JSON.java
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|---|---|---|
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grails.converters |
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Grails |
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 | |
|---|---|---|
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws |  |
| EXITS | Procedure exits | |
| JAVA0254 | JAVA0254 Use enhanced for loop construct instead of Iterator | |
| JAVA0169 | JAVA0169 Unnecessary catch block: exception 'exception' | |
| BLOCKS | Number of blocks | |
| JAVA0049 | JAVA0049 Nested block at depth N (maximum: M) | |
| JAVA0270 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
| UNIQUE_OPERANDS | Number of unique operands | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| CYCLOMATIC | Cyclomatic complexity | |
| OPERATORS | Number of operators | |
| PROGRAM_LENGTH | Halstead program length | |
| LOOPS | Number of loops | |
| NEST_DEPTH | Maximum nesting depth | |
| SIZE | Size of the file in bytes | |
| RETURNS | Number of return points from functions | |
| JAVA0166 | JAVA0166 Generic exception caught | |
| OPERANDS | Number of operands | |
| LOGICAL_LINES | Number of statements | |
| JAVA0034 | JAVA0034 Missing braces in if statement | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0144 | JAVA0144 Line exceeds maximum M characters | |
| ELOC | Effective lines of code | |
| UNIQUE_OPERATORS | Number of unique operators | |
| INTERFACE_COMPLEXITY | Interface complexity | |
| PROGRAM_VOLUME | Halstead program volume | |
| DECL_COMMENTS | Comments in declarations | |
| EXEC_COMMENTS | Comments in executable code | |
| LINE_COMMENT | Number of line comments | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0171 | JAVA0171 Unused local variable | |
| LOC | Lines of code | |
| COMPARISONS | Number of comparison operators | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| WHITESPACE | Number of whitespace lines | |
| JAVA0068 | JAVA0068 Modifiers not declared in recommended order | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
/* Copyright 2006-2007 Graeme Rocher
*
* 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 grails.converters;
import grails.util.GrailsWebUtil;
import groovy.lang.GString;
import groovy.lang.GroovyObject;
import org.apache.commons.io.IOUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.codehaus.groovy.grails.commons.ConfigurationHolder;
import org.codehaus.groovy.grails.commons.GrailsClassUtils;
import org.codehaus.groovy.grails.commons.GrailsDomainClass;
import org.codehaus.groovy.grails.commons.GrailsDomainClassProperty;
import org.codehaus.groovy.grails.web.converters.AbstractConverter;
import org.codehaus.groovy.grails.web.converters.Converter;
import org.codehaus.groovy.grails.web.converters.ConverterUtil;
import org.codehaus.groovy.grails.web.converters.exceptions.ConverterException;
import org.codehaus.groovy.grails.web.json.*;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.BeanWrapper;
import org.springframework.beans.BeanWrapperImpl;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.beans.BeanInfo;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.io.IOException;
import java.io.InputStream;
import java.io.Writer;
import java.lang.reflect.Array;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.net.URL;
import java.util.*;
/**
* A converter that converts domain classes, Maps, Lists, Arrays, POJOs and POGOs to JSON
*
* @author Siegfried Puchbauer
*/
public class JSON extends AbstractConverter implements Converter {
private final static Log log = LogFactory.getLog(JSON.class);
private Object target;
private String encoding;
private JSONWriter writer;
private boolean renderDomainClassRelations = false;
private static final String CACHED_JSON = "org.codehaus.groovy.grails.CACHED_JSON_REQUEST_CONTENT";
private static final String DEFAULT_ENCODING = "utf-8";
/**
* Returns true if the JSON Converter is configured to convert referenced Domain Class instances as they are
* or just their id's (false)
*
* @return true or false ;-)
*/
public boolean isRenderDomainClassRelations() {
return renderDomainClassRelations;
}
/**
* @param renderDomainClassRelations
* @return the JSON instance for chaining
*/
public JSON setRenderDomainClassRelations(boolean renderDomainClassRelations) {
this.renderDomainClassRelations = renderDomainClassRelations;
return this;
}
/**
* Default Constructor for a JSON Converter
*/
public JSON() {
Map config = ConfigurationHolder.getFlatConfig();
Object enc = config.get("grails.converters.encoding");
if ((enc != null) && (enc.toString().trim().length() > 0)) {
this.encoding = enc.toString();
} else {
this.encoding = DEFAULT_ENCODING;
}
this.target = null;
}
/**
* Creates a new JSON Converter for the given Object
*
* @param target the Object to convert
*/
public JSON(Object target) {
this();
this.target = target;
}
/**
* Directs the JSON Writer to the given Writer
*
* @param out the Writer
* @throws org.codehaus.groovy.grails.web.converters.exceptions.ConverterException
*
*/
public void render(Writer out) throws ConverterException {
this.writer = new JSONWriter(out);
try {
value(this.target);
} finally {
try {
out.flush();
out.close();
} catch (Exception e) {
log.warn("Unexpected exception while closing a writer: " + e.getMessage());
}
}
}
/**
* Directs the JSON Writer to the Outputstream of the HttpServletResponse and sets the Content-Type to application/json
*
* @param response a HttpServletResponse
* @throws ConverterException
*/
public void render(HttpServletResponse response) throws ConverterException {
response.setContentType(GrailsWebUtil.getContentType("application/json",this.encoding));
try {
render(response.getWriter());
} catch (IOException e) {
throw new ConverterException(e);
}
}
/**
* Reads the value of the primary identifier property of a domain class instance
*
* @param domainObject The domain class instance
* @param idProperty The GrailsDomainClassProperty
* @return The primary identifier of the specified domain object
*/
protected Object extractIdValue(Object domainObject, GrailsDomainClassProperty idProperty) {
BeanWrapper beanWrapper = new BeanWrapperImpl(domainObject);
return beanWrapper.getPropertyValue(idProperty.getName());
}
/**
* Renders any Java object to the JSON Writer by leveraging the Java reflection API
*
* @param o The Bean to render
* @throws ConverterException
*/
protected void bean(Object o) throws ConverterException {
try {
writer.object();
BeanInfo info = Introspector.getBeanInfo(o.getClass());
PropertyDescriptor[] properties = info.getPropertyDescriptors();
for (int i = 0; i < properties.length; i++) {
PropertyDescriptor property = properties[i];
String name = property.getName();
Method readMethod = property.getReadMethod();
Class propType = property.getPropertyType();
if (readMethod != null && !(o instanceof GroovyObject && name.equals("metaClass"))) {
Object value = readMethod.invoke(o, (Object[]) null);
property(name, value);
}
}
Field[] fields = o.getClass().getDeclaredFields();
for (int i = 0; i < fields.length; i++) {
Field field = fields[i];
int modifiers = field.getModifiers();
if (Modifier.isPublic(modifiers) && !(Modifier.isStatic(modifiers) || Modifier.isTransient(modifiers))) {
property(field.getName(), field.get(o));
}
}
writer.endObject();
} catch (ConverterException ce) {
throw ce;
} catch (Exception e) {
throw new ConverterException("Error converting Bean with class " + o.getClass().getName(), e);
}
}
/**
* Renders a instance of a Grails Domain Class to the JSON Writer
*
* @param o The Domain Class instance
* @throws ConverterException
*/
protected void domain(Object o) throws ConverterException {
try {
BeanWrapper beanWrapper = createBeanWrapper(o);
GrailsDomainClass domainClass = ConverterUtil.getDomainClass(o.getClass().getName());
if(domainClass != null) {
writer.object();
GrailsDomainClassProperty id = domainClass.getIdentifier();
property(id.getName(), beanWrapper.getPropertyValue(id.getName()));
property("class", domainClass.getName());
GrailsDomainClassProperty[] properties = domainClass.getPersistentProperties();
for (int i = 0; i < properties.length; i++) {
GrailsDomainClassProperty prop = properties[i];
if (!prop.isAssociation() || isRenderDomainClassRelations()) {
property(prop.getName(), beanWrapper.getPropertyValue(prop.getName()));
} else {
writer.key(prop.getName());
Object refValue = beanWrapper.getPropertyValue(prop.getName());
if (refValue == null) {
Class propClass = prop.getType();
if (Collection.class.isAssignableFrom(propClass)) {
writer.array();
writer.endArray();
} else if (Map.class.isAssignableFrom(propClass)) {
writer.object();
writer.endObject();
} else {
writer.value(null);
}
} else if (prop.isOneToOne() || prop.isManyToOne() || prop.isEmbedded()) {
value(extractIdValue(refValue, prop.getReferencedDomainClass().getIdentifier()));
} else {
//Class referenceClass = prop.getType();
GrailsDomainClassProperty refIdProperty = prop.getReferencedDomainClass().getIdentifier();
if (Collection.class.isAssignableFrom(prop.getType())) {
writer.array();
Collection col = (Collection) refValue;
for (Iterator it = col.iterator(); it.hasNext();) {
Object val = it.next();
value(extractIdValue(val, refIdProperty));
}
writer.endArray();
} else if (Map.class.isAssignableFrom(prop.getType())) {
writer.object();
Map map = (Map) refValue;
Iterator it = map.keySet().iterator();
while (it.hasNext()) {
String key = (String) it.next(); // Key has be a string
property(key, extractIdValue(map.get(key), refIdProperty));
}
writer.endObject();
} else {
throw new ConverterException("Unable to convert property \"" + prop.getName() + "\" of Domain Class \""
+ domainClass.getName() + "\": The association class [" + prop.getType().getName() + "] is not a Collection or a Map!");
}
}
}
}
writer.endObject();
}
} catch (ConverterException ce) {
throw ce;
} catch (JSONException e) {
throw new ConverterException(e);
}
}
/**
* @param o the array object
* @throws ConverterException
*/
public void array(Object o) throws ConverterException {
try {
int len = Array.getLength(o);
writer.array();
for (int i = 0; i < len; i++) {
value(Array.get(o, i));
}
writer.endArray();
} catch (JSONException e) {
throw new ConverterException(e);
}
}
/**
* @param o
* @throws ConverterException
*/
public void value(Object o) throws ConverterException {
try {
if (o == null) {
writer.value(null);
} else if (o instanceof GroovyObject && ConverterUtil.isDomainClass(o.getClass())) {
domain(o);
} else if(GrailsClassUtils.isJdk5Enum(o.getClass())) {
enumeration(o);
} else if (o instanceof Class) {
writer.value(((Class) o).getName());
} else if (o instanceof Map) {
writer.object();
Map map = (Map) o;
for (Iterator it = map.keySet().iterator(); it.hasNext();) {
Object key = it.next();
property(key.toString(), map.get(key));
}
writer.endObject();
} else if (o instanceof Collection) {
writer.array();
for (Iterator it = ((Collection) o).iterator(); it.hasNext();) {
value(it.next());
}
writer.endArray();
} else if (o.getClass().isArray()) {
array(o);
} else if (o instanceof String) {
writer.value(o);
} else if (o instanceof GString) {
value(o.toString());
} else if (o instanceof Date) {
Date d = (Date) o;
writer.value(d);
} else if (o instanceof Calendar) {
value(((Calendar) o).getTime());
} else if (o.getClass().equals(byte[].class)) {
// TODO: How to render binary content?
value(((byte[]) o).length + " Bytes");
} else if ((o.getClass().isPrimitive() && !o.getClass().equals(byte[].class))
|| o instanceof Number || o instanceof Boolean) {
writer.value(o);
} else if (o instanceof Currency || o instanceof TimeZone || o instanceof Locale || o instanceof URL) {
value(o.toString());
} else {
bean(o);
}
} catch (ConverterException ce) {
throw ce;
} catch (JSONException e) {
throw new ConverterException(e);
}
}
private void enumeration(Object en) throws JSONException {
writer.object();
Class enumClass = en.getClass();
property("enumType", enumClass.getName());
Method nameMethod = BeanUtils.findDeclaredMethod(enumClass, "name", null);
try {
property("name",nameMethod.invoke(en,null));
} catch (Exception e) {
property("name", "");
}
writer.endObject();
}
private void property(String key, Object value) throws JSONException, ConverterException {
writer.key(key);
value(value);
}
/**
* Performs the conversion and returns the resulting JSON as String
*
* @param prettyPrint true, if the output should be indented, otherwise false
* @return a JSON String
* @throws JSONException
*/
public String toString(boolean prettyPrint) throws JSONException {
String json = super.toString();
if (prettyPrint) {
Object jsonObject = new JSONTokener(json).nextValue();
if (jsonObject instanceof JSONObject)
return ((JSONObject) jsonObject).toString(3);
else if (jsonObject instanceof JSONArray)
return ((JSONArray) jsonObject).toString(3);
}
return json;
}
/**
* Parses the given JSON String and returns ether a JSONObject or a JSONArry
*
* @param source A string containing some JSON
* @return ether a JSONObject or a JSONArray - depending on the given JSON
* @throws ConverterException when the JSON content is not valid
*/
public static Object parse(String source) throws ConverterException {
try {
return new JSONTokener(source).nextValue();
} catch (JSONException e) {
throw new ConverterException("Error parsing JSON", e);
}
}
/**
* Parses the given JSON and returns ether a JSONObject or a JSONArry
*
* @param is An InputStream which delivers some JSON
* @param encoding the Character Encoding to use
* @return ether a JSONObject or a JSONArray - depending on the given JSON
* @throws ConverterException when the JSON content is not valid
*/
public static Object parse(InputStream is, String encoding) throws ConverterException {
try {
return parse(IOUtils.toString(is, encoding));
} catch (IOException e) {
throw new ConverterException("Error parsing JSON", e);
}
}
/**
* Parses the given request's InputStream and returns ether a JSONObject or a JSONArry
*
* @param request the JSON Request
* @return ether a JSONObject or a JSONArray - depending on the given JSON
* @throws ConverterException when the JSON content is not valid
*/
public static Object parse(HttpServletRequest request) throws ConverterException {
Object json = request.getAttribute(CACHED_JSON);
if(json != null) return json;
String encoding = request.getCharacterEncoding();
if (encoding == null)
encoding = Converter.DEFAULT_REQUEST_ENCODING;
try {
json = parse(request.getInputStream(), encoding);
request.setAttribute(CACHED_JSON,json);
return json;
} catch (IOException e) {
throw new ConverterException("Error parsing JSON", e);
}
}
/**
* Sets the Object which is later converted to JSON
*
* @param target the Object
* @see org.codehaus.groovy.grails.web.converters.Converter
*/
public void setTarget(Object target) {
this.target = target;
}
}
The table below shows all metrics for JSON.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 83.00 | Number of blocks | |
| BLOCK_COMMENT | 14.00 | Number of block comment lines | |
| COMMENTS | 114.00 | Comment lines | |
| COMMENT_DENSITY | 0.45 | Comment density | |
| COMPARISONS | 40.00 | Number of comparison operators | |
| CYCLOMATIC | 80.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 18.00 | Comments in declarations | |
| DOC_COMMENT | 98.00 | Number of javadoc comment lines | |
| ELOC | 255.00 | Effective lines of code | |
| EXEC_COMMENTS | 2.00 | Comments in executable code | |
| EXITS | 85.00 | Procedure exits | |
| FUNCTIONS | 18.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 76.00 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 67.00 | Interface complexity | |
| JAVA0001 | 0.00 | JAVA0001 Package name does not contain only lower case letters | |
| JAVA0002 | 1.00 | 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 | 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 | 4.00 | 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 | 3.00 | 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 | 1.00 | 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 | 0.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 0.00 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0110 | 0.00 | 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 | 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 | 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 | 10.00 | 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 | 0.00 | 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 | 2.00 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0145 | 9.00 | 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 | 3.00 | JAVA0166 Generic exception caught | |
| JAVA0167 | 0.00 | JAVA0167 ThreadDeath not rethrown | |
| JAVA0169 | 2.00 | JAVA0169 Unnecessary catch block: exception 'exception' | |
| JAVA0170 | 0.00 | JAVA0170 Caught exception not derived from java.lang.Exception | |
| JAVA0171 | 1.00 | 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 | 0.00 | 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 | 4.00 | 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 | 3.00 | 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 | 446.00 | Number of lines in the source file | |
| LINE_COMMENT | 2.00 | Number of line comments | |
| LOC | 303.00 | Lines of code | |
| LOGICAL_LINES | 180.00 | Number of statements | |
| LOOPS | 8.00 | Number of loops | |
| NEST_DEPTH | 8.00 | Maximum nesting depth | |
| OPERANDS | 839.00 | Number of operands | |
| OPERATORS | 1621.00 | Number of operators | |
| PARAMS | 19.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 2460.00 | Halstead program length | |
| PROGRAM_VOCAB | 326.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 48.00 | Number of return points from functions | |
| SIZE | 17621.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 276.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 50.00 | Number of unique operators | |
| WHITESPACE | 29.00 | Number of whitespace lines | |