Examples with LobDataDatabase org.h2.value.lob.LobDataDatabase used on opensource projects

Example 1 with LobDataDatabase

use of org.h2.value.lob.LobDataDatabase in project h2database by h2database.

the class LobStorageMap method copyLob.

@Override
public ValueLob copyLob(ValueLob old, int tableId) {
    MVStore.TxCounter txCounter = mvStore.registerVersionUsage();
    try {
        final LobDataDatabase lobData = (LobDataDatabase) old.getLobData();
        final int type = old.getValueType();
        final long oldLobId = lobData.getLobId();
        long octetLength = old.octetLength();
        // get source lob
        final byte[] streamStoreId;
        if (isTemporaryLob(lobData.getTableId())) {
            streamStoreId = tempLobMap.get(oldLobId);
        } else {
            BlobMeta value = lobMap.get(oldLobId);
            streamStoreId = value.streamStoreId;
        }
        // create destination lob
        final long newLobId = generateLobId();
        if (isTemporaryLob(tableId)) {
            tempLobMap.put(newLobId, streamStoreId);
        } else {
            BlobMeta value = new BlobMeta(streamStoreId, tableId, type == Value.CLOB ? old.charLength() : octetLength, 0);
            lobMap.put(newLobId, value);
        }
        BlobReference refMapKey = new BlobReference(streamStoreId, newLobId);
        refMap.put(refMapKey, ValueNull.INSTANCE);
        LobDataDatabase newLobData = new LobDataDatabase(database, tableId, newLobId);
        ValueLob lob = type == Value.BLOB ? new ValueBlob(newLobData, octetLength) : new ValueClob(newLobData, octetLength, old.charLength());
        if (TRACE) {
            trace("copy " + lobData.getTableId() + "/" + lobData.getLobId() + " > " + tableId + "/" + newLobId);
        }
        return lob;
    } finally {
        mvStore.deregisterVersionUsage(txCounter);
    }
}

Example 2 with LobDataDatabase

use of org.h2.value.lob.LobDataDatabase in project h2database by h2database.

the class LobStorageMap method createBlob.

private ValueBlob createBlob(InputStream in) throws IOException {
    byte[] streamStoreId;
    try {
        streamStoreId = streamStore.put(in);
    } catch (Exception e) {
        throw DataUtils.convertToIOException(e);
    }
    long lobId = generateLobId();
    long length = streamStore.length(streamStoreId);
    final int tableId = LobStorageFrontend.TABLE_TEMP;
    tempLobMap.put(lobId, streamStoreId);
    BlobReference key = new BlobReference(streamStoreId, lobId);
    refMap.put(key, ValueNull.INSTANCE);
    ValueBlob lob = new ValueBlob(new LobDataDatabase(database, tableId, lobId), length);
    if (TRACE) {
        trace("create " + tableId + "/" + lobId);
    }
    return lob;
}

Example 3 with LobDataDatabase

use of org.h2.value.lob.LobDataDatabase in project h2database by h2database.

the class ValueDataType method readLobDataDatabase.

private LobDataDatabase readLobDataDatabase(ByteBuffer buff) {
    int tableId = readVarInt(buff);
    long lobId = readVarLong(buff);
    LobDataDatabase lobData = new LobDataDatabase(handler, tableId, lobId);
    return lobData;
}

Example 4 with LobDataDatabase

use of org.h2.value.lob.LobDataDatabase in project h2database by h2database.

the class ValueClob method copy.

@Override
public ValueLob copy(DataHandler database, int tableId) {
    if (lobData instanceof LobDataInMemory) {
        byte[] small = ((LobDataInMemory) lobData).getSmall();
        if (small.length > database.getMaxLengthInplaceLob()) {
            LobStorageInterface s = database.getLobStorage();
            ValueClob v = s.createClob(getReader(), charLength);
            ValueLob v2 = v.copy(database, tableId);
            v.remove();
            return v2;
        }
        return this;
    } else if (lobData instanceof LobDataDatabase) {
        return database.getLobStorage().copyLob(this, tableId);
    } else {
        throw new UnsupportedOperationException();
    }
}

Example 5 with LobDataDatabase

use of org.h2.value.lob.LobDataDatabase in project h2database by h2database.

the class ValueClob method compareTypeSafe.

@Override
public int compareTypeSafe(Value v, CompareMode mode, CastDataProvider provider) {
    if (v == this) {
        return 0;
    }
    ValueClob v2 = (ValueClob) v;
    LobData lobData = this.lobData, lobData2 = v2.lobData;
    if (lobData.getClass() == lobData2.getClass()) {
        if (lobData instanceof LobDataInMemory) {
            return Integer.signum(getString().compareTo(v2.getString()));
        } else if (lobData instanceof LobDataDatabase) {
            if (((LobDataDatabase) lobData).getLobId() == ((LobDataDatabase) lobData2).getLobId()) {
                return 0;
            }
        } else if (lobData instanceof LobDataFetchOnDemand) {
            if (((LobDataFetchOnDemand) lobData).getLobId() == ((LobDataFetchOnDemand) lobData2).getLobId()) {
                return 0;
            }
        }
    }
    return compare(this, v2);
}