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/**
* AbstractMapStore
* Copyright 2011 by Michael Peter Christen, mc@yacy.net, Frankfurt am Main, Germany
* First released 16.12.2011 at http://yacy.net
*
* $LastChangedDate: 2011-04-14 00:04:23 +0200 (Do, 14 Apr 2011) $
* $LastChangedRevision: 7653 $
* $LastChangedBy: orbiter $
*
* This library 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 2.1 of the License, or (at your option) any later version.
*
* This library 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 in the file lgpl21.txt
* If not, see <http://www.gnu.org/licenses/>.
*/
package net.yacy.cora.storage;
import java.util.AbstractMap;
import java.util.Collection;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import net.yacy.cora.document.encoding.UTF8;
public abstract class AbstractMapStore implements MapStore {
@Override
public boolean containsValue(Object arg0) {
throw new UnsupportedOperationException("ContainsValue() not appropriate, use outer indexing");
}
@Override
public Set<java.util.Map.Entry<byte[], Map<String, byte[]>>> entrySet() {
throw new UnsupportedOperationException("entrySet() not appropriate, use an iterator");
}
@Override
public Set<byte[]> keySet() {
throw new UnsupportedOperationException("keySet() not appropriate, use an iterator");
}
@Override
public void putAll(Map<? extends byte[], ? extends Map<String, byte[]>> entries) {
if (entries instanceof MapStore) {
Iterator<Map.Entry<byte[], Map<String, byte[]>>> i = ((MapStore) entries).iterator();
Map.Entry<? extends byte[], ? extends Map<String, byte[]>> entry;
while (i.hasNext()) {
entry = i.next();
this.put(entry.getKey(), entry.getValue());
}
} else {
for (Map.Entry<? extends byte[], ? extends Map<String, byte[]>> e: entries.entrySet()) {
this.put(e.getKey(), e.getValue());
}
}
}
@Override
public Collection<Map<String, byte[]>> values() {
throw new UnsupportedOperationException("values() not appropriate, use an iterator");
}
@Override
public Iterator<Map.Entry<byte[], Map<String, byte[]>>> iterator() {
final Iterator<byte[]> k = this.keyIterator();
return new Iterator<Map.Entry<byte[], Map<String, byte[]>>>(){
@Override
public boolean hasNext() {
return k.hasNext();
}
@Override
public Map.Entry<byte[], Map<String, byte[]>> next() {
byte[] key = k.next();
if (key == null) return null;
return new AbstractMap.SimpleImmutableEntry<byte[], Map<String, byte[]>>(key, AbstractMapStore.this.get(key));
}
@Override
public void remove() {
k.remove();
}
};
}
public static String map2String(Map<String, byte[]> map) {
StringBuilder sb = new StringBuilder(map.size() * 50);
sb.append("<map>\n");
for (Map.Entry<String, byte[]> entry: map.entrySet()) {
sb.append('<').append(entry.getKey()).append('>');
sb.append(UTF8.String(entry.getValue()));
sb.append("</").append(entry.getKey()).append(">\n");
}
sb.append("</map>\n");
return sb.toString();
}
}
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