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Query elasticsearch using SQL

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package org.nlpcn.es4sql.domain;

import java.util.List;

import com.alibaba.druid.sql.ast.SQLExpr;
import com.alibaba.druid.sql.ast.expr.SQLCharExpr;
import com.alibaba.druid.sql.ast.expr.SQLMethodInvokeExpr;
import com.alibaba.druid.sql.ast.expr.SQLNumericLiteralExpr;
import org.elasticsearch.common.xcontent.ToXContent;
import org.elasticsearch.index.query.MatchPhraseQueryBuilder;
import org.elasticsearch.index.query.MatchQueryBuilder;
import org.elasticsearch.index.query.QueryStringQueryBuilder;
import org.elasticsearch.index.query.WildcardQueryBuilder;
import org.nlpcn.es4sql.exception.SqlParseException;



public class Paramer {
	public String analysis;
	public Float boost;
	public String value;

	public static Paramer parseParamer(SQLMethodInvokeExpr method) throws SqlParseException {
		Paramer instance = new Paramer();
		List parameters = method.getParameters();
		instance.value = ((SQLCharExpr) parameters.get(0)).getText();
		SQLExpr sqlExpr = null;
		for (int i = 1; i < parameters.size(); i++) {
			sqlExpr = parameters.get(i);
			if (sqlExpr instanceof SQLCharExpr) {
				instance.analysis = ((SQLCharExpr) sqlExpr).getText();
			} else {
				instance.boost = ((SQLNumericLiteralExpr) sqlExpr).getNumber().floatValue();
			}
		}

		return instance;
	}

	public static ToXContent fullParamer(MatchPhraseQueryBuilder query, Paramer paramer) {
		if (paramer.analysis != null) {
			query.analyzer(paramer.analysis);
		}

		if (paramer.boost != null) {
			query.boost(paramer.boost);
		}
		return query;
	}

	public static ToXContent fullParamer(MatchQueryBuilder query, Paramer paramer) {
		if (paramer.analysis != null) {
			query.analyzer(paramer.analysis);
		}

		if (paramer.boost != null) {
			query.boost(paramer.boost);
		}
		return query;
	}

	public static ToXContent fullParamer(WildcardQueryBuilder query, Paramer paramer) {
		if (paramer.boost != null) {
			query.boost(paramer.boost);
		}
		return query;
	}

    public static ToXContent fullParamer(QueryStringQueryBuilder query, Paramer paramer) {
        if (paramer.analysis != null) {
            query.analyzer(paramer.analysis);
        }

        if (paramer.boost != null) {
            query.boost(paramer.boost);
        }
        return query;
    }
}