/* * Copyright (C) 2012, 2016 higherfrequencytrading.com * Copyright (C) 2016 Roman Leventov * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation, either version 3 of the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package net.openhft.chronicle.hash.serialization.impl; import net.openhft.chronicle.bytes.Bytes; import net.openhft.chronicle.hash.serialization.BytesReader; import net.openhft.chronicle.hash.serialization.ListMarshaller; import net.openhft.chronicle.hash.serialization.SetMarshaller; import net.openhft.chronicle.hash.serialization.StatefulCopyable; import net.openhft.chronicle.wire.WireIn; import net.openhft.chronicle.wire.WireOut; import org.jetbrains.annotations.NotNull; import org.jetbrains.annotations.Nullable; /** * {@link BytesReader} implementation for String, for the primary ChronicleMap's key or value type * {@link StringSizedReader} + {@link StringUtf8DataAccess} are more efficient (because don't * store the size twice), so this reader is useful in conjunction with {@link ListMarshaller} or * {@link SetMarshaller}. * * @see CharSequenceBytesWriter */ public class StringBytesReader implements BytesReader<String>, StatefulCopyable<StringBytesReader> { /** Cache field */ private transient StringBuilder sb; public StringBytesReader() { initTransients(); } private void initTransients() { sb = new StringBuilder(); } @NotNull @Override public String read(Bytes in, @Nullable String using) { if (in.readUtf8(sb)) { return sb.toString(); } else { throw new NullPointerException("BytesReader couldn't read null"); } } @Override public StringBytesReader copy() { return new StringBytesReader(); } @Override public void readMarshallable(@NotNull WireIn wireIn) { // no fields to read initTransients(); } @Override public void writeMarshallable(@NotNull WireOut wireOut) { // no fields to write } }