Function.java
| Index Score | ||
|---|---|---|
 |
 |
org.hsqldb |
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|
HSQL Database Engine |
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 |  |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| SIZE | Size of the file in bytes | |
| JAVA0034 | JAVA0034 Missing braces in if statement | |
| COMMENTS | Comment lines | |
| LOOPS | Number of loops | |
| RETURNS | Number of return points from functions | |
| JAVA0115 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| EXITS | Procedure exits | |
| CYCLOMATIC | Cyclomatic complexity | |
| LINES | Number of lines in the source file | |
| DECL_COMMENTS | Comments in declarations | |
| JAVA0123 | JAVA0123 Use all three components of for loop | |
| EXEC_COMMENTS | Comments in executable code | |
| INTERFACE_COMPLEXITY | Interface complexity | |
| BLOCKS | Number of blocks | |
| UNIQUE_OPERATORS | Number of unique operators | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| WHITESPACE | Number of whitespace lines | |
| LOGICAL_LINES | Number of statements | |
| PROGRAM_VOLUME | Halstead program volume | |
| UNIQUE_OPERANDS | Number of unique operands | |
| JAVA0032 | JAVA0032 Switch statement missing default | |
| COMPARISONS | Number of comparison operators | |
| JAVA0160 | JAVA0160 Method does not throw specified exception | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| OPERANDS | Number of operands | |
| PROGRAM_LENGTH | Halstead program length | |
| JAVA0171 | JAVA0171 Unused local variable | |
| OPERATORS | Number of operators | |
| ELOC | Effective lines of code | |
| BLOCK_COMMENT | Number of block comment lines | |
| JAVA0100 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| LOC | Lines of code | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
/* Copyright (c) 1995-2000, The Hypersonic SQL Group.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of the Hypersonic SQL Group nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE HYPERSONIC SQL GROUP,
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* on behalf of the Hypersonic SQL Group.
*
*
* For work added by the HSQL Development Group:
*
* Copyright (c) 2001-2007, The HSQL Development Group
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of the HSQL Development Group nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL HSQL DEVELOPMENT GROUP, HSQLDB.ORG,
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.hsqldb;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.sql.Connection;
import org.hsqldb.lib.HashMap;
import org.hsqldb.lib.StringConverter;
import org.hsqldb.types.BinaryData;
import org.hsqldb.types.JavaObjectData;
import org.hsqldb.types.Type;
// fredt@users 20020912 - patch 1.7.1 - shortcut treatment of identity() call
// fredt@users 20020912 - patch 1.7.1 - cache java.lang.reflect.Method objects
// fredt@users 20021013 - patch 1.7.1 - ignore non-static methods
// boucherb@users 20030201 - patch 1.7.2 - direct calls for org.hsqldb.Library
// fredt@users 20030621 - patch 1.7.2 - shortcut treatment of session calls
// boucherb@users 200404xx - doc 1.7.2 - updates toward 1.7.2 final
// fredt@users 2006 - 1.9.0 - made a subclass of Expression
/**
* Provides services to evaluate SQL function and stored procedure calls,
* by invoking Java methods.
*
* The core functionality of this class was inherited from HypersonicSQL and
* extensively rewritten and extended in successive versions of HSQLDB.
*
* @author Thomas Mueller (Hypersonic SQL Group)
* @version 1.8.0
* @since Hypersonic SQL
*/
public class Function extends Expression {
private String fullyQualifiedName;
private Method mMethod;
private String returnClassName;
private Class[] aArgClasses;
private int iArgCount;
private int iSqlArgCount;
private int iSqlArgStart;
private Type[] argType;
private boolean[] bArgNullable;
private boolean bConnection;
private static HashMap methodCache = new HashMap();
private int funcType;
private String name; // name used to call function
/**
* Constructs a new Function object with the given function call name
* and using the specified Session context. <p>
*
* The call name is the fully qualified name of a static Java method, in
* the form "package.class.method." This implies that Java
* methods with the same fully qualified name but different signatures
* cannot be used properly as HSQLDB SQL functions or stored procedures.
* For instance, it is impossible to call both System.getProperty(String)
* and System.getProperty(String,String) under this arrangement, because
* the HSQLDB Function object is unable to differentiate between the two;
* it simply chooses the first method matching the FQN in the array of
* methods obtained from calling getMethods() on an instance of the
* Class indicated in the FQN, hiding all other methods with the same
* FQN. <p>
*
* The function FQN must match at least one static Java method FQN in the
* specified class or construction cannot procede and an HsqlException is
* thrown. <p>
*
* The isSimple parameter is true when certain SQL standard functions
* that are used without brackets are invokded.
*
* @param name this Function object's call name
* @param fqn the fully qualified name of a Java method
* @throws HsqlException if the specified function FQN corresponds to no
* Java method
*/
Function(String name, String fqn) throws HsqlException {
super(Expression.FUNCTION);
this.name = name;
// cSession = session;
fullyQualifiedName = fqn;
funcType = Library.functionID(fqn);
int i = fqn.lastIndexOf('.');
if (i == -1) {
throw Trace.error(Trace.UNEXPECTED_TOKEN, fqn);
}
String classname = fqn.substring(0, i);
mMethod = (Method) methodCache.get(fqn);
if (mMethod == null) {
String methodname = fqn.substring(i + 1);
Class classinstance = null;
try {
classinstance = Class.forName(classname);
} catch (Exception e) {
throw Trace.error(Trace.FUNCTION_NOT_FOUND,
Trace.Message_Pair, new Object[] {
classname, e
});
}
// public only, but includes those inherited from
// superclasses and superinterfaces. List is unordered.
Method[] methods = classinstance.getMethods();
for (i = 0; i < methods.length; i++) {
Method m = methods[i];
if (m.getName().equals(methodname)
&& Modifier.isStatic(m.getModifiers())) {
mMethod = m;
break;
}
}
Trace.check(mMethod != null, Trace.UNKNOWN_FUNCTION, methodname);
methodCache.put(fqn, mMethod);
}
Class returnClass = mMethod.getReturnType();
if (returnClass.equals(org.hsqldb.result.Result.class)) {
// For now, we can write stored procedures whose
// descriptor explicitly specifies the above return type.
// Later, this will be modified or replaced to provide proper
// support for jdbcCallableStatement OUT mode return parameter,
// multiple results (Result.MULTI etc.)
dataType = Type.OTHER;
} else {
// Now we support the following construction-time return type
// Classes, as specified by the method descriptor:
//
// 1.) any primitive or primitive wrapper type, except Byte(.TYPE),
// Short(.TYPE) and Float(.TYPE) (TBD; narrow if no truncation)
//
// 2.) any primitive array type
//
// 3.) any non-primitive array whose base component implements
// java.io.Serializable
//
// 4.) any class implementing java.io.Serializable, except those
// described in 1.) as currently unsupported
//
// 5.) java.lang.Object
//
// For java.lang.Object, checking is deferred from the construction
// stage to the evaluation stage. In general, for the evaluation
// to succeed, the runtime class of the retrieved Object must be
//
// 1.) any primitive or primitive wrapper type, except Byte(.TYPE),
// Short(.TYPE) and Float(.TYPE) (TBD; narrow if no trunction)
//
// 2.) any primitive array type
// 3.) any non-primitive array whose base component implements
// java.io.Serializable
//
// 4.) any class implementing java.io.Serializable, except those
// described in 1.) as currently unsupported
//
// Additionally, it is possible for the evaluation to succeed under
// an SQL CALL if the runtime Class of the returned Object is not
// from the list above but is from the list below:
//
// 1.) is org.hsqldb.Result
// 2.) is org.hsqldb.jdbc.jdbcResultSet
//
// In these special cases, the statement executor notices the
// types and presents the client with a view the underlying result
// rather than with a view of the object as an opaque scalar value
//
dataType =
Type.getDefaultType(Types.getParameterTypeNr(returnClass));
}
returnClassName =
Types.getFunctionReturnClassName(returnClass.getName());
aArgClasses = mMethod.getParameterTypes();
iArgCount = aArgClasses.length;
argType = new Type[iArgCount];
bArgNullable = new boolean[iArgCount];
for (i = 0; i < aArgClasses.length; i++) {
Class a = aArgClasses[i];
String type = a.getName();
if ((i == 0) && a.equals(Connection.class)) {
// TODO: provide jdbc:default:connection url functionality
//
// only the first parameter can be a Connection
bConnection = true;
} else {
// see discussion above for iReturnType
argType[i] = Type.getDefaultType(Types.getParameterTypeNr(a));
bArgNullable[i] = !a.isPrimitive();
}
}
iSqlArgCount = iArgCount;
if (bConnection) {
iSqlArgCount--;
iSqlArgStart = 1;
} else {
iSqlArgStart = 0;
}
argList = new Expression[iArgCount];
}
public Object getMetaData() {
return null;
}
/**
* Evaluates and returns this Function in the context of the session.<p>
*/
public Object getValue(Session session) throws HsqlException {
switch (funcType) {
case Library.curtime :
return session.getCurrentTime();
case Library.curdate :
return session.getCurrentDate();
case Library.database :
return session.getDatabase().getPath();
case Library.getAutoCommit :
return session.isAutoCommit() ? Boolean.TRUE
: Boolean.FALSE;
case Library.isReadOnlyDatabase :
return session.getDatabase().databaseReadOnly ? Boolean.TRUE
: Boolean.FALSE;
case Library.isReadOnlyConnection :
return session.isReadOnly() ? Boolean.TRUE
: Boolean.FALSE;
case Library.isReadOnlyDatabaseFiles :
return session.getDatabase().isFilesReadOnly() ? Boolean.TRUE
: Boolean.FALSE;
}
Object[] oArg = getArguments(session);
if (oArg == null) {
return null;
}
return getValue(session, oArg);
}
/**
* Evaluates the Function with the given arguments in the session context.
*/
Object getValue(Session session, Object[] arguments) throws HsqlException {
if (bConnection) {
arguments[0] = session.getInternalConnection();
}
try {
Object value = (funcType >= 0)
? Library.invoke(funcType, arguments)
: mMethod.invoke(null, arguments);
return Type.convertJavaToSQLType(value, dataType);
} catch (InvocationTargetException e) {
// thrown by user functions
Throwable t = e.getTargetException();
String s = fullyQualifiedName + " : " + t.toString();
throw Trace.error(Trace.FUNCTION_CALL_ERROR, s);
} catch (IllegalAccessException e) {
// never thrown in this method
throw Trace.error(Trace.FUNCTION_CALL_ERROR);
}
// Library function throw HsqlException
}
private Object[] getArguments(Session session) throws HsqlException {
int i = bConnection ? 1
: 0;
Object[] oArg = new Object[iArgCount];
for (; i < iArgCount; i++) {
Expression e = argList[i];
Object o = null;
if (e != null) {
// no argument: null
o = e.getValue(session, argType[i]);
}
if ((o == null) && !bArgNullable[i]) {
// null argument for primitive datatype: don't call
return null;
}
if (o instanceof JavaObjectData) {
o = ((JavaObjectData) o).getObject();
} else if (o instanceof BinaryData) {
o = ((BinaryData) o).getBytes();
}
oArg[i] = o;
}
return oArg;
}
/**
* returns null if any non-nullable element of values is null
*/
private Object[] getNotNull(Object[] values) throws HsqlException {
int i = bConnection ? 1
: 0;
for (; i < iArgCount; i++) {
Object o = values[i];
if (o == null && !bArgNullable[i]) {
// null argument for primitive datatype: don't call
return null;
}
}
return values;
}
public Object getAggregatedValue(Session session,
Object currValue) throws HsqlException {
Object[] valueArray = (Object[]) currValue;
if (valueArray == null) {
valueArray = new Object[iArgCount];
}
for (int i = 0; i < iArgCount; i++) {
Expression e = argList[i];
if (argList[i] != null) {
if (argList[i].isAggregate()) {
valueArray[i] = argType[i].convertToType(session,
e.getAggregatedValue(session, valueArray[i]),
e.dataType);
} else {
valueArray[i] = e.getValue(session, argType[i]);
}
}
}
valueArray = getNotNull(valueArray);
if (valueArray == null) {
return null;
}
return getValue(session, valueArray);
}
public Object updateAggregatingValue(Session session,
Object currValue)
throws HsqlException {
Object[] valueArray = (Object[]) currValue;
if (valueArray == null) {
valueArray = new Object[iArgCount];
}
for (int i = 0; i < iArgCount; i++) {
Expression e = argList[i];
if (argList[i] != null) {
valueArray[i] = e.updateAggregatingValue(session,
valueArray[i]);
}
}
return valueArray;
}
/**
* Returns the number of parameters that must be supplied to evaluate
* this Function object from SQL. <p>
*
* This value may be different than the number of parameters of the
* underlying Java method. This is because HSQLDB automatically detects
* if the first parameter is of type java.sql.Connection, and supplies a
* live Connection object constructed from the evaluating session context
* if so.
*/
int getArgCount() {
return iSqlArgCount;
}
/**
* Resolves the type of this expression and performs certain
* transformations and optimisations of the expression tree.
*/
public void resolveTypes(
Expression parent) throws HsqlException {
for (int i = iSqlArgStart; i < iArgCount; i++) {
Expression e = argList[i];
if (e != null) {
if (e.isParam()) {
e.setDataType(argType[i]);
e.nullability = getArgNullability(i);
e.valueClassName = getArgClass(i).getName();
} else {
e.resolveTypes(this);
}
}
}
}
/**
* Returns the type of the argument at the specified
* offset in this Function object's paramter list. <p>
*/
Type getArgType(int i) {
return argType[i];
}
/**
* Binds the specified expression to the specified position in this
* Function object's parameter list. <p>
*/
void setArgument(int i, Expression e) {
argList[iSqlArgStart + i] = e;
if (e != null && e.isAggregate()) {
aggregateSpec = AGGREGATE_SELF;
}
}
public boolean equals(Object other) {
if (other == this) {
return true;
}
if (other instanceof Function
&& funcType == ((Function) other).funcType) {
return super.equals(other);
}
return false;
}
/**
* Returns a DDL representation of this object. <p>
*/
public String getDDL() {
StringBuffer sb = new StringBuffer();
// get the name as used by the CHECK statement
String ddlName = name;
if (fullyQualifiedName.equals(name)) {
ddlName = StringConverter.toQuotedString(name, '"', true);
}
sb.append(ddlName).append('(');
for (int i = iSqlArgStart; i < argList.length; i++) {
sb.append(argList[i].getDDL());
if (i < argList.length - 1) {
sb.append(',');
}
}
sb.append(')');
return sb.toString();
}
/**
* Returns a String representation of this object. <p>
*/
public String describe(Session session) {
StringBuffer sb = new StringBuffer();
sb.append("FUNCTION ").append("=[\n");
sb.append(fullyQualifiedName).append("(");
for (int i = iSqlArgStart; i < argList.length; i++) {
sb.append("[").append(argList[i].describe(session)).append("]");
}
sb.append(") returns ").append(dataType.getNameString());
sb.append("]\n");
return sb.toString();
}
/**
* Returns the Java Class of the object returned by getValue(). <p>
*/
String getValueClassName() {
return returnClassName;
}
/**
* Returns the Java Class of the i'th argument. <p>
*/
Class getArgClass(int i) {
return aArgClasses[i];
}
/**
* Returns the SQL nullability code of the i'th argument. <p>
*/
byte getArgNullability(int i) {
return bArgNullable[i] ? Expression.NULLABLE
: Expression.NO_NULLS;
}
public Method getMethod() {
return mMethod;
}
public String getFullyQualifiedJavaName() {
return fullyQualifiedName;
}
}
The table below shows all metrics for Function.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 65.00 | Number of blocks | |
| BLOCK_COMMENT | 64.00 | Number of block comment lines | |
| COMMENTS | 216.00 | Comment lines | |
| COMMENT_DENSITY | 0.93 | Comment density | |
| COMPARISONS | 42.00 | Number of comparison operators | |
| CYCLOMATIC | 79.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 22.00 | Comments in declarations | |
| DOC_COMMENT | 85.00 | Number of javadoc comment lines | |
| ELOC | 233.00 | Effective lines of code | |
| EXEC_COMMENTS | 13.00 | Comments in executable code | |
| EXITS | 59.00 | Procedure exits | |
| FUNCTIONS | 20.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 81.43 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 73.00 | Interface complexity | |
| JAVA0001 | 0.00 | JAVA0001 Package name does not contain only lower case letters | |
| JAVA0002 | 0.00 | JAVA0002 Package name does not begin with a top level domain name or country code | |
| JAVA0003 | 0.00 | JAVA0003 Minimize use of on-demand (.*) imports | |
| JAVA0004 | 0.00 | JAVA0004 Unnecessary import from java.lang | |
| JAVA0005 | 0.00 | JAVA0005 Imports not in specified order | |
| JAVA0006 | 0.00 | JAVA0006 Empty finally block | |
| JAVA0007 | 0.00 | JAVA0007 Should not declare public field | |
| JAVA0008 | 0.00 | JAVA0008 Empty catch block | |
| JAVA0009 | 0.00 | JAVA0009 Protected member in final class | |
| JAVA0010 | 0.00 | JAVA0010 Non-instantiable class does not contain a non-private static member | |
| JAVA0011 | 0.00 | JAVA0011 Abstract class does not contain an abstract method | |
| JAVA0012 | 0.00 | JAVA0012 Non-constructor method with same name as declaring class | |
| JAVA0013 | 0.00 | JAVA0013 Non-blank final field is not static | |
| JAVA0014 | 0.00 | JAVA0014 Class with only static members has non-private constructor | |
| JAVA0015 | 0.00 | JAVA0015 Package class contains public nested type | |
| JAVA0016 | 0.00 | JAVA0016 Abstract class contains public constructor | |
| JAVA0017 | 0.00 | JAVA0017 Class name does not have required form | |
| JAVA0018 | 0.00 | JAVA0018 Method name does not have required form | |
| JAVA0019 | 0.00 | JAVA0019 Interface name does not have required form | |
| JAVA0020 | 0.00 | JAVA0020 Field name does not have required form | |
| JAVA0021 | 0.00 | JAVA0021 Interface method name does not have required form | |
| JAVA0022 | 0.00 | JAVA0022 Static final field name does not have required form | |
| JAVA0023 | 0.00 | JAVA0023 Empty finalize method | |
| JAVA0024 | 0.00 | JAVA0024 Empty class | |
| JAVA0025 | 0.00 | JAVA0025 Method override is empty | |
| JAVA0026 | 0.00 | JAVA0026 Finalize method with parameters | |
| JAVA0029 | 0.00 | JAVA0029 Private method not used | |
| JAVA0030 | 0.00 | JAVA0030 Private field not used | |
| JAVA0031 | 0.00 | JAVA0031 Case statement not properly closed | |
| JAVA0032 | 1.00 | 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 | 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 | 1.00 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| JAVA0101 | 0.00 | JAVA0101 Unnecessary modifier for field in interface | |
| JAVA0102 | 0.00 | JAVA0102 Last statement in finalize() not super.finalize() | |
| JAVA0103 | 0.00 | JAVA0103 Explicit call to finalize() | |
| JAVA0104 | 0.00 | JAVA0104 finalize() only calls super.finalize() | |
| JAVA0105 | 0.00 | JAVA0105 Duplicate import declaration | |
| JAVA0106 | 0.00 | JAVA0106 Unnecessary import from current package | |
| JAVA0108 | 8.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 0.00 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0110 | 10.00 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0111 | 0.00 | JAVA0111 Incorrect javadoc: @return tag for void method | |
| JAVA0112 | 0.00 | JAVA0112 Incorrect javadoc: no exception 'exception' in throws | |
| JAVA0113 | 0.00 | JAVA0113 Incorrect javadoc: no @author tag | |
| JAVA0114 | 0.00 | JAVA0114 Incorrect javadoc: no @version tag | |
| JAVA0115 | 4.00 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0116 | 0.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 2.00 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0118 | 0.00 | JAVA0118 Missing javadoc: type 'type' | |
| JAVA0119 | 0.00 | JAVA0119 Control variable changed within body of for loop | |
| JAVA0123 | 2.00 | 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 | 1.00 | 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 | 1.00 | 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 | 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 | 0.00 | JAVA0254 Use enhanced for loop construct instead of Iterator | |
| JAVA0255 | 0.00 | JAVA0255 Result of method invocation not used | |
| JAVA0256 | 0.00 | JAVA0256 Assignment of external collection/array to field | |
| JAVA0257 | 0.00 | JAVA0257 Use of 'Constant Interface' anti-pattern | |
| JAVA0258 | 0.00 | JAVA0258 Implement Iterable for foreach compatibility | |
| JAVA0259 | 0.00 | JAVA0259 Return of collection/array field | |
| JAVA0260 | 0.00 | JAVA0260 Use 'enum' instead of Enumerated Type pattern | |
| JAVA0261 | 0.00 | JAVA0261 Use specialized Enum collection types | |
| JAVA0262 | 0.00 | JAVA0262 Use of char in integer context | |
| JAVA0263 | 0.00 | JAVA0263 Long literal ends with 'l' instead of 'L' | |
| JAVA0264 | 0.00 | JAVA0264 Integer math in long context - check for overflow | |
| JAVA0265 | 0.00 | JAVA0265 Use of Throwable.printStackTrace() | |
| JAVA0266 | 0.00 | JAVA0266 Use of System.out | |
| JAVA0267 | 0.00 | JAVA0267 Use of System.err | |
| JAVA0269 | 0.00 | JAVA0269 Contents of StringBuffer never used | |
| JAVA0270 | 0.00 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
| JAVA0271 | 0.00 | JAVA0271 Minimize use of on-demand (.*) static imports | |
| JAVA0272 | 0.00 | JAVA0272 Thread.run() called | |
| JAVA0273 | 0.00 | JAVA0273 Non-final derivative of Thread calls start() in constructor | |
| JAVA0274 | 0.00 | JAVA0274 Serializable class has a synchronized readObject() | |
| JAVA0275 | 0.00 | JAVA0275 Serializable class has a synchronized writeObject() and no other synchronized methods | |
| JAVA0276 | 0.00 | JAVA0276 Unnecessary use of String constructor | |
| JAVA0277 | 0.00 | JAVA0277 Iterator.next() implementation does not throw NoSuchElementException | |
| JAVA0278 | 0.00 | JAVA0278 Unnecessary use of Boolean constructor | |
| JAVA0279 | 0.00 | JAVA0279 Serialization method readObject or readObjectNoData calls an overridable method | |
| JAVA0280 | 0.00 | JAVA0280 IllegalMonitorStateException caught | |
| JAVA0281 | 0.00 | JAVA0281 Iterator.next() not called in loop | |
| JAVA0282 | 0.00 | JAVA0282 Call to Iterator.next() in loop which does not test Iterator.hasNext() | |
| JAVA0283 | 0.00 | JAVA0283 Control variable not updated in loop body | |
| JAVA0284 | 0.00 | JAVA0284 Explicit garbage collection | |
| JAVA0285 | 0.00 | JAVA0285 Dereference of potentially null variable | |
| JAVA0286 | 0.00 | JAVA0286 Dereference of null variable | |
| JAVA0287 | 0.00 | JAVA0287 Unnecessary null check | |
| JAVA0288 | 0.00 | JAVA0288 Inconsistent null check | |
| LINES | 626.00 | Number of lines in the source file | |
| LINE_COMMENT | 67.00 | Number of line comments | |
| LOC | 291.00 | Lines of code | |
| LOGICAL_LINES | 154.00 | Number of statements | |
| LOOPS | 9.00 | Number of loops | |
| NEST_DEPTH | 4.00 | Maximum nesting depth | |
| OPERANDS | 677.00 | Number of operands | |
| OPERATORS | 1244.00 | Number of operators | |
| PARAMS | 19.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 1921.00 | Halstead program length | |
| PROGRAM_VOCAB | 263.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 54.00 | Number of return points from functions | |
| SIZE | 21295.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 212.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 51.00 | Number of unique operators | |
| WHITESPACE | 119.00 | Number of whitespace lines | |