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OpenSearch subproject :modules:lang-expression
/*
* SPDX-License-Identifier: Apache-2.0
*
* The OpenSearch Contributors require contributions made to
* this file be licensed under the Apache-2.0 license or a
* compatible open source license.
*/
/*
* Licensed to Elasticsearch 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.
*/
/*
* Modifications Copyright OpenSearch Contributors. See
* GitHub history for details.
*/
package org.opensearch.script.expression;
import org.apache.lucene.index.LeafReaderContext;
import org.apache.lucene.search.DoubleValues;
import org.opensearch.index.fielddata.IndexFieldData;
import org.opensearch.index.fielddata.LeafNumericFieldData;
import org.opensearch.index.fielddata.NumericDoubleValues;
import org.opensearch.search.MultiValueMode;
import java.io.IOException;
import java.util.Calendar;
import java.util.Locale;
import java.util.Objects;
import java.util.TimeZone;
/** Extracts a portion of a date field with {@code Calendar.get()} */
class DateMethodValueSource extends FieldDataValueSource {
final String methodName;
final int calendarType;
DateMethodValueSource(IndexFieldData indexFieldData, MultiValueMode multiValueMode, String methodName, int calendarType) {
super(indexFieldData, multiValueMode);
Objects.requireNonNull(methodName);
this.methodName = methodName;
this.calendarType = calendarType;
}
@Override
public DoubleValues getValues(LeafReaderContext leaf, DoubleValues scores) {
LeafNumericFieldData leafData = (LeafNumericFieldData) fieldData.load(leaf);
final Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("UTC"), Locale.ROOT);
NumericDoubleValues docValues = multiValueMode.select(leafData.getDoubleValues());
return new DoubleValues() {
@Override
public double doubleValue() throws IOException {
calendar.setTimeInMillis((long) docValues.doubleValue());
return calendar.get(calendarType);
}
@Override
public boolean advanceExact(int doc) throws IOException {
return docValues.advanceExact(doc);
}
};
}
@Override
public String toString() {
return methodName + ": field(" + fieldData.getFieldName() + ")";
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
if (!super.equals(o)) return false;
DateMethodValueSource that = (DateMethodValueSource) o;
if (calendarType != that.calendarType) return false;
return methodName.equals(that.methodName);
}
@Override
public int hashCode() {
int result = super.hashCode();
result = 31 * result + methodName.hashCode();
result = 31 * result + calendarType;
return result;
}
}