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https://github.com/honeymoose/OpenSearch.git
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aa968f6b65
Added infrastructure to allow basic member methods in the expressions language to be called. The methods must have a signature with no arguments. Also added the following member methods for date fields (and it should be easy to add more) * getYear * getMonth * getDayOfMonth * getHourOfDay * getMinutes * getSeconds Allow fields to be accessed without using the member variable [value]. (Note that both ways can be used to access fields for back-compat.) closes #10890
73 lines
2.3 KiB
Java
73 lines
2.3 KiB
Java
/*
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* Licensed to Elasticsearch under one or more contributor
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* license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright
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* ownership. Elasticsearch licenses this file to you under
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* the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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package org.elasticsearch.script.expression;
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import org.apache.lucene.index.LeafReaderContext;
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import org.apache.lucene.queries.function.FunctionValues;
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import org.apache.lucene.queries.function.ValueSource;
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import org.elasticsearch.index.fielddata.AtomicFieldData;
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import org.elasticsearch.index.fielddata.AtomicNumericFieldData;
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import org.elasticsearch.index.fielddata.IndexFieldData;
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import java.io.IOException;
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import java.util.Map;
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import java.util.Objects;
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/**
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* A {@link ValueSource} wrapper for field data.
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*/
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class FieldDataValueSource extends ValueSource {
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protected IndexFieldData<?> fieldData;
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protected FieldDataValueSource(IndexFieldData<?> d) {
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Objects.requireNonNull(d);
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fieldData = d;
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}
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@Override
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public FunctionValues getValues(Map context, LeafReaderContext leaf) throws IOException {
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AtomicFieldData leafData = fieldData.load(leaf);
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assert(leafData instanceof AtomicNumericFieldData);
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return new FieldDataFunctionValues(this, (AtomicNumericFieldData)leafData);
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}
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@Override
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public boolean equals(Object o) {
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if (this == o) return true;
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if (o == null || getClass() != o.getClass()) return false;
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FieldDataValueSource that = (FieldDataValueSource) o;
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return fieldData.equals(that.fieldData);
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}
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@Override
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public int hashCode() {
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return fieldData.hashCode();
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}
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@Override
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public String description() {
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return "field(" + fieldData.getFieldNames().toString() + ")";
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}
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}
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