ExprNode.java
| Index Score | ||
|---|---|---|
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com.espertech.esper.epl.expression |
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Esper |
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 | |
|---|---|---|
| JAVA0144 | JAVA0144 Line exceeds maximum M characters |  |
| JAVA0034 | JAVA0034 Missing braces in if statement | |
| JAVA0177 | JAVA0177 Variable declaration missing initializer | |
| SIZE | Size of the file in bytes | |
| BLOCKS | Number of blocks | |
| JAVA0130 | JAVA0130 Non-static method does not use instance fields | |
| EXITS | Procedure exits | |
| LOC | Lines of code | |
| INTERFACE_COMPLEXITY | Interface complexity | |
| LINES | Number of lines in the source file | |
| RETURNS | Number of return points from functions | |
| DECL_COMMENTS | Comments in declarations | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| EXEC_COMMENTS | Comments in executable code | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| JAVA0128 | JAVA0128 Public constructor in non-public class | |
| UNIQUE_OPERANDS | Number of unique operands | |
| UNIQUE_OPERATORS | Number of unique operators | |
| PROGRAM_VOLUME | Halstead program volume | |
| PARAMS | Number of formal parameter declarations | |
| CYCLOMATIC | Cyclomatic complexity | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0113 | JAVA0113 Incorrect javadoc: no @author tag | |
| JAVA0067 | JAVA0067 Array descriptor on identifier name | |
| COMPARISONS | Number of comparison operators | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| OPERATORS | Number of operators | |
| PROGRAM_LENGTH | Halstead program length | |
| LINE_COMMENT | Number of line comments | |
| OPERANDS | Number of operands | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
/**************************************************************************************
* Copyright (C) 2006 Esper Team. All rights reserved. *
* http://esper.codehaus.org *
* ---------------------------------------------------------------------------------- *
* The software in this package is published under the terms of the GPL license *
* a copy of which has been included with this distribution in the license.txt file. *
**************************************************************************************/
package com.espertech.esper.epl.expression;
import com.espertech.esper.epl.core.*;
import com.espertech.esper.epl.agg.AggregationSupport;
import com.espertech.esper.epl.variable.VariableService;
import com.espertech.esper.util.MetaDefItem;
import com.espertech.esper.schedule.TimeProvider;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import java.util.LinkedList;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
/**
* Superclass for filter nodes in a filter expression tree. Allow
* validation against stream event types and evaluation of events against filter tree.
*/
public abstract class ExprNode implements ExprValidator, ExprEvaluator, MetaDefItem
{
private final LinkedList<ExprNode> childNodes;
/**
* Returns the expression node rendered as a string.
* @return string rendering of expression
*/
public abstract String toExpressionString();
/**
* Returns true if the expression node's evaluation value doesn't depend on any events data,
* as must be determined at validation time, which is bottom-up and therefore
* reliably allows each node to determine constant value.
* @return true for constant evaluation value, false for non-constant evaluation value
*/
public abstract boolean isConstantResult();
/**
* Return true if a expression node semantically equals the current node, or false if not.
* <p>Concrete implementations should compare the type and any additional information
* that impact the evaluation of a node.
* @param node to compare to
* @return true if semantically equal, or false if not equals
*/
public abstract boolean equalsNode(ExprNode node);
/**
* Constructor creates a list of child nodes.
*/
public ExprNode()
{
childNodes = new LinkedList<ExprNode>();
}
/**
* Validates the expression node subtree that has this
* node as root. Some of the nodes of the tree, including the
* root, might be replaced in the process.
* @param streamTypeService - serves stream type information
* @param methodResolutionService - for resolving class names in library method invocations
* @param viewResourceDelegate - delegates for view resources to expression nodes
* @param timeProvider - provides engine current time
* @param variableService - provides access to variable values
* @throws ExprValidationException when the validation fails
* @return the root node of the validated subtree, possibly
* different than the root node of the unvalidated subtree
*/
public ExprNode getValidatedSubtree(StreamTypeService streamTypeService,
MethodResolutionService methodResolutionService,
ViewResourceDelegate viewResourceDelegate,
TimeProvider timeProvider,
VariableService variableService) throws ExprValidationException
{
ExprNode result = this;
for (int i = 0; i < childNodes.size(); i++)
{
childNodes.set(i, childNodes.get(i).getValidatedSubtree(streamTypeService, methodResolutionService, viewResourceDelegate, timeProvider, variableService));
}
try
{
validate(streamTypeService, methodResolutionService, viewResourceDelegate, timeProvider, variableService);
}
catch(ExprValidationException e)
{
if (this instanceof ExprIdentNode)
{
ExprIdentNode identNode = (ExprIdentNode) this;
try
{
result = resolveStaticMethodOrField(identNode, streamTypeService, methodResolutionService, e, timeProvider, variableService);
}
catch(ExprValidationException ex)
{
result = resolveAsStreamName(identNode, streamTypeService, e);
}
}
else if (this instanceof ExprStaticMethodNode)
{
ExprStaticMethodNode staticMethodNode = (ExprStaticMethodNode) this;
result = resolveInstanceMethod(staticMethodNode, streamTypeService, methodResolutionService, e);
}
else
{
throw e;
}
}
return result;
}
private ExprNode resolveInstanceMethod(ExprStaticMethodNode staticMethodNode, StreamTypeService streamTypeService, MethodResolutionService methodResolutionService, ExprValidationException existingException)
throws ExprValidationException
{
String streamName = staticMethodNode.getClassName();
boolean streamFound = false;
for (String name : streamTypeService.getStreamNames())
{
if (name.equals(streamName))
{
streamFound = true;
}
}
String methodName = staticMethodNode.getMethodName();
ExprStreamInstanceMethodNode exprStream = new ExprStreamInstanceMethodNode(streamName, methodName);
for (ExprNode childNode : staticMethodNode.getChildNodes())
{
exprStream.addChildNode(childNode);
}
try
{
exprStream.validate(streamTypeService, methodResolutionService, null, null, null);
}
catch (ExprValidationException ex)
{
if (streamFound)
{
throw ex;
}
throw existingException;
}
return exprStream;
}
private ExprNode resolveAsStreamName(ExprIdentNode identNode, StreamTypeService streamTypeService, ExprValidationException existingException)
throws ExprValidationException
{
ExprStreamUnderlyingNode exprStream = new ExprStreamUnderlyingNode(identNode.getUnresolvedPropertyName());
try
{
exprStream.validate(streamTypeService, null, null, null, null);
}
catch (ExprValidationException ex)
{
throw existingException;
}
return exprStream;
}
/**
* Accept the visitor. The visitor will first visit the parent then visit all child nodes, then their child nodes.
* <p>The visitor can decide to skip child nodes by returning false in isVisit.
* @param visitor to visit each node and each child node.
*/
public void accept(ExprNodeVisitor visitor)
{
if (visitor.isVisit(this))
{
visitor.visit(this);
for (ExprNode childNode : childNodes)
{
childNode.accept(visitor);
}
}
}
/**
* Adds a child node.
* @param childNode is the child evaluation tree node to add
*/
public final void addChildNode(ExprNode childNode)
{
childNodes.add(childNode);
}
/**
* Returns list of child nodes.
* @return list of child nodes
*/
public final LinkedList<ExprNode> getChildNodes()
{
return childNodes;
}
/**
* Recursively print out all nodes.
* @param prefix is printed out for naming the printed info
*/
@SuppressWarnings({"StringContatenationInLoop"})
public final void dumpDebug(String prefix)
{
if (log.isDebugEnabled())
{
log.debug(".dumpDebug " + prefix + this.toString());
}
for (ExprNode node : childNodes)
{
node.dumpDebug(prefix + " ");
}
}
/**
* Compare two expression nodes and their children in exact child-node sequence,
* returning true if the 2 expression nodes trees are equals, or false if they are not equals.
* <p>
* Recursive call since it uses this method to compare child nodes in the same exact sequence.
* Nodes are compared using the equalsNode method.
* @param nodeOne - first expression top node of the tree to compare
* @param nodeTwo - second expression top node of the tree to compare
* @return false if this or all child nodes are not equal, true if equal
*/
public static boolean deepEquals(ExprNode nodeOne, ExprNode nodeTwo)
{
if (nodeOne.childNodes.size() != nodeTwo.childNodes.size())
{
return false;
}
if (!nodeOne.equalsNode(nodeTwo))
{
return false;
}
for (int i = 0; i < nodeOne.childNodes.size(); i++)
{
ExprNode childNodeOne = nodeOne.childNodes.get(i);
ExprNode childNodeTwo = nodeTwo.childNodes.get(i);
if (!ExprNode.deepEquals(childNodeOne, childNodeTwo))
{
return false;
}
}
return true;
}
// Since static method calls such as "Class.method('a')" and mapped properties "Stream.property('key')"
// look the same, however as the validation could not resolve "Stream.property('key')" before calling this method,
// this method tries to resolve the mapped property as a static method.
// Assumes that this is an ExprIdentNode.
private ExprNode resolveStaticMethodOrField(ExprIdentNode identNode, StreamTypeService streamTypeService, MethodResolutionService methodResolutionService, ExprValidationException propertyException, TimeProvider timeProvider, VariableService variableService)
throws ExprValidationException
{
// Reconstruct the original string
StringBuffer mappedProperty = new StringBuffer(identNode.getUnresolvedPropertyName());
if(identNode.getStreamOrPropertyName() != null)
{
mappedProperty.insert(0, identNode.getStreamOrPropertyName() + '.');
}
// Parse the mapped property format into a class name, method and single string parameter
MappedPropertyParseResult parse = parseMappedProperty(mappedProperty.toString());
if (parse == null)
{
ExprConstantNode constNode = resolveIdentAsEnumConst(mappedProperty.toString(), methodResolutionService);
if (constNode == null)
{
throw propertyException;
}
else
{
return constNode;
}
}
// If there is a class name, assume a static method is possible
if (parse.getClassName() != null)
{
ExprNode result = new ExprStaticMethodNode(parse.getClassName(), parse.getMethodName());
result.addChildNode(new ExprConstantNode(parse.getArgString()));
// Validate
try
{
result.validate(streamTypeService, methodResolutionService, null, timeProvider, variableService);
}
catch(ExprValidationException e)
{
throw new ExprValidationException("Failed to resolve " + mappedProperty + " as either an event property or as a static method invocation");
}
return result;
}
// There is no class name, try an aggregation function
try
{
AggregationSupport aggregation = methodResolutionService.resolveAggregation(parse.getMethodName());
ExprNode result = new ExprPlugInAggFunctionNode(false, aggregation, parse.getMethodName());
result.addChildNode(new ExprConstantNode(parse.getArgString()));
// Validate
try
{
result.validate(streamTypeService, methodResolutionService, null, timeProvider, variableService);
}
catch (RuntimeException e)
{
throw new ExprValidationException("Plug-in aggregation function '" + parse.getMethodName() + "' failed validation: " + e.getMessage());
}
return result;
}
catch (EngineImportUndefinedException e)
{
// Not an aggregation function
}
catch (EngineImportException e)
{
throw new IllegalStateException("Error resolving aggregation: " + e.getMessage(), e);
}
// absolutly cannot be resolved
throw propertyException;
}
private ExprConstantNode resolveIdentAsEnumConst(String constant, MethodResolutionService methodResolutionService)
throws ExprValidationException
{
int lastDotIndex = constant.lastIndexOf('.');
if (lastDotIndex == -1)
{
return null;
}
String className = constant.substring(0, lastDotIndex);
String constName = constant.substring(lastDotIndex + 1);
Class clazz;
try
{
clazz = methodResolutionService.resolveClass(className);
}
catch (EngineImportException e)
{
return null;
}
Field field;
try
{
field = clazz.getField(constName);
}
catch (NoSuchFieldException e)
{
return null;
}
int modifiers = field.getModifiers();
if (Modifier.isPublic(modifiers) && Modifier.isStatic(modifiers))
{
try
{
Object value = field.get(null);
return new ExprConstantNode(value);
}
catch (IllegalAccessException e)
{
throw new ExprValidationException("Exception accessing field '" + field.getName() + "': " + e.getMessage(), e);
}
}
return null;
}
/**
* Parse the mapped property into classname, method and string argument.
* Mind this has been parsed already and is a valid mapped property.
* @param property is the string property to be passed as a static method invocation
* @return descriptor object
*/
protected static MappedPropertyParseResult parseMappedProperty(String property)
{
// get argument
int indexFirstDoubleQuote = property.indexOf("\"");
int indexFirstSingleQuote = property.indexOf("'");
int startArg;
if ((indexFirstSingleQuote == -1) && (indexFirstDoubleQuote == -1))
{
return null;
}
if ((indexFirstSingleQuote != -1) && (indexFirstDoubleQuote != -1))
{
if (indexFirstSingleQuote < indexFirstDoubleQuote)
{
startArg = indexFirstSingleQuote;
}
else
{
startArg = indexFirstDoubleQuote;
}
}
else if (indexFirstSingleQuote != -1)
{
startArg = indexFirstSingleQuote;
}
else
{
startArg = indexFirstDoubleQuote;
}
int indexLastDoubleQuote = property.lastIndexOf("\"");
int indexLastSingleQuote = property.lastIndexOf("'");
int endArg;
if ((indexLastSingleQuote == -1) && (indexLastDoubleQuote == -1))
{
return null;
}
if ((indexLastSingleQuote != -1) && (indexLastDoubleQuote != -1))
{
if (indexLastSingleQuote > indexLastDoubleQuote)
{
endArg = indexLastSingleQuote;
}
else
{
endArg = indexLastDoubleQuote;
}
}
else if (indexLastSingleQuote != -1)
{
endArg = indexLastSingleQuote;
}
else
{
endArg = indexLastDoubleQuote;
}
String argument = property.substring(startArg + 1, endArg);
// get method
String splitDots[] = property.split("[\\.]");
if (splitDots.length == 0)
{
return null;
}
String method = splitDots[splitDots.length - 1];
int indexParan = method.indexOf("(");
if (indexParan == -1)
{
return null;
}
method = method.substring(0, indexParan);
if (method.length() == 0)
{
return null;
}
if (splitDots.length == 1)
{
// no class name
return new MappedPropertyParseResult(null, method, argument);
}
// get class
StringBuffer clazz = new StringBuffer();
for (int i = 0; i < splitDots.length - 1; i++)
{
if (i > 0)
{
clazz.append('.');
}
clazz.append(splitDots[i]);
}
return new MappedPropertyParseResult(clazz.toString(), method, argument);
}
/**
* Encapsulates the parse result parsing a mapped property as a class and method name with args.
*/
protected static class MappedPropertyParseResult
{
private String className;
private String methodName;
private String argString;
/**
* Returns class name.
* @return name of class
*/
public String getClassName()
{
return className;
}
/**
* Returns the method name.
* @return method name
*/
public String getMethodName()
{
return methodName;
}
/**
* Returns the method argument.
* @return arg
*/
public String getArgString()
{
return argString;
}
/**
* Returns the parse result of the mapped property.
* @param className is the class name, or null if there isn't one
* @param methodName is the method name
* @param argString is the argument
*/
public MappedPropertyParseResult(String className, String methodName, String argString)
{
this.className = className;
this.methodName = methodName;
this.argString = argString;
}
}
private static final Log log = LogFactory.getLog(ExprNode.class);
}
The table below shows all metrics for ExprNode.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 78.00 | Number of blocks | |
| BLOCK_COMMENT | 0.00 | Number of block comment lines | |
| COMMENTS | 114.00 | Comment lines | |
| COMMENT_DENSITY | 0.53 | Comment density | |
| COMPARISONS | 40.00 | Number of comparison operators | |
| CYCLOMATIC | 63.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 19.00 | Comments in declarations | |
| DOC_COMMENT | 98.00 | Number of javadoc comment lines | |
| ELOC | 214.00 | Effective lines of code | |
| EXEC_COMMENTS | 12.00 | Comments in executable code | |
| EXITS | 54.00 | Procedure exits | |
| FUNCTIONS | 19.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 71.69 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 72.00 | 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 | 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 | 1.00 | 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 | 0.00 | 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 | 1.00 | 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 | 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 | 2.00 | JAVA0113 Incorrect javadoc: no @author tag | |
| JAVA0114 | 2.00 | 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 | 3.00 | 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 | 7.00 | 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 | 4.00 | 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 | 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 | 1.00 | 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 | 542.00 | Number of lines in the source file | |
| LINE_COMMENT | 16.00 | Number of line comments | |
| LOC | 374.00 | Lines of code | |
| LOGICAL_LINES | 131.00 | Number of statements | |
| LOOPS | 3.00 | Number of loops | |
| NEST_DEPTH | 4.00 | Maximum nesting depth | |
| OPERANDS | 632.00 | Number of operands | |
| OPERATORS | 1210.00 | Number of operators | |
| PARAMS | 30.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 1842.00 | Halstead program length | |
| PROGRAM_VOCAB | 265.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 42.00 | Number of return points from functions | |
| SIZE | 19133.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 216.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 49.00 | Number of unique operators | |
| WHITESPACE | 54.00 | Number of whitespace lines | |