| 1 | package net.spy.memcached.protocol.binary; |
| 2 | |
| 3 | import java.util.Collection; |
| 4 | import java.util.Collections; |
| 5 | |
| 6 | import net.spy.memcached.ops.ConcatenationOperation; |
| 7 | import net.spy.memcached.ops.ConcatenationType; |
| 8 | import net.spy.memcached.ops.OperationCallback; |
| 9 | import net.spy.memcached.ops.OperationStatus; |
| 10 | |
| 11 | class ConcatenationOperationImpl extends OperationImpl |
| 12 | implements ConcatenationOperation { |
| 13 | |
| 14 | private static final int APPEND=0x0e; |
| 15 | private static final int PREPEND=0x0f; |
| 16 | |
| 17 | private final String key; |
| 18 | private final long cas; |
| 19 | private final ConcatenationType catType; |
| 20 | private final byte[] data; |
| 21 | |
| 22 | private static int cmdMap(ConcatenationType t) { |
| 23 | int rv=-1; |
| 24 | switch(t) { |
| 25 | case append: rv=APPEND; break; |
| 26 | case prepend: rv=PREPEND; break; |
| 27 | } |
| 28 | // Check fall-through. |
| 29 | assert rv != -1 : "Unhandled store type: " + t; |
| 30 | return rv; |
| 31 | } |
| 32 | |
| 33 | public ConcatenationOperationImpl(ConcatenationType t, String k, |
| 34 | byte[] d, long c, OperationCallback cb) { |
| 35 | super(cmdMap(t), generateOpaque(), cb); |
| 36 | key=k; |
| 37 | data=d; |
| 38 | cas=c; |
| 39 | catType=t; |
| 40 | } |
| 41 | |
| 42 | @Override |
| 43 | public void initialize() { |
| 44 | prepareBuffer(key, cas, data); |
| 45 | } |
| 46 | |
| 47 | @Override |
| 48 | protected OperationStatus getStatusForErrorCode(int errCode, byte[] errPl) { |
| 49 | OperationStatus rv=null; |
| 50 | switch(errCode) { |
| 51 | case ERR_EXISTS: |
| 52 | rv=EXISTS_STATUS; |
| 53 | break; |
| 54 | case ERR_NOT_FOUND: |
| 55 | rv=NOT_FOUND_STATUS; |
| 56 | break; |
| 57 | case ERR_NOT_STORED: |
| 58 | rv=NOT_FOUND_STATUS; |
| 59 | break; |
| 60 | } |
| 61 | return rv; |
| 62 | } |
| 63 | |
| 64 | public Collection<String> getKeys() { |
| 65 | return Collections.singleton(key); |
| 66 | } |
| 67 | |
| 68 | public long getCasValue() { |
| 69 | return cas; |
| 70 | } |
| 71 | |
| 72 | public byte[] getData() { |
| 73 | return data; |
| 74 | } |
| 75 | |
| 76 | public ConcatenationType getStoreType() { |
| 77 | return catType; |
| 78 | } |
| 79 | |
| 80 | } |