/**
* Copyright (C) cedarsoft GmbH.
*
* Licensed under the GNU General Public License version 3 (the "License")
* with Classpath Exception; you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.cedarsoft.org/gpl3ce
* (GPL 3 with Classpath Exception)
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 3 only, as
* published by the Free Software Foundation. cedarsoft GmbH designates this
* particular file as subject to the "Classpath" exception as provided
* by cedarsoft GmbH in the LICENSE file that accompanied this code.
*
* This code 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 General Public License
* version 3 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 3 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact cedarsoft GmbH, 72810 Gomaringen, Germany,
* or visit www.cedarsoft.com if you need additional information or
* have any questions.
*/
package com.cedarsoft.serialization.serializers.registry;
import com.cedarsoft.exceptions.StillContainedException;
import com.cedarsoft.serialization.NotFoundException;
import javax.annotation.Nonnull;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
/**
*
*/
public class InMemoryObjectsAccess implements StreamBasedObjectsAccess {
@Nonnull
private final Map<String, byte[]> serialized = new HashMap<String, byte[]>();
@Override
@Nonnull
public InputStream getInputStream(@Nonnull String id) {
byte[] found = serialized.get(id);
if (found == null) {
throw new IllegalArgumentException("No stored data found for <" + id + ">");
}
return new ByteArrayInputStream(found);
}
@Nonnull
@Override
public Set<? extends String> getIds() throws IOException {
return serialized.keySet();
}
@Override
@Nonnull
public OutputStream openOut(@Nonnull final String id) {
byte[] stored = serialized.get(id);
if (stored != null) {
throw new StillContainedException(id);
}
return new ByteArrayOutputStream() {
@Override
public void close() throws IOException {
super.close();
serialized.put(id, toByteArray());
}
};
}
@Override
public OutputStream openOutForUpdate(@Nonnull final String id) throws NotFoundException, FileNotFoundException {
byte[] stored = serialized.get(id);
if (stored == null) {
throw new NotFoundException(id);
}
return new ByteArrayOutputStream() {
@Override
public void close() throws IOException {
super.close();
serialized.put(id, toByteArray());
}
};
}
@Override
public void delete(@Nonnull String id) throws NotFoundException {
byte[] bytes = serialized.remove(id);
if (bytes == null) {
throw new NotFoundException("id");
}
}
public void clear() {
serialized.clear();
}
}