package net.spy.memcached.protocol.binary;
import java.util.Collection;
import java.util.Collections;
import net.spy.memcached.ops.ConcatenationOperation;
import net.spy.memcached.ops.ConcatenationType;
import net.spy.memcached.ops.OperationCallback;
import net.spy.memcached.ops.OperationStatus;
class ConcatenationOperationImpl extends OperationImpl
implements ConcatenationOperation {
private static final int APPEND=0x0e;
private static final int PREPEND=0x0f;
private final String key;
private final long cas;
private final ConcatenationType catType;
private final byte[] data;
private static int cmdMap(ConcatenationType t) {
int rv=-1;
switch(t) {
case append: rv=APPEND; break;
case prepend: rv=PREPEND; break;
}
// Check fall-through.
assert rv != -1 : "Unhandled store type: " + t;
return rv;
}
public ConcatenationOperationImpl(ConcatenationType t, String k,
byte[] d, long c, OperationCallback cb) {
super(cmdMap(t), generateOpaque(), cb);
key=k;
data=d;
cas=c;
catType=t;
}
@Override
public void initialize() {
prepareBuffer(key, cas, data);
}
@Override
protected OperationStatus getStatusForErrorCode(int errCode, byte[] errPl) {
OperationStatus baseStatus = super.getStatusForErrorCode(errCode, errPl);
if (baseStatus != null) {
return baseStatus;
}
OperationStatus rv=null;
switch(errCode) {
case ERR_EXISTS:
rv=EXISTS_STATUS;
break;
case ERR_NOT_FOUND:
rv=NOT_FOUND_STATUS;
break;
case ERR_NOT_STORED:
rv=NOT_FOUND_STATUS;
break;
}
return rv;
}
public Collection<String> getKeys() {
return Collections.singleton(key);
}
public long getCasValue() {
return cas;
}
public byte[] getData() {
return data;
}
public ConcatenationType getStoreType() {
return catType;
}
}