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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.facet;
import java.io.IOException;
import java.util.Arrays;
import org.apache.solr.schema.SchemaField;
public class UniqueBlockAgg extends UniqueAgg {
private static final class UniqueBlockSlotAcc extends UniqueSinglevaluedSlotAcc {
private int lastSeenValuesPerSlot[];
private UniqueBlockSlotAcc(FacetContext fcontext, SchemaField field, int numSlots)
throws IOException { //
super(fcontext, field, /*numSlots suppressing inherited accumulator */0, null);
counts = new int[numSlots];
lastSeenValuesPerSlot = new int[numSlots];
Arrays.fill(lastSeenValuesPerSlot, Integer.MIN_VALUE);
}
@Override
protected void collectOrdToSlot(int slotNum, int ord) {
if (lastSeenValuesPerSlot[slotNum]!=ord) {
counts[slotNum]+=1;
lastSeenValuesPerSlot[slotNum] = ord;
}
}
@Override
public void calcCounts() {
// noop already done
}
@Override
public void reset() throws IOException {
Arrays.fill(counts, 0);
Arrays.fill(lastSeenValuesPerSlot, Integer.MIN_VALUE);
}
@Override
public void resize(Resizer resizer) {
lastSeenValuesPerSlot = resizer.resize(lastSeenValuesPerSlot, Integer.MIN_VALUE);
super.resize(resizer);
}
@Override
public Object getValue(int slot) throws IOException {
return counts[slot];
}
}
private final static String uniqueBlock = "uniqueBlock";
public UniqueBlockAgg(String field) {
super(field);
name= uniqueBlock;
}
@Override
public SlotAcc createSlotAcc(FacetContext fcontext, int numDocs, int numSlots) throws IOException {
final String fieldName = getArg();
SchemaField sf = fcontext.qcontext.searcher().getSchema().getField(fieldName);
if (sf.multiValued() || sf.getType().multiValuedFieldCache()) {
throw new IllegalArgumentException(uniqueBlock+"("+fieldName+
") doesn't allow multivalue fields, got " + sf);
} else {
if (sf.getType().getNumberType() != null) {
throw new IllegalArgumentException(uniqueBlock+"("+fieldName+
") not yet support numbers " + sf);
} else {
return new UniqueBlockSlotAcc(fcontext, sf, numSlots);
}
}
}
@Override
public FacetMerger createFacetMerger(Object prototype) {
return new FacetLongMerger() ;
}
}