Form.java
| Index Score | ||
|---|---|---|
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org.apache.tapestry5.corelib.components |
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Apache Tapestry 5 |
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 |  |
| JAVA0095 | JAVA0095 Uninitialized private field | |
| LINE_COMMENT | Number of line comments | |
| DECL_COMMENTS | Comments in declarations | |
| JAVA0179 | JAVA0179 Local variable hides visible field | |
| EXITS | Procedure exits | |
| SIZE | Size of the file in bytes | |
| UNIQUE_OPERANDS | Number of unique operands | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| WHITESPACE | Number of whitespace lines | |
| PROGRAM_VOLUME | Halstead program volume | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0030 | JAVA0030 Private field not used | |
| EXEC_COMMENTS | Comments in executable code | |
| JAVA0287 | JAVA0287 Unnecessary null check | |
| JAVA0100 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| LOOPS | Number of loops | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| CYCLOMATIC | Cyclomatic complexity | |
| BLOCKS | Number of blocks | |
| COMPARISONS | Number of comparison operators | |
| JAVA0075 | JAVA0075 Method parameter hides field | |
| UNIQUE_OPERATORS | Number of unique operators | |
| PARAMS | Number of formal parameter declarations | |
| LINES | Number of lines in the source file | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
// Copyright 2006, 2007, 2008 The Apache Software Foundation
//
// Licensed 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.tapestry5.corelib.components;
import org.apache.tapestry5.*;
import org.apache.tapestry5.annotations.*;
import org.apache.tapestry5.corelib.internal.ComponentActionSink;
import org.apache.tapestry5.corelib.internal.FormSupportImpl;
import org.apache.tapestry5.corelib.mixins.RenderInformals;
import org.apache.tapestry5.dom.Element;
import org.apache.tapestry5.internal.services.ClientBehaviorSupport;
import org.apache.tapestry5.internal.services.ComponentInvocationMap;
import org.apache.tapestry5.internal.services.ComponentResultProcessorWrapper;
import org.apache.tapestry5.internal.services.HeartbeatImpl;
import org.apache.tapestry5.internal.util.Base64ObjectInputStream;
import org.apache.tapestry5.ioc.Location;
import org.apache.tapestry5.ioc.Messages;
import org.apache.tapestry5.ioc.annotations.Inject;
import org.apache.tapestry5.ioc.internal.util.InternalUtils;
import org.apache.tapestry5.ioc.internal.util.TapestryException;
import org.apache.tapestry5.runtime.Component;
import org.apache.tapestry5.services.*;
import org.slf4j.Logger;
import java.io.EOFException;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.util.List;
/**
* An HTML form, which will enclose other components to render out the various types of fields.
* <p/>
* A Form emits many notification events. When it renders, it fires a {@link #PREPARE_FOR_RENDER} notification, followed
* by a {@link #PREPARE} notification.
* <p/>
* When the form is submitted, the component emits several notifications: first a {@link #PREPARE_FOR_SUBMIT}, then a
* {@link #PREPARE}: these allow the page to update its state as necessary to prepare for the form submission, then
* (after components enclosed by the form have operated), a {@link #VALIDATE_FORM}event is emitted, to allow for
* cross-form validation. After that, either a {@link #SUCCESS} OR {@link #FAILURE} event (depending on whether the
* {@link ValidationTracker} has recorded any errors). Lastly, a {@link #SUBMIT} event, for any listeners that care only
* about form submission, regardless of success or failure.
* <p/>
* For all of these notifications, the event context is derived from the <strong>context</strong> parameter. This
* context is encoded into the form's action URI (the parameter is not read when the form is submitted, instead the
* values encoded into the form are used).
*/
public class Form implements ClientElement, FormValidationControl
{
/**
* Invoked before {@link #PREPARE} when rendering out the form.
*/
public static final String PREPARE_FOR_RENDER = "prepareForRender";
/**
* Invoked before {@link #PREPARE} when the form is submitted.
*/
public static final String PREPARE_FOR_SUBMIT = "prepareForSubmit";
/**
* Invoked to let the containing component(s) prepare for the form rendering or the form submission.
*/
public static final String PREPARE = "prepare";
/**
* Event type for a notification after the form has submitted. This event notification occurs on any form submit,
* without respect to "success" or "failure".
*/
public static final String SUBMIT = "submit";
/**
* Event type for a notification to perform validation of submitted data. This allows a listener to perform
* cross-field validation. This occurs before the {@link #SUCCESS} or {@link #FAILURE} notification.
*/
public static final String VALIDATE_FORM = "validateForm";
/**
* Event type for a notification after the form has submitted, when there are no errors in the validation tracker.
* This occurs before the {@link #SUBMIT} event.
*/
public static final String SUCCESS = "success";
/**
* Event type for a notification after the form has been submitted, when there are errors in the validation tracker.
* This occurs before the {@link #SUBMIT} event.
*/
public static final String FAILURE = "failure";
/**
* Query parameter name storing form data (the serialized commands needed to process a form submission).
*/
public static final String FORM_DATA = "t:formdata";
/**
* The context for the link (optional parameter). This list of values will be converted into strings and included in
* the URI. The strings will be coerced back to whatever their values are and made available to event handler
* methods.
*/
@Parameter
private List<?> context;
/**
* The object which will record user input and validation errors. The object must be persistent between requests
* (since the form submission and validation occurs in an component event request and the subsequent render occurs
* in a render request). The default is a persistent property of the Form component and this is sufficient for
* nearly all purposes (except when a Form is rendered inside a loop).
*/
@Parameter("defaultTracker")
private ValidationTracker tracker;
/**
* If true (the default) then client validation is enabled for the form, and the default set of JavaScript libraries
* (Prototype, Scriptaculous and the Tapestry library) will be added to the rendered page, and the form will
* register itself for validation. This may be turned off when client validation is not desired; for example, when
* many validations are used that do not operate on the client side at all.
*/
@Parameter("true")
private boolean clientValidation;
/**
* Binding the zone parameter will cause the form submission to be handled as an Ajax request that updates the
* indicated zone. Often a Form will update the same zone that contains it.
*/
@Parameter(defaultPrefix = BindingConstants.LITERAL)
private String zone;
@Inject
private Logger logger;
@Inject
private Environment environment;
@Inject
private ComponentResources resources;
@Inject
private Messages messages;
@Environmental
private RenderSupport renderSupport;
@Inject
private Request request;
@Inject
private ComponentSource source;
@Persist(PersistenceConstants.FLASH)
private ValidationTracker defaultTracker;
@Inject
private ComponentInvocationMap componentInvocationMap;
private FormSupportImpl formSupport;
private Element form;
private Element div;
// Collects a stream of component actions. Each action goes in as a UTF string (the component
// component id), followed by a ComponentAction
private ComponentActionSink actionSink;
@SuppressWarnings("unused")
@Mixin
private RenderInformals renderInformals;
/**
* Set up via the traditional or Ajax component event request handler
*/
@Environmental
private ComponentEventResultProcessor componentEventResultProcessor;
@Environmental
private ClientBehaviorSupport clientBehaviorSupport;
private String name;
public ValidationTracker getDefaultTracker()
{
if (defaultTracker == null) defaultTracker = new ValidationTrackerImpl();
return defaultTracker;
}
public void setDefaultTracker(ValidationTracker defaultTracker)
{
this.defaultTracker = defaultTracker;
}
void beginRender(MarkupWriter writer)
{
actionSink = new ComponentActionSink(logger);
name = renderSupport.allocateClientId(resources);
formSupport = new FormSupportImpl(name, actionSink, clientBehaviorSupport, clientValidation);
if (zone != null) clientBehaviorSupport.linkZone(name, zone);
// TODO: Forms should not allow to nest. Perhaps a set() method instead of a push() method
// for this kind of check?
environment.push(FormSupport.class, formSupport);
environment.push(ValidationTracker.class, tracker);
// Now that the environment is setup, inform the component or other listeners that the form
// is about to render.
Object[] contextArray = context == null ? new Object[0] : context.toArray();
resources.triggerEvent(PREPARE_FOR_RENDER, contextArray, null);
resources.triggerEvent(PREPARE, contextArray, null);
Link link = resources.createFormEventLink(EventConstants.ACTION, contextArray);
// Save the form element for later, in case we want to write an encoding type attribute.
form = writer.element("form",
"name", name,
"id", name,
"method", "post",
"action", link);
componentInvocationMap.store(form, link);
resources.renderInformalParameters(writer);
div = writer.element("div", "class", CSSClassConstants.INVISIBLE);
for (String parameterName : link.getParameterNames())
{
String value = link.getParameterValue(parameterName);
writer.element("input",
"type", "hidden",
"name", parameterName,
"value", value);
writer.end();
}
writer.end(); // div
environment.peek(Heartbeat.class).begin();
}
void afterRender(MarkupWriter writer)
{
environment.peek(Heartbeat.class).end();
formSupport.executeDeferred();
String encodingType = formSupport.getEncodingType();
if (encodingType != null) form.forceAttributes("enctype", encodingType);
writer.end(); // form
div.element("input",
"type", "hidden",
"name", FORM_DATA,
"value", actionSink.toBase64());
}
void cleanupRender()
{
environment.pop(FormSupport.class);
formSupport = null;
// This forces a change to the tracker, which is nice because its internal state has
// changed.
tracker = environment.pop(ValidationTracker.class);
}
@SuppressWarnings({"unchecked", "InfiniteLoopStatement"})
@Log
Object onAction(EventContext context) throws IOException
{
tracker.clear();
formSupport = new FormSupportImpl();
environment.push(ValidationTracker.class, tracker);
environment.push(FormSupport.class, formSupport);
Heartbeat heartbeat = new HeartbeatImpl();
environment.push(Heartbeat.class, heartbeat);
heartbeat.begin();
try
{
ComponentResultProcessorWrapper callback = new ComponentResultProcessorWrapper(
componentEventResultProcessor);
resources.triggerContextEvent(PREPARE_FOR_SUBMIT, context, callback);
if (callback.isAborted()) return true;
resources.triggerContextEvent(PREPARE, context, callback);
if (callback.isAborted()) return true;
executeStoredActions();
heartbeat.end();
ValidationTracker tracker = environment.peek(ValidationTracker.class);
// Let the listeners peform any final validations
// Update through the parameter because the tracker has almost certainly changed
// internal state.
this.tracker = tracker;
formSupport.executeDeferred();
resources.triggerContextEvent(VALIDATE_FORM, context, callback);
if (callback.isAborted()) return true;
// Let the listeners know about overall success or failure. Most listeners fall into
// one of those two camps.
// If the tracker has no errors, then clear it of any input values
// as well, so that the next page render will be "clean" and show
// true persistent data, not value from the previous form submission.
if (!this.tracker.getHasErrors()) this.tracker.clear();
resources.triggerContextEvent(tracker.getHasErrors() ? FAILURE : SUCCESS, context, callback);
// Lastly, tell anyone whose interested that the form is completely submitted.
if (callback.isAborted()) return true;
resources.triggerContextEvent(SUBMIT, context, callback);
return callback.isAborted();
}
finally
{
environment.pop(Heartbeat.class);
environment.pop(FormSupport.class);
}
}
/**
* Pulls the stored actions out of the request, converts them from MIME stream back to object stream and then
* objects, and executes them.
*/
private void executeStoredActions()
{
String[] values = request.getParameters(FORM_DATA);
if (!request.getMethod().equals("POST") || values == null)
throw new RuntimeException(messages.format("invalid-request", FORM_DATA));
// Due to Ajax (FormInjector) there may be multiple values here, so handle each one individually.
for (String actionsBase64 : values)
{
if (logger.isDebugEnabled())
logger.debug(String.format("Processing actions: %s", actionsBase64));
ObjectInputStream ois = null;
Component component = null;
try
{
ois = new Base64ObjectInputStream(actionsBase64);
while (true)
{
String componentId = ois.readUTF();
ComponentAction action = (ComponentAction) ois.readObject();
component = source.getComponent(componentId);
if (logger.isDebugEnabled())
logger.debug(String.format("Processing: %s %s", componentId, action));
action.execute(component);
component = null;
}
}
catch (EOFException ex)
{
// Expected
}
catch (Exception ex)
{
Location location = component == null ? null : component.getComponentResources().getLocation();
throw new TapestryException(ex.getMessage(), location, ex);
}
finally
{
InternalUtils.close(ois);
}
}
}
public void recordError(String errorMessage)
{
ValidationTracker tracker = this.tracker;
tracker.recordError(errorMessage);
this.tracker = tracker;
}
public void recordError(Field field, String errorMessage)
{
ValidationTracker tracker = this.tracker;
tracker.recordError(field, errorMessage);
this.tracker = tracker;
}
public boolean getHasErrors()
{
return tracker.getHasErrors();
}
public boolean isValid()
{
return !tracker.getHasErrors();
}
// For testing:
void setTracker(ValidationTracker tracker)
{
this.tracker = tracker;
}
public void clearErrors()
{
tracker.clear();
}
/**
* Forms use the same value for their name and their id attribute.
*/
public String getClientId()
{
return name;
}
}
The table below shows all metrics for Form.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 23.00 | Number of blocks | |
| BLOCK_COMMENT | 0.00 | Number of block comment lines | |
| COMMENTS | 110.00 | Comment lines | |
| COMMENT_DENSITY | 0.57 | Comment density | |
| COMPARISONS | 17.00 | Number of comparison operators | |
| CYCLOMATIC | 32.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 31.00 | Comments in declarations | |
| DOC_COMMENT | 76.00 | Number of javadoc comment lines | |
| ELOC | 193.00 | Effective lines of code | |
| EXEC_COMMENTS | 11.00 | Comments in executable code | |
| EXITS | 48.00 | Procedure exits | |
| FUNCTIONS | 14.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 54.60 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 32.00 | Interface complexity | |
| JAVA0001 | 1.00 | 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 | 1.00 | 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 | 1.00 | 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 | 11.00 | 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 | 0.00 | 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 | 0.00 | 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 | 1.00 | 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 | 12.00 | 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 | 1.00 | 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 | 0.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 0.00 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0110 | 1.00 | 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 | 1.00 | JAVA0113 Incorrect javadoc: no @author tag | |
| JAVA0114 | 1.00 | 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 | 2.00 | 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 | 0.00 | JAVA0128 Public constructor in non-public class | |
| JAVA0130 | 0.00 | 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 | 1.00 | JAVA0137 Non-abstract class missing constructor | |
| JAVA0138 | 0.00 | 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 | 0.00 | JAVA0163 Empty statement | |
| JAVA0165 | 0.00 | JAVA0165 Conflicting return statement in finally block | |
| JAVA0166 | 1.00 | JAVA0166 Generic exception caught | |
| JAVA0167 | 0.00 | JAVA0167 ThreadDeath not rethrown | |
| JAVA0169 | 0.00 | JAVA0169 Unnecessary catch block: exception 'exception' | |
| JAVA0170 | 0.00 | 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 | 3.00 | 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 | 1.00 | JAVA0287 Unnecessary null check | |
| JAVA0288 | 0.00 | JAVA0288 Inconsistent null check | |
| LINES | 472.00 | Number of lines in the source file | |
| LINE_COMMENT | 34.00 | Number of line comments | |
| LOC | 241.00 | Lines of code | |
| LOGICAL_LINES | 136.00 | Number of statements | |
| LOOPS | 1.00 | Number of loops | |
| NEST_DEPTH | 4.00 | Maximum nesting depth | |
| OPERANDS | 579.00 | Number of operands | |
| OPERATORS | 950.00 | Number of operators | |
| PARAMS | 8.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 1529.00 | Halstead program length | |
| PROGRAM_VOCAB | 271.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 24.00 | Number of return points from functions | |
| SIZE | 15770.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 228.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 43.00 | Number of unique operators | |
| WHITESPACE | 121.00 | Number of whitespace lines | |