package org.infinispan.commands.write;
import org.infinispan.metadata.Metadata;
import org.infinispan.commands.AbstractFlagAffectedCommand;
import org.infinispan.commands.MetadataAwareCommand;
import org.infinispan.commands.Visitor;
import org.infinispan.container.entries.MVCCEntry;
import org.infinispan.context.Flag;
import org.infinispan.context.InvocationContext;
import org.infinispan.lifecycle.ComponentStatus;
import org.infinispan.notifications.cachelistener.CacheNotifier;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
/**
* @author Mircea.Markus@jboss.com
* @since 4.0
*/
public class PutMapCommand extends AbstractFlagAffectedCommand implements WriteCommand, MetadataAwareCommand {
public static final byte COMMAND_ID = 9;
Map<Object, Object> map;
CacheNotifier notifier;
Metadata metadata;
boolean isForwarded = false;
public PutMapCommand() {
}
public PutMapCommand(Map<?, ?> map, CacheNotifier notifier, Metadata metadata, Set<Flag> flags) {
this.map = (Map<Object, Object>) map;
this.notifier = notifier;
this.metadata = metadata;
this.flags = flags;
}
public void init(CacheNotifier notifier) {
this.notifier = notifier;
}
@Override
public Object acceptVisitor(InvocationContext ctx, Visitor visitor) throws Throwable {
return visitor.visitPutMapCommand(ctx, this);
}
private MVCCEntry lookupMvccEntry(InvocationContext ctx, Object key) {
return (MVCCEntry) ctx.lookupEntry(key);
}
@Override
public Object perform(InvocationContext ctx) throws Throwable {
Map<Object, Object> previousValues = new HashMap<Object, Object>();
for (Entry<Object, Object> e : map.entrySet()) {
Object key = e.getKey();
MVCCEntry me = lookupMvccEntry(ctx, key);
if (me != null) {
Object value = me.getValue();
previousValues.put(key, value);
notifier.notifyCacheEntryModified(key, e.getValue(), value, me.getMetadata(), true, ctx, this);
me.setValue(e.getValue());
me.setChanged(true);
}
}
return previousValues;
}
public Map<Object, Object> getMap() {
return map;
}
public void setMap(Map<Object, Object> map) {
this.map = map;
}
@Override
public byte getCommandId() {
return COMMAND_ID;
}
@Override
public Object[] getParameters() {
return new Object[]{map, metadata, isForwarded, Flag.copyWithoutRemotableFlags(flags)};
}
@Override
public void setParameters(int commandId, Object[] parameters) {
map = (Map<Object, Object>) parameters[0];
metadata = (Metadata) parameters[1];
isForwarded = (Boolean) parameters[2];
if (parameters.length > 3) {
this.flags = (Set<Flag>) parameters[3];
}
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
PutMapCommand that = (PutMapCommand) o;
if (metadata != null ? !metadata.equals(that.metadata) : that.metadata != null) return false;
if (map != null ? !map.equals(that.map) : that.map != null) return false;
return true;
}
@Override
public int hashCode() {
int result = map != null ? map.hashCode() : 0;
result = 31 * result + (metadata != null ? metadata.hashCode() : 0);
return result;
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("PutMapCommand{map={");
if (!map.isEmpty()) {
Iterator<Entry<Object, Object>> it = map.entrySet().iterator();
int i = 0;
for (;;) {
Entry<Object, Object> e = it.next();
sb.append(e.getKey()).append('=').append(e.getValue());
if (!it.hasNext()) {
break;
}
if (i > 100) {
sb.append(" ...");
break;
}
sb.append(", ");
i++;
}
}
sb.append("}, flags=").append(flags)
.append(", metadata=").append(metadata)
.append(", isForwarded=").append(isForwarded)
.append("}");
return sb.toString();
}
@Override
public boolean shouldInvoke(InvocationContext ctx) {
return true;
}
@Override
public boolean isSuccessful() {
return true;
}
@Override
public boolean isConditional() {
return false;
}
@Override
public ValueMatcher getValueMatcher() {
return ValueMatcher.MATCH_ALWAYS;
}
@Override
public void setValueMatcher(ValueMatcher valueMatcher) {
// Do nothing
}
@Override
public Set<Object> getAffectedKeys() {
return map.keySet();
}
@Override
public void updateStatusFromRemoteResponse(Object remoteResponse) {
// Do nothing
}
@Override
public boolean isReturnValueExpected() {
return false;
}
@Override
public boolean canBlock() {
return true;
}
@Override
public boolean ignoreCommandOnStatus(ComponentStatus status) {
return false;
}
@Override
public Metadata getMetadata() {
return metadata;
}
@Override
public void setMetadata(Metadata metadata) {
this.metadata = metadata;
}
/**
* For non transactional caches that support concurrent writes (default), the commands are forwarded between nodes,
* e.g.:
* - commands is executed on node A, but some of the keys should be locked on node B
* - the command is send to the main owner (B)
* - B tries to acquire lock on the keys it owns, then forwards the commands to the other owners as well
* - at this last stage, the command has the "isForwarded" flag set to true.
* @return
*/
public boolean isForwarded() {
return isForwarded;
}
/**
* @see #isForwarded()
*/
public void setForwarded(boolean forwarded) {
isForwarded = forwarded;
}
}