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Apache Solr (module: core)
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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.apache.solr.search;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.QueryVisitor;
import org.apache.solr.handler.component.MergeStrategy;
import org.apache.solr.handler.component.ResponseBuilder;
import org.apache.solr.request.SolrRequestInfo;
/**
* Note: This API is experimental and may change in non backward-compatible ways in the
* future
*/
public abstract class AnalyticsQuery extends ExtendedQueryBase implements PostFilter {
@Override
public boolean getCache() {
return false;
}
@Override
public int getCost() {
return Math.max(super.getCost(), 100);
}
@Override
public boolean equals(Object o) {
return this == o;
}
@Override
public int hashCode() {
return System.identityHashCode(this);
}
/** Use this constructor for single node analytics. */
public AnalyticsQuery() {}
/**
* Use this constructor for distributed analytics.
*
* @param mergeStrategy defines the distributed merge strategy for this AnalyticsQuery
*/
public AnalyticsQuery(MergeStrategy mergeStrategy) {
SolrRequestInfo info = SolrRequestInfo.getRequestInfo();
ResponseBuilder rb = info.getResponseBuilder();
rb.addMergeStrategy(mergeStrategy);
}
@Override
public DelegatingCollector getFilterCollector(IndexSearcher searcher) {
SolrRequestInfo info = SolrRequestInfo.getRequestInfo();
ResponseBuilder rb = null;
if (info != null) {
rb = info.getResponseBuilder();
}
if (rb == null) {
// This is the autowarming case.
return new DelegatingCollector();
} else {
return getAnalyticsCollector(rb, searcher);
}
}
public abstract DelegatingCollector getAnalyticsCollector(
ResponseBuilder rb, IndexSearcher searcher);
@Override
public void visit(QueryVisitor visitor) {
visitor.visitLeaf(this);
}
}