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// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.prelude.fastsearch;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.yahoo.vespa.config.search.SummaryConfig;
import com.yahoo.container.search.LegacyEmulationConfig;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* A docsum definition which knows how to decode a certain class of document
* summaries. The docsum definition has a name and a list of field definitions
*
* @author bratseth
* @author Bjørn Borud
*/
public class DocsumDefinition {
private String name;
private final List<DocsumField> fields;
/** True if this contains dynamic fields */
private boolean dynamic = false;
// Mapping between field names and their index in this.fields
private final Map<String,Integer> fieldNameToIndex;
DocsumDefinition(DocumentdbInfoConfig.Documentdb.Summaryclass config, LegacyEmulationConfig emulConfig) {
this.name = config.name();
List<DocsumField> fieldsBuilder = new ArrayList<>();
Map<String,Integer> fieldNameToIndexBuilder = new HashMap<>();
for (DocumentdbInfoConfig.Documentdb.Summaryclass.Fields field : config.fields()) {
// no, don't switch the order of the two next lines :)
fieldNameToIndexBuilder.put(field.name(), fieldsBuilder.size());
fieldsBuilder.add(DocsumField.create(field.name(), field.type(), emulConfig));
if (field.dynamic())
dynamic = true;
}
fields = ImmutableList.copyOf(fieldsBuilder);
fieldNameToIndex = ImmutableMap.copyOf(fieldNameToIndexBuilder);
}
/** Returns the field at this index, or null if none */
public DocsumField getField(int fieldIndex) {
if (fieldIndex >= fields.size()) return null;
return fields.get(fieldIndex);
}
/** Returns the index of a field name */
public Integer getFieldIndex(String fieldName) {
return fieldNameToIndex.get(fieldName);
}
@Override
public String toString() {
return "docsum definition '" + getName() + "'";
}
public String getName() {
return name;
}
public int getFieldCount() {
return fields.size();
}
public List<DocsumField> getFields() {
return fields;
}
/** Returns whether this summary contains one or more dynamic fields */
public boolean isDynamic() {
return dynamic;
}
}
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