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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.schema.derived;
import com.yahoo.collections.Pair;
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
/**
* The rank settings of a field used for native rank features.
*
* @author geirst
*/
public class FieldRankSettings {
private final String fieldName;
private final Map<String, NativeTable> tables = new LinkedHashMap<>();
public FieldRankSettings(String fieldName) {
this.fieldName = fieldName;
}
public void addTable(NativeTable table) {
NativeTable existing = tables.get(table.getType().getName());
if (existing != null) {
// TODO: Throw?
return;
}
tables.put(table.getType().getName(), table);
}
public static boolean isIndexFieldTable(NativeTable table) {
return isFieldMatchTable(table) || isProximityTable(table);
}
public static boolean isAttributeFieldTable(NativeTable table) {
return isAttributeMatchTable(table);
}
private static boolean isFieldMatchTable(NativeTable table) {
return (table.getType().equals(NativeTable.Type.FIRST_OCCURRENCE) ||
table.getType().equals(NativeTable.Type.OCCURRENCE_COUNT));
}
private static boolean isAttributeMatchTable(NativeTable table) {
return (table.getType().equals(NativeTable.Type.WEIGHT));
}
private static boolean isProximityTable(NativeTable table) {
return (table.getType().equals(NativeTable.Type.PROXIMITY) ||
table.getType().equals(NativeTable.Type.REVERSE_PROXIMITY));
}
public List<Pair<String, String>> deriveRankProperties() {
List<Pair<String, String>> properties = new ArrayList<>();
for (NativeTable table : tables.values()) {
if (isFieldMatchTable(table))
properties.add(new Pair<>("nativeFieldMatch." + table.getType().getName() + "." + fieldName, table.getName()));
if (isAttributeMatchTable(table))
properties.add(new Pair<>("nativeAttributeMatch." + table.getType().getName() + "." + fieldName, table.getName()));
if (isProximityTable(table))
properties.add(new Pair<>("nativeProximity." + table.getType().getName() + "." + fieldName, table.getName()));
}
return properties;
}
@Override
public String toString() {
return "rank settings of field " + fieldName;
}
}
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