org.elasticsearch.index.fielddata.GeoPointValues Maven / Gradle / Ivy
/*
* Licensed to ElasticSearch and Shay Banon under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. ElasticSearch 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.elasticsearch.index.fielddata;
import org.elasticsearch.ElasticSearchIllegalStateException;
import org.elasticsearch.common.geo.GeoPoint;
/**
*/
public interface GeoPointValues {
static final GeoPointValues EMPTY = new Empty();
/**
* Is one of the documents in this field data values is multi valued?
*/
boolean isMultiValued();
/**
* Is there a value for this doc?
*/
boolean hasValue(int docId);
GeoPoint getValue(int docId);
GeoPoint getValueSafe(int docId);
Iter getIter(int docId);
Iter getIterSafe(int docId);
static interface Iter {
boolean hasNext();
GeoPoint next();
static class Empty implements Iter {
public static final Empty INSTANCE = new Empty();
@Override
public boolean hasNext() {
return false;
}
@Override
public GeoPoint next() {
throw new ElasticSearchIllegalStateException();
}
}
static class Single implements Iter {
public GeoPoint value;
public boolean done;
public Single reset(GeoPoint value) {
this.value = value;
this.done = false;
return this;
}
@Override
public boolean hasNext() {
return !done;
}
@Override
public GeoPoint next() {
assert !done;
done = true;
return value;
}
}
}
static class Empty implements GeoPointValues {
@Override
public boolean isMultiValued() {
return false;
}
@Override
public boolean hasValue(int docId) {
return false;
}
@Override
public GeoPoint getValueSafe(int docId) {
return getValue(docId);
}
@Override
public Iter getIterSafe(int docId) {
return getIter(docId);
}
@Override
public GeoPoint getValue(int docId) {
return null;
}
@Override
public Iter getIter(int docId) {
return Iter.Empty.INSTANCE;
}
}
}