fr.ird.observe.dto.DtoPropertyModifications Maven / Gradle / Ivy

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package fr.ird.observe.dto;

/*-
 * #%L
 * ObServe Toolkit :: Dto
 * %%
 * Copyright (C) 2017 - 2021 Ultreia.io
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program.  If not, see
 * .
 * #L%
 */

import io.ultreia.java4all.bean.JavaBean;
import io.ultreia.java4all.bean.monitor.BeanMonitor;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

import java.io.Serializable;
import java.util.LinkedHashSet;
import java.util.Optional;
import java.util.Set;

/**
 * Created on 22/09/2021.
 *
 * @author Tony Chemit - [email protected]
 * @since 9.0.0
 */
public class DtoPropertyModifications implements ObserveDto {
    private static final Logger log = LogManager.getLogger(DtoPropertyModifications.class);

    private final String id;
    private final String label;
    private final Set properties;
    private final String lengthWeightParameterNotFound;

    public static abstract class Builder {
        private final BeanMonitor monitor;
        private final Set modifications = new LinkedHashSet<>();
        private String id;
        private String label;
        private String lengthWeightParameterNotFound;

        public Builder(String... propertyNames) {
            monitor = new BeanMonitor(propertyNames);
        }

        protected void watch(IdDto dto) {
            modifications.clear();
            id = label = lengthWeightParameterNotFound = null;
            monitor.setBean(dto);
        }

        protected void flush() {
            if (monitor.wasModified()) {
                IdDto dto = (IdDto) monitor.getBean();
                flushToResult(dto, monitor.getModifiedProperties());
            }
            monitor.setBean(null);
        }

        protected Optional build() {
            boolean noModification = modifications.isEmpty();
            if (noModification) {
                return Optional.empty();
            }
            R result = createResult(id, label, modifications, lengthWeightParameterNotFound);
            return Optional.of(result);
        }

        protected abstract R createResult(String id, String label, Set modifications, String lengthWeightParameterNotFound);

        public void flushToResult(IdDto dto, String... propertyNamesModified) {
            this.id = dto.getId();
            this.label = dto.toString();
            for (String modifiedProperty : propertyNamesModified) {
                DtoPropertyModification element = new DtoPropertyModification(dto, modifiedProperty);
                modifications.add(element);
            }
        }

        public void registerLengthWeightParameterNotFound(String lengthWeightParameterNotFound) {
            this.lengthWeightParameterNotFound = lengthWeightParameterNotFound;
            if (log.isWarnEnabled()) {
                log.warn(lengthWeightParameterNotFound);
            }
        }
    }

    public DtoPropertyModifications(String id, String label, Set properties, String lengthWeightParameterNotFound) {
        this.id = id;
        this.label = label;
        this.properties = properties;
        this.lengthWeightParameterNotFound = lengthWeightParameterNotFound;
    }

    public String getId() {
        return id;
    }

    public String getLabel() {
        return label;
    }

    public Set getProperties() {
        return properties;
    }

    public String getLengthWeightParameterNotFound() {
        return lengthWeightParameterNotFound;
    }

    public void flushToDto(JavaBean dto) {
        properties.forEach(modification -> {
            Serializable newValue = modification.getNewValue();
            dto.set(modification.getPropertyName(), newValue);
        });
    }
}