with the resource that will
* be forwarded to or included (required)
* @param requestURI The request URI to this resource (if any)
* @param servletPath The revised servlet path to this resource (if any)
* @param pathInfo The revised extra path information to this resource
* (if any)
* @param queryString Query string parameters included with this request
* (if any)
* @param name Servlet name (if a named dispatcher was created)
* else <code>null</code>
*/
public ApplicationDispatcher
(Wrapper wrapper, String requestURI, String servletPath,
String pathInfo, String queryString, String name) {
super();
// Save all of our configuration parameters
this.wrapper = wrapper;
this.context = (Context) wrapper.getParent();
this.requestURI = requestURI;
this.servletPath = servletPath;
this.pathInfo = pathInfo;
this.queryString = queryString;
this.name = name;
if (wrapper instanceof StandardWrapper)
this.support = ((StandardWrapper) wrapper).getInstanceSupport();
else
this.support = new InstanceSupport(wrapper);
}
// ----------------------------------------------------- Instance Variables
/**
* The Context this RequestDispatcher is associated with.
*/
private Context context = null;
/**
* Descriptive information about this implementation.
*/
private static final String info =
"org.apache.catalina.core.ApplicationDispatcher/1.0";
/**
* The servlet name for a named dispatcher.
*/
private String name = null;
/**
* The extra path information for this RequestDispatcher.
*/
private String pathInfo = null;
/**
* The query string parameters for this RequestDispatcher.
*/
private String queryString = null;
/**
* The request URI for this RequestDispatcher.
*/
private String requestURI = null;
/**
* The servlet path for this RequestDispatcher.
*/
private String servletPath = null;
/**
* The StringManager for this package.
*/
private static final StringManager sm =
StringManager.getManager(Constants.Package);
/**
* The InstanceSupport instance associated with our Wrapper (used to
* send "before dispatch" and "after dispatch" events.
*/
private InstanceSupport support = null;
/**
* The Wrapper associated with the resource that will be forwarded to
* or included.
*/
private Wrapper wrapper = null;
// ------------------------------------------------------------- Properties
/**
* Return the descriptive information about this implementation.
*/
public String getInfo() {
return (info);
}
// --------------------------------------------------------- Public Methods
/**
* Forward this request and response to another resource for processing.
* Any runtime exception, IOException, or ServletException thrown by the
* called servlet will be propogated to the caller.
*
* @param request The servlet request to be forwarded
* @param response The servlet response to be forwarded
*
* @exception IOException if an input/output error occurs
* @exception ServletException if a servlet exception occurs
*/
public void forward(ServletRequest request, ServletResponse response)
throws ServletException, IOException
{
if (Globals.IS_SECURITY_ENABLED) {
try {
PrivilegedForward dp = new PrivilegedForward(request,response);
AccessController.doPrivileged(dp);
} catch (PrivilegedActionException pe) {
Exception e = pe.getException();
if (e instanceof ServletException)
throw (ServletException) e;
throw (IOException) e;
}
} else {
doForward(request,response);
}
}
private void doForward(ServletRequest request, ServletResponse response)
throws ServletException, IOException
{
// Reset any output that has been buffered, but keep headers/cookies
if (response.isCommitted()) {
throw new IllegalStateException
(sm.getString("applicationDispatcher.forward.ise"));
}
try {
response.resetBuffer();
} catch (IllegalStateException e) {
throw e;
}
// Set up to handle the specified request and response
State state = new State(request, response, false);
if (Globals.STRICT_SERVLET_COMPLIANCE) {
// Check SRV.8.2 / SRV.14.2.5.1 compliance
checkSameObjects(request, response);
}
wrapResponse(state);
// Handle an HTTP named dispatcher forward
if ((servletPath == null) && (pathInfo == null)) {
ApplicationHttpRequest wrequest =
(ApplicationHttpRequest) wrapRequest(state);
HttpServletRequest hrequest = state.hrequest;
wrequest.setRequestURI(hrequest.getRequestURI());
wrequest.setContextPath(hrequest.getContextPath());
wrequest.setServletPath(hrequest.getServletPath());
wrequest.setPathInfo(hrequest.getPathInfo());
wrequest.setQueryString(hrequest.getQueryString());
processRequest(request,response,state);
}
// Handle an HTTP path-based forward
else {
ApplicationHttpRequest wrequest =
(ApplicationHttpRequest) wrapRequest(state);
String contextPath = context.getPath();
HttpServletRequest hrequest = state.hrequest;
if (hrequest.getAttribute(Globals.FORWARD_REQUEST_URI_ATTR) == null) {
wrequest.setAttribute(Globals.FORWARD_REQUEST_URI_ATTR,
hrequest.getRequestURI());
wrequest.setAttribute(Globals.FORWARD_CONTEXT_PATH_ATTR,
hrequest.getContextPath());
wrequest.setAttribute(Globals.FORWARD_SERVLET_PATH_ATTR,
hrequest.getServletPath());
wrequest.setAttribute(Globals.FORWARD_PATH_INFO_ATTR,
hrequest.getPathInfo());
wrequest.setAttribute(Globals.FORWARD_QUERY_STRING_ATTR,
hrequest.getQueryString());
}
wrequest.setContextPath(contextPath);
wrequest.setRequestURI(requestURI);
wrequest.setServletPath(servletPath);
wrequest.setPathInfo(pathInfo);
if (queryString != null) {
wrequest.setQueryString(queryString);
wrequest.setQueryParams(queryString);
}
processRequest(request,response,state);
}
// This is not a real close in order to support error processing
if (wrapper.getLogger().isDebugEnabled() )
wrapper.getLogger().debug(" Disabling the response for futher output");
if (response instanceof ResponseFacade) {
((ResponseFacade) response).finish();
} else {
// Servlet SRV.6.2.2. The Resquest/Response may have been wrapped
// and may no longer be instance of RequestFacade
if (wrapper.getLogger().isDebugEnabled()){
wrapper.getLogger().debug( " The Response is vehiculed using a wrapper: "
+ response.getClass().getName() );
}
// Close anyway
try {
PrintWriter writer = response.getWriter();
writer.close();
} catch (IllegalStateException e) {
try {
ServletOutputStream stream = response.getOutputStream();
stream.close();
} catch (IllegalStateException f) {
;
} catch (IOException f) {
;
}
} catch (IOException e) {
;
}
}
}
/**
* Prepare the request based on the filter configuration.
* @param request The servlet request we are processing
* @param response The servlet response we are creating
* @param state The RD state
*
* @exception IOException if an input/output error occurs
* @exception ServletException if a servlet error occurs
*/
private void processRequest(ServletRequest request,
ServletResponse response,
State state)
throws IOException, ServletException {
Integer disInt = (Integer) request.getAttribute
(ApplicationFilterFactory.DISPATCHER_TYPE_ATTR);
if (disInt != null) {
if (disInt.intValue() != ApplicationFilterFactory.ERROR) {
state.outerRequest.setAttribute
(ApplicationFilterFactory.DISPATCHER_REQUEST_PATH_ATTR,
servletPath);
state.outerRequest.setAttribute
(ApplicationFilterFactory.DISPATCHER_TYPE_ATTR,
Integer.valueOf(ApplicationFilterFactory.FORWARD));
invoke(state.outerRequest, response, state);
} else {
invoke(state.outerRequest, response, state);
}
}
}
/**
* Include the response from another resource in the current response.
* Any runtime exception, IOException, or ServletException thrown by the
* called servlet will be propogated to the caller.
*
* @param request The servlet request that is including this one
* @param response The servlet response to be appended to
*
* @exception IOException if an input/output error occurs
* @exception ServletException if a servlet exception occurs
*/
public void include(ServletRequest request, ServletResponse response)
throws ServletException, IOException
{
if (Globals.IS_SECURITY_ENABLED) {
try {
PrivilegedInclude dp = new PrivilegedInclude(request,response);
AccessController.doPrivileged(dp);
} catch (PrivilegedActionException pe) {
Exception e = pe.getException();
if (e instanceof ServletException)
throw (ServletException) e;
throw (IOException) e;
}
} else {
doInclude(request,response);
}
}
private void doInclude(ServletRequest request, ServletResponse response)
throws ServletException, IOException
{
// Set up to handle the specified request and response
State state = new State(request, response, true);
if (Globals.STRICT_SERVLET_COMPLIANCE) {
// Check SRV.8.2 / SRV.14.2.5.1 compliance
checkSameObjects(request, response);
}
// Create a wrapped response to use for this request
wrapResponse(state);
// Handle an HTTP named dispatcher include
if (name != null) {
ApplicationHttpRequest wrequest =
(ApplicationHttpRequest) wrapRequest(state);
wrequest.setAttribute(Globals.NAMED_DISPATCHER_ATTR, name);
if (servletPath != null)
wrequest.setServletPath(servletPath);
wrequest.setAttribute(ApplicationFilterFactory.DISPATCHER_TYPE_ATTR,
Integer.valueOf(ApplicationFilterFactory.INCLUDE));
wrequest.setAttribute(
ApplicationFilterFactory.DISPATCHER_REQUEST_PATH_ATTR,
servletPath);
invoke(state.outerRequest, state.outerResponse, state);
}
// Handle an HTTP path based include
else {
ApplicationHttpRequest wrequest =
(ApplicationHttpRequest) wrapRequest(state);
String contextPath = context.getPath();
if (requestURI != null)
wrequest.setAttribute(Globals.INCLUDE_REQUEST_URI_ATTR,
requestURI);
if (contextPath != null)
wrequest.setAttribute(Globals.INCLUDE_CONTEXT_PATH_ATTR,
contextPath);
if (servletPath != null)
wrequest.setAttribute(Globals.INCLUDE_SERVLET_PATH_ATTR,
servletPath);
if (pathInfo != null)
wrequest.setAttribute(Globals.INCLUDE_PATH_INFO_ATTR,
pathInfo);
if (queryString != null) {
wrequest.setAttribute(Globals.INCLUDE_QUERY_STRING_ATTR,
queryString);
wrequest.setQueryParams(queryString);
}
wrequest.setAttribute(ApplicationFilterFactory.DISPATCHER_TYPE_ATTR,
Integer.valueOf(ApplicationFilterFactory.INCLUDE));
wrequest.setAttribute(
ApplicationFilterFactory.DISPATCHER_REQUEST_PATH_ATTR,
servletPath);
invoke(state.outerRequest, state.outerResponse, state);
}
}
// -------------------------------------------------------- Private Methods
/**
* Ask the resource represented by this RequestDispatcher to process
* the associated request, and create (or append to) the associated
* response.
* <p>
* <strong>IMPLEMENTATION NOTE</strong>: This implementation assumes
* that no filters are applied to a forwarded or included resource,
* because they were already done for the original request.
*
* @param request The servlet request we are processing
* @param response The servlet response we are creating
*
* @exception IOException if an input/output error occurs
* @exception ServletException if a servlet error occurs
*/
private void invoke(ServletRequest request, ServletResponse response,
State state) throws IOException, ServletException {
// Checking to see if the context classloader is the current context
// classloader. If it's not, we're saving it, and setting the context
// classloader to the Context classloader
ClassLoader oldCCL = Thread.currentThread().getContextClassLoader();
ClassLoader contextClassLoader = context.getLoader().getClassLoader();
if (oldCCL != contextClassLoader) {
Thread.currentThread().setContextClassLoader(contextClassLoader);
} else {
oldCCL = null;
}
// Initialize local variables we may need
HttpServletResponse hresponse = state.hresponse;
Servlet servlet = null;
IOException ioException = null;
ServletException servletException = null;
RuntimeException runtimeException = null;
boolean unavailable = false;
// Check for the servlet being marked unavailable
if (wrapper.isUnavailable()) {
wrapper.getLogger().warn(
sm.getString("applicationDispatcher.isUnavailable",
wrapper.getName()));
long available = wrapper.getAvailable();
if ((available > 0L) && (available < Long.MAX_VALUE))
hresponse.setDateHeader("Retry-After", available);
hresponse.sendError(HttpServletResponse.SC_SERVICE_UNAVAILABLE, sm
.getString("applicationDispatcher.isUnavailable", wrapper
.getName()));
unavailable = true;
}
// Allocate a servlet instance to process this request
try {
if (!unavailable) {
servlet = wrapper.allocate();
}
} catch (ServletException e) {
wrapper.getLogger().error(sm.getString("applicationDispatcher.allocateException",
wrapper.getName()), StandardWrapper.getRootCause(e));
servletException = e;
servlet = null;
} catch (Throwable e) {
wrapper.getLogger().error(sm.getString("applicationDispatcher.allocateException",
wrapper.getName()), e);
servletException = new ServletException
(sm.getString("applicationDispatcher.allocateException",
wrapper.getName()), e);
servlet = null;
}
// Get the FilterChain Here
ApplicationFilterFactory factory = ApplicationFilterFactory.getInstance();
ApplicationFilterChain filterChain = factory.createFilterChain(request,
wrapper,servlet);
// Call the service() method for the allocated servlet instance
try {
String jspFile = wrapper.getJspFile();
if (jspFile != null)
request.setAttribute(Globals.JSP_FILE_ATTR, jspFile);
else
request.removeAttribute(Globals.JSP_FILE_ATTR);
support.fireInstanceEvent(InstanceEvent.BEFORE_DISPATCH_EVENT,
servlet, request, response);
// for includes/forwards
if ((servlet != null) && (filterChain != null)) {
filterChain.doFilter(request, response);
}
// Servlet Service Method is called by the FilterChain
request.removeAttribute(Globals.JSP_FILE_ATTR);
support.fireInstanceEvent(InstanceEvent.AFTER_DISPATCH_EVENT,
servlet, request, response);
} catch (ClientAbortException e) {
request.removeAttribute(Globals.JSP_FILE_ATTR);
support.fireInstanceEvent(InstanceEvent.AFTER_DISPATCH_EVENT,
servlet, request, response);
ioException = e;
} catch (IOException e) {
request.removeAttribute(Globals.JSP_FILE_ATTR);
support.fireInstanceEvent(InstanceEvent.AFTER_DISPATCH_EVENT,
servlet, request, response);
wrapper.getLogger().error(sm.getString("applicationDispatcher.serviceException",
wrapper.getName()), e);
ioException = e;
} catch (UnavailableException e) {
request.removeAttribute(Globals.JSP_FILE_ATTR);
support.fireInstanceEvent(InstanceEvent.AFTER_DISPATCH_EVENT,
servlet, request, response);
wrapper.getLogger().error(sm.getString("applicationDispatcher.serviceException",
wrapper.getName()), e);
servletException = e;
wrapper.unavailable(e);
} catch (ServletException e) {
request.removeAttribute(Globals.JSP_FILE_ATTR);
support.fireInstanceEvent(InstanceEvent.AFTER_DISPATCH_EVENT,
servlet, request, response);
Throwable rootCause = StandardWrapper.getRootCause(e);
if (!(rootCause instanceof ClientAbortException)) {
wrapper.getLogger().error(sm.getString("applicationDispatcher.serviceException",
wrapper.getName()), rootCause);
}
servletException = e;
} catch (RuntimeException e) {
request.removeAttribute(Globals.JSP_FILE_ATTR);
support.fireInstanceEvent(InstanceEvent.AFTER_DISPATCH_EVENT,
servlet, request, response);
wrapper.getLogger().error(sm.getString("applicationDispatcher.serviceException",
wrapper.getName()), e);
runtimeException = e;
}
// Release the filter chain (if any) for this request
try {
if (filterChain != null)
filterChain.release();
} catch (Throwable e) {
wrapper.getLogger().error(sm.getString("standardWrapper.releaseFilters",
wrapper.getName()), e);
// FIXME: Exception handling needs to be simpiler to what is in the StandardWrapperValue
}
// Deallocate the allocated servlet instance
try {
if (servlet != null) {
wrapper.deallocate(servlet);
}
} catch (ServletException e) {
wrapper.getLogger().error(sm.getString("applicationDispatcher.deallocateException",
wrapper.getName()), e);
servletException = e;
} catch (Throwable e) {
wrapper.getLogger().error(sm.getString("applicationDispatcher.deallocateException",
wrapper.getName()), e);
servletException = new ServletException
(sm.getString("applicationDispatcher.deallocateException",
wrapper.getName()), e);
}
// Reset the old context class loader
if (oldCCL != null)
Thread.currentThread().setContextClassLoader(oldCCL);
// Unwrap request/response if needed
// See Bugzilla 30949
unwrapRequest(state);
unwrapResponse(state);
// Recycle request if necessary (also BZ 30949)
recycleRequestWrapper(state);
// Rethrow an exception if one was thrown by the invoked servlet
if (ioException != null)
throw ioException;
if (servletException != null)
throw servletException;
if (runtimeException != null)
throw runtimeException;
}
/**
* Unwrap the request if we have wrapped it.
*/
private void unwrapRequest(State state) {
if (state.wrapRequest == null)
return;
ServletRequest previous = null;
ServletRequest current = state.outerRequest;
while (current != null) {
// If we run into the container request we are done
if ((current instanceof Request)
|| (current instanceof RequestFacade))
break;
// Remove the current request if it is our wrapper
if (current == state.wrapRequest) {
ServletRequest next =
((ServletRequestWrapper) current).getRequest();
if (previous == null)
state.outerRequest = next;
else
((ServletRequestWrapper) previous).setRequest(next);
break;
}
// Advance to the next request in the chain
previous = current;
current = ((ServletRequestWrapper) current).getRequest();
}
}
/**
* Unwrap the response if we have wrapped it.
*/
private void unwrapResponse(State state) {
if (state.wrapResponse == null)
return;
ServletResponse previous = null;
ServletResponse current = state.outerResponse;
while (current != null) {
// If we run into the container response we are done
if ((current instanceof Response)
|| (current instanceof ResponseFacade))
break;
// Remove the current response if it is our wrapper
if (current == state.wrapResponse) {
ServletResponse next =
((ServletResponseWrapper) current).getResponse();
if (previous == null)
state.outerResponse = next;
else
((ServletResponseWrapper) previous).setResponse(next);
break;
}
// Advance to the next response in the chain
previous = current;
current = ((ServletResponseWrapper) current).getResponse();
}
}
/**
* Create and return a request wrapper that has been inserted in the
* appropriate spot in the request chain.
*/
private ServletRequest wrapRequest(State state) {
// Locate the request we should insert in front of
ServletRequest previous = null;
ServletRequest current = state.outerRequest;
while (current != null) {
if(state.hrequest == null && (current instanceof HttpServletRequest))
state.hrequest = (HttpServletRequest)current;
if ("org.apache.catalina.servlets.InvokerHttpRequest".
equals(current.getClass().getName()))
break; // KLUDGE - Make nested RD.forward() using invoker work
if (!(current instanceof ServletRequestWrapper))
break;
if (current instanceof ApplicationHttpRequest)
break;
if (current instanceof ApplicationRequest)
break;
if (current instanceof Request)
break;
previous = current;
current = ((ServletRequestWrapper) current).getRequest();
}
// Instantiate a new wrapper at this point and insert it in the chain
ServletRequest wrapper = null;
if ((current instanceof ApplicationHttpRequest) ||
(current instanceof Request) ||
(current instanceof HttpServletRequest)) {
// Compute a crossContext flag
HttpServletRequest hcurrent = (HttpServletRequest) current;
boolean crossContext = false;
if ((state.outerRequest instanceof ApplicationHttpRequest) ||
(state.outerRequest instanceof Request) ||
(state.outerRequest instanceof HttpServletRequest)) {
HttpServletRequest houterRequest =
(HttpServletRequest) state.outerRequest;
Object contextPath = houterRequest.getAttribute
(Globals.INCLUDE_CONTEXT_PATH_ATTR);
if (contextPath == null) {
// Forward
contextPath = houterRequest.getContextPath();
}
crossContext = !(context.getPath().equals(contextPath));
}
wrapper = new ApplicationHttpRequest
(hcurrent, context, crossContext);
} else {
wrapper = new ApplicationRequest(current);
}
if (previous == null)
state.outerRequest = wrapper;
else
((ServletRequestWrapper) previous).setRequest(wrapper);
state.wrapRequest = wrapper;
return (wrapper);
}
/**
* Create and return a response wrapper that has been inserted in the
* appropriate spot in the response chain.
*/
private ServletResponse wrapResponse(State state) {
// Locate the response we should insert in front of
ServletResponse previous = null;
ServletResponse current = state.outerResponse;
while (current != null) {
if(state.hresponse == null && (current instanceof HttpServletResponse)) {
state.hresponse = (HttpServletResponse)current;
if(!state.including) // Forward only needs hresponse
return null;
}
if (!(current instanceof ServletResponseWrapper))
break;
if (current instanceof ApplicationHttpResponse)
break;
if (current instanceof ApplicationResponse)
break;
if (current instanceof Response)
break;
previous = current;
current = ((ServletResponseWrapper) current).getResponse();
}
// Instantiate a new wrapper at this point and insert it in the chain
ServletResponse wrapper = null;
if ((current instanceof ApplicationHttpResponse) ||
(current instanceof Response) ||
(current instanceof HttpServletResponse))
wrapper =
new ApplicationHttpResponse((HttpServletResponse) current,
state.including);
else
wrapper = new ApplicationResponse(current, state.including);
if (previous == null)
state.outerResponse = wrapper;
else
((ServletResponseWrapper) previous).setResponse(wrapper);
state.wrapResponse = wrapper;
return (wrapper);
}
private void checkSameObjects(ServletRequest appRequest,
ServletResponse appResponse) throws ServletException {
ServletRequest originalRequest =
ApplicationFilterChain.getLastServicedRequest();
ServletResponse originalResponse =
ApplicationFilterChain.getLastServicedResponse();
// Some forwards, eg from valves will not set original values
if (originalRequest == null || originalResponse == null) {
return;
}
boolean same = false;
ServletRequest dispatchedRequest = appRequest;
//find the request that was passed into the service method
while (originalRequest instanceof ServletRequestWrapper &&
((ServletRequestWrapper) originalRequest).getRequest()!=null ) {
originalRequest =
((ServletRequestWrapper) originalRequest).getRequest();
}
//compare with the dispatched request
while (!same) {
if (originalRequest.equals(dispatchedRequest)) {
same = true;
}
if (!same && dispatchedRequest instanceof ServletRequestWrapper) {
dispatchedRequest =
((ServletRequestWrapper) dispatchedRequest).getRequest();
} else {
break;
}
}
if (!same) {
throw new ServletException(sm.getString(
"applicationDispatcher.specViolation.request"));
}
same = false;
ServletResponse dispatchedResponse = appResponse;
//find the response that was passed into the service method
while (originalResponse instanceof ServletResponseWrapper &&
((ServletResponseWrapper) originalResponse).getResponse() !=
null ) {
originalResponse =
((ServletResponseWrapper) originalResponse).getResponse();
}
//compare with the dispatched response
while (!same) {
if (originalResponse.equals(dispatchedResponse)) {
same = true;
}
if (!same && dispatchedResponse instanceof ServletResponseWrapper) {
dispatchedResponse =
((ServletResponseWrapper) dispatchedResponse).getResponse();
} else {
break;
}
}
if (!same) {
throw new ServletException(sm.getString(
"applicationDispatcher.specViolation.response"));
}
}
private void recycleRequestWrapper(State state) {
if (state.wrapRequest instanceof ApplicationHttpRequest) {
((ApplicationHttpRequest) state.wrapRequest).recycle(); }
}
}
The table below shows all metrics for ApplicationDispatcher.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 97.00 | Number of blocks | |
| BLOCK_COMMENT | 16.00 | Number of block comment lines | |
| COMMENTS | 222.00 | Comment lines | |
| COMMENT_DENSITY | 0.42 | Comment density | |
| COMPARISONS | 52.00 | Number of comparison operators | |
| CYCLOMATIC | 129.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 35.00 | Comments in declarations | |
| DOC_COMMENT | 151.00 | Number of javadoc comment lines | |
| ELOC | 529.00 | Effective lines of code | |
| EXEC_COMMENTS | 46.00 | Comments in executable code | |
| EXITS | 80.00 | Procedure exits | |
| FUNCTIONS | 19.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 92.85 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 90.00 | Interface complexity | |
| JAVA0001 | 0.00 | JAVA0001 Package name does not contain only lower case letters | |
| JAVA0002 | 0.00 | JAVA0002 Package name does not begin with a top level domain name or country code | |
| JAVA0003 | 0.00 | JAVA0003 Minimize use of on-demand (.*) imports | |
| JAVA0004 | 0.00 | JAVA0004 Unnecessary import from java.lang | |
| JAVA0005 | 0.00 | JAVA0005 Imports not in specified order | |
| JAVA0006 | 0.00 | JAVA0006 Empty finally block | |
| JAVA0007 | 0.00 | JAVA0007 Should not declare public field | |
| JAVA0008 | 0.00 | JAVA0008 Empty catch block | |
| JAVA0009 | 0.00 | JAVA0009 Protected member in final class | |
| JAVA0010 | 0.00 | JAVA0010 Non-instantiable class does not contain a non-private static member | |
| JAVA0011 | 0.00 | JAVA0011 Abstract class does not contain an abstract method | |
| JAVA0012 | 0.00 | JAVA0012 Non-constructor method with same name as declaring class | |
| JAVA0013 | 0.00 | JAVA0013 Non-blank final field is not static | |
| JAVA0014 | 0.00 | JAVA0014 Class with only static members has non-private constructor | |
| JAVA0015 | 0.00 | JAVA0015 Package class contains public nested type | |
| JAVA0016 | 0.00 | JAVA0016 Abstract class contains public constructor | |
| JAVA0017 | 0.00 | JAVA0017 Class name does not have required form | |
| JAVA0018 | 0.00 | JAVA0018 Method name does not have required form | |
| JAVA0019 | 0.00 | JAVA0019 Interface name does not have required form | |
| JAVA0020 | 0.00 | JAVA0020 Field name does not have required form | |
| JAVA0021 | 0.00 | JAVA0021 Interface method name does not have required form | |
| JAVA0022 | 0.00 | JAVA0022 Static final field name does not have required form | |
| JAVA0023 | 0.00 | JAVA0023 Empty finalize method | |
| JAVA0024 | 0.00 | JAVA0024 Empty class | |
| JAVA0025 | 0.00 | JAVA0025 Method override is empty | |
| JAVA0026 | 0.00 | JAVA0026 Finalize method with parameters | |
| JAVA0029 | 0.00 | JAVA0029 Private method not used | |
| JAVA0030 | 0.00 | JAVA0030 Private field not used | |
| JAVA0031 | 0.00 | JAVA0031 Case statement not properly closed | |
| JAVA0032 | 0.00 | JAVA0032 Switch statement missing default | |
| JAVA0033 | 0.00 | JAVA0033 default: not last case in switch statement | |
| JAVA0034 | 43.00 | JAVA0034 Missing braces in if statement | |
| JAVA0035 | 0.00 | JAVA0035 Missing braces in for statement | |
| JAVA0036 | 0.00 | JAVA0036 Missing braces in while statement | |
| JAVA0038 | 0.00 | JAVA0038 Non-case label in switch statement | |
| JAVA0039 | 0.00 | JAVA0039 Break statement with label | |
| JAVA0040 | 0.00 | JAVA0040 Switch statement contains N cases (maximum: M) | |
| JAVA0041 | 0.00 | JAVA0041 Nested synchronized block | |
| JAVA0042 | 0.00 | JAVA0042 Empty synchronized statement | |
| JAVA0043 | 1.00 | JAVA0043 Inner class does not use outer class | |
| JAVA0044 | 0.00 | JAVA0044 Serializable class with no instance variables | |
| JAVA0045 | 0.00 | JAVA0045 Serializable class with only transient fields | |
| JAVA0046 | 0.00 | JAVA0046 Name of class not derived from Exception ends with 'Exception' | |
| JAVA0047 | 0.00 | JAVA0047 Serializable class derives from invalid base class | |
| JAVA0048 | 0.00 | JAVA0048 Name of class derived from Exception does not end with 'Exception' | |
| JAVA0049 | 0.00 | JAVA0049 Nested block at depth N (maximum: M) | |
| JAVA0050 | 0.00 | JAVA0050 Class derives from java.lang.Error | |
| JAVA0051 | 0.00 | JAVA0051 Class derives from java.lang.RuntimeException | |
| JAVA0052 | 0.00 | JAVA0052 Class derives from java.lang.Throwable | |
| JAVA0053 | 0.00 | JAVA0053 Unused label | |
| JAVA0054 | 0.00 | JAVA0054 Inheritance depth N exceeds maximum M | |
| JAVA0055 | 0.00 | JAVA0055 Class should be interface | |
| JAVA0056 | 0.00 | JAVA0056 Unnecessary abstract modifier for interface or annotation | |
| JAVA0057 | 0.00 | JAVA0057 Unnecessary default constructor | |
| JAVA0058 | 1.00 | JAVA0058 Constructor calls super() | |
| JAVA0059 | 0.00 | JAVA0059 Method override only calls super() | |
| JAVA0061 | 0.00 | JAVA0061 Inaccessible member in anonymous class | |
| JAVA0062 | 0.00 | JAVA0062 Public class missing public member or protected constructor | |
| JAVA0063 | 0.00 | JAVA0063 Identifier name should not contain '$' | |
| JAVA0064 | 0.00 | JAVA0064 N variations of identifier name (maximum: M) | |
| JAVA0065 | 0.00 | JAVA0065 Unnecessary final modifier for method in final class | |
| JAVA0066 | 0.00 | JAVA0066 Unnecessary modifier for interface nested type | |
| JAVA0067 | 0.00 | JAVA0067 Array descriptor on identifier name | |
| JAVA0068 | 0.00 | JAVA0068 Modifiers not declared in recommended order | |
| JAVA0071 | 0.00 | JAVA0071 Strings compared with == | |
| JAVA0073 | 0.00 | JAVA0073 Integer division in floating-point context | |
| JAVA0074 | 0.00 | JAVA0074 Use of Object.notify() | |
| JAVA0075 | 0.00 | JAVA0075 Method parameter hides field | |
| JAVA0076 | 0.00 | JAVA0076 Use of magic number | |
| JAVA0077 | 0.00 | JAVA0077 Private field not used in declaring class | |
| JAVA0078 | 0.00 | JAVA0078 Floating point values compared with == | |
| JAVA0079 | 0.00 | JAVA0079 Use of instance to reference static member | |
| JAVA0080 | 0.00 | JAVA0080 Import declaration not used | |
| JAVA0081 | 0.00 | JAVA0081 Boolean literal in comparison | |
| JAVA0082 | 0.00 | JAVA0082 Unnecessary widening cast | |
| JAVA0083 | 0.00 | JAVA0083 Unnecessary instanceof test | |
| JAVA0084 | 0.00 | JAVA0084 Should use compound assignment operator | |
| JAVA0085 | 0.00 | JAVA0085 Use of sun.* class | |
| JAVA0087 | 0.00 | JAVA0087 Use of Thread.sleep() | |
| JAVA0089 | 0.00 | JAVA0089 Use of restricted package | |
| JAVA0092 | 0.00 | JAVA0092 Use of restricted type | |
| JAVA0093 | 0.00 | JAVA0093 Redundant assignment | |
| JAVA0094 | 0.00 | JAVA0094 Field hides a superclass field | |
| JAVA0095 | 0.00 | JAVA0095 Uninitialized private field | |
| JAVA0096 | 0.00 | JAVA0096 Field in nested class hides outer field | |
| JAVA0098 | 0.00 | JAVA0098 Minimize use of implicit field initializers | |
| JAVA0100 | 0.00 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| JAVA0101 | 0.00 | JAVA0101 Unnecessary modifier for field in interface | |
| JAVA0102 | 0.00 | JAVA0102 Last statement in finalize() not super.finalize() | |
| JAVA0103 | 0.00 | JAVA0103 Explicit call to finalize() | |
| JAVA0104 | 0.00 | JAVA0104 finalize() only calls super.finalize() | |
| JAVA0105 | 0.00 | JAVA0105 Duplicate import declaration | |
| JAVA0106 | 0.00 | JAVA0106 Unnecessary import from current package | |
| JAVA0108 | 5.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 0.00 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0110 | 3.00 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0111 | 0.00 | JAVA0111 Incorrect javadoc: @return tag for void method | |
| JAVA0112 | 0.00 | JAVA0112 Incorrect javadoc: no exception 'exception' in throws | |
| JAVA0113 | 0.00 | JAVA0113 Incorrect javadoc: no @author tag | |
| JAVA0114 | 0.00 | JAVA0114 Incorrect javadoc: no @version tag | |
| JAVA0115 | 0.00 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0116 | 0.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 0.00 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0118 | 0.00 | JAVA0118 Missing javadoc: type 'type' | |
| JAVA0119 | 0.00 | JAVA0119 Control variable changed within body of for loop | |
| JAVA0123 | 0.00 | JAVA0123 Use all three components of for loop | |
| JAVA0125 | 0.00 | JAVA0125 Continue statement with label | |
| JAVA0126 | 0.00 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0128 | 1.00 | JAVA0128 Public constructor in non-public class | |
| JAVA0130 | 5.00 | JAVA0130 Non-static method does not use instance fields | |
| JAVA0131 | 0.00 | JAVA0131 Compatible method does not override base | |
| JAVA0132 | 0.00 | JAVA0132 Method overload with compatible signature | |
| JAVA0133 | 0.00 | JAVA0133 Non-synchronized method overrides synchronized method | |
| JAVA0135 | 0.00 | JAVA0135 Only one of Object.equals and Object.hashCode defined: missing 'method' | |
| JAVA0136 | 0.00 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0137 | 0.00 | JAVA0137 Non-abstract class missing constructor | |
| JAVA0138 | 1.00 | JAVA0138 N parameters defined for method (maximum: M) | |
| JAVA0139 | 0.00 | JAVA0139 Definition of main other than public static void main(java.lang.String[]) | |
| JAVA0141 | 0.00 | JAVA0141 Unnecessary modifier for method in interface | |
| JAVA0143 | 0.00 | JAVA0143 Synchronized method | |
| JAVA0144 | 0.00 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0145 | 0.00 | JAVA0145 Tab character used in source file | |
| JAVA0150 | 0.00 | JAVA0150 java.lang.Error (or subclass) thrown | |
| JAVA0153 | 0.00 | JAVA0153 Inefficient conversion of integer to string | |
| JAVA0159 | 0.00 | JAVA0159 Inefficient conversion of string to integer | |
| JAVA0160 | 0.00 | JAVA0160 Method does not throw specified exception | |
| JAVA0161 | 0.00 | JAVA0161 Conditional wait() not in loop | |
| JAVA0163 | 3.00 | JAVA0163 Empty statement | |
| JAVA0165 | 0.00 | JAVA0165 Conflicting return statement in finally block | |
| JAVA0166 | 4.00 | JAVA0166 Generic exception caught | |
| JAVA0167 | 0.00 | JAVA0167 ThreadDeath not rethrown | |
| JAVA0169 | 1.00 | JAVA0169 Unnecessary catch block: exception 'exception' | |
| JAVA0170 | 3.00 | JAVA0170 Caught exception not derived from java.lang.Exception | |
| JAVA0171 | 0.00 | JAVA0171 Unused local variable | |
| JAVA0173 | 0.00 | JAVA0173 Unused method parameter | |
| JAVA0174 | 0.00 | JAVA0174 Assigned local variable never used | |
| JAVA0175 | 0.00 | JAVA0175 Successive assignment to variable | |
| JAVA0176 | 0.00 | JAVA0176 Local variable name does not have required form | |
| JAVA0177 | 0.00 | JAVA0177 Variable declaration missing initializer | |
| JAVA0179 | 2.00 | JAVA0179 Local variable hides visible field | |
| JAVA0233 | 0.00 | JAVA0233 Definition of serialVersionUID other than 'private static final long serialVersionUID' | |
| JAVA0234 | 0.00 | JAVA0234 Class is Serializable but does not define serialVersionUID | |
| JAVA0235 | 0.00 | JAVA0235 Class defines serialVersionUID but does not implement Serializable | |
| JAVA0236 | 0.00 | JAVA0236 Attempt to clone an object which does not implement Cloneable | |
| JAVA0237 | 0.00 | JAVA0237 Class implements Cloneable but does not have public clone method | |
| JAVA0238 | 0.00 | JAVA0238 Clone method does not call super.clone() | |
| JAVA0239 | 0.00 | JAVA0239 Class declares 'readObject' or 'writeObject' but does not implement Serializable | |
| JAVA0240 | 0.00 | JAVA0240 Serializable class which declares readObject or writeObject but not both | |
| JAVA0241 | 0.00 | JAVA0241 'readObject' or 'writeObject' should be declared private in Serializable class | |
| JAVA0242 | 0.00 | JAVA0242 Transient field in non-Serializable class | |
| JAVA0243 | 0.00 | JAVA0243 'readResolve' or 'writeReplace' should be declared private or protected | |
| JAVA0244 | 0.00 | JAVA0244 Field or method name in subclass differs only by case from inherited field or method | |
| JAVA0245 | 0.00 | JAVA0245 JUnit TestCase with non-trivial constructor | |
| JAVA0246 | 0.00 | JAVA0246 JUnit assertXXX statement missing message parameter | |
| JAVA0247 | 0.00 | JAVA0247 JUnit 'setUp()' and 'tearDown()' should call super method | |
| JAVA0248 | 0.00 | JAVA0248 JUnit method 'setUp' or 'tearDown' with incorrect signature | |
| JAVA0249 | 0.00 | JAVA0249 JUnit TestCase 'suite()' should be declared static | |
| JAVA0250 | 0.00 | JAVA0250 JUnit TestCase declares testXXX method with incorrect signature | |
| JAVA0251 | 0.00 | JAVA0251 Use '%n' for line breaks in printf/format for platform independence | |
| JAVA0252 | 0.00 | JAVA0252 'enum' is a Java 1.5 reserved word | |
| JAVA0253 | 0.00 | JAVA0253 Not all enum constants consumed in switch statement | |
| JAVA0254 | 0.00 | JAVA0254 Use enhanced for loop construct instead of Iterator | |
| JAVA0255 | 0.00 | JAVA0255 Result of method invocation not used | |
| JAVA0256 | 0.00 | JAVA0256 Assignment of external collection/array to field | |
| JAVA0257 | 0.00 | JAVA0257 Use of 'Constant Interface' anti-pattern | |
| JAVA0258 | 0.00 | JAVA0258 Implement Iterable for foreach compatibility | |
| JAVA0259 | 0.00 | JAVA0259 Return of collection/array field | |
| JAVA0260 | 0.00 | JAVA0260 Use 'enum' instead of Enumerated Type pattern | |
| JAVA0261 | 0.00 | JAVA0261 Use specialized Enum collection types | |
| JAVA0262 | 0.00 | JAVA0262 Use of char in integer context | |
| JAVA0263 | 0.00 | JAVA0263 Long literal ends with 'l' instead of 'L' | |
| JAVA0264 | 0.00 | JAVA0264 Integer math in long context - check for overflow | |
| JAVA0265 | 0.00 | JAVA0265 Use of Throwable.printStackTrace() | |
| JAVA0266 | 0.00 | JAVA0266 Use of System.out | |
| JAVA0267 | 0.00 | JAVA0267 Use of System.err | |
| JAVA0269 | 0.00 | JAVA0269 Contents of StringBuffer never used | |
| JAVA0270 | 0.00 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
| JAVA0271 | 0.00 | JAVA0271 Minimize use of on-demand (.*) static imports | |
| JAVA0272 | 0.00 | JAVA0272 Thread.run() called | |
| JAVA0273 | 0.00 | JAVA0273 Non-final derivative of Thread calls start() in constructor | |
| JAVA0274 | 0.00 | JAVA0274 Serializable class has a synchronized readObject() | |
| JAVA0275 | 0.00 | JAVA0275 Serializable class has a synchronized writeObject() and no other synchronized methods | |
| JAVA0276 | 0.00 | JAVA0276 Unnecessary use of String constructor | |
| JAVA0277 | 0.00 | JAVA0277 Iterator.next() implementation does not throw NoSuchElementException | |
| JAVA0278 | 0.00 | JAVA0278 Unnecessary use of Boolean constructor | |
| JAVA0279 | 0.00 | JAVA0279 Serialization method readObject or readObjectNoData calls an overridable method | |
| JAVA0280 | 0.00 | JAVA0280 IllegalMonitorStateException caught | |
| JAVA0281 | 0.00 | JAVA0281 Iterator.next() not called in loop | |
| JAVA0282 | 0.00 | JAVA0282 Call to Iterator.next() in loop which does not test Iterator.hasNext() | |
| JAVA0283 | 0.00 | JAVA0283 Control variable not updated in loop body | |
| JAVA0284 | 0.00 | JAVA0284 Explicit garbage collection | |
| JAVA0285 | 0.00 | JAVA0285 Dereference of potentially null variable | |
| JAVA0286 | 0.00 | JAVA0286 Dereference of null variable | |
| JAVA0287 | 0.00 | JAVA0287 Unnecessary null check | |
| JAVA0288 | 0.00 | JAVA0288 Inconsistent null check | |
| LINES | 979.00 | Number of lines in the source file | |
| LINE_COMMENT | 55.00 | Number of line comments | |
| LOC | 610.00 | Lines of code | |
| LOGICAL_LINES | 291.00 | Number of statements | |
| LOOPS | 8.00 | Number of loops | |
| NEST_DEPTH | 4.00 | Maximum nesting depth | |
| OPERANDS | 1321.00 | Number of operands | |
| OPERATORS | 2411.00 | Number of operators | |
| PARAMS | 34.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 3732.00 | Halstead program length | |
| PROGRAM_VOCAB | 357.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 56.00 | Number of return points from functions | |
| SIZE | 37040.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 313.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 44.00 | Number of unique operators | |
| WHITESPACE | 147.00 | Number of whitespace lines | |