Closure.java
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net.sf.saxon.value |
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Saxon |
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 | |
|---|---|---|
| LINE_COMMENT | Number of line comments |  |
| DECL_COMMENTS | Comments in declarations | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0034 | JAVA0034 Missing braces in if statement | |
| JAVA0115 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0049 | JAVA0049 Nested block at depth N (maximum: M) | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| NEST_DEPTH | Maximum nesting depth | |
| PROGRAM_VOLUME | Halstead program volume | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| CYCLOMATIC | Cyclomatic complexity | |
| COMPARISONS | Number of comparison operators | |
| ELOC | Effective lines of code | |
| LOC | Lines of code | |
| LOOPS | Number of loops | |
| LOGICAL_LINES | Number of statements | |
| OPERATORS | Number of operators | |
| PROGRAM_LENGTH | Halstead program length | |
| WHITESPACE | Number of whitespace lines | |
| OPERANDS | Number of operands | |
| JAVA0270 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
| PARAMS | Number of formal parameter declarations | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
| BLOCKS | Number of blocks | |
package net.sf.saxon.value;
import net.sf.saxon.Configuration;
import net.sf.saxon.instruct.SlotManager;
import net.sf.saxon.event.SequenceReceiver;
import net.sf.saxon.expr.*;
import net.sf.saxon.om.*;
import net.sf.saxon.trace.Location;
import net.sf.saxon.trans.XPathException;
import net.sf.saxon.type.AnyItemType;
import net.sf.saxon.type.ItemType;
import net.sf.saxon.type.TypeHierarchy;
import java.io.PrintStream;
/**
* A Closure represents a value that has not yet been evaluated: the value is represented
* by an expression, together with saved values of all the context variables that the
* expression depends on.
*
* <p>This Closure is designed for use when the value is only read once. If the value
* is read more than once, a new iterator over the underlying expression is obtained
* each time: this may (for example in the case of a filter expression) involve
* significant re-calculation.</p>
*
* <p>The expression may depend on local variables and on the context item; these values
* are held in the saved XPathContext object that is kept as part of the Closure, and they
* will always be read from that object. The expression may also depend on global variables;
* these are unchanging, so they can be read from the Bindery in the normal way. Expressions
* that depend on other contextual information, for example the values of position(), last(),
* current(), current-group(), should not be evaluated using this mechanism: they should
* always be evaluated eagerly. This means that the Closure does not need to keep a copy
* of these context variables.</p>
*
*/
public class Closure extends Value {
protected Expression expression;
protected XPathContextMajor savedXPathContext;
protected int depth = 0;
// The base iterator is used to copy items on demand from the underlying value
// to the reservoir. It only ever has one instance (for each Closure) and each
// item is read only once.
protected SequenceIterator inputIterator;
// private static int countClosures = 0;
// private static int countMemoClosures = 0;
/**
* Constructor should not be called directly, instances should be made using the make() method.
*/
public Closure() {
}
/**
* Construct a Closure over an existing SequenceIterator. This is used when an extension function
* returns a SequenceIterator as its result (it replaces the old SequenceIntent class for this
* purpose). There is no known expression in this case. Note that the caller must
* ensure this is a "clean" iterator: it must be positioned at the start, and must
* not be shared by anyone else.
*/
public static Closure makeIteratorClosure(SequenceIterator iterator) {
Closure c = new Closure();
c.inputIterator = iterator;
return c;
}
/**
* Construct a Closure by supplying the expression and the set of context variables.
*/
public static Value make(Expression expression, XPathContext context, int ref) throws XPathException {
// special cases such as TailExpressions and shared append expressions are now picked up before
// this method is called (where possible, at compile time)
Closure c = context.getConfiguration().getOptimizer().makeClosure(expression, ref);
c.expression = expression;
c.savedXPathContext = context.newContext();
c.savedXPathContext.setOriginatingConstructType(Location.LAZY_EVALUATION);
// Make a copy of all local variables. If the value of any local variable is a closure
// whose depth exceeds a certain threshold, we evaluate the closure eagerly to avoid
// creating deeply nested lists of Closures, which consume memory unnecessarily
// We only copy the local variables if the expression has dependencies on local variables.
// What's more, we only copy those variables that the expression actually depends on.
if ((expression.getDependencies() & StaticProperty.DEPENDS_ON_LOCAL_VARIABLES) != 0) {
StackFrame localStackFrame = context.getStackFrame();
ValueRepresentation[] local = localStackFrame.getStackFrameValues();
int[] slotsUsed = ((ComputedExpression)expression).getSlotsUsed(); // computed on first call
if (local != null) {
final SlotManager stackFrameMap = localStackFrame.getStackFrameMap();
final ValueRepresentation[] savedStackFrame =
new ValueRepresentation[stackFrameMap.getNumberOfVariables()];
for (int s=0; s<slotsUsed.length; s++) {
int i = slotsUsed[s];
if (local[i] instanceof Closure) {
int cdepth = ((Closure)local[i]).depth;
if (cdepth >= 10) {
local[i] = SequenceExtent.makeSequenceExtent(((Closure)local[i]).iterate(context));
} else if (cdepth + 1 > c.depth) {
c.depth = cdepth + 1;
}
}
savedStackFrame[i] = local[i];
}
c.savedXPathContext.setStackFrame(stackFrameMap, savedStackFrame);
}
}
// Make a copy of the context item
SequenceIterator currentIterator = context.getCurrentIterator();
if (currentIterator != null) {
Item contextItem = currentIterator.current();
AxisIterator single = SingletonIterator.makeIterator(contextItem);
single.next();
c.savedXPathContext.setCurrentIterator(single);
// we don't save position() and last() because we have no way
// of restoring them. So the caller must ensure that a Closure is not
// created if the expression depends on position() or last()
}
c.savedXPathContext.setReceiver(null);
return c;
}
/**
* Get the static item type
* @param th
*/
public ItemType getItemType(TypeHierarchy th) {
if (expression == null) {
return AnyItemType.getInstance();
} else {
return expression.getItemType(th);
}
// This is probably rarely used, because a Closure has no static existence, and
// run-time polymorphism applies mainly to singletons, which are rarely evaluated as Closures.
}
/**
* Get the cardinality
*/
public int getCardinality() {
if (expression == null) {
return StaticProperty.ALLOWS_ZERO_OR_MORE;
} else {
return expression.getCardinality();
}
}
/**
* Get the static properties of this expression (other than its type). The result is
* bit-signficant. These properties are used for optimizations. In general, if
* property bit is set, it is true, but if it is unset, the value is unknown.
*/
public int getSpecialProperties() {
if (expression == null) {
return StaticProperty.ALLOWS_ZERO_OR_MORE;
} else {
return expression.getSpecialProperties();
}
}
/**
* An implementation of Expression must provide at least one of the methods evaluateItem(), iterate(), or process().
* This method indicates which of these methods is provided. This implementation provides both iterate() and
* process() methods natively.
*/
public int getImplementationMethod() {
return ITERATE_METHOD | PROCESS_METHOD;
}
/**
* Evaluate the expression in a given context to return an iterator over a sequence
* @param context the evaluation context. This is ignored; we use the context saved
* as part of the Closure instead.
*/
public SequenceIterator iterate(XPathContext context) throws XPathException {
if (inputIterator == null) {
inputIterator = expression.iterate(savedXPathContext);
return inputIterator;
} else {
// In an ideal world this shouldn't happen: if the value is needed more than once, we should
// have chosen a MemoClosure. In fact, this path is never taken when executing the standard
// test suite (April 2005). However, it provides robustness in case the compile-time analysis
// is flawed. I believe it's also possible that this path can be taken if a Closure needs to be
// evaluated when the chain of dependencies gets too long: this was happening routinely when
// all local variables were saved, rather than only those that the expression depends on.
return inputIterator.getAnother();
}
}
/**
* Process the instruction, without returning any tail calls
* @param context The dynamic context, giving access to the current node,
* the current variables, etc.
*/
public void process(XPathContext context) throws XPathException {
// To evaluate the closure in push mode, we need to use the original context of the
// expression for everything except the current output destination, which is newly created
XPathContext c2 = savedXPathContext.newContext();
SequenceReceiver out = context.getReceiver();
c2.setTemporaryReceiver(out);
expression.process(c2);
}
/**
* Reduce a value to its simplest form. If the value is a closure or some other form of deferred value
* such as a FunctionCallPackage, then it is reduced to a SequenceExtent. If it is a SequenceExtent containing
* a single item, then it is reduced to that item. One consequence that is exploited by class FilterExpression
* is that if the value is a singleton numeric value, then the result will be an instance of NumericValue
*/
public Value reduce() throws XPathException {
return new SequenceExtent(iterate(null)).reduce();
}
/**
* Determine whether this Closure is indexable
*/
public boolean isIndexable() {
return false;
}
public void display(int level, PrintStream out, Configuration config) {
out.println(ExpressionTool.indent(level) + "Closure of expression:");
expression.display(level+1, out, config);
}
}
//
// The contents of this file are subject to the Mozilla Public License Version 1.0 (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.mozilla.org/MPL/
//
// Software distributed under the License is distributed on an "AS IS" basis,
// WITHOUT WARRANTY OF ANY KIND, either express or implied.
// See the License for the specific language governing rights and limitations under the License.
//
// The Original Code is: all this file.
//
// The Initial Developer of the Original Code is Michael H. Kay.
//
// Portions created by (your name) are Copyright (C) (your legal entity). All Rights Reserved.
//
// Contributor(s): none.
//
The table below shows all metrics for Closure.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 27.00 | Number of blocks | |
| BLOCK_COMMENT | 0.00 | Number of block comment lines | |
| COMMENTS | 112.00 | Comment lines | |
| COMMENT_DENSITY | 1.27 | Comment density | |
| COMPARISONS | 12.00 | Number of comparison operators | |
| CYCLOMATIC | 23.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 32.00 | Comments in declarations | |
| DOC_COMMENT | 69.00 | Number of javadoc comment lines | |
| ELOC | 88.00 | Effective lines of code | |
| EXEC_COMMENTS | 8.00 | Comments in executable code | |
| EXITS | 34.00 | Procedure exits | |
| FUNCTIONS | 12.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 46.45 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 32.00 | 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 | 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 | 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 | 2.00 | 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 | 1.00 | 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 | 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 | 4.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 0.00 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0110 | 9.00 | 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 | 4.00 | 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 | 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 | 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 | 0.00 | 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 | 0.00 | JAVA0179 Local variable hides visible field | |
| JAVA0233 | 0.00 | JAVA0233 Definition of serialVersionUID other than 'private static final long serialVersionUID' | |
| JAVA0234 | 1.00 | 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 | 1.00 | 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 | 265.00 | Number of lines in the source file | |
| LINE_COMMENT | 43.00 | Number of line comments | |
| LOC | 111.00 | Lines of code | |
| LOGICAL_LINES | 61.00 | Number of statements | |
| LOOPS | 1.00 | Number of loops | |
| NEST_DEPTH | 6.00 | Maximum nesting depth | |
| OPERANDS | 281.00 | Number of operands | |
| OPERATORS | 510.00 | Number of operators | |
| PARAMS | 10.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 791.00 | Halstead program length | |
| PROGRAM_VOCAB | 161.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 22.00 | Number of return points from functions | |
| SIZE | 11296.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 121.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 40.00 | Number of unique operators | |
| WHITESPACE | 42.00 | Number of whitespace lines | |