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ensure member variables are always synchronized 

git-svn-id: https://svn.apache.org/repos/asf/activemq/trunk@551271 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Robert Davies 2007-06-27 18:53:30 +00:00
parent 8a0157a506
commit a3e382199c
53 changed files with 299 additions and 240 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
activemq-core/src/main/java/org/apache/activemq/ActiveMQConnectionFactory.java
View File

@ -591,7 +591,7 @@ public class ActiveMQConnectionFactory extends JNDIBaseStorable implements Conne
props.setProperty("optimizeAcknowledge", Boolean.toString(isOptimizeAcknowledge()));
props.setProperty("statsEnabled",Boolean.toString(isStatsEnabled()));
props.setProperty("alwaysSyncSend",Boolean.toString(isAlwaysSyncSend()));
props.setProperty("producerWindowSize", Integer.toString(producerWindowSize));
props.setProperty("producerWindowSize", Integer.toString(getProducerWindowSize()));
}
public boolean isUseCompression() {

7
activemq-core/src/main/java/org/apache/activemq/broker/BrokerService.java
View File

@ -136,7 +136,6 @@ public class BrokerService implements Service {
private transient Thread shutdownHook;
private String[] transportConnectorURIs;
private String[] networkConnectorURIs;
private String[] proxyConnectorURIs;
private JmsConnector[] jmsBridgeConnectors; //these are Jms to Jms bridges to other jms messaging systems
private boolean deleteAllMessagesOnStartup;
private boolean advisorySupport = true;
@ -1126,12 +1125,6 @@ public class BrokerService implements Service {
addNetworkConnector(uri);
}
}
if (proxyConnectorURIs != null) {
for (int i = 0; i < proxyConnectorURIs.length; i++) {
String uri = proxyConnectorURIs[i];
addProxyConnector(uri);
}
}
if (jmsBridgeConnectors != null){
for (int i = 0; i < jmsBridgeConnectors.length; i++){

24
activemq-core/src/main/java/org/apache/activemq/broker/TransportConnection.java
View File

@ -349,7 +349,7 @@ public class TransportConnection implements Service,Connection,Task,CommandVisit
return null;
}
public Response processWireFormat(WireFormatInfo info) throws Exception{
public synchronized Response processWireFormat(WireFormatInfo info) throws Exception{
wireFormatInfo=info;
protocolVersion.set(info.getVersion());
return null;
@ -370,6 +370,9 @@ public class TransportConnection implements Service,Connection,Task,CommandVisit
if(cs!=null){
context=cs.getContext();
}
if (cs == null) {
throw new NullPointerException("Context is null");
}
// Avoid replaying dup commands
if(cs.getTransactionState(info.getTransactionId())==null){
cs.addTransactionState(info.getTransactionId());
@ -391,6 +394,9 @@ public class TransportConnection implements Service,Connection,Task,CommandVisit
if(cs!=null){
context=cs.getContext();
}
if (cs == null) {
throw new NullPointerException("Context is null");
}
TransactionState transactionState=cs.getTransactionState(info.getTransactionId());
if(transactionState==null)
throw new IllegalStateException("Cannot prepare a transaction that had not been started: "
@ -414,6 +420,9 @@ public class TransportConnection implements Service,Connection,Task,CommandVisit
if(cs!=null){
context=cs.getContext();
}
if (cs == null) {
throw new NullPointerException("Context is null");
}
cs.removeTransactionState(info.getTransactionId());
broker.commitTransaction(context,info.getTransactionId(),true);
return null;
@ -425,6 +434,9 @@ public class TransportConnection implements Service,Connection,Task,CommandVisit
if(cs!=null){
context=cs.getContext();
}
if (cs == null) {
throw new NullPointerException("Context is null");
}
cs.removeTransactionState(info.getTransactionId());
broker.commitTransaction(context,info.getTransactionId(),false);
return null;
@ -436,6 +448,9 @@ public class TransportConnection implements Service,Connection,Task,CommandVisit
if(cs!=null){
context=cs.getContext();
}
if (cs == null) {
throw new NullPointerException("Context is null");
}
cs.removeTransactionState(info.getTransactionId());
broker.rollbackTransaction(context,info.getTransactionId());
return null;
@ -869,6 +884,7 @@ public class TransportConnection implements Service,Connection,Task,CommandVisit
log.debug("Stopping connection: "+transport.getRemoteAddress());
connector.onStopped(this);
try{
synchronized(this){
if(masterBroker!=null){
masterBroker.stop();
}
@ -880,6 +896,8 @@ public class TransportConnection implements Service,Connection,Task,CommandVisit
if(transportException==null){
transport.oneway(new ShutdownInfo());
}
}
}catch(Exception ignore){
log.trace("Exception caught stopping",ignore);
}
@ -1069,7 +1087,7 @@ public class TransportConnection implements Service,Connection,Task,CommandVisit
this.pendingStop=pendingStop;
}
public Response processBrokerInfo(BrokerInfo info){
public synchronized Response processBrokerInfo(BrokerInfo info){
if(info.isSlaveBroker()){
// stream messages from this broker (the master) to
// the slave
@ -1172,8 +1190,10 @@ public class TransportConnection implements Service,Connection,Task,CommandVisit
synchronized(consumerExchanges){
result=new ConsumerBrokerExchange();
ConnectionState state=lookupConnectionState(id);
synchronized(this){
context=state.getContext();
result.setConnectionContext(context);
}
SessionState ss=state.getSessionState(id.getParentId());
if(ss!=null){
ConsumerState cs=ss.getConsumerState(id);

14
activemq-core/src/main/java/org/apache/activemq/broker/region/DurableTopicSubscription.java
View File

@ -54,7 +54,7 @@ public class DurableTopicSubscription extends PrefetchSubscription implements Us
return active;
}
protected boolean isFull(){
protected synchronized boolean isFull(){
return !active||super.isFull();
}
@ -113,7 +113,6 @@ public class DurableTopicSubscription extends PrefetchSubscription implements Us
topic.deactivate(context,this);
}
}
synchronized(dispatched){
for(Iterator iter=dispatched.iterator();iter.hasNext();){
// Mark the dispatched messages as redelivered for next time.
MessageReference node=(MessageReference)iter.next();
@ -132,7 +131,6 @@ public class DurableTopicSubscription extends PrefetchSubscription implements Us
}
iter.remove();
}
}
if(!keepDurableSubsActive){
synchronized(pending){
try{
@ -167,11 +165,11 @@ public class DurableTopicSubscription extends PrefetchSubscription implements Us
super.add(node);
}
protected void doAddRecoveredMessage(MessageReference message) throws Exception{
protected synchronized void doAddRecoveredMessage(MessageReference message) throws Exception{
pending.addRecoveredMessage(message);
}
public int getPendingQueueSize(){
public synchronized int getPendingQueueSize(){
if(active||keepDurableSubsActive){
return super.getPendingQueueSize();
}
@ -184,7 +182,7 @@ public class DurableTopicSubscription extends PrefetchSubscription implements Us
"You cannot dynamically change the selector for durable topic subscriptions");
}
protected boolean canDispatch(MessageReference node){
protected synchronized boolean canDispatch(MessageReference node){
return active;
}
@ -198,7 +196,7 @@ public class DurableTopicSubscription extends PrefetchSubscription implements Us
return subscriptionKey.getSubscriptionName();
}
public String toString(){
public synchronized String toString(){
return "DurableTopicSubscription:"+" consumer="+info.getConsumerId()+", destinations="+destinations.size()
+", total="+enqueueCounter+", pending="+getPendingQueueSize()+", dispatched="+dispatchCounter
+", inflight="+dispatched.size()+", prefetchExtension="+this.prefetchExtension;
@ -215,7 +213,7 @@ public class DurableTopicSubscription extends PrefetchSubscription implements Us
/**
* Release any references that we are holding.
*/
public void destroy(){
public synchronized void destroy(){
try{
synchronized(pending){
pending.reset();

4
activemq-core/src/main/java/org/apache/activemq/broker/region/IndirectMessageReference.java
View File

@ -76,7 +76,7 @@ public class IndirectMessageReference implements QueueMessageReference {
this.referenceCount=1;
message.incrementReferenceCount();
this.cachedSize = message != null ? message.getSize() : 0;
this.cachedSize = message.getSize();
}
synchronized public Message getMessageHardRef() {
@ -212,7 +212,7 @@ public class IndirectMessageReference implements QueueMessageReference {
return false;
}
public int getSize(){
public synchronized int getSize(){
Message msg = message;
if (msg != null){
return msg.getSize();

20
activemq-core/src/main/java/org/apache/activemq/broker/region/PrefetchSubscription.java
View File

@ -104,7 +104,7 @@ abstract public class PrefetchSubscription extends AbstractSubscription{
* Occurs when a pull times out. If nothing has been dispatched since the timeout was setup, then send the NULL
* message.
*/
private synchronized void pullTimeout(long dispatchCounterBeforePull){
final synchronized void pullTimeout(long dispatchCounterBeforePull){
if(dispatchCounterBeforePull==dispatchCounter){
try{
add(QueueMessageReference.NULL_MESSAGE);
@ -300,14 +300,14 @@ abstract public class PrefetchSubscription extends AbstractSubscription{
/**
* @return true when 60% or more room is left for dispatching messages
*/
public boolean isLowWaterMark(){
public synchronized boolean isLowWaterMark(){
return (dispatched.size()-prefetchExtension)<=(info.getPrefetchSize()*.4);
}
/**
* @return true when 10% or less room is left for dispatching messages
*/
public boolean isHighWaterMark(){
public synchronized boolean isHighWaterMark(){
return (dispatched.size()-prefetchExtension)>=(info.getPrefetchSize()*.9);
}
@ -315,17 +315,13 @@ abstract public class PrefetchSubscription extends AbstractSubscription{
return info.getPrefetchSize()+prefetchExtension-dispatched.size();
}
public int getPendingQueueSize(){
synchronized(pending){
public synchronized int getPendingQueueSize(){
return pending.size();
}
}
public int getDispatchedQueueSize(){
synchronized(dispatched){
public synchronized int getDispatchedQueueSize(){
return dispatched.size();
}
}
synchronized public long getDequeueCounter(){
return dequeueCounter;
@ -344,11 +340,11 @@ abstract public class PrefetchSubscription extends AbstractSubscription{
}
public PendingMessageCursor getPending(){
public synchronized PendingMessageCursor getPending(){
return this.pending;
}
public void setPending(PendingMessageCursor pending){
public synchronized void setPending(PendingMessageCursor pending){
this.pending=pending;
}
@ -413,7 +409,7 @@ abstract public class PrefetchSubscription extends AbstractSubscription{
}
}
protected boolean dispatch(final MessageReference node) throws IOException{
protected synchronized boolean dispatch(final MessageReference node) throws IOException{
final Message message=node.getMessage();
if(message==null){
return false;

5
activemq-core/src/main/java/org/apache/activemq/broker/region/Queue.java
View File

@ -47,7 +47,6 @@ import org.apache.activemq.command.Message;
import org.apache.activemq.command.MessageAck;
import org.apache.activemq.command.MessageId;
import org.apache.activemq.command.ProducerAck;
import org.apache.activemq.command.Response;
import org.apache.activemq.filter.BooleanExpression;
import org.apache.activemq.filter.MessageEvaluationContext;
import org.apache.activemq.kaha.Store;
@ -421,7 +420,7 @@ public class Queue implements Destination, Task {
doMessageSend(producerExchange, message);
}
private void doMessageSend(final ProducerBrokerExchange producerExchange, final Message message) throws IOException, Exception {
void doMessageSend(final ProducerBrokerExchange producerExchange, final Message message) throws IOException, Exception {
final ConnectionContext context = producerExchange.getConnectionContext();
message.setRegionDestination(this);
if(store!=null&&message.isPersistent()){
@ -979,7 +978,7 @@ public class Queue implements Destination, Task {
}
private void sendMessage(final ConnectionContext context,Message msg) throws Exception{
final void sendMessage(final ConnectionContext context,Message msg) throws Exception{
synchronized(messages){
messages.addMessageLast(msg);
}

2
activemq-core/src/main/java/org/apache/activemq/broker/region/QueueBrowserSubscription.java
View File

@ -39,7 +39,7 @@ public class QueueBrowserSubscription extends QueueSubscription {
return !((QueueMessageReference)node).isAcked();
}
public String toString() {
public synchronized String toString() {
return
"QueueBrowserSubscription:" +
" consumer="+info.getConsumerId()+

2
activemq-core/src/main/java/org/apache/activemq/broker/region/QueueSubscription.java
View File

@ -139,7 +139,7 @@ public class QueueSubscription extends PrefetchSubscription implements LockOwner
}
}
public String toString() {
public synchronized String toString() {
return
"QueueSubscription:" +
" consumer="+info.getConsumerId()+

2
activemq-core/src/main/java/org/apache/activemq/broker/region/Topic.java
View File

@ -341,7 +341,7 @@ public class Topic implements Destination {
doMessageSend(producerExchange, message);
}
private void doMessageSend(final ProducerBrokerExchange producerExchange, final Message message) throws IOException, Exception {
void doMessageSend(final ProducerBrokerExchange producerExchange, final Message message) throws IOException, Exception {
final ConnectionContext context = producerExchange.getConnectionContext();
message.setRegionDestination(this);

2
activemq-core/src/main/java/org/apache/activemq/broker/region/cursors/StoreDurableSubscriberCursor.java
View File

@ -166,7 +166,7 @@ public class StoreDurableSubscriberCursor extends AbstractPendingMessageCursor{
nonPersistent.addMessageLast(node);
}
public void clear(){
public synchronized void clear(){
pendingCount=0;
nonPersistent.clear();
for(PendingMessageCursor tsp: storePrefetches){

18
activemq-core/src/main/java/org/apache/activemq/broker/region/cursors/StoreQueueCursor.java
View File

@ -90,7 +90,7 @@ public class StoreQueueCursor extends AbstractPendingMessageCursor{
}
}
public void addMessageFirst(MessageReference node) throws Exception{
public synchronized void addMessageFirst(MessageReference node) throws Exception{
if(node!=null){
Message msg=node.getMessage();
if(started){
@ -105,7 +105,7 @@ public class StoreQueueCursor extends AbstractPendingMessageCursor{
}
}
public void clear(){
public synchronized void clear(){
pendingCount=0;
}
@ -150,7 +150,7 @@ public class StoreQueueCursor extends AbstractPendingMessageCursor{
persistent.reset();
}
public int size(){
public synchronized int size(){
return pendingCount;
}
@ -165,25 +165,25 @@ public class StoreQueueCursor extends AbstractPendingMessageCursor{
* @see org.apache.activemq.region.cursors.PendingMessageCursor
* @return true if recovery required
*/
public boolean isRecoveryRequired(){
public synchronized boolean isRecoveryRequired(){
return false;
}
/**
* @return the nonPersistent Cursor
*/
public PendingMessageCursor getNonPersistent(){
public synchronized PendingMessageCursor getNonPersistent(){
return this.nonPersistent;
}
/**
* @param nonPersistent cursor to set
*/
public void setNonPersistent(PendingMessageCursor nonPersistent){
public synchronized void setNonPersistent(PendingMessageCursor nonPersistent){
this.nonPersistent=nonPersistent;
}
public void setMaxBatchSize(int maxBatchSize){
public synchronized void setMaxBatchSize(int maxBatchSize){
persistent.setMaxBatchSize(maxBatchSize);
if(nonPersistent!=null){
nonPersistent.setMaxBatchSize(maxBatchSize);
@ -191,7 +191,7 @@ public class StoreQueueCursor extends AbstractPendingMessageCursor{
super.setMaxBatchSize(maxBatchSize);
}
public void gc() {
public synchronized void gc() {
if (persistent != null) {
persistent.gc();
}
@ -200,7 +200,7 @@ public class StoreQueueCursor extends AbstractPendingMessageCursor{
}
}
public void setUsageManager(UsageManager usageManager){
public synchronized void setUsageManager(UsageManager usageManager){
super.setUsageManager(usageManager);
if (persistent != null) {
persistent.setUsageManager(usageManager);

4
activemq-core/src/main/java/org/apache/activemq/broker/region/cursors/TopicStorePrefetch.java
View File

@ -80,7 +80,7 @@ class TopicStorePrefetch extends AbstractPendingMessageCursor implements Message
/**
* @return true if there are no pendingCount messages
*/
public boolean isEmpty(){
public synchronized boolean isEmpty(){
return pendingCount <= 0;
}
@ -99,7 +99,7 @@ class TopicStorePrefetch extends AbstractPendingMessageCursor implements Message
}
}
public void addMessageFirst(MessageReference node) throws Exception{
public synchronized void addMessageFirst(MessageReference node) throws Exception{
if(node!=null){
if(started){
firstMessageId=node.getMessageId();

2
activemq-core/src/main/java/org/apache/activemq/broker/region/policy/FixedCountSubscriptionRecoveryPolicy.java
View File

@ -92,7 +92,7 @@ public class FixedCountSubscriptionRecoveryPolicy implements SubscriptionRecover
this.maximumSize=maximumSize;
}
public Message[] browse(ActiveMQDestination destination) throws Exception{
public synchronized Message[] browse(ActiveMQDestination destination) throws Exception{
List result=new ArrayList();
DestinationFilter filter=DestinationFilter.parseFilter(destination);
int t=tail;

2
activemq-core/src/main/java/org/apache/activemq/command/SubscriptionInfo.java
View File

@ -90,7 +90,7 @@ public class SubscriptionInfo implements DataStructure {
return IntrospectionSupport.toString(this);
}
public int hasCode() {
public int hashCode() {
int h1 = clientId != null ? clientId.hashCode():-1;
int h2 = subcriptionName != null ? subcriptionName.hashCode():-1;
return h1 ^ h2;

3
activemq-core/src/main/java/org/apache/activemq/jndi/ReadOnlyContext.java
View File

@ -389,6 +389,7 @@ public class ReadOnlyContext implements Context, Serializable {
}
private class ListEnumeration extends LocalNamingEnumeration {
ListEnumeration(){}
public Object next() throws NamingException {
return nextElement();
}
@ -400,6 +401,8 @@ public class ReadOnlyContext implements Context, Serializable {
}
private class ListBindingEnumeration extends LocalNamingEnumeration {
ListBindingEnumeration(){
}
public Object next() throws NamingException {
return nextElement();
}

32
activemq-core/src/main/java/org/apache/activemq/kaha/impl/async/AsyncDataManager.java
View File

@ -61,8 +61,8 @@ public final class AsyncDataManager {
public static final int ITEM_HEAD_FOOT_SPACE=ITEM_HEAD_SPACE+ITEM_FOOT_SPACE;
public static final byte[] ITEM_HEAD_SOR=new byte[]{'S', 'O', 'R'}; //
public static final byte[] ITEM_HEAD_EOR=new byte[]{'E', 'O', 'R'}; //
static final byte[] ITEM_HEAD_SOR=new byte[]{'S', 'O', 'R'}; //
static final byte[] ITEM_HEAD_EOR=new byte[]{'E', 'O', 'R'}; //
public static final byte DATA_ITEM_TYPE=1;
public static final byte REDO_ITEM_TYPE=2;
@ -71,8 +71,8 @@ public final class AsyncDataManager {
public static final String DEFAULT_FILE_PREFIX="data-";
public static final int DEFAULT_MAX_FILE_LENGTH=1024*1024*32;
private File directory = new File(DEFAULT_DIRECTORY);
private String filePrefix=DEFAULT_FILE_PREFIX;
File directory = new File(DEFAULT_DIRECTORY);
String filePrefix=DEFAULT_FILE_PREFIX;
private int maxFileLength = DEFAULT_MAX_FILE_LENGTH;
private int preferedFileLength = DEFAULT_MAX_FILE_LENGTH-1024*512;
@ -101,8 +101,10 @@ public final class AsyncDataManager {
started=true;
directory.mkdirs();
synchronized(this){
controlFile=new ControlFile(new File(directory,filePrefix+"control"),CONTROL_RECORD_MAX_LENGTH);
controlFile.lock();
}
ByteSequence sequence = controlFile.load();
if( sequence != null && sequence.getLength()>0 ) {
@ -116,7 +118,7 @@ public final class AsyncDataManager {
File[] files=directory.listFiles(new FilenameFilter(){
public boolean accept(File dir,String n){
return dir.equals(dir)&&n.startsWith(filePrefix);
return dir.equals(directory)&&n.startsWith(filePrefix);
}
});
@ -252,8 +254,8 @@ public final class AsyncDataManager {
}
DataFile getDataFile(Location item) throws IOException{
Integer key=new Integer(item.getDataFileId());
DataFile dataFile=(DataFile) fileMap.get(key);
Integer key= Integer.valueOf(item.getDataFileId());
DataFile dataFile=fileMap.get(key);
if(dataFile==null){
log.error("Looking for key " + key + " but not found in fileMap: " + fileMap);
throw new IOException("Could not locate data file "+filePrefix+"-"+item.getDataFileId());
@ -265,14 +267,12 @@ public final class AsyncDataManager {
return (DataFile) dataFile.getNext();
}
public void close() throws IOException{
synchronized(this){
public synchronized void close() throws IOException{
if(!started){
return;
}
Scheduler.cancel(cleanupTask);
accessorPool.close();
}
storeState(false);
appender.close();
fileMap.clear();
@ -281,7 +281,7 @@ public final class AsyncDataManager {
started=false;
}
private synchronized void cleanup() {
synchronized void cleanup() {
if( accessorPool!=null ) {
accessorPool.disposeUnused();
}
@ -375,7 +375,7 @@ public final class AsyncDataManager {
}
}
private void removeDataFile(DataFile dataFile) throws IOException{
private synchronized void removeDataFile(DataFile dataFile) throws IOException{
// Make sure we don't delete too much data.
if( dataFile==currentWriteFile || mark==null || dataFile.getDataFileId() >= mark.getDataFileId() ) {
@ -414,7 +414,7 @@ public final class AsyncDataManager {
return mark;
}
public Location getNextLocation(Location location) throws IOException, IllegalStateException {
public synchronized Location getNextLocation(Location location) throws IOException, IllegalStateException {
Location cur = null;
@ -492,17 +492,17 @@ public final class AsyncDataManager {
storeState(sync);
}
private void storeState(boolean sync) throws IOException {
private synchronized void storeState(boolean sync) throws IOException{
ByteSequence state=marshallState();
appender.storeItem(state,Location.MARK_TYPE,sync);
controlFile.store(state,sync);
}
public Location write(ByteSequence data, boolean sync) throws IOException, IllegalStateException {
public synchronized Location write(ByteSequence data, boolean sync) throws IOException, IllegalStateException {
return appender.storeItem(data, Location.USER_TYPE, sync);
}
public Location write(ByteSequence data, byte type, boolean sync) throws IOException, IllegalStateException {
public synchronized Location write(ByteSequence data, byte type, boolean sync) throws IOException, IllegalStateException {
return appender.storeItem(data, type, sync);
}

15
activemq-core/src/main/java/org/apache/activemq/kaha/impl/async/DataFile.java
View File

@ -27,7 +27,7 @@ import org.apache.activemq.util.LinkedNode;
*
* @version $Revision: 1.1.1.1 $
*/
class DataFile extends LinkedNode implements Comparable {
class DataFile extends LinkedNode implements Comparable<DataFile> {
private final File file;
private final Integer dataFileId;
@ -39,7 +39,7 @@ class DataFile extends LinkedNode implements Comparable {
DataFile(File file, int number, int preferedSize){
this.file=file;
this.preferedSize = preferedSize;
this.dataFileId=new Integer(number);
this.dataFileId=Integer.valueOf(number);
length=(int)(file.exists()?file.length():0);
}
@ -98,11 +98,18 @@ class DataFile extends LinkedNode implements Comparable {
return file.delete();
}
public int compareTo(Object o) {
DataFile df = (DataFile) o;
public int compareTo(DataFile df) {
return dataFileId - df.dataFileId;
}
public boolean equals(Object o) {
boolean result = false;
if (o instanceof DataFile) {
result = compareTo((DataFile)o)==0;
}
return result;
}
}

3
activemq-core/src/main/java/org/apache/activemq/kaha/impl/async/DataFileAppender.java
View File

@ -56,9 +56,12 @@ class DataFileAppender {
}
public boolean equals(Object obj){
if(obj instanceof WriteKey){
WriteKey di=(WriteKey)obj;
return di.file==file&&di.offset==offset;
}
return false;
}
}
public class WriteBatch {

13
activemq-core/src/main/java/org/apache/activemq/kaha/impl/async/Location.java
View File

@ -132,4 +132,17 @@ public final class Location implements Comparable<Location> {
return dataFileId - l.dataFileId;
}
public boolean equals(Object o) {
boolean result = false;
if (o instanceof Location) {
result = compareTo((Location)o)==0;
}
return result;
}
public int hashCode() {
return dataFileId ^ offset;
}
}

16
activemq-core/src/main/java/org/apache/activemq/kaha/impl/container/BaseContainerImpl.java
View File

@ -188,12 +188,13 @@ public abstract class BaseContainerImpl{
}
}
protected final void delete(IndexItem key,IndexItem prev,IndexItem next){
protected final void delete(final IndexItem keyItem,final IndexItem prevItem,final IndexItem nextItem){
if(keyItem!=null){
try{
dataManager.removeInterestInFile(key.getKeyFile());
dataManager.removeInterestInFile(key.getValueFile());
prev=prev==null?root:prev;
next=next!=root?next:null;
IndexItem prev=prevItem==null?root:prevItem;
IndexItem next=nextItem!=root?nextItem:null;
dataManager.removeInterestInFile(keyItem.getKeyFile());
dataManager.removeInterestInFile(keyItem.getValueFile());
if(next!=null){
prev.setNextItem(next.getOffset());
next.setPreviousItem(prev.getOffset());
@ -202,12 +203,13 @@ public abstract class BaseContainerImpl{
prev.setNextItem(Item.POSITION_NOT_SET);
}
updateIndexes(prev);
indexManager.freeIndex(key);
indexManager.freeIndex(keyItem);
}catch(IOException e){
log.error("Failed to delete "+key,e);
log.error("Failed to delete "+keyItem,e);
throw new RuntimeStoreException(e);
}
}
}
protected final void checkClosed(){
if(closed){

11
activemq-core/src/main/java/org/apache/activemq/kaha/impl/container/ContainerKeySet.java
View File

@ -115,13 +115,14 @@ public class ContainerKeySet extends ContainerCollectionSupport implements Set{
}
public String toString() {
String result ="ContainerKeySet[";
StringBuffer result =new StringBuffer(32);
result.append("ContainerKeySet[");
IndexItem item = container.getInternalList().getRoot();
while ((item = container.getInternalList().getNextEntry(item)) != null) {
result += container.getKey(item);
result += ",";
result.append(container.getKey(item));
result.append(",");
}
result +="]";
return result;
result.append("]");
return result.toString();
}
}

9
activemq-core/src/main/java/org/apache/activemq/kaha/impl/container/ListContainerImpl.java
View File

@ -122,6 +122,10 @@ public class ListContainerImpl extends BaseContainerImpl implements ListContaine
return result;
}
public int hashCode() {
return super.hashCode();
}
/*
* (non-Javadoc)
*
@ -158,13 +162,14 @@ public class ListContainerImpl extends BaseContainerImpl implements ListContaine
public synchronized Object removeFirst(){
load();
Object result=null;
IndexItem item=(IndexItem)indexList.getFirst();
IndexItem item=indexList.getFirst();
if(item!=null){
itemRemoved(0);
result=getValue(item);
IndexItem prev=root;
IndexItem next=indexList.size()>1?(IndexItem)indexList.get(1):null;
indexList.removeFirst();
delete(item,prev,next);
item=null;
}
@ -306,6 +311,7 @@ public class ListContainerImpl extends BaseContainerImpl implements ListContaine
IndexItem prev=indexList.getPrevEntry(item);
IndexItem next=indexList.getNextEntry(item);
indexList.remove(item);
delete(item,prev,next);
}
@ -591,7 +597,6 @@ public class ListContainerImpl extends BaseContainerImpl implements ListContaine
*/
public synchronized ListIterator listIterator(){
load();
IndexItem start= indexList.getFirst();
return new ContainerListIterator(this,indexList,indexList.getRoot());
}

5
activemq-core/src/main/java/org/apache/activemq/kaha/impl/container/MapContainerImpl.java
View File

@ -497,13 +497,12 @@ public final class MapContainerImpl extends BaseContainerImpl implements MapCont
protected synchronized IndexItem write(Object key,Object value){
IndexItem index=null;
try{
if(key!=null){
index=indexManager.createNewIndex();
StoreLocation data=dataManager.storeDataItem(keyMarshaller,key);
index.setKeyData(data);
}
if(value!=null){
StoreLocation data=dataManager.storeDataItem(valueMarshaller,value);
data=dataManager.storeDataItem(valueMarshaller,value);
index.setValueData(data);
}
IndexItem prev=indexList.getLast();

2
activemq-core/src/main/java/org/apache/activemq/kaha/impl/data/DataFile.java
View File

@ -38,7 +38,7 @@ class DataFile{
DataFile(File file,int number){
this.file=file;
this.number=new Integer(number);
this.number=Integer.valueOf(number);
length=file.exists()?file.length():0;
}

10
activemq-core/src/main/java/org/apache/activemq/kaha/impl/data/DataManagerImpl.java
View File

@ -43,7 +43,7 @@ public final class DataManagerImpl implements DataManager {
private static final Log log=LogFactory.getLog(DataManagerImpl.class);
public static final long MAX_FILE_LENGTH=1024*1024*32;
private static final String NAME_PREFIX="data-";
private final File dir;
private final File directory;
private final String name;
private SyncDataFileReader reader;
private SyncDataFileWriter writer;
@ -59,14 +59,14 @@ public final class DataManagerImpl implements DataManager {
private String dataFilePrefix;
public DataManagerImpl(File dir, final String name){
this.dir=dir;
this.directory=dir;
this.name=name;
dataFilePrefix = NAME_PREFIX+name+"-";
// build up list of current dataFiles
File[] files=dir.listFiles(new FilenameFilter(){
public boolean accept(File dir,String n){
return dir.equals(dir)&&n.startsWith(dataFilePrefix);
return dir.equals(directory)&&n.startsWith(dataFilePrefix);
}
});
if(files!=null){
@ -86,7 +86,7 @@ public final class DataManagerImpl implements DataManager {
private DataFile createAndAddDataFile(int num){
String fileName=dataFilePrefix+num;
File file=new File(dir,fileName);
File file=new File(directory,fileName);
DataFile result=new DataFile(file,num);
fileMap.put(result.getNumber(),result);
return result;
@ -114,7 +114,7 @@ public final class DataManagerImpl implements DataManager {
}
DataFile getDataFile(StoreLocation item) throws IOException{
Integer key=new Integer(item.getFile());
Integer key=Integer.valueOf(item.getFile());
DataFile dataFile=(DataFile) fileMap.get(key);
if(dataFile==null){
log.error("Looking for key " + key + " but not found in fileMap: " + fileMap);

8
activemq-core/src/main/java/org/apache/activemq/kaha/impl/index/hash/HashBin.java
View File

@ -297,12 +297,8 @@ class HashBin {
}
}
private void doUnderFlow(int index) {
int pageNo = index / maximumEntries;
int nextPageNo = pageNo + 1;
if (nextPageNo < hashPages.size()) {
}
HashPageInfo info = hashPages.get(pageNo);
private void doUnderFlow(@SuppressWarnings("unused") int index) {
//does little
}
private void end() throws IOException {

2
activemq-core/src/main/java/org/apache/activemq/kaha/impl/index/hash/HashEntry.java
View File

@ -43,7 +43,7 @@ class HashEntry implements Comparable{
return compareTo(o)==0;
}
public int hasCode(){
public int hashCode(){
return key.hashCode();
}

2
activemq-core/src/main/java/org/apache/activemq/kaha/impl/index/hash/HashIndex.java
View File

@ -260,7 +260,7 @@ public class HashIndex implements Index{
public synchronized void delete() throws IOException{
unload();
if(file.exists()){
boolean result=file.delete();
file.delete();
}
length=0;
}

7
activemq-core/src/main/java/org/apache/activemq/kaha/impl/index/hash/HashPage.java
View File

@ -225,9 +225,12 @@ class HashPage {
void dump() {
String str = this + ": ";
StringBuffer str = new StringBuffer(32);
str.append(toString());
str.append(": ");
for (HashEntry entry : hashIndexEntries) {
str += entry + ",";
str .append(entry);
str.append(",");
}
log.info(str);
}

2
activemq-core/src/main/java/org/apache/activemq/kaha/impl/index/tree/TreeEntry.java
View File

@ -45,7 +45,7 @@ class TreeEntry implements Comparable{
return compareTo(o)==0;
}
public int hasCode(){
public int hashCode(){
return key.hashCode();
}

2
activemq-core/src/main/java/org/apache/activemq/memory/CacheEvictionUsageListener.java
View File

@ -50,7 +50,7 @@ public class CacheEvictionUsageListener implements UsageListener {
}, "Cache Evictor: "+System.identityHashCode(this));
}
private boolean evictMessages() {
boolean evictMessages() {
// Try to take the memory usage down below the low mark.
try {
log.debug("Evicting cache memory usage: "+usageManager.getPercentUsage());

2
activemq-core/src/main/java/org/apache/activemq/network/ForwardingBridge.java
View File

@ -125,7 +125,7 @@ public class ForwardingBridge implements Service{
/**
* @throws IOException
*/
private void startBridge() throws IOException {
final void startBridge() throws IOException {
connectionInfo = new ConnectionInfo();
connectionInfo.setConnectionId(new ConnectionId(idGenerator.generateId()));
connectionInfo.setClientId(clientId);

2
activemq-core/src/main/java/org/apache/activemq/pool/ConnectionPool.java
View File

@ -196,7 +196,7 @@ public class ConnectionPool {
protected class Synchronization implements javax.transaction.Synchronization {
private final PooledSession session;
private Synchronization(PooledSession session) {
protected Synchronization(PooledSession session) {
this.session = session;
}

8
activemq-core/src/main/java/org/apache/activemq/state/ConnectionStateTracker.java
View File

@ -169,18 +169,22 @@ public class ConnectionStateTracker extends CommandVisitorAdapter {
}
public Response processAddDestination(DestinationInfo info){
if(info!=null){
ConnectionState cs=(ConnectionState)connectionStates.get(info.getConnectionId());
if( cs != null && info != null && info.getDestination().isTemporary() ) {
if(cs!=null&&info.getDestination().isTemporary()){
cs.addTempDestination(info);
}
}
return TRACKED_RESPONSE_MARKER;
}
public Response processRemoveDestination(DestinationInfo info){
if(info!=null){
ConnectionState cs=(ConnectionState)connectionStates.get(info.getConnectionId());
if( cs != null && info != null && info.getDestination().isTemporary() ) {
if(cs!=null&&info.getDestination().isTemporary()){
cs.removeTempDestination(info.getDestination());
}
}
return TRACKED_RESPONSE_MARKER;
}

6
activemq-core/src/main/java/org/apache/activemq/store/amq/AMQMessageStore.java
View File

@ -130,7 +130,7 @@ public class AMQMessageStore implements MessageStore{
}
}
private void addMessage(final Message message,final Location location) throws InterruptedIOException{
void addMessage(final Message message,final Location location) throws InterruptedIOException{
ReferenceData data=new ReferenceData();
data.setExpiration(message.getExpiration());
data.setFileId(location.getDataFileId());
@ -205,7 +205,7 @@ public class AMQMessageStore implements MessageStore{
}
}
private void removeMessage(final MessageAck ack,final Location location) throws InterruptedIOException{
final void removeMessage(final MessageAck ack,final Location location) throws InterruptedIOException{
ReferenceData data;
synchronized(this){
lastLocation=location;
@ -273,7 +273,7 @@ public class AMQMessageStore implements MessageStore{
* @return
* @throws IOException
*/
private void asyncWrite(){
void asyncWrite(){
try{
CountDownLatch countDown;
synchronized(this){

12
activemq-core/src/main/java/org/apache/activemq/store/amq/AMQPersistenceAdapter.java
View File

@ -218,8 +218,10 @@ public class AMQPersistenceAdapter implements PersistenceAdapter, UsageListener,
if(!started.compareAndSet(true,false))
return;
this.usageManager.removeUsageListener(this);
synchronized(this){
Scheduler.cancel(periodicCheckpointTask);
Scheduler.cancel(periodicCleanupTask);
}
Iterator<AMQMessageStore> iterator=queues.values().iterator();
while(iterator.hasNext()){
AMQMessageStore ms=iterator.next();
@ -232,7 +234,9 @@ public class AMQPersistenceAdapter implements PersistenceAdapter, UsageListener,
}
// Take one final checkpoint and stop checkpoint processing.
checkpoint(true);
synchronized(this){
checkpointTask.shutdown();
}
queues.clear();
topics.clear();
IOException firstException=null;
@ -259,8 +263,8 @@ public class AMQPersistenceAdapter implements PersistenceAdapter, UsageListener,
CountDownLatch latch=null;
synchronized(this){
latch=nextCheckpointCountDownLatch;
}
checkpointTask.wakeup();
}
if(sync){
if(log.isDebugEnabled()){
log.debug("Waitng for checkpoint to complete.");
@ -585,7 +589,7 @@ public class AMQPersistenceAdapter implements PersistenceAdapter, UsageListener,
return transactionStore;
}
public void deleteAllMessages() throws IOException{
public synchronized void deleteAllMessages() throws IOException{
deleteAllMessages=true;
}
@ -669,11 +673,11 @@ public class AMQPersistenceAdapter implements PersistenceAdapter, UsageListener,
this.maxCheckpointWorkers=maxCheckpointWorkers;
}
public File getDirectory(){
public synchronized File getDirectory(){
return directory;
}
public void setDirectory(File directory){
public synchronized void setDirectory(File directory){
this.directory=directory;
}

2
activemq-core/src/main/java/org/apache/activemq/store/amq/AMQTopicMessageStore.java
View File

@ -143,7 +143,7 @@ public class AMQTopicMessageStore extends AMQMessageStore implements TopicMessag
* @param key
* @throws InterruptedIOException
*/
private void acknowledge(MessageId messageId,Location location,SubscriptionKey key) throws InterruptedIOException{
protected void acknowledge(MessageId messageId,Location location,SubscriptionKey key) throws InterruptedIOException{
synchronized(this){
lastLocation=location;
ackedLastAckLocations.put(key,messageId);

15
activemq-core/src/main/java/org/apache/activemq/store/journal/JournalMessageStore.java
View File

@ -125,7 +125,7 @@ public class JournalMessageStore implements MessageStore {
}
}
private void addMessage(final Message message, final RecordLocation location) {
void addMessage(final Message message, final RecordLocation location) {
synchronized (this) {
lastLocation = location;
MessageId id = message.getMessageId();
@ -187,7 +187,7 @@ public class JournalMessageStore implements MessageStore {
}
}
private void removeMessage(final MessageAck ack, final RecordLocation location) {
final void removeMessage(final MessageAck ack, final RecordLocation location) {
synchronized (this) {
lastLocation = location;
MessageId id = ack.getLastMessageId();
@ -253,6 +253,7 @@ public class JournalMessageStore implements MessageStore {
ConnectionContext context = transactionTemplate.getContext();
// Checkpoint the added messages.
synchronized(JournalMessageStore.this){
Iterator iterator=cpAddedMessageIds.values().iterator();
while(iterator.hasNext()){
Message message=(Message)iterator.next();
@ -261,25 +262,22 @@ public class JournalMessageStore implements MessageStore {
}catch(Throwable e){
log.warn("Message could not be added to long term store: "+e.getMessage(),e);
}
size+=message.getSize();
message.decrementReferenceCount();
// Commit the batch if it's getting too big
if(size>=maxCheckpointMessageAddSize){
persitanceAdapter.commitTransaction(context);
persitanceAdapter.beginTransaction(context);
size=0;
}
}
}
persitanceAdapter.commitTransaction(context);
persitanceAdapter.beginTransaction(context);
// Checkpoint the removed messages.
iterator = cpRemovedMessageLocations.iterator();
Iterator iterator = cpRemovedMessageLocations.iterator();
while (iterator.hasNext()) {
try {
MessageAck ack = (MessageAck) iterator.next();
@ -303,7 +301,8 @@ public class JournalMessageStore implements MessageStore {
if( cpActiveJournalLocations.size() > 0 ) {
Collections.sort(cpActiveJournalLocations);
return (RecordLocation) cpActiveJournalLocations.get(0);
} else {
}
synchronized (this){
return lastLocation;
}
}

10
activemq-core/src/main/java/org/apache/activemq/store/journal/JournalPersistenceAdapter.java
View File

@ -92,8 +92,8 @@ public class JournalPersistenceAdapter implements PersistenceAdapter, JournalEve
private final ConcurrentHashMap topics = new ConcurrentHashMap();
private UsageManager usageManager;
private long checkpointInterval = 1000 * 60 * 5;
private long lastCheckpointRequest = System.currentTimeMillis();
long checkpointInterval = 1000 * 60 * 5;
long lastCheckpointRequest = System.currentTimeMillis();
private long lastCleanup = System.currentTimeMillis();
private int maxCheckpointWorkers = 10;
private int maxCheckpointMessageAddSize = 1024*1024;
@ -112,7 +112,11 @@ public class JournalPersistenceAdapter implements PersistenceAdapter, JournalEve
final Runnable createPeriodicCheckpointTask() {
return new Runnable() {
public void run() {
if( System.currentTimeMillis()>lastCheckpointRequest+checkpointInterval ) {
long lastTime = 0;
synchronized(this) {
lastTime = lastCheckpointRequest;
}
if( System.currentTimeMillis()>lastTime+checkpointInterval ) {
checkpoint(false, true);
}
}

2
activemq-core/src/main/java/org/apache/activemq/store/journal/JournalTopicMessageStore.java
View File

@ -142,7 +142,7 @@ public class JournalTopicMessageStore extends JournalMessageStore implements Top
* @param location
* @param key
*/
private void acknowledge(MessageId messageId, RecordLocation location, SubscriptionKey key) {
protected void acknowledge(MessageId messageId, RecordLocation location, SubscriptionKey key) {
synchronized(this) {
lastLocation = location;
ackedLastAckLocations.put(key, messageId);

2
activemq-core/src/main/java/org/apache/activemq/store/kahadaptor/KahaMessageStore.java
View File

@ -174,7 +174,7 @@ public class KahaMessageStore implements MessageStore{
* @param nextToDispatch
* @see org.apache.activemq.store.MessageStore#resetBatching(org.apache.activemq.command.MessageId)
*/
public void resetBatching(){
public synchronized void resetBatching(){
batchEntry=null;
}

2
activemq-core/src/main/java/org/apache/activemq/store/kahadaptor/KahaReferenceStore.java
View File

@ -149,7 +149,7 @@ public class KahaReferenceStore implements ReferenceStore{
messageContainer.clear();
}
public void resetBatching(){
public synchronized void resetBatching(){
batchEntry=null;
lastBatchId=null;
}

2
activemq-core/src/main/java/org/apache/activemq/store/kahadaptor/KahaReferenceStoreAdapter.java
View File

@ -212,7 +212,7 @@ public class KahaReferenceStoreAdapter extends KahaPersistenceAdapter implements
}
@Override
public void setDirectory(File directory){
public synchronized void setDirectory(File directory){
File file = new File(directory,"data");
super.setDirectory(file);
this.stateStore=createStateStore(directory);

2
activemq-core/src/main/java/org/apache/activemq/store/kahadaptor/KahaTransactionStore.java
View File

@ -138,7 +138,7 @@ public class KahaTransactionStore implements TransactionStore{
* @param ack
* @throws IOException
*/
private void removeMessage(final MessageStore destination,final MessageAck ack) throws IOException{
final void removeMessage(final MessageStore destination,final MessageAck ack) throws IOException{
if(ack.isInTransaction()){
KahaTransaction tx=getOrCreateTx(ack.getTransactionId());
tx.add((KahaMessageStore) destination,ack);

3
activemq-core/src/main/java/org/apache/activemq/store/kahadaptor/TopicSubContainer.java
View File

@ -27,7 +27,6 @@ import java.util.Iterator;
public class TopicSubContainer {
private transient ListContainer listContainer;
private transient StoreEntry batchEntry;
private transient String lastBatchId;
public TopicSubContainer(ListContainer container) {
this.listContainer = container;
@ -45,12 +44,10 @@ public class TopicSubContainer {
* @param batchEntry the batchEntry to set
*/
public void setBatchEntry(String id,StoreEntry batchEntry) {
this.lastBatchId=id;
this.batchEntry = batchEntry;
}
public void reset() {
lastBatchId=null;
batchEntry = null;
}

2
activemq-core/src/main/java/org/apache/activemq/store/memory/MemoryTransactionStore.java
View File

@ -229,7 +229,7 @@ public class MemoryTransactionStore implements TransactionStore {
* @param ack
* @throws IOException
*/
private void removeMessage(final MessageStore destination,final MessageAck ack) throws IOException {
final void removeMessage(final MessageStore destination,final MessageAck ack) throws IOException {
if( doingRecover )
return;

2
activemq-core/src/main/java/org/apache/activemq/thread/DedicatedTaskRunner.java
View File

@ -82,7 +82,7 @@ class DedicatedTaskRunner implements TaskRunner {
shutdown(0);
}
private void runTask() {
final void runTask() {
try {
while( true ) {

2
activemq-core/src/main/java/org/apache/activemq/thread/PooledTaskRunner.java
View File

@ -96,7 +96,7 @@ class PooledTaskRunner implements TaskRunner {
public void shutdown() throws InterruptedException {
shutdown(0);
}
private void runTask() {
final void runTask() {
synchronized (runable) {
queued = false;

4
activemq-core/src/main/java/org/apache/activemq/transport/InactivityMonitor.java
View File

@ -68,7 +68,7 @@ public class InactivityMonitor extends TransportFilter {
}
private void writeCheck() {
final void writeCheck() {
synchronized(writeChecker) {
if( inSend.get() ) {
log.trace("A send is in progress");
@ -90,7 +90,7 @@ public class InactivityMonitor extends TransportFilter {
}
}
private void readCheck() {
final void readCheck() {
synchronized(readChecker) {
if( inReceive.get() ) {
log.trace("A receive is in progress");

15
activemq-core/src/main/java/org/apache/activemq/transport/discovery/rendezvous/RendezvousDiscoveryAgent.java
View File

@ -60,8 +60,6 @@ public class RendezvousDiscoveryAgent implements DiscoveryAgent, ServiceListener
private String group = "default";
private final CopyOnWriteArrayList serviceInfos = new CopyOnWriteArrayList();
private String brokerName;
// DiscoveryAgent interface
//-------------------------------------------------------------------------
public void start() throws Exception {
@ -232,11 +230,16 @@ public class RendezvousDiscoveryAgent implements DiscoveryAgent, ServiceListener
return "_" + group+"."+TYPE_SUFFIX;
}
public void setBrokerName(String brokerName) {
this.brokerName = brokerName;
}
public void serviceFailed(DiscoveryEvent event) throws IOException {
// TODO: is there a way to notify the JmDNS that the service failed?
}
/**
* @param brokerName
* @see org.apache.activemq.transport.discovery.DiscoveryAgent#setBrokerName(java.lang.String)
*/
public void setBrokerName(String brokerName){
// implementation of interface
}
}

10
activemq-core/src/main/java/org/apache/activemq/transport/failover/FailoverTransport.java
View File

@ -91,7 +91,7 @@ public class FailoverTransport implements CompositeTransport {
return;
}
if (command.isResponse()) {
Object object = requestMap.remove(new Integer(((Response) command).getCorrelationId()));
Object object = requestMap.remove(Integer.valueOf(((Response) command).getCorrelationId()));
if( object!=null && object.getClass() == Tracked.class ) {
((Tracked)object).onResponses();
}
@ -231,7 +231,7 @@ public class FailoverTransport implements CompositeTransport {
}, "ActiveMQ Failover Worker: "+System.identityHashCode(this));
}
private void handleTransportFailure(IOException e) throws InterruptedException {
final void handleTransportFailure(IOException e) throws InterruptedException {
if (transportListener != null){
transportListener.transportInterupted();
}
@ -382,9 +382,9 @@ public class FailoverTransport implements CompositeTransport {
// it later.
Tracked tracked = stateTracker.track(command);
if( tracked!=null && tracked.isWaitingForResponse() ) {
requestMap.put(new Integer(command.getCommandId()), tracked);
requestMap.put(Integer.valueOf(command.getCommandId()), tracked);
} else if ( tracked==null && command.isResponseRequired()) {
requestMap.put(new Integer(command.getCommandId()), command);
requestMap.put(Integer.valueOf(command.getCommandId()), command);
}
// Send the message.
@ -398,7 +398,7 @@ public class FailoverTransport implements CompositeTransport {
// since we will retry in this method.. take it out of the request
// map so that it is not sent 2 times on recovery
if( command.isResponseRequired() ) {
requestMap.remove(new Integer(command.getCommandId()));
requestMap.remove(Integer.valueOf(command.getCommandId()));
}
// Rethrow the exception so it will handled by the outer catch

16
activemq-core/src/main/java/org/apache/activemq/util/MessageComparatorSupport.java
View File

@ -19,6 +19,7 @@ package org.apache.activemq.util;
import javax.jms.Message;
import java.io.Serializable;
import java.util.Comparator;
/**
@ -26,7 +27,7 @@ import java.util.Comparator;
*
* @version $Revision$
*/
public abstract class MessageComparatorSupport implements Comparator {
public abstract class MessageComparatorSupport implements Comparator, Serializable {
public int compare(Object object1, Object object2) {
Message command1 = (Message) object1;
@ -36,11 +37,20 @@ public abstract class MessageComparatorSupport implements Comparator {
protected abstract int compareMessages(Message message1, Message message2);
protected int compareComparators(Comparable comparable, Comparable comparable2) {
if (comparable != null) {
protected int compareComparators(final Comparable comparable, final Comparable comparable2) {
if (comparable == null && comparable2 == null) {
return 0;
}
else if (comparable != null) {
if (comparable2== null) {
return 1;
}
return comparable.compareTo(comparable2);
}
else if (comparable2 != null) {
if (comparable== null) {
return -11;
}
return comparable2.compareTo(comparable) * -1;
}
return 0;