/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.search.lookup;
import com.google.common.collect.Maps;
import org.elasticsearch.common.Nullable;
import org.elasticsearch.index.fielddata.IndexFieldDataService;
import org.elasticsearch.index.fielddata.ScriptDocValues;
import org.elasticsearch.index.mapper.FieldMapper;
import org.elasticsearch.index.mapper.MappedFieldType;
import org.elasticsearch.index.mapper.MapperService;
import org.apache.lucene.index.LeafReaderContext;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.Arrays;
import java.util.Collection;
import java.util.Map;
import java.util.Set;
/**
*
*/
public class LeafDocLookup implements Map {
private final Map<String, ScriptDocValues> localCacheFieldData = Maps.newHashMapWithExpectedSize(4);
private final MapperService mapperService;
private final IndexFieldDataService fieldDataService;
@Nullable
private final String[] types;
private final LeafReaderContext reader;
private int docId = -1;
LeafDocLookup(MapperService mapperService, IndexFieldDataService fieldDataService, @Nullable String[] types, LeafReaderContext reader) {
this.mapperService = mapperService;
this.fieldDataService = fieldDataService;
this.types = types;
this.reader = reader;
}
public MapperService mapperService() {
return this.mapperService;
}
public IndexFieldDataService fieldDataService() {
return this.fieldDataService;
}
public void setDocument(int docId) {
this.docId = docId;
}
@Override
public Object get(Object key) {
// assume its a string...
String fieldName = key.toString();
ScriptDocValues scriptValues = localCacheFieldData.get(fieldName);
if (scriptValues == null) {
final MappedFieldType fieldType = mapperService.smartNameFieldType(fieldName, types);
if (fieldType == null) {
throw new IllegalArgumentException("No field found for [" + fieldName + "] in mapping with types " + Arrays.toString(types) + "");
}
// load fielddata on behalf of the script: otherwise it would need additional permissions
// to deal with pagedbytes/ramusagestimator/etc
scriptValues = AccessController.doPrivileged(new PrivilegedAction<ScriptDocValues>() {
@Override
public ScriptDocValues run() {
return fieldDataService.getForField(fieldType).load(reader).getScriptValues();
}
});
localCacheFieldData.put(fieldName, scriptValues);
}
scriptValues.setNextDocId(docId);
return scriptValues;
}
@Override
public boolean containsKey(Object key) {
// assume its a string...
String fieldName = key.toString();
ScriptDocValues scriptValues = localCacheFieldData.get(fieldName);
if (scriptValues == null) {
MappedFieldType fieldType = mapperService.smartNameFieldType(fieldName, types);
if (fieldType == null) {
return false;
}
}
return true;
}
@Override
public int size() {
throw new UnsupportedOperationException();
}
@Override
public boolean isEmpty() {
throw new UnsupportedOperationException();
}
@Override
public boolean containsValue(Object value) {
throw new UnsupportedOperationException();
}
@Override
public Object put(Object key, Object value) {
throw new UnsupportedOperationException();
}
@Override
public Object remove(Object key) {
throw new UnsupportedOperationException();
}
@Override
public void putAll(Map m) {
throw new UnsupportedOperationException();
}
@Override
public void clear() {
throw new UnsupportedOperationException();
}
@Override
public Set keySet() {
throw new UnsupportedOperationException();
}
@Override
public Collection values() {
throw new UnsupportedOperationException();
}
@Override
public Set entrySet() {
throw new UnsupportedOperationException();
}
}