| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.ignite.internal.processors.cache.transactions; |
| |
| import java.nio.ByteBuffer; |
| import org.apache.ignite.IgniteCheckedException; |
| import org.apache.ignite.internal.GridDirectTransient; |
| import org.apache.ignite.internal.IgniteCodeGeneratingFail; |
| import org.apache.ignite.internal.processors.cache.CacheObject; |
| import org.apache.ignite.internal.processors.cache.CacheObjectValueContext; |
| import org.apache.ignite.internal.processors.cache.GridCacheContext; |
| import org.apache.ignite.internal.processors.cache.GridCacheOperation; |
| import org.apache.ignite.internal.util.tostring.GridToStringExclude; |
| import org.apache.ignite.internal.util.tostring.GridToStringInclude; |
| import org.apache.ignite.internal.util.typedef.internal.S; |
| import org.apache.ignite.plugin.extensions.communication.Message; |
| import org.apache.ignite.plugin.extensions.communication.MessageReader; |
| import org.apache.ignite.plugin.extensions.communication.MessageWriter; |
| import org.jetbrains.annotations.Nullable; |
| |
| import static org.apache.ignite.internal.processors.cache.GridCacheOperation.CREATE; |
| import static org.apache.ignite.internal.processors.cache.GridCacheOperation.DELETE; |
| import static org.apache.ignite.internal.processors.cache.GridCacheOperation.NOOP; |
| import static org.apache.ignite.internal.processors.cache.GridCacheOperation.READ; |
| import static org.apache.ignite.internal.processors.cache.GridCacheOperation.UPDATE; |
| |
| /** |
| * Auxiliary class to hold value, value-has-been-set flag, value update operation, value bytes. |
| */ |
| @IgniteCodeGeneratingFail // Need to handle 'hasWriteVal' flag during write. |
| public class TxEntryValueHolder implements Message { |
| /** */ |
| private static final long serialVersionUID = 0L; |
| |
| /** */ |
| @GridToStringInclude(sensitive = true) |
| private CacheObject val; |
| |
| /** */ |
| @GridToStringInclude |
| private GridCacheOperation op = NOOP; |
| |
| /** Flag indicating that value has been set for write. */ |
| @GridToStringExclude |
| private boolean hasWriteVal; |
| |
| /** Flag indicating that value has been set for read. */ |
| @GridToStringExclude |
| @GridDirectTransient |
| private boolean hasReadVal; |
| |
| /** |
| * @param op Cache operation. |
| * @param val Value. |
| * @param hasWriteVal Write value presence flag. |
| * @param hasReadVal Read value presence flag. |
| */ |
| public void value(GridCacheOperation op, CacheObject val, boolean hasWriteVal, boolean hasReadVal) { |
| if (hasReadVal && this.hasWriteVal) |
| return; |
| |
| this.op = op; |
| this.val = val; |
| |
| this.hasWriteVal = hasWriteVal || op == CREATE || op == UPDATE || op == DELETE; |
| this.hasReadVal = hasReadVal || op == READ; |
| } |
| |
| /** |
| * @return {@code True} if has read or write value. |
| */ |
| public boolean hasValue() { |
| return hasWriteVal || hasReadVal; |
| } |
| |
| /** |
| * Gets stored value. |
| * |
| * @return Value. |
| */ |
| public CacheObject value() { |
| return val; |
| } |
| |
| /** |
| * @param val Stored value. |
| */ |
| public void value(@Nullable CacheObject val) { |
| this.val = val; |
| } |
| |
| /** |
| * Gets cache operation. |
| * |
| * @return Cache operation. |
| */ |
| public GridCacheOperation op() { |
| return op; |
| } |
| |
| /** |
| * Sets cache operation. |
| * |
| * @param op Cache operation. |
| */ |
| public void op(GridCacheOperation op) { |
| this.op = op; |
| } |
| |
| /** |
| * @return {@code True} if write value was set. |
| */ |
| public boolean hasWriteValue() { |
| return hasWriteVal; |
| } |
| |
| /** |
| * @return {@code True} if read value was set. |
| */ |
| public boolean hasReadValue() { |
| return hasReadVal; |
| } |
| |
| /** |
| * @param ctx Cache context. |
| * @throws org.apache.ignite.IgniteCheckedException If marshaling failed. |
| */ |
| public void marshal(GridCacheContext<?, ?> ctx) |
| throws IgniteCheckedException { |
| if (hasWriteVal && val != null) |
| val.prepareMarshal(ctx.cacheObjectContext()); |
| } |
| |
| /** |
| * @param ctx Cache context. |
| * @param ldr Class loader. |
| * @throws org.apache.ignite.IgniteCheckedException If unmarshalling failed. |
| */ |
| public void unmarshal(CacheObjectValueContext ctx, ClassLoader ldr) throws IgniteCheckedException { |
| if (hasWriteVal && val != null) |
| val.finishUnmarshal(ctx, ldr); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void onAckReceived() { |
| // No-op. |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public String toString() { |
| return S.toString(TxEntryValueHolder.class, this); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public boolean writeTo(ByteBuffer buf, MessageWriter writer) { |
| writer.setBuffer(buf); |
| |
| if (!writer.isHeaderWritten()) { |
| if (!writer.writeHeader(directType(), fieldsCount())) |
| return false; |
| |
| writer.onHeaderWritten(); |
| } |
| |
| switch (writer.state()) { |
| case 0: |
| if (!writer.writeBoolean("hasWriteVal", hasWriteVal)) |
| return false; |
| |
| writer.incrementState(); |
| |
| case 1: |
| if (!writer.writeByte("op", op != null ? (byte)op.ordinal() : -1)) |
| return false; |
| |
| writer.incrementState(); |
| |
| case 2: |
| if (!writer.writeMessage("val", hasWriteVal ? val : null)) |
| return false; |
| |
| writer.incrementState(); |
| |
| } |
| |
| return true; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public boolean readFrom(ByteBuffer buf, MessageReader reader) { |
| reader.setBuffer(buf); |
| |
| if (!reader.beforeMessageRead()) |
| return false; |
| |
| switch (reader.state()) { |
| case 0: |
| hasWriteVal = reader.readBoolean("hasWriteVal"); |
| |
| if (!reader.isLastRead()) |
| return false; |
| |
| reader.incrementState(); |
| |
| case 1: |
| byte opOrd; |
| |
| opOrd = reader.readByte("op"); |
| |
| if (!reader.isLastRead()) |
| return false; |
| |
| op = GridCacheOperation.fromOrdinal(opOrd); |
| |
| reader.incrementState(); |
| |
| case 2: |
| val = reader.readMessage("val"); |
| |
| if (!reader.isLastRead()) |
| return false; |
| |
| reader.incrementState(); |
| |
| } |
| |
| return reader.afterMessageRead(TxEntryValueHolder.class); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public short directType() { |
| return 101; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public byte fieldsCount() { |
| return 3; |
| } |
| } |