/*
*
* * Copyright 2014 Orient Technologies LTD (info(at)orientechnologies.com)
* *
* * Licensed 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.
* *
* * For more information: http://www.orientechnologies.com
*
*/
package com.orientechnologies.orient.core.index;
import java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.ListIterator;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import com.orientechnologies.orient.core.command.OCommandRequest;
import com.orientechnologies.orient.core.db.record.OIdentifiable;
import com.orientechnologies.orient.core.id.ORID;
import com.orientechnologies.orient.core.metadata.schema.OType;
import com.orientechnologies.orient.core.record.impl.ODocument;
/**
* Proxied index.
*
* @author Luca Garulli
*
*/
@SuppressWarnings("unchecked")
public class OIndexRemoteMultiValue extends OIndexRemote<Collection<OIdentifiable>> {
protected final static String QUERY_GET = "select EXPAND( rid ) from index:%s where key = ?";
public OIndexRemoteMultiValue(final String iName, final String iWrappedType, final ORID iRid,
final OIndexDefinition iIndexDefinition, final ODocument iConfiguration, final Set<String> clustersToIndex) {
super(iName, iWrappedType, iRid, iIndexDefinition, iConfiguration, clustersToIndex);
}
public Collection<OIdentifiable> get(final Object iKey) {
final OCommandRequest cmd = formatCommand(QUERY_GET, name);
return new HashSet<OIdentifiable>((Collection<OIdentifiable>) getDatabase().command(cmd).execute(iKey));
}
public Iterator<Entry<Object, Collection<OIdentifiable>>> iterator() {
final OCommandRequest cmd = formatCommand(QUERY_ENTRIES, name);
final Collection<ODocument> result = getDatabase().command(cmd).execute();
final Map<Object, Collection<OIdentifiable>> map = new LinkedHashMap<Object, Collection<OIdentifiable>>();
for (final ODocument d : result) {
d.setLazyLoad(false);
Collection<OIdentifiable> rids = map.get(d.field("key"));
if (rids == null) {
rids = new HashSet<OIdentifiable>();
map.put(d.field("key"), rids);
}
rids.add((OIdentifiable) d.field("rid"));
}
return map.entrySet().iterator();
}
public Iterator<Entry<Object, Collection<OIdentifiable>>> inverseIterator() {
final OCommandRequest cmd = formatCommand(QUERY_ENTRIES, name);
final List<ODocument> result = getDatabase().command(cmd).execute();
final Map<Object, Collection<OIdentifiable>> map = new LinkedHashMap<Object, Collection<OIdentifiable>>();
for (ListIterator<ODocument> it = result.listIterator(); it.hasPrevious();) {
ODocument d = it.previous();
d.setLazyLoad(false);
Collection<OIdentifiable> rids = map.get(d.field("key"));
if (rids == null) {
rids = new HashSet<OIdentifiable>();
map.put(d.field("key"), rids);
}
rids.add((OIdentifiable) d.field("rid"));
}
return map.entrySet().iterator();
}
public Iterator<OIdentifiable> valuesIterator() {
throw new UnsupportedOperationException();
}
public Iterator<OIdentifiable> valuesInverseIterator() {
throw new UnsupportedOperationException();
}
@Override
public boolean supportsOrderedIterations() {
return false;
}
}