| /* |
| * 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.igfs.meta; |
| |
| import java.io.Externalizable; |
| import java.io.IOException; |
| import java.io.ObjectInput; |
| import java.io.ObjectOutput; |
| import java.util.HashMap; |
| import java.util.Map; |
| import javax.cache.processor.EntryProcessor; |
| import javax.cache.processor.EntryProcessorException; |
| import javax.cache.processor.MutableEntry; |
| import org.apache.ignite.IgniteException; |
| import org.apache.ignite.binary.BinaryObjectException; |
| import org.apache.ignite.binary.BinaryRawReader; |
| import org.apache.ignite.binary.BinaryRawWriter; |
| import org.apache.ignite.binary.BinaryReader; |
| import org.apache.ignite.binary.BinaryWriter; |
| import org.apache.ignite.binary.Binarylizable; |
| import org.apache.ignite.internal.processors.igfs.IgfsEntryInfo; |
| import org.apache.ignite.internal.processors.igfs.IgfsListingEntry; |
| import org.apache.ignite.internal.util.typedef.internal.S; |
| import org.apache.ignite.internal.util.typedef.internal.U; |
| import org.apache.ignite.lang.IgniteUuid; |
| |
| /** |
| * Processor to rename a single entry in a directory listing. |
| */ |
| public class IgfsMetaDirectoryListingRenameProcessor implements EntryProcessor<IgniteUuid, IgfsEntryInfo, Void>, |
| Externalizable, Binarylizable { |
| /** */ |
| private static final long serialVersionUID = 0L; |
| |
| /** Old name. */ |
| private String oldName; |
| |
| /** New name. */ |
| private String newName; |
| |
| /** |
| * Constructor. |
| */ |
| public IgfsMetaDirectoryListingRenameProcessor() { |
| // No-op. |
| } |
| |
| /** |
| * Constructor. |
| * |
| * @param oldName Old name. |
| * @param newName New name. |
| */ |
| public IgfsMetaDirectoryListingRenameProcessor(String oldName, String newName) { |
| this.oldName = oldName; |
| this.newName = newName; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public Void process(MutableEntry<IgniteUuid, IgfsEntryInfo> e, Object... args) |
| throws EntryProcessorException { |
| IgfsEntryInfo fileInfo = e.getValue(); |
| |
| assert fileInfo.isDirectory(); |
| |
| Map<String, IgfsListingEntry> listing = new HashMap<>(fileInfo.listing()); |
| |
| // Modify listing in-place. |
| IgfsListingEntry entry = listing.remove(oldName); |
| |
| if (entry == null) |
| throw new IgniteException("Directory listing doesn't contain expected entry: " + oldName); |
| |
| IgfsListingEntry replacedEntry = listing.put(newName, entry); |
| |
| if (replacedEntry != null) |
| throw new IgniteException("Entry with new name already exists [name=" + newName + |
| ", entry=" + replacedEntry + ']'); |
| |
| e.setValue(fileInfo.listing(listing)); |
| |
| return null; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void writeExternal(ObjectOutput out) throws IOException { |
| U.writeString(out, oldName); |
| U.writeString(out, newName); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException { |
| oldName = U.readString(in); |
| newName = U.readString(in); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void writeBinary(BinaryWriter writer) throws BinaryObjectException { |
| BinaryRawWriter out = writer.rawWriter(); |
| |
| out.writeString(oldName); |
| out.writeString(newName); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void readBinary(BinaryReader reader) throws BinaryObjectException { |
| BinaryRawReader in = reader.rawReader(); |
| |
| oldName = in.readString(); |
| newName = in.readString(); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public String toString() { |
| return S.toString(IgfsMetaDirectoryListingRenameProcessor.class, this); |
| } |
| } |