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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;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Optional;
import com.yahoo.schema.document.FieldSet;
/**
* The field sets owned by a {@link Schema}
* Both built in and user defined.
*
* @author vegardh
*/
public class FieldSets {
private final Optional<Schema> owner;
private final Map<String, FieldSet> userFieldSets;
private final Map<String, FieldSet> builtInFieldSets;
public FieldSets(Optional<Schema> owner) {
this.owner = owner;
userFieldSets = new LinkedHashMap<>();
builtInFieldSets = new LinkedHashMap<>();
}
/**
* Adds an entry to user field sets, creating entries as needed
*
* @param setName name of a field set
* @param field field to add to field set
*/
public void addUserFieldSetItem(String setName, String field) {
if (userFieldSets.get(setName) == null) {
// First entry in this set
userFieldSets.put(setName, new FieldSet(setName));
}
userFieldSets.get(setName).addFieldName(field);
}
/**
* Adds an entry to built in field sets, creating entries as needed
*
* @param setName name of a field set
* @param field field to add to field set
*/
public void addBuiltInFieldSetItem(String setName, String field) {
if (builtInFieldSets.get(setName) == null) {
// First entry in this set
builtInFieldSets.put(setName, new FieldSet(setName));
}
builtInFieldSets.get(setName).addFieldName(field);
}
/** Returns the built in field sets, unmodifiable */
public Map<String, FieldSet> builtInFieldSets() {
if (owner.isEmpty() || owner.get().inherited().isEmpty()) return Collections.unmodifiableMap(builtInFieldSets);
if (builtInFieldSets.isEmpty()) return owner.get().inherited().get().fieldSets().builtInFieldSets();
var fieldSets = new LinkedHashMap<>(owner.get().inherited().get().fieldSets().builtInFieldSets());
fieldSets.putAll(builtInFieldSets);
return Collections.unmodifiableMap(fieldSets);
}
/** Returns the user defined field sets, unmodifiable */
public Map<String, FieldSet> userFieldSets() {
if (owner.isEmpty() || owner.get().inherited().isEmpty()) return Collections.unmodifiableMap(userFieldSets);
if (userFieldSets.isEmpty()) return owner.get().inherited().get().fieldSets().userFieldSets();
var fieldSets = new LinkedHashMap<>(owner.get().inherited().get().fieldSets().userFieldSets());
fieldSets.putAll(userFieldSets);
return Collections.unmodifiableMap(fieldSets);
}
}
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