JDBCStore.java
| Index Score | ||
|---|---|---|
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org.apache.slide.store.impl.rdbms |
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Jakarta Slide |
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 | |
|---|---|---|
| EXEC_COMMENTS | Comments in executable code |  |
| JAVA0177 | JAVA0177 Variable declaration missing initializer | |
| JAVA0034 | JAVA0034 Missing braces in if statement | |
| SIZE | Size of the file in bytes | |
| LINE_COMMENT | Number of line comments | |
| ELOC | Effective lines of code | |
| JAVA0143 | JAVA0143 Synchronized method | |
| JAVA0166 | JAVA0166 Generic exception caught | |
| BLOCKS | Number of blocks | |
| UNIQUE_OPERATORS | Number of unique operators | |
| PROGRAM_VOLUME | Halstead program volume | |
| DECL_COMMENTS | Comments in declarations | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0285 | JAVA0285 Dereference of potentially null variable | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| LOC | Lines of code | |
| UNIQUE_OPERANDS | Number of unique operands | |
| LOGICAL_LINES | Number of statements | |
| LOOPS | Number of loops | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0254 | JAVA0254 Use enhanced for loop construct instead of Iterator | |
| INTERFACE_COMPLEXITY | Interface complexity | |
| PARAMS | Number of formal parameter declarations | |
| LINES | Number of lines in the source file | |
| FUNCTIONS | Number of function declarations | |
| RETURNS | Number of return points from functions | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
| OPERANDS | Number of operands | |
| PROGRAM_LENGTH | Halstead program length | |
/*
* $Header$
* $Revision: 208628 $
* $Date: 2005-06-13 08:55:20 -0400 (Mon, 13 Jun 2005) $
*
* ====================================================================
*
* Copyright 1999-2005 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.apache.slide.store.impl.rdbms;
import java.sql.Connection;
import java.sql.Driver;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.Properties;
import org.apache.commons.dbcp.BasicDataSource;
import org.apache.commons.dbcp.BasicDataSourceFactory;
import org.apache.slide.common.NamespaceAccessToken;
import org.apache.slide.common.ServiceInitializationFailedException;
import org.apache.slide.common.ServiceParameterErrorException;
import org.apache.slide.common.ServiceParameterMissingException;
import org.apache.slide.common.ServiceDisconnectionFailedException;
import org.apache.slide.common.ServiceConnectionFailedException;
import org.apache.slide.store.ContentStore;
import org.apache.slide.store.LockStore;
import org.apache.slide.store.NodeStore;
import org.apache.slide.store.RevisionDescriptorStore;
import org.apache.slide.store.RevisionDescriptorsStore;
import org.apache.slide.store.SecurityStore;
import org.apache.slide.util.logger.Logger;
/**
* Store implementation that is able to store all information (like structure,
* locks and content) in a JDBC-aware relational database system.
* <p>
* Set the {@link #CONF_KEY_DBCP_ENABLED} configuration attribute to true
* to enable Commons DBCP connection pooling.
*
* @version $Revision: 208628 $
* @see <a href="http://jakarta.apache.org/slide/howto-j2eestore.html">Slide Configuration HOWTO</a>
* for complete configuration information
*/
public class JDBCStore
extends AbstractRDBMSStore
implements LockStore, NodeStore, RevisionDescriptorsStore, RevisionDescriptorStore, SecurityStore, ContentStore {
/** Configuration key: "true"=use Commons DBCP connection pooling. */
protected static final String CONF_KEY_DBCP_ENABLED = "dbcpPooling";
/**
* Configuration key prefix for all Commons DBCP settings.
* To pass properties directly to the underlying JDBC-driver,
* use the <b>{@link #CONF_KEY_DBCP_PREFIX}.connectionProperties</b>
* configuration property in your Slide domain configuration,
* set the value to semicolon-separated name=value pairs
* (eg "cachePreparedStatements=true;rowPrefetchSize=50;foo=bar").
* @see <a href="http://jakarta.apache.org/commons/dbcp/configuration.html">
* Commons DBCP website</a> for info about possible settings
*/
protected static final String CONF_KEY_DBCP_PREFIX = "dbcp.";
protected static final String TRANSACTION_NONE = "NONE";
protected static final String TRANSACTION_READ_UNCOMMITTED = "READ_UNCOMMITTED";
protected static final String TRANSACTION_READ_COMMITTED = "READ_COMMITTED";
protected static final String TRANSACTION_REPEATABLE_READ = "REPEATABLE_READ";
protected static final String TRANSACTION_SERIALIZABLE = "SERIALIZABLE";
public static final int DEFAUT_ISOLATION_LEVEL = Connection.TRANSACTION_READ_COMMITTED;
protected static String isolationLevelToString(int isolationLevel) {
final String levelString;
switch (isolationLevel) {
case Connection.TRANSACTION_NONE :
levelString = TRANSACTION_NONE;
break;
case Connection.TRANSACTION_READ_UNCOMMITTED :
levelString = TRANSACTION_READ_UNCOMMITTED;
break;
case Connection.TRANSACTION_READ_COMMITTED :
levelString = TRANSACTION_READ_COMMITTED;
break;
case Connection.TRANSACTION_REPEATABLE_READ :
levelString = TRANSACTION_REPEATABLE_READ;
break;
case Connection.TRANSACTION_SERIALIZABLE :
levelString = TRANSACTION_SERIALIZABLE;
break;
default :
levelString = "UNKNOWN";
break;
}
return levelString;
}
protected static int stringToIsolationLevelToString(String levelString) {
final int transactionIsolationLevel;
if (TRANSACTION_NONE.equals(levelString)) {
transactionIsolationLevel = Connection.TRANSACTION_NONE;
} else if (TRANSACTION_READ_UNCOMMITTED.equals(levelString)) {
transactionIsolationLevel = Connection.TRANSACTION_READ_UNCOMMITTED;
} else if (TRANSACTION_READ_COMMITTED.equals(levelString)) {
transactionIsolationLevel = Connection.TRANSACTION_READ_COMMITTED;
} else if (TRANSACTION_REPEATABLE_READ.equals(levelString)) {
transactionIsolationLevel = Connection.TRANSACTION_REPEATABLE_READ;
} else if (TRANSACTION_SERIALIZABLE.equals(levelString)) {
transactionIsolationLevel = Connection.TRANSACTION_SERIALIZABLE;
} else {
transactionIsolationLevel = -1;
}
return transactionIsolationLevel;
}
// ----------------------------------------------------- Instance Variables
/** JDBC driver class name. */
protected String driver;
/** JDBC connection URL. */
protected String url;
/** Database user-name. */
protected String user;
/** Database password. */
protected String password;
/** Transaction isolation level. */
protected int isolationLevel;
/** Switch for enabling Commons DBCP connection pooling. */
protected boolean useDbcpPooling;
/** Properties set from Store configuration, to be used with DBCP. */
protected Properties dbcpProperties;
/** Connection pool DataSource (set only if using Commons DBCP). */
protected BasicDataSource dbcpDataSource;
// -------------------------------------------------------- Service Methods
/**
* Initializes the data source with a set of parameters.
*
* @param parameters a Hashtable containing the parameters' name and
* associated value
* @exception ServiceParameterErrorException a service parameter holds an
* invalid value
* @exception ServiceParameterMissingException a required parameter is
* missing
*/
public void setParameters(Hashtable parameters)
throws ServiceParameterErrorException, ServiceParameterMissingException {
String value;
// Driver classname
value = (String) parameters.get("driver");
if (value == null) {
throw new ServiceParameterMissingException(this, "driver");
} else {
driver = value;
}
// Connection url
value = (String) parameters.get("url");
if (value == null) {
throw new ServiceParameterMissingException(this, "url");
} else {
url = value;
}
// User name
user = "";
value = (String) parameters.get("user");
if (value != null) {
user = value;
}
// Password
password = "";
value = (String) parameters.get("password");
if (value != null) {
password = value;
}
// Transaction isolation level
isolationLevel = DEFAUT_ISOLATION_LEVEL;
value = (String) parameters.get("isolation");
if (value != null) {
isolationLevel = stringToIsolationLevelToString(value);
if (isolationLevel == -1) {
getLogger().log(
"Could not set isolation level '"
+ value
+ "', allowed levels are "
+ TRANSACTION_NONE
+ ", "
+ TRANSACTION_READ_UNCOMMITTED
+ ", "
+ TRANSACTION_READ_COMMITTED
+ ", "
+ TRANSACTION_REPEATABLE_READ
+ ", "
+ TRANSACTION_SERIALIZABLE,
LOG_CHANNEL,
Logger.WARNING);
isolationLevel = DEFAUT_ISOLATION_LEVEL;
}
}
// Connection pooling
useDbcpPooling = false;
value = (String) parameters.get(CONF_KEY_DBCP_ENABLED);
if (value != null) {
useDbcpPooling = "true".equals(value);
}
if (useDbcpPooling) {
// Set up configuration properties to be used with Commons DBCP
dbcpProperties = getDbcpPoolProperties(parameters);
// Add driver and logon information
dbcpProperties.put("driverClassName", driver);
dbcpProperties.put("url", url);
dbcpProperties.put("username", user);
dbcpProperties.put("password", password);
// Set TX isolation level
final String isolationLevelString;
isolationLevelString = isolationLevelToString(isolationLevel);
dbcpProperties.put("defaultTransactionIsolation",
isolationLevelString);
// Turn off autocommit
dbcpProperties.put("defaultAutoCommit",
String.valueOf(Boolean.FALSE));
}
super.setParameters(parameters);
}
/**
* Initializes this store.
* <p/>
* If Commons DBCP is used, initialization is done by:
* <ol>
* <li>Loading JDBC-driver class (and running static initializers)</li>
* </ol>
* DBCP will handled DriverManager registration internally, which will
* (together with further initialization of Connection pool) occur in
* the {@link #connect} method.
* <p/>
* Otherwise (ie not using DBCP), initialization is done by:
* <ol>
* <li>Loading JDBC-driver class (and running static initializers)</li>
* <li>Instantiating Driver instance</li>
* <li>Driver registration in the JDBC DriverManager</li>
* </ol>
*
* @exception ServiceInitializationFailedException if JDBC driver
* classloading or registration fails
*/
public synchronized void initialize(NamespaceAccessToken token) throws ServiceInitializationFailedException {
// XXX might be done already in setParameter
if (!alreadyInitialized) {
try {
// Load driver class and force static init
getLogger().log("Loading and registering driver '" + driver + "'", LOG_CHANNEL, Logger.INFO);
final ClassLoader cl = Thread.currentThread().getContextClassLoader();
final Class driverClass = Class.forName(driver, true, cl);
// Use Commons DBCP pooling if enabled
if (useDbcpPooling) {
getLogger().log("Using DBCP pooling", LOG_CHANNEL, Logger.INFO);
} else {
// Register Driver instance with JDBC DriverManager
final Driver driverInstance = (Driver) driverClass.newInstance();
DriverManager.registerDriver(driverInstance);
getLogger().log("Not using DBCP pooling", LOG_CHANNEL, Logger.WARNING);
}
} catch (Exception e) {
getLogger().log(
"Loading and registering driver '" + driver + "' failed (" + e.getMessage() + ")",
LOG_CHANNEL,
Logger.ERROR);
throw new ServiceInitializationFailedException(this, e);
} finally {
alreadyInitialized = true;
}
}
}
public void connect() throws ServiceConnectionFailedException {
super.connect();
if (useDbcpPooling) {
try {
dbcpDataSource = (BasicDataSource)
BasicDataSourceFactory.createDataSource(dbcpProperties);
// The BasicDataSource has lazy initialization
// borrowing a connection will start the DataSource
// and make sure it is configured correctly.
final Connection conn = dbcpDataSource.getConnection();
conn.close();
} catch (Exception e) {
getLogger().log(
"Initialization of connection pool failed ("
+ e.getMessage() + ")",
LOG_CHANNEL, Logger.ERROR);
throw new ServiceConnectionFailedException(this, e);
} finally {
logConnectionPoolStatistics();
}
}
}
public boolean isConnected() {
if (useDbcpPooling) {
return dbcpDataSource != null;
}
return super.isConnected();
}
public void disconnect() throws ServiceDisconnectionFailedException {
if (useDbcpPooling) {
if (dbcpDataSource != null) {
try {
dbcpDataSource.close();
} catch (SQLException e) {
getLogger().log(
"Decomissioning of connection pool failed ("
+ e.getMessage() + ")",
LOG_CHANNEL, Logger.ERROR);
throw new ServiceDisconnectionFailedException(this, e);
}
dbcpDataSource = null;
}
}
super.disconnect();
}
protected Connection getNewConnection() throws SQLException {
final Connection connection;
if (useDbcpPooling) {
try {
connection = dbcpDataSource.getConnection();
} catch (SQLException e) {
getLogger().log("Could not create connection. Reason: " + e, LOG_CHANNEL, Logger.EMERGENCY);
throw e;
} finally {
logConnectionPoolStatistics();
}
} else {
try {
connection = DriverManager.getConnection(url, user, password);
} catch (SQLException e) {
getLogger().log("Could not create connection. Reason: " + e, LOG_CHANNEL, Logger.EMERGENCY);
throw e;
}
try {
if (connection.getTransactionIsolation() != isolationLevel) {
connection.setTransactionIsolation(isolationLevel);
}
} catch (SQLException e) {
getLogger().log(
"Could not set isolation level '" + isolationLevelToString(isolationLevel) + "'. Reason: " + e,
LOG_CHANNEL,
Logger.WARNING);
}
if (connection.getAutoCommit()) {
connection.setAutoCommit(false);
}
}
return connection;
}
protected boolean includeBranchInXid() {
return false;
}
/**
* Returns properties to be used with Commons DBCP BasicDataSource.
*
* @param parameters the configuration parameters for this store
* @return properties to pass to the DBCP datasource, set up
* according to store configuration parameters (never null)
*/
protected Properties getDbcpPoolProperties(Hashtable parameters) {
final Properties props = new Properties();
if (parameters == null) {
return props;
}
// Set all DBCP properties
final int prefixSkipchars = CONF_KEY_DBCP_PREFIX.length();
final Iterator keyIter = parameters.keySet().iterator();
while (keyIter.hasNext()) {
final String key = String.valueOf(keyIter.next());
if (key.startsWith(CONF_KEY_DBCP_PREFIX)) {
final String property = key.substring(prefixSkipchars);
final Object value = parameters.get(key);
if (value != null) {
props.put(property, value.toString());
}
}
}
int intValue = -2; // use -2, since -1 and 0 are magic numbers already
// Old maxActive setting ("maxPooledConnections") have priority
final Object value = parameters.get("maxPooledConnections");
if (value != null) {
try {
intValue = Integer.parseInt(value.toString());
} catch (NumberFormatException e) {
getLogger().log("Could not parse configuration setting " +
"maxPooledConnections, parameter must be integer",
LOG_CHANNEL,
Logger.WARNING);
}
}
if (intValue > -2) {
getLogger().log("The maxPooledConnections configuration " +
"attribute is deprecated, please use " +
CONF_KEY_DBCP_PREFIX + "maxActive instead.",
LOG_CHANNEL,
Logger.WARNING);
props.put("maxActive", value.toString());
}
return props;
}
/**
* Log statistics for Connection pool
* (when using Commons DBCP and log level DEBUG).
*/
protected void logConnectionPoolStatistics() {
// Avoid String concatenation if message is not going to be logged
if (useDbcpPooling && getLogger().getLoggerLevel(LOG_CHANNEL) >= Logger.DEBUG) {
getLogger().log("Connection pool stats: active: " +
dbcpDataSource.getNumActive() + " (max: " +
dbcpDataSource.getMaxActive() + "), idle: " +
dbcpDataSource.getNumIdle() + "(max: " +
dbcpDataSource.getMaxIdle() + ")",
LOG_CHANNEL, Logger.DEBUG);
}
}
}
The table below shows all metrics for JDBCStore.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 62.00 | Number of blocks | |
| BLOCK_COMMENT | 22.00 | Number of block comment lines | |
| COMMENTS | 116.00 | Comment lines | |
| COMMENT_DENSITY | 0.45 | Comment density | |
| COMPARISONS | 31.00 | Number of comparison operators | |
| CYCLOMATIC | 54.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 18.00 | Comments in declarations | |
| DOC_COMMENT | 72.00 | Number of javadoc comment lines | |
| ELOC | 259.00 | Effective lines of code | |
| EXEC_COMMENTS | 18.00 | Comments in executable code | |
| EXITS | 39.00 | Procedure exits | |
| FUNCTIONS | 11.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 75.93 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 23.00 | 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 | 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 | 1.00 | 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 | 1.00 | JAVA0113 Incorrect javadoc: no @author tag | |
| JAVA0114 | 0.00 | JAVA0114 Incorrect javadoc: no @version tag | |
| JAVA0115 | 0.00 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0116 | 1.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 2.00 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0118 | 0.00 | JAVA0118 Missing javadoc: type 'type' | |
| JAVA0119 | 0.00 | JAVA0119 Control variable changed within body of for loop | |
| JAVA0123 | 0.00 | JAVA0123 Use all three components of for loop | |
| JAVA0125 | 0.00 | JAVA0125 Continue statement with label | |
| JAVA0126 | 0.00 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0128 | 0.00 | JAVA0128 Public constructor in non-public class | |
| JAVA0130 | 0.00 | JAVA0130 Non-static method does not use instance fields | |
| JAVA0131 | 0.00 | JAVA0131 Compatible method does not override base | |
| JAVA0132 | 0.00 | JAVA0132 Method overload with compatible signature | |
| JAVA0133 | 0.00 | JAVA0133 Non-synchronized method overrides synchronized method | |
| JAVA0135 | 0.00 | JAVA0135 Only one of Object.equals and Object.hashCode defined: missing 'method' | |
| JAVA0136 | 0.00 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0137 | 1.00 | JAVA0137 Non-abstract class missing constructor | |
| JAVA0138 | 0.00 | JAVA0138 N parameters defined for method (maximum: M) | |
| JAVA0139 | 0.00 | JAVA0139 Definition of main other than public static void main(java.lang.String[]) | |
| JAVA0141 | 0.00 | JAVA0141 Unnecessary modifier for method in interface | |
| JAVA0143 | 1.00 | 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 | 2.00 | 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 | 5.00 | 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 | 1.00 | 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 | 1.00 | 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 | 474.00 | Number of lines in the source file | |
| LINE_COMMENT | 22.00 | Number of line comments | |
| LOC | 304.00 | Lines of code | |
| LOGICAL_LINES | 145.00 | Number of statements | |
| LOOPS | 1.00 | Number of loops | |
| NEST_DEPTH | 4.00 | Maximum nesting depth | |
| OPERANDS | 626.00 | Number of operands | |
| OPERATORS | 1162.00 | Number of operators | |
| PARAMS | 5.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 1788.00 | Halstead program length | |
| PROGRAM_VOCAB | 251.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 18.00 | Number of return points from functions | |
| SIZE | 18203.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 202.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 49.00 | Number of unique operators | |
| WHITESPACE | 54.00 | Number of whitespace lines | |