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/*
* 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.index.fielddata.plain;
import org.apache.lucene.index.LeafReaderContext;
import org.elasticsearch.index.IndexSettings;
import org.elasticsearch.index.fielddata.AtomicFieldData;
import org.elasticsearch.index.fielddata.FieldDataType;
import org.elasticsearch.index.fielddata.IndexFieldData;
import org.elasticsearch.index.fielddata.IndexFieldData.XFieldComparatorSource.Nested;
import org.elasticsearch.index.fielddata.IndexFieldDataCache;
import org.elasticsearch.index.mapper.MappedFieldType;
import org.elasticsearch.index.mapper.MappedFieldType.Names;
import org.elasticsearch.index.mapper.MapperService;
import org.elasticsearch.indices.breaker.CircuitBreakerService;
import org.elasticsearch.search.MultiValueMode;
/**
* A field data implementation that forbids loading and will throw an {@link IllegalStateException} if you try to load
* {@link AtomicFieldData} instances.
*/
public final class DisabledIndexFieldData extends AbstractIndexFieldData<AtomicFieldData> {
public static class Builder implements IndexFieldData.Builder {
@Override
public IndexFieldData<AtomicFieldData> build(IndexSettings indexSettings, MappedFieldType fieldType,
IndexFieldDataCache cache, CircuitBreakerService breakerService, MapperService mapperService) {
// Ignore Circuit Breaker
return new DisabledIndexFieldData(indexSettings, fieldType.names(), fieldType.fieldDataType(), cache);
}
}
public DisabledIndexFieldData(IndexSettings indexSettings, Names fieldNames, FieldDataType fieldDataType, IndexFieldDataCache cache) {
super(indexSettings, fieldNames, fieldDataType, cache);
}
@Override
public AtomicFieldData loadDirect(LeafReaderContext context) throws Exception {
throw fail();
}
@Override
protected AtomicFieldData empty(int maxDoc) {
throw fail();
}
@Override
public IndexFieldData.XFieldComparatorSource comparatorSource(Object missingValue, MultiValueMode sortMode, Nested nested) {
throw fail();
}
private IllegalStateException fail() {
return new IllegalStateException("Field data loading is forbidden on " + getFieldNames().fullName());
}
}
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