AbstractPersistentCollection.java
| Index Score | ||
|---|---|---|
 |
 |
org.hibernate.collection |
 |
 |
Hibernate |
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 | |
|---|---|---|
| FUNCTIONS | Number of function declarations |  |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| RETURNS | Number of return points from functions | |
| DECL_COMMENTS | Comments in declarations | |
| INTERFACE_COMPLEXITY | Interface complexity | |
| CYCLOMATIC | Cyclomatic complexity | |
| BLOCKS | Number of blocks | |
| PARAMS | Number of formal parameter declarations | |
| EXITS | Procedure exits | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| LINES | Number of lines in the source file | |
| LOC | Lines of code | |
| ELOC | Effective lines of code | |
| OPERATORS | Number of operators | |
| UNIQUE_OPERANDS | Number of unique operands | |
| DOC_COMMENT | Number of javadoc comment lines | |
| PROGRAM_LENGTH | Halstead program length | |
| LOGICAL_LINES | Number of statements | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| SIZE | Size of the file in bytes | |
| COMMENTS | Comment lines | |
| JAVA0115 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| OPERANDS | Number of operands | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| COMPARISONS | Number of comparison operators | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0277 | JAVA0277 Iterator.next() implementation does not throw NoSuchElementException | |
| JAVA0136 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
| JAVA0278 | JAVA0278 Unnecessary use of Boolean constructor | |
| JAVA0254 | JAVA0254 Use enhanced for loop construct instead of Iterator | |
| WHITESPACE | Number of whitespace lines | |
| UNIQUE_OPERATORS | Number of unique operators | |
| PROGRAM_VOLUME | Halstead program volume | |
| JAVA0100 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| JAVA0256 | JAVA0256 Assignment of external collection/array to field | |
| NEST_DEPTH | Maximum nesting depth | |
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2008, Red Hat Middleware LLC or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Middleware LLC.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*
*/
package org.hibernate.collection;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.ListIterator;
import org.hibernate.AssertionFailure;
import org.hibernate.HibernateException;
import org.hibernate.LazyInitializationException;
import org.hibernate.engine.CollectionEntry;
import org.hibernate.engine.ForeignKeys;
import org.hibernate.engine.SessionImplementor;
import org.hibernate.engine.TypedValue;
import org.hibernate.persister.collection.CollectionPersister;
import org.hibernate.pretty.MessageHelper;
import org.hibernate.type.Type;
import org.hibernate.util.CollectionHelper;
import org.hibernate.util.EmptyIterator;
import org.hibernate.util.MarkerObject;
/**
* Base class implementing {@link PersistentCollection}
*
* @author Gavin King
*/
public abstract class AbstractPersistentCollection implements Serializable, PersistentCollection {
private transient SessionImplementor session;
private boolean initialized;
private transient List operationQueue;
private transient boolean directlyAccessible;
private transient boolean initializing;
private Object owner;
private int cachedSize = -1;
private String role;
private Serializable key;
// collections detect changes made via their public interface and mark
// themselves as dirty as a performance optimization
private boolean dirty;
private Serializable storedSnapshot;
public final String getRole() {
return role;
}
public final Serializable getKey() {
return key;
}
public final boolean isUnreferenced() {
return role==null;
}
public final boolean isDirty() {
return dirty;
}
public final void clearDirty() {
dirty = false;
}
public final void dirty() {
dirty = true;
}
public final Serializable getStoredSnapshot() {
return storedSnapshot;
}
//Careful: these methods do not initialize the collection.
/**
* Is the initialized collection empty?
*/
public abstract boolean empty();
/**
* Called by any read-only method of the collection interface
*/
protected final void read() {
initialize(false);
}
/**
* Called by the <tt>size()</tt> method
*/
protected boolean readSize() {
if (!initialized) {
if ( cachedSize!=-1 && !hasQueuedOperations() ) {
return true;
}
else {
throwLazyInitializationExceptionIfNotConnected();
CollectionEntry entry = session.getPersistenceContext().getCollectionEntry(this);
CollectionPersister persister = entry.getLoadedPersister();
if ( persister.isExtraLazy() ) {
if ( hasQueuedOperations() ) {
session.flush();
}
cachedSize = persister.getSize( entry.getLoadedKey(), session );
return true;
}
}
}
read();
return false;
}
protected Boolean readIndexExistence(Object index) {
if (!initialized) {
throwLazyInitializationExceptionIfNotConnected();
CollectionEntry entry = session.getPersistenceContext().getCollectionEntry(this);
CollectionPersister persister = entry.getLoadedPersister();
if ( persister.isExtraLazy() ) {
if ( hasQueuedOperations() ) {
session.flush();
}
return new Boolean( persister.indexExists( entry.getLoadedKey(), index, session ) );
}
}
read();
return null;
}
protected Boolean readElementExistence(Object element) {
if (!initialized) {
throwLazyInitializationExceptionIfNotConnected();
CollectionEntry entry = session.getPersistenceContext().getCollectionEntry(this);
CollectionPersister persister = entry.getLoadedPersister();
if ( persister.isExtraLazy() ) {
if ( hasQueuedOperations() ) {
session.flush();
}
return new Boolean( persister.elementExists( entry.getLoadedKey(), element, session ) );
}
}
read();
return null;
}
protected static final Object UNKNOWN = new MarkerObject("UNKNOWN");
protected Object readElementByIndex(Object index) {
if (!initialized) {
throwLazyInitializationExceptionIfNotConnected();
CollectionEntry entry = session.getPersistenceContext().getCollectionEntry(this);
CollectionPersister persister = entry.getLoadedPersister();
if ( persister.isExtraLazy() ) {
if ( hasQueuedOperations() ) {
session.flush();
}
return persister.getElementByIndex( entry.getLoadedKey(), index, session, owner );
}
}
read();
return UNKNOWN;
}
protected int getCachedSize() {
return cachedSize;
}
/**
* Is the collection currently connected to an open session?
*/
private final boolean isConnectedToSession() {
return session!=null &&
session.isOpen() &&
session.getPersistenceContext().containsCollection(this);
}
/**
* Called by any writer method of the collection interface
*/
protected final void write() {
initialize(true);
dirty();
}
/**
* Is this collection in a state that would allow us to
* "queue" operations?
*/
protected boolean isOperationQueueEnabled() {
return !initialized &&
isConnectedToSession() &&
isInverseCollection();
}
/**
* Is this collection in a state that would allow us to
* "queue" puts? This is a special case, because of orphan
* delete.
*/
protected boolean isPutQueueEnabled() {
return !initialized &&
isConnectedToSession() &&
isInverseOneToManyOrNoOrphanDelete();
}
/**
* Is this collection in a state that would allow us to
* "queue" clear? This is a special case, because of orphan
* delete.
*/
protected boolean isClearQueueEnabled() {
return !initialized &&
isConnectedToSession() &&
isInverseCollectionNoOrphanDelete();
}
/**
* Is this the "inverse" end of a bidirectional association?
*/
private boolean isInverseCollection() {
CollectionEntry ce = session.getPersistenceContext().getCollectionEntry(this);
return ce != null && ce.getLoadedPersister().isInverse();
}
/**
* Is this the "inverse" end of a bidirectional association with
* no orphan delete enabled?
*/
private boolean isInverseCollectionNoOrphanDelete() {
CollectionEntry ce = session.getPersistenceContext().getCollectionEntry(this);
return ce != null &&
ce.getLoadedPersister().isInverse() &&
!ce.getLoadedPersister().hasOrphanDelete();
}
/**
* Is this the "inverse" end of a bidirectional one-to-many, or
* of a collection with no orphan delete?
*/
private boolean isInverseOneToManyOrNoOrphanDelete() {
CollectionEntry ce = session.getPersistenceContext().getCollectionEntry(this);
return ce != null && ce.getLoadedPersister().isInverse() && (
ce.getLoadedPersister().isOneToMany() ||
!ce.getLoadedPersister().hasOrphanDelete()
);
}
/**
* Queue an addition
*/
protected final void queueOperation(Object element) {
if (operationQueue==null) operationQueue = new ArrayList(10);
operationQueue.add(element);
dirty = true; //needed so that we remove this collection from the second-level cache
}
/**
* After reading all existing elements from the database,
* add the queued elements to the underlying collection.
*/
protected final void performQueuedOperations() {
for ( int i=0; i<operationQueue.size(); i++ ) {
( (DelayedOperation) operationQueue.get(i) ).operate();
}
}
/**
* After flushing, re-init snapshot state.
*/
public void setSnapshot(Serializable key, String role, Serializable snapshot) {
this.key = key;
this.role = role;
this.storedSnapshot = snapshot;
}
/**
* After flushing, clear any "queued" additions, since the
* database state is now synchronized with the memory state.
*/
public void postAction() {
operationQueue=null;
cachedSize = -1;
clearDirty();
}
/**
* Not called by Hibernate, but used by non-JDK serialization,
* eg. SOAP libraries.
*/
public AbstractPersistentCollection() {}
protected AbstractPersistentCollection(SessionImplementor session) {
this.session = session;
}
/**
* return the user-visible collection (or array) instance
*/
public Object getValue() {
return this;
}
/**
* Called just before reading any rows from the JDBC result set
*/
public void beginRead() {
// override on some subclasses
initializing = true;
}
/**
* Called after reading all rows from the JDBC result set
*/
public boolean endRead() {
//override on some subclasses
return afterInitialize();
}
public boolean afterInitialize() {
setInitialized();
//do this bit after setting initialized to true or it will recurse
if (operationQueue!=null) {
performQueuedOperations();
operationQueue=null;
cachedSize = -1;
return false;
}
else {
return true;
}
}
/**
* Initialize the collection, if possible, wrapping any exceptions
* in a runtime exception
* @param writing currently obsolete
* @throws LazyInitializationException if we cannot initialize
*/
protected final void initialize(boolean writing) {
if (!initialized) {
if (initializing) {
throw new LazyInitializationException("illegal access to loading collection");
}
throwLazyInitializationExceptionIfNotConnected();
session.initializeCollection(this, writing);
}
}
private void throwLazyInitializationExceptionIfNotConnected() {
if ( !isConnectedToSession() ) {
throwLazyInitializationException("no session or session was closed");
}
if ( !session.isConnected() ) {
throwLazyInitializationException("session is disconnected");
}
}
private void throwLazyInitializationException(String message) {
throw new LazyInitializationException(
"failed to lazily initialize a collection" +
( role==null ? "" : " of role: " + role ) +
", " + message
);
}
protected final void setInitialized() {
this.initializing = false;
this.initialized = true;
}
protected final void setDirectlyAccessible(boolean directlyAccessible) {
this.directlyAccessible = directlyAccessible;
}
/**
* Could the application possibly have a direct reference to
* the underlying collection implementation?
*/
public boolean isDirectlyAccessible() {
return directlyAccessible;
}
/**
* Disassociate this collection from the given session.
* @return true if this was currently associated with the given session
*/
public final boolean unsetSession(SessionImplementor currentSession) {
if (currentSession==this.session) {
this.session=null;
return true;
}
else {
return false;
}
}
/**
* Associate the collection with the given session.
* @return false if the collection was already associated with the session
* @throws HibernateException if the collection was already associated
* with another open session
*/
public final boolean setCurrentSession(SessionImplementor session) throws HibernateException {
if (session==this.session) {
return false;
}
else {
if ( isConnectedToSession() ) {
CollectionEntry ce = session.getPersistenceContext().getCollectionEntry(this);
if (ce==null) {
throw new HibernateException(
"Illegal attempt to associate a collection with two open sessions"
);
}
else {
throw new HibernateException(
"Illegal attempt to associate a collection with two open sessions: " +
MessageHelper.collectionInfoString(
ce.getLoadedPersister(),
ce.getLoadedKey(),
session.getFactory()
)
);
}
}
else {
this.session = session;
return true;
}
}
}
/**
* Do we need to completely recreate this collection when it changes?
*/
public boolean needsRecreate(CollectionPersister persister) {
return false;
}
/**
* To be called internally by the session, forcing
* immediate initialization.
*/
public final void forceInitialization() throws HibernateException {
if (!initialized) {
if (initializing) {
throw new AssertionFailure("force initialize loading collection");
}
if (session==null) {
throw new HibernateException("collection is not associated with any session");
}
if ( !session.isConnected() ) {
throw new HibernateException("disconnected session");
}
session.initializeCollection(this, false);
}
}
/**
* Get the current snapshot from the session
*/
protected final Serializable getSnapshot() {
return session.getPersistenceContext().getSnapshot(this);
}
/**
* Is this instance initialized?
*/
public final boolean wasInitialized() {
return initialized;
}
public boolean isRowUpdatePossible() {
return true;
}
/**
* Does this instance have any "queued" additions?
*/
public final boolean hasQueuedOperations() {
return operationQueue!=null;
}
/**
* Iterate the "queued" additions
*/
public final Iterator queuedAdditionIterator() {
if ( hasQueuedOperations() ) {
return new Iterator() {
int i = 0;
public Object next() {
return ( (DelayedOperation) operationQueue.get(i++) ).getAddedInstance();
}
public boolean hasNext() {
return i<operationQueue.size();
}
public void remove() {
throw new UnsupportedOperationException();
}
};
}
else {
return EmptyIterator.INSTANCE;
}
}
/**
* Iterate the "queued" additions
*/
public final Collection getQueuedOrphans(String entityName) {
if ( hasQueuedOperations() ) {
Collection additions = new ArrayList( operationQueue.size() );
Collection removals = new ArrayList( operationQueue.size() );
for ( int i = 0; i < operationQueue.size(); i++ ) {
DelayedOperation op = (DelayedOperation) operationQueue.get(i);
additions.add( op.getAddedInstance() );
removals.add( op.getOrphan() );
}
return getOrphans(removals, additions, entityName, session);
}
else {
return CollectionHelper.EMPTY_COLLECTION;
}
}
/**
* Called before inserting rows, to ensure that any surrogate keys
* are fully generated
*/
public void preInsert(CollectionPersister persister) throws HibernateException {}
/**
* Called after inserting a row, to fetch the natively generated id
*/
public void afterRowInsert(CollectionPersister persister, Object entry, int i) throws HibernateException {}
/**
* get all "orphaned" elements
*/
public abstract Collection getOrphans(Serializable snapshot, String entityName) throws HibernateException;
/**
* Get the current session
*/
public final SessionImplementor getSession() {
return session;
}
final class IteratorProxy implements Iterator {
private final Iterator iter;
IteratorProxy(Iterator iter) {
this.iter=iter;
}
public boolean hasNext() {
return iter.hasNext();
}
public Object next() {
return iter.next();
}
public void remove() {
write();
iter.remove();
}
}
final class ListIteratorProxy implements ListIterator {
private final ListIterator iter;
ListIteratorProxy(ListIterator iter) {
this.iter = iter;
}
public void add(Object o) {
write();
iter.add(o);
}
public boolean hasNext() {
return iter.hasNext();
}
public boolean hasPrevious() {
return iter.hasPrevious();
}
public Object next() {
return iter.next();
}
public int nextIndex() {
return iter.nextIndex();
}
public Object previous() {
return iter.previous();
}
public int previousIndex() {
return iter.previousIndex();
}
public void remove() {
write();
iter.remove();
}
public void set(Object o) {
write();
iter.set(o);
}
}
class SetProxy implements java.util.Set {
final Collection set;
SetProxy(Collection set) {
this.set=set;
}
public boolean add(Object o) {
write();
return set.add(o);
}
public boolean addAll(Collection c) {
write();
return set.addAll(c);
}
public void clear() {
write();
set.clear();
}
public boolean contains(Object o) {
return set.contains(o);
}
public boolean containsAll(Collection c) {
return set.containsAll(c);
}
public boolean isEmpty() {
return set.isEmpty();
}
public Iterator iterator() {
return new IteratorProxy( set.iterator() );
}
public boolean remove(Object o) {
write();
return set.remove(o);
}
public boolean removeAll(Collection c) {
write();
return set.removeAll(c);
}
public boolean retainAll(Collection c) {
write();
return set.retainAll(c);
}
public int size() {
return set.size();
}
public Object[] toArray() {
return set.toArray();
}
public Object[] toArray(Object[] array) {
return set.toArray(array);
}
}
final class ListProxy implements java.util.List {
private final java.util.List list;
ListProxy(java.util.List list) {
this.list = list;
}
public void add(int index, Object value) {
write();
list.add(index, value);
}
/**
* @see java.util.Collection#add(Object)
*/
public boolean add(Object o) {
write();
return list.add(o);
}
/**
* @see java.util.Collection#addAll(Collection)
*/
public boolean addAll(Collection c) {
write();
return list.addAll(c);
}
/**
* @see java.util.List#addAll(int, Collection)
*/
public boolean addAll(int i, Collection c) {
write();
return list.addAll(i, c);
}
/**
* @see java.util.Collection#clear()
*/
public void clear() {
write();
list.clear();
}
/**
* @see java.util.Collection#contains(Object)
*/
public boolean contains(Object o) {
return list.contains(o);
}
/**
* @see java.util.Collection#containsAll(Collection)
*/
public boolean containsAll(Collection c) {
return list.containsAll(c);
}
/**
* @see java.util.List#get(int)
*/
public Object get(int i) {
return list.get(i);
}
/**
* @see java.util.List#indexOf(Object)
*/
public int indexOf(Object o) {
return list.indexOf(o);
}
/**
* @see java.util.Collection#isEmpty()
*/
public boolean isEmpty() {
return list.isEmpty();
}
/**
* @see java.util.Collection#iterator()
*/
public Iterator iterator() {
return new IteratorProxy( list.iterator() );
}
/**
* @see java.util.List#lastIndexOf(Object)
*/
public int lastIndexOf(Object o) {
return list.lastIndexOf(o);
}
/**
* @see java.util.List#listIterator()
*/
public ListIterator listIterator() {
return new ListIteratorProxy( list.listIterator() );
}
/**
* @see java.util.List#listIterator(int)
*/
public ListIterator listIterator(int i) {
return new ListIteratorProxy( list.listIterator(i) );
}
/**
* @see java.util.List#remove(int)
*/
public Object remove(int i) {
write();
return list.remove(i);
}
/**
* @see java.util.Collection#remove(Object)
*/
public boolean remove(Object o) {
write();
return list.remove(o);
}
/**
* @see java.util.Collection#removeAll(Collection)
*/
public boolean removeAll(Collection c) {
write();
return list.removeAll(c);
}
/**
* @see java.util.Collection#retainAll(Collection)
*/
public boolean retainAll(Collection c) {
write();
return list.retainAll(c);
}
/**
* @see java.util.List#set(int, Object)
*/
public Object set(int i, Object o) {
write();
return list.set(i, o);
}
/**
* @see java.util.Collection#size()
*/
public int size() {
return list.size();
}
/**
* @see java.util.List#subList(int, int)
*/
public List subList(int i, int j) {
return list.subList(i, j);
}
/**
* @see java.util.Collection#toArray()
*/
public Object[] toArray() {
return list.toArray();
}
/**
* @see java.util.Collection#toArray(Object[])
*/
public Object[] toArray(Object[] array) {
return list.toArray(array);
}
}
protected interface DelayedOperation {
public void operate();
public Object getAddedInstance();
public Object getOrphan();
}
/**
* Given a collection of entity instances that used to
* belong to the collection, and a collection of instances
* that currently belong, return a collection of orphans
*/
protected static Collection getOrphans(
Collection oldElements,
Collection currentElements,
String entityName,
SessionImplementor session)
throws HibernateException {
// short-circuit(s)
if ( currentElements.size()==0 ) return oldElements; // no new elements, the old list contains only Orphans
if ( oldElements.size()==0) return oldElements; // no old elements, so no Orphans neither
Type idType = session.getFactory().getEntityPersister(entityName).getIdentifierType();
// create the collection holding the Orphans
Collection res = new ArrayList();
// collect EntityIdentifier(s) of the *current* elements - add them into a HashSet for fast access
java.util.Set currentIds = new HashSet();
for ( Iterator it=currentElements.iterator(); it.hasNext(); ) {
Object current = it.next();
if ( current!=null && ForeignKeys.isNotTransient(entityName, current, null, session) ) {
Serializable currentId = ForeignKeys.getEntityIdentifierIfNotUnsaved(entityName, current, session);
currentIds.add( new TypedValue( idType, currentId, session.getEntityMode() ) );
}
}
// iterate over the *old* list
for ( Iterator it=oldElements.iterator(); it.hasNext(); ) {
Object old = it.next();
Serializable oldId = ForeignKeys.getEntityIdentifierIfNotUnsaved(entityName, old, session);
if ( !currentIds.contains( new TypedValue( idType, oldId, session.getEntityMode() ) ) ) {
res.add(old);
}
}
return res;
}
static void identityRemove(
Collection list,
Object object,
String entityName,
SessionImplementor session)
throws HibernateException {
if ( object!=null && ForeignKeys.isNotTransient(entityName, object, null, session) ) {
Type idType = session.getFactory().getEntityPersister(entityName).getIdentifierType();
Serializable idOfCurrent = ForeignKeys.getEntityIdentifierIfNotUnsaved(entityName, object, session);
Iterator iter = list.iterator();
while ( iter.hasNext() ) {
Serializable idOfOld = ForeignKeys.getEntityIdentifierIfNotUnsaved(entityName, iter.next(), session);
if ( idType.isEqual( idOfCurrent, idOfOld, session.getEntityMode(), session.getFactory() ) ) {
iter.remove();
break;
}
}
}
}
public Object getIdentifier(Object entry, int i) {
throw new UnsupportedOperationException();
}
public Object getOwner() {
return owner;
}
public void setOwner(Object owner) {
this.owner = owner;
}
}
The table below shows all metrics for AbstractPersistentCollection.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 155.00 | Number of blocks | |
| BLOCK_COMMENT | 24.00 | Number of block comment lines | |
| COMMENTS | 232.00 | Comment lines | |
| COMMENT_DENSITY | 0.52 | Comment density | |
| COMPARISONS | 58.00 | Number of comparison operators | |
| CYCLOMATIC | 168.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 61.00 | Comments in declarations | |
| DOC_COMMENT | 198.00 | Number of javadoc comment lines | |
| ELOC | 445.00 | Effective lines of code | |
| EXEC_COMMENTS | 7.00 | Comments in executable code | |
| EXITS | 95.00 | Procedure exits | |
| FUNCTIONS | 115.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 66.67 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 207.00 | 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 | 1.00 | JAVA0016 Abstract class contains public constructor | |
| JAVA0017 | 0.00 | JAVA0017 Class name does not have required form | |
| JAVA0018 | 0.00 | JAVA0018 Method name does not have required form | |
| JAVA0019 | 0.00 | JAVA0019 Interface name does not have required form | |
| JAVA0020 | 0.00 | JAVA0020 Field name does not have required form | |
| JAVA0021 | 0.00 | JAVA0021 Interface method name does not have required form | |
| JAVA0022 | 0.00 | JAVA0022 Static final field name does not have required form | |
| JAVA0023 | 0.00 | JAVA0023 Empty finalize method | |
| JAVA0024 | 0.00 | JAVA0024 Empty class | |
| JAVA0025 | 0.00 | JAVA0025 Method override is empty | |
| JAVA0026 | 0.00 | JAVA0026 Finalize method with parameters | |
| JAVA0029 | 0.00 | JAVA0029 Private method not used | |
| JAVA0030 | 0.00 | JAVA0030 Private field not used | |
| JAVA0031 | 0.00 | JAVA0031 Case statement not properly closed | |
| JAVA0032 | 0.00 | JAVA0032 Switch statement missing default | |
| JAVA0033 | 0.00 | JAVA0033 default: not last case in switch statement | |
| JAVA0034 | 3.00 | 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 | 1.00 | 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 | 5.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 0.00 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0110 | 42.00 | 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 | 5.00 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0116 | 0.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 10.00 | 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 | 7.00 | 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 | 1.00 | 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 | 2.00 | 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 | 3.00 | JAVA0141 Unnecessary modifier for method in interface | |
| JAVA0143 | 0.00 | JAVA0143 Synchronized method | |
| JAVA0144 | 0.00 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0145 | 1699.00 | 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 | 2.00 | JAVA0254 Use enhanced for loop construct instead of Iterator | |
| JAVA0255 | 0.00 | JAVA0255 Result of method invocation not used | |
| JAVA0256 | 2.00 | JAVA0256 Assignment of external collection/array to field | |
| JAVA0257 | 0.00 | JAVA0257 Use of 'Constant Interface' anti-pattern | |
| JAVA0258 | 1.00 | JAVA0258 Implement Iterable for foreach compatibility | |
| JAVA0259 | 1.00 | JAVA0259 Return of collection/array field | |
| JAVA0260 | 0.00 | JAVA0260 Use 'enum' instead of Enumerated Type pattern | |
| JAVA0261 | 0.00 | JAVA0261 Use specialized Enum collection types | |
| JAVA0262 | 0.00 | JAVA0262 Use of char in integer context | |
| JAVA0263 | 0.00 | JAVA0263 Long literal ends with 'l' instead of 'L' | |
| JAVA0264 | 0.00 | JAVA0264 Integer math in long context - check for overflow | |
| JAVA0265 | 0.00 | JAVA0265 Use of Throwable.printStackTrace() | |
| JAVA0266 | 0.00 | JAVA0266 Use of System.out | |
| JAVA0267 | 0.00 | JAVA0267 Use of System.err | |
| JAVA0269 | 0.00 | JAVA0269 Contents of StringBuffer never used | |
| JAVA0270 | 0.00 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
| JAVA0271 | 0.00 | JAVA0271 Minimize use of on-demand (.*) static imports | |
| JAVA0272 | 0.00 | JAVA0272 Thread.run() called | |
| JAVA0273 | 0.00 | JAVA0273 Non-final derivative of Thread calls start() in constructor | |
| JAVA0274 | 0.00 | JAVA0274 Serializable class has a synchronized readObject() | |
| JAVA0275 | 0.00 | JAVA0275 Serializable class has a synchronized writeObject() and no other synchronized methods | |
| JAVA0276 | 0.00 | JAVA0276 Unnecessary use of String constructor | |
| JAVA0277 | 2.00 | JAVA0277 Iterator.next() implementation does not throw NoSuchElementException | |
| JAVA0278 | 2.00 | 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 | 965.00 | Number of lines in the source file | |
| LINE_COMMENT | 10.00 | Number of line comments | |
| LOC | 604.00 | Lines of code | |
| LOGICAL_LINES | 256.00 | Number of statements | |
| LOOPS | 5.00 | Number of loops | |
| NEST_DEPTH | 5.00 | Maximum nesting depth | |
| OPERANDS | 1015.00 | Number of operands | |
| OPERATORS | 2346.00 | Number of operators | |
| PARAMS | 67.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 3361.00 | Halstead program length | |
| PROGRAM_VOCAB | 422.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 140.00 | Number of return points from functions | |
| SIZE | 23466.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 373.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 49.00 | Number of unique operators | |
| WHITESPACE | 129.00 | Number of whitespace lines | |