D-Net

package eu.dnetlib.data.search.web.api;

import java.util.List;

/**

 * Created by kiatrop on 28/9/2016.

 */

public class CQLQueryGeneration {

    public enum Operator {

        AND("and"),

        OR("or"),

        NOT("not"),

        EQUAL("equal"),

        EXACT("exact");

        private String value;

        Operator(String value) {

            this.value = value;

        }

        private String getValue() {

            return value;

        }

        @Override

        public String toString() {

            return this.getValue();

        }

    }

    public static void appendSimpleTerm(StringBuilder stringBuilder, Operator queryOperator, String termValue) {

        stringBuilder.append(' ').append(queryOperator).append(" (").append(termValue).append(')');

    }

    public static void appendSimpleTerms(StringBuilder stringBuilder, Operator queryOperator, List<String> termValues) {

        for (String termValue: termValues) {

            appendSimpleTerm(stringBuilder, queryOperator, termValue);

        }

    }

    public static void appendTerm(StringBuilder stringBuilder, Operator queryOperator, String termName, Operator termOperator, String termValue) {

        stringBuilder.append(' ').append(queryOperator).append(" ( ").

                append(termName).append(' ').append(termOperator).append(' ').append(termValue).append(" )");

    }

    public static void appendTerms(StringBuilder stringBuilder, Operator queryOperator, String termName, Operator termOperator, List<String> termValues) {

        for (String termValue: termValues) {

            appendTerm(stringBuilder, queryOperator, termName, termOperator, termValue);

        }

    }

}