// Copyright 2019 Schibsted Marketplaces Products & Technology As // // Licensed 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 com.schibsted.spt.data.jslt.impl; import java.util.Set; import java.util.HashSet; import com.fasterxml.jackson.databind.JsonNode; import com.fasterxml.jackson.databind.node.BooleanNode; /** * An optimized version of contains(a, b) which is used when b is an * array literal with a large number of values, so that a linear * search becomes a performance drag. */ public class OptimizedStaticContainsFunction extends AbstractFunction { private Set<JsonNode> values; public OptimizedStaticContainsFunction(JsonNode array) { super("optimized-static-contains", 2, 2); this.values = new HashSet(); for (int ix = 0; ix < array.size(); ix++) values.add(array.get(ix)); } public JsonNode call(JsonNode input, JsonNode[] arguments) { if (values.contains(arguments[0])) return BooleanNode.TRUE; else return BooleanNode.FALSE; } }