TransactionSynchronizationManager.java
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org.springframework.transaction.support |
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Spring Framework |
View: Reasons, Metrics, Source Code
These are the metrics that contribute to the Enerjy Score for this file, ranked by impact. So the metrics listed at the top influence the score to a greater extent that the metrics listed at the bottom.
| Metric | Description | |
|---|---|---|
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws |  |
| DOC_COMMENT | Number of javadoc comment lines | |
| COMMENTS | Comment lines | |
| DECL_COMMENTS | Comments in declarations | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0034 | JAVA0034 Missing braces in if statement | |
| SIZE | Size of the file in bytes | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| PROGRAM_VOLUME | Halstead program volume | |
| JAVA0136 | JAVA0136 N methods defined in class (maximum: M) | |
| LOOPS | Number of loops | |
| LINE_COMMENT | Number of line comments | |
| EXEC_COMMENTS | Comments in executable code | |
| WHITESPACE | Number of whitespace lines | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
/*
* Copyright 2002-2008 the original author or authors.
*
* 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.springframework.transaction.support;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.core.NamedThreadLocal;
import org.springframework.core.OrderComparator;
import org.springframework.util.Assert;
/**
* Central helper that manages resources and transaction synchronizations per thread.
* To be used by resource management code but not by typical application code.
*
* <p>Supports one resource per key without overwriting, that is, a resource needs
* to be removed before a new one can be set for the same key.
* Supports a list of transaction synchronizations if synchronization is active.
*
* <p>Resource management code should check for thread-bound resources, e.g. JDBC
* Connections or Hibernate Sessions, via <code>getResource</code>. Such code is
* normally not supposed to bind resources to threads, as this is the responsibility
* of transaction managers. A further option is to lazily bind on first use if
* transaction synchronization is active, for performing transactions that span
* an arbitrary number of resources.
*
* <p>Transaction synchronization must be activated and deactivated by a transaction
* manager via {@link #initSynchronization()} and {@link #clearSynchronization()}.
* This is automatically supported by {@link AbstractPlatformTransactionManager},
* and thus by all standard Spring transaction managers, such as
* {@link org.springframework.transaction.jta.JtaTransactionManager} and
* {@link org.springframework.jdbc.datasource.DataSourceTransactionManager}.
*
* <p>Resource management code should only register synchronizations when this
* manager is active, which can be checked via {@link #isSynchronizationActive};
* it should perform immediate resource cleanup else. If transaction synchronization
* isn't active, there is either no current transaction, or the transaction manager
* doesn't support transaction synchronization.
*
* <p>Synchronization is for example used to always return the same resources
* within a JTA transaction, e.g. a JDBC Connection or a Hibernate Session for
* any given DataSource or SessionFactory, respectively.
*
* @author Juergen Hoeller
* @since 02.06.2003
* @see #isSynchronizationActive
* @see #registerSynchronization
* @see TransactionSynchronization
* @see AbstractPlatformTransactionManager#setTransactionSynchronization
* @see org.springframework.transaction.jta.JtaTransactionManager
* @see org.springframework.jdbc.datasource.DataSourceTransactionManager
* @see org.springframework.jdbc.datasource.DataSourceUtils#getConnection
*/
public abstract class TransactionSynchronizationManager {
private static final Log logger = LogFactory.getLog(TransactionSynchronizationManager.class);
private static final Comparator synchronizationComparator = new OrderComparator();
private static final ThreadLocal resources =
new NamedThreadLocal("Transactional resources");
private static final ThreadLocal synchronizations =
new NamedThreadLocal("Transaction synchronizations");
private static final ThreadLocal currentTransactionName =
new NamedThreadLocal("Current transaction name");
private static final ThreadLocal currentTransactionReadOnly =
new NamedThreadLocal("Current transaction read-only status");
private static final ThreadLocal currentTransactionIsolationLevel =
new NamedThreadLocal("Current transaction isolation level");
private static final ThreadLocal actualTransactionActive =
new NamedThreadLocal("Actual transaction active");
//-------------------------------------------------------------------------
// Management of transaction-associated resource handles
//-------------------------------------------------------------------------
/**
* Return all resources that are bound to the current thread.
* <p>Mainly for debugging purposes. Resource managers should always invoke
* <code>hasResource</code> for a specific resource key that they are interested in.
* @return a Map with resource keys (usually the resource factory) and resource
* values (usually the active resource object), or an empty Map if there are
* currently no resources bound
* @see #hasResource
*/
public static Map getResourceMap() {
Map map = (Map) resources.get();
return (map != null ? Collections.unmodifiableMap(map) : Collections.EMPTY_MAP);
}
/**
* Check if there is a resource for the given key bound to the current thread.
* @param key the key to check (usually the resource factory)
* @return if there is a value bound to the current thread
* @see ResourceTransactionManager#getResourceFactory()
*/
public static boolean hasResource(Object key) {
Object actualKey = TransactionSynchronizationUtils.unwrapResourceIfNecessary(key);
Object value = doGetResource(actualKey);
return (value != null);
}
/**
* Retrieve a resource for the given key that is bound to the current thread.
* @param key the key to check (usually the resource factory)
* @return a value bound to the current thread (usually the active
* resource object), or <code>null</code> if none
* @see ResourceTransactionManager#getResourceFactory()
*/
public static Object getResource(Object key) {
Object actualKey = TransactionSynchronizationUtils.unwrapResourceIfNecessary(key);
Object value = doGetResource(actualKey);
if (value != null && logger.isDebugEnabled()) {
logger.debug("Retrieved value [" + value + "] for key [" + actualKey + "] bound to thread [" +
Thread.currentThread().getName() + "]");
}
return value;
}
/**
* Actually check the value of the resource that is bound for the given key.
*/
private static Object doGetResource(Object actualKey) {
Map map = (Map) resources.get();
if (map == null) {
return null;
}
Object value = map.get(actualKey);
// Transparently remove ResourceHolder that was marked as void...
if (value instanceof ResourceHolder && ((ResourceHolder) value).isVoid()) {
map.remove(actualKey);
value = null;
}
return value;
}
/**
* Bind the given resource for the given key to the current thread.
* @param key the key to bind the value to (usually the resource factory)
* @param value the value to bind (usually the active resource object)
* @throws IllegalStateException if there is already a value bound to the thread
* @see ResourceTransactionManager#getResourceFactory()
*/
public static void bindResource(Object key, Object value) throws IllegalStateException {
Object actualKey = TransactionSynchronizationUtils.unwrapResourceIfNecessary(key);
Assert.notNull(value, "Value must not be null");
Map map = (Map) resources.get();
// set ThreadLocal Map if none found
if (map == null) {
map = new HashMap();
resources.set(map);
}
if (map.put(actualKey, value) != null) {
throw new IllegalStateException("Already value [" + map.get(actualKey) + "] for key [" +
actualKey + "] bound to thread [" + Thread.currentThread().getName() + "]");
}
if (logger.isDebugEnabled()) {
logger.debug("Bound value [" + value + "] for key [" + actualKey + "] to thread [" +
Thread.currentThread().getName() + "]");
}
}
/**
* Unbind a resource for the given key from the current thread.
* @param key the key to unbind (usually the resource factory)
* @return the previously bound value (usually the active resource object)
* @throws IllegalStateException if there is no value bound to the thread
* @see ResourceTransactionManager#getResourceFactory()
*/
public static Object unbindResource(Object key) throws IllegalStateException {
Object actualKey = TransactionSynchronizationUtils.unwrapResourceIfNecessary(key);
Object value = doUnbindResource(actualKey);
if (value == null) {
throw new IllegalStateException(
"No value for key [" + actualKey + "] bound to thread [" + Thread.currentThread().getName() + "]");
}
return value;
}
/**
* Unbind a resource for the given key from the current thread.
* @param key the key to unbind (usually the resource factory)
* @return the previously bound value, or <code>null</code> if none bound
*/
public static Object unbindResourceIfPossible(Object key) {
Object actualKey = TransactionSynchronizationUtils.unwrapResourceIfNecessary(key);
return doUnbindResource(actualKey);
}
/**
* Actually remove the value of the resource that is bound for the given key.
*/
private static Object doUnbindResource(Object actualKey) {
Map map = (Map) resources.get();
if (map == null) {
return null;
}
Object value = map.remove(actualKey);
// Remove entire ThreadLocal if empty...
if (map.isEmpty()) {
resources.set(null);
}
if (value != null && logger.isDebugEnabled()) {
logger.debug("Removed value [" + value + "] for key [" + actualKey + "] from thread [" +
Thread.currentThread().getName() + "]");
}
return value;
}
//-------------------------------------------------------------------------
// Management of transaction synchronizations
//-------------------------------------------------------------------------
/**
* Return if transaction synchronization is active for the current thread.
* Can be called before register to avoid unnecessary instance creation.
* @see #registerSynchronization
*/
public static boolean isSynchronizationActive() {
return (synchronizations.get() != null);
}
/**
* Activate transaction synchronization for the current thread.
* Called by a transaction manager on transaction begin.
* @throws IllegalStateException if synchronization is already active
*/
public static void initSynchronization() throws IllegalStateException {
if (isSynchronizationActive()) {
throw new IllegalStateException("Cannot activate transaction synchronization - already active");
}
logger.debug("Initializing transaction synchronization");
synchronizations.set(new LinkedList());
}
/**
* Register a new transaction synchronization for the current thread.
* Typically called by resource management code.
* <p>Note that synchronizations can implement the
* {@link org.springframework.core.Ordered} interface.
* They will be executed in an order according to their order value (if any).
* @param synchronization the synchronization object to register
* @throws IllegalStateException if transaction synchronization is not active
* @see org.springframework.core.Ordered
*/
public static void registerSynchronization(TransactionSynchronization synchronization)
throws IllegalStateException {
Assert.notNull(synchronization, "TransactionSynchronization must not be null");
if (!isSynchronizationActive()) {
throw new IllegalStateException("Transaction synchronization is not active");
}
List synchs = (List) synchronizations.get();
synchs.add(synchronization);
}
/**
* Return an unmodifiable snapshot list of all registered synchronizations
* for the current thread.
* @return unmodifiable List of TransactionSynchronization instances
* @throws IllegalStateException if synchronization is not active
* @see TransactionSynchronization
*/
public static List getSynchronizations() throws IllegalStateException {
if (!isSynchronizationActive()) {
throw new IllegalStateException("Transaction synchronization is not active");
}
List synchs = (List) synchronizations.get();
// Sort lazily here, not in registerSynchronization.
Collections.sort(synchs, synchronizationComparator);
// Return unmodifiable snapshot, to avoid ConcurrentModificationExceptions
// while iterating and invoking synchronization callbacks that in turn
// might register further synchronizations.
return Collections.unmodifiableList(new ArrayList(synchs));
}
/**
* Deactivate transaction synchronization for the current thread.
* Called by the transaction manager on transaction cleanup.
* @throws IllegalStateException if synchronization is not active
*/
public static void clearSynchronization() throws IllegalStateException {
if (!isSynchronizationActive()) {
throw new IllegalStateException("Cannot deactivate transaction synchronization - not active");
}
logger.debug("Clearing transaction synchronization");
synchronizations.set(null);
}
//-------------------------------------------------------------------------
// Exposure of transaction characteristics
//-------------------------------------------------------------------------
/**
* Expose the name of the current transaction, if any.
* Called by the transaction manager on transaction begin and on cleanup.
* @param name the name of the transaction, or <code>null</code> to reset it
* @see org.springframework.transaction.TransactionDefinition#getName()
*/
public static void setCurrentTransactionName(String name) {
currentTransactionName.set(name);
}
/**
* Return the name of the current transaction, or <code>null</code> if none set.
* To be called by resource management code for optimizations per use case,
* for example to optimize fetch strategies for specific named transactions.
* @see org.springframework.transaction.TransactionDefinition#getName()
*/
public static String getCurrentTransactionName() {
return (String) currentTransactionName.get();
}
/**
* Expose a read-only flag for the current transaction.
* Called by the transaction manager on transaction begin and on cleanup.
* @param readOnly <code>true</code> to mark the current transaction
* as read-only; <code>false</code> to reset such a read-only marker
* @see org.springframework.transaction.TransactionDefinition#isReadOnly()
*/
public static void setCurrentTransactionReadOnly(boolean readOnly) {
currentTransactionReadOnly.set(readOnly ? Boolean.TRUE : null);
}
/**
* Return whether the current transaction is marked as read-only.
* To be called by resource management code when preparing a newly
* created resource (for example, a Hibernate Session).
* <p>Note that transaction synchronizations receive the read-only flag
* as argument for the <code>beforeCommit</code> callback, to be able
* to suppress change detection on commit. The present method is meant
* to be used for earlier read-only checks, for example to set the
* flush mode of a Hibernate Session to "FlushMode.NEVER" upfront.
* @see org.springframework.transaction.TransactionDefinition#isReadOnly()
* @see TransactionSynchronization#beforeCommit(boolean)
* @see org.hibernate.Session#flush
* @see org.hibernate.Session#setFlushMode
* @see org.hibernate.FlushMode#NEVER
*/
public static boolean isCurrentTransactionReadOnly() {
return (currentTransactionReadOnly.get() != null);
}
/**
* Expose an isolation level for the current transaction.
* Called by the transaction manager on transaction begin and on cleanup.
* @param isolationLevel the isolation level to expose, according to the
* JDBC Connection constants (equivalent to the corresponding Spring
* TransactionDefinition constants), or <code>null</code> to reset it
* @see java.sql.Connection#TRANSACTION_READ_UNCOMMITTED
* @see java.sql.Connection#TRANSACTION_READ_COMMITTED
* @see java.sql.Connection#TRANSACTION_REPEATABLE_READ
* @see java.sql.Connection#TRANSACTION_SERIALIZABLE
* @see org.springframework.transaction.TransactionDefinition#ISOLATION_READ_UNCOMMITTED
* @see org.springframework.transaction.TransactionDefinition#ISOLATION_READ_COMMITTED
* @see org.springframework.transaction.TransactionDefinition#ISOLATION_REPEATABLE_READ
* @see org.springframework.transaction.TransactionDefinition#ISOLATION_SERIALIZABLE
* @see org.springframework.transaction.TransactionDefinition#getIsolationLevel()
*/
public static void setCurrentTransactionIsolationLevel(Integer isolationLevel) {
currentTransactionIsolationLevel.set(isolationLevel);
}
/**
* Return the isolation level for the current transaction, if any.
* To be called by resource management code when preparing a newly
* created resource (for example, a JDBC Connection).
* @return the currently exposed isolation level, according to the
* JDBC Connection constants (equivalent to the corresponding Spring
* TransactionDefinition constants), or <code>null</code> if none
* @see java.sql.Connection#TRANSACTION_READ_UNCOMMITTED
* @see java.sql.Connection#TRANSACTION_READ_COMMITTED
* @see java.sql.Connection#TRANSACTION_REPEATABLE_READ
* @see java.sql.Connection#TRANSACTION_SERIALIZABLE
* @see org.springframework.transaction.TransactionDefinition#ISOLATION_READ_UNCOMMITTED
* @see org.springframework.transaction.TransactionDefinition#ISOLATION_READ_COMMITTED
* @see org.springframework.transaction.TransactionDefinition#ISOLATION_REPEATABLE_READ
* @see org.springframework.transaction.TransactionDefinition#ISOLATION_SERIALIZABLE
* @see org.springframework.transaction.TransactionDefinition#getIsolationLevel()
*/
public static Integer getCurrentTransactionIsolationLevel() {
return (Integer) currentTransactionIsolationLevel.get();
}
/**
* Expose whether there currently is an actual transaction active.
* Called by the transaction manager on transaction begin and on cleanup.
* @param active <code>true</code> to mark the current thread as being associated
* with an actual transaction; <code>false</code> to reset that marker
*/
public static void setActualTransactionActive(boolean active) {
actualTransactionActive.set(active ? Boolean.TRUE : null);
}
/**
* Return whether there currently is an actual transaction active.
* This indicates whether the current thread is associated with an actual
* transaction rather than just with active transaction synchronization.
* <p>To be called by resource management code that wants to discriminate
* between active transaction synchronization (with or without backing
* resource transaction; also on PROPAGATION_SUPPORTS) and an actual
* transaction being active (with backing resource transaction;
* on PROPAGATION_REQUIRES, PROPAGATION_REQUIRES_NEW, etc).
* @see #isSynchronizationActive()
*/
public static boolean isActualTransactionActive() {
return (actualTransactionActive.get() != null);
}
/**
* Clear the entire transaction synchronization state for the current thread:
* registered synchronizations as well as the various transaction characteristics.
* @see #clearSynchronization()
* @see #setCurrentTransactionName
* @see #setCurrentTransactionReadOnly
* @see #setCurrentTransactionIsolationLevel
* @see #setActualTransactionActive
*/
public static void clear() {
clearSynchronization();
setCurrentTransactionName(null);
setCurrentTransactionReadOnly(false);
setCurrentTransactionIsolationLevel(null);
setActualTransactionActive(false);
}
}
The table below shows all metrics for TransactionSynchronizationManager.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 36.00 | Number of blocks | |
| BLOCK_COMMENT | 15.00 | Number of block comment lines | |
| COMMENTS | 245.00 | Comment lines | |
| COMMENT_DENSITY | 1.86 | Comment density | |
| COMPARISONS | 28.00 | Number of comparison operators | |
| CYCLOMATIC | 42.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 27.00 | Comments in declarations | |
| DOC_COMMENT | 214.00 | Number of javadoc comment lines | |
| ELOC | 132.00 | Effective lines of code | |
| EXEC_COMMENTS | 5.00 | Comments in executable code | |
| EXITS | 26.00 | Procedure exits | |
| FUNCTIONS | 22.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 45.67 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 45.00 | 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 | 1.00 | 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 | 1.00 | 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 | 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 | 2.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 0.00 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0110 | 6.00 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0111 | 0.00 | JAVA0111 Incorrect javadoc: @return tag for void method | |
| JAVA0112 | 0.00 | JAVA0112 Incorrect javadoc: no exception 'exception' in throws | |
| JAVA0113 | 0.00 | JAVA0113 Incorrect javadoc: no @author tag | |
| JAVA0114 | 1.00 | JAVA0114 Incorrect javadoc: no @version tag | |
| JAVA0115 | 0.00 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0116 | 0.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 0.00 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0118 | 0.00 | JAVA0118 Missing javadoc: type 'type' | |
| JAVA0119 | 0.00 | JAVA0119 Control variable changed within body of for loop | |
| JAVA0123 | 0.00 | JAVA0123 Use all three components of for loop | |
| JAVA0125 | 0.00 | JAVA0125 Continue statement with label | |
| JAVA0126 | 6.00 | 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 | 1.00 | 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 | 487.00 | 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 | 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 | 458.00 | Number of lines in the source file | |
| LINE_COMMENT | 16.00 | Number of line comments | |
| LOC | 169.00 | Lines of code | |
| LOGICAL_LINES | 83.00 | Number of statements | |
| LOOPS | 0.00 | Number of loops | |
| NEST_DEPTH | 2.00 | Maximum nesting depth | |
| OPERANDS | 393.00 | Number of operands | |
| OPERATORS | 787.00 | Number of operators | |
| PARAMS | 13.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 1180.00 | Halstead program length | |
| PROGRAM_VOCAB | 175.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 32.00 | Number of return points from functions | |
| SIZE | 19594.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 142.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 33.00 | Number of unique operators | |
| WHITESPACE | 44.00 | Number of whitespace lines | |