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/*
 * 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.
 */

package org.elasticsearch.index.query.functionscore;

import org.elasticsearch.index.query.functionscore.exp.ExponentialDecayFunctionBuilder;
import org.elasticsearch.index.query.functionscore.factor.FactorBuilder;
import org.elasticsearch.index.query.functionscore.fieldvaluefactor.FieldValueFactorFunctionBuilder;
import org.elasticsearch.index.query.functionscore.gauss.GaussDecayFunctionBuilder;
import org.elasticsearch.index.query.functionscore.lin.LinearDecayFunctionBuilder;
import org.elasticsearch.index.query.functionscore.random.RandomScoreFunctionBuilder;
import org.elasticsearch.index.query.functionscore.script.ScriptScoreFunctionBuilder;
import org.elasticsearch.index.query.functionscore.weight.WeightBuilder;

import java.util.Map;

public class ScoreFunctionBuilders {
   
    public static ExponentialDecayFunctionBuilder exponentialDecayFunction(String fieldName, Object origin, Object scale) {
        return new ExponentialDecayFunctionBuilder(fieldName, origin, scale);
    }
    
    public static ExponentialDecayFunctionBuilder exponentialDecayFunction(String fieldName, Object scale) {
        return new ExponentialDecayFunctionBuilder(fieldName, null, scale);
    }
    
    public static GaussDecayFunctionBuilder gaussDecayFunction(String fieldName, Object origin, Object scale) {
        return new GaussDecayFunctionBuilder(fieldName, origin, scale);
    }
    
    public static GaussDecayFunctionBuilder gaussDecayFunction(String fieldName, Object scale) {
        return new GaussDecayFunctionBuilder(fieldName, null, scale);
    }
    
    public static LinearDecayFunctionBuilder linearDecayFunction(String fieldName, Object origin, Object scale) {
        return new LinearDecayFunctionBuilder(fieldName, origin, scale);
    }
    
    public static LinearDecayFunctionBuilder linearDecayFunction(String fieldName, Object scale) {
        return new LinearDecayFunctionBuilder(fieldName, null, scale);
    }

    public static ScriptScoreFunctionBuilder scriptFunction(String script) {
        return (new ScriptScoreFunctionBuilder()).script(script);
    }

    public static ScriptScoreFunctionBuilder scriptFunction(String script, String lang) {
        return (new ScriptScoreFunctionBuilder()).script(script).lang(lang);
    }

    public static ScriptScoreFunctionBuilder scriptFunction(String script, String lang, Map params) {
        return (new ScriptScoreFunctionBuilder()).script(script).lang(lang).params(params);
    }

    public static ScriptScoreFunctionBuilder scriptFunction(String script, Map params) {
        return (new ScriptScoreFunctionBuilder()).script(script).params(params);
    }

    @Deprecated
    public static FactorBuilder factorFunction(float boost) {
        return (new FactorBuilder()).boostFactor(boost);
    }

    public static RandomScoreFunctionBuilder randomFunction(int seed) {
        return (new RandomScoreFunctionBuilder()).seed(seed);
    }

    public static RandomScoreFunctionBuilder randomFunction(long seed) {
        return (new RandomScoreFunctionBuilder()).seed(seed);
    }

    public static RandomScoreFunctionBuilder randomFunction(String seed) {
        return (new RandomScoreFunctionBuilder()).seed(seed);
    }
    
    public static WeightBuilder weightFactorFunction(float weight) {
        return (WeightBuilder)(new WeightBuilder().setWeight(weight));
    }

    public static FieldValueFactorFunctionBuilder fieldValueFactorFunction(String fieldName) {
        return new FieldValueFactorFunctionBuilder(fieldName);
    }
}