EDIT

/**

* Copyright (C) 2017 EDIT

* European Distributed Institute of Taxonomy

* http://www.e-taxonomy.eu

*

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.cdm.persistence.dao.common;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.EnumSet;

import java.util.List;

import eu.etaxonomy.cdm.persistence.query.MatchMode;

/**

 * See <code>NameServiceImplTest.testFindByTitle()</code> for usage examples.

 *

 * @author a.kohlbecker

 * @since May 8, 2017

 */

public class Restriction<T extends Object> {

    public enum Operator {

        AND,

        OR,

        AND_NOT,

        OR_NOT;

    }

    private static final EnumSet<Operator> NOT_OPERATORS = EnumSet.of(Operator.AND_NOT, Operator.OR_NOT);

    private String propertyName;

    private MatchMode matchMode;

    private Operator operator = Operator.AND;

    private List<T> values = null;

    public Restriction(){

        super();

    }

    /**

     * @param propertyName

     * @param matchMode is only applied if the <code>value</code> is a <code>String</code> object

     */

    public Restriction(String propertyName, MatchMode matchMode, T ... values ) {

        this(propertyName, Operator.AND, matchMode, values);

    }

    public Restriction(String propertyName, Operator operator, MatchMode matchMode, T ... values ) {

        this.propertyName = propertyName;

        this.operator = operator;

        if(values.length > 0){

            this.setValues(Arrays.asList(values));

            if(values[0] != null && values[0] instanceof String){

                this.matchMode = matchMode;

            }

        }

    }

    public String getPropertyName() {

        return propertyName;

    }

    public void setPropertyName(String propertyName) {

        this.propertyName = propertyName;

    }

    public MatchMode getMatchMode() {

        return matchMode;

    }

    public void setMatchMode(MatchMode matchMode) {

        this.matchMode = matchMode;

    }

    /**

     * @return the values, never <code>null</code>

     */

    public List<T> getValues() {

        if(values == null){

            values = new ArrayList<>();

        }

        return values;

    }

    public void setValues(List<T> values) {

        this.values = values;

    }

    public void addValue(T value){

        getValues().add(value);

    }

    public Operator getOperator() {

        return operator;

    }

    public void setOperator(Operator operator) {

        this.operator = operator;

    }

    public boolean isNot() {

        return NOT_OPERATORS.contains(operator);

    }

}