org.apache.solr.common.params.DefaultSolrParams Maven / Gradle / Ivy
/*
* 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.common.params;
import java.util.Iterator;
import java.util.LinkedHashSet;
/**
*
*/
public class DefaultSolrParams extends SolrParams {
protected final SolrParams params;
protected final SolrParams defaults;
protected DefaultSolrParams(SolrParams params, SolrParams defaults) {
assert params != null && defaults != null;
this.params = params;
this.defaults = defaults;
}
@Override
public String get(String param) {
String val = params.get(param);
return val!=null ? val : defaults.get(param);
}
@Override
public String[] getParams(String param) {
String[] vals = params.getParams(param);
return vals!=null ? vals : defaults.getParams(param);
}
@Override
public Iterator getParameterNamesIterator() {
// We need to compute the set of all param names in advance
// So we don't wind up with an iterator that returns the same
// String more then once (SOLR-6780)
LinkedHashSet allKeys = new LinkedHashSet<>();
for (SolrParams p : new SolrParams [] {params, defaults}) {
Iterator localKeys = p.getParameterNamesIterator();
while (localKeys.hasNext()) {
allKeys.add(localKeys.next());
}
}
return allKeys.iterator();
}
@Override
public String toString() {
return "{params("+params+"),defaults("+defaults+")}";
}
}