org.mycore.datamodel.metadata.MCRMetaSpatial Maven / Gradle / Ivy
/*
* This file is part of *** M y C o R e ***
* See http://www.mycore.de/ for details.
*
* MyCoRe 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.
*
* MyCoRe 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 MyCoRe. If not, see .
*/
package org.mycore.datamodel.metadata;
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Locale;
import java.util.stream.Collectors;
import org.jdom2.Element;
import org.mycore.common.MCRException;
import com.google.gson.JsonArray;
import com.google.gson.JsonObject;
/**
* Stores spatial information for geographic references. The latitude longitude values are stored in an array list,
* where two BigDecimal build a point.
*
* @author Matthias Eichner
* @author Jens Kupferschmidt
*/
public class MCRMetaSpatial extends MCRMetaDefault {
private List data;
/**
* initializes with empty values.
*/
public MCRMetaSpatial() {
super();
this.data = new ArrayList<>();
}
@Deprecated
public MCRMetaSpatial(String subtag, String defaultLanguage, String type, Integer inherited) throws MCRException {
super(subtag, defaultLanguage, type, inherited);
this.data = new ArrayList<>();
}
/**
* The constructor for a MCRMetaSpatial instance with an empty data container.
* @param subtag the name of the subtag
* @param type an optional type or an empty string
* @param inherited a value >= 0
*
* @throws MCRException if the set_subtag value is null or empty
*/
public MCRMetaSpatial(String subtag, String type, Integer inherited) throws MCRException {
super(subtag, null, type, inherited);
this.data = new ArrayList<>();
}
/**
* Returns the spatial data. Two entries build a point. The first is always the latitude and the second one
* is always the longitude value.
*
* @return list of the spatial data
*/
public List getData() {
return this.data;
}
public void setData(List data) {
this.data = data;
}
/**
* Adds a new point to the data.
*
* @param lat the latitude value
* @param lng the longitude value
*/
public void add(BigDecimal lat, BigDecimal lng) {
this.data.add(lat);
this.data.add(lng);
}
@Override
public void setFromDOM(Element element) throws MCRException {
super.setFromDOM(element);
String textData = element.getText();
String[] splitData = textData.split(",");
if (splitData.length % 2 != 0) {
throw new MCRException(String.format(Locale.ROOT,
"Unable to parse MCRMetaSpatial cause text data '%s' contains invalid content", textData));
}
try {
Arrays.stream(splitData).map(BigDecimal::new).forEach(this.data::add);
} catch (NumberFormatException nfe) {
throw new MCRException(String.format(Locale.ROOT,
"Unable to parse MCRMetaSpatial cause text data '%s' contains invalid content", textData), nfe);
}
}
@Override
public Element createXML() throws MCRException {
Element element = super.createXML();
return element.setText(this.data.stream().map(BigDecimal::toPlainString).collect(Collectors.joining(",")));
}
/**
* Creates the JSON representation. Extends the {@link MCRMetaDefault#createJSON()} method
* with the following data.
*
*
* {
* data: [50.92878, 11.5899]
* }
*
*
*/
@Override
public JsonObject createJSON() {
JsonObject json = super.createJSON();
JsonArray dataArray = new JsonArray();
this.data.forEach(dataArray::add);
json.add("data", dataArray);
return json;
}
@Override
public void validate() throws MCRException {
super.validate();
if (this.data.isEmpty()) {
throw new MCRException("spatial list should contain content");
}
if (this.data.size() % 2 != 0) {
throw new MCRException(
String.format(Locale.ROOT, "spatial list content '%s' is uneven", this.data.toString()));
}
}
/**
* clone of this instance
*
* you will get a (deep) clone of this element
*
* @see java.lang.Object#clone()
*/
@Override
public MCRMetaSpatial clone() {
MCRMetaSpatial clone = (MCRMetaSpatial) super.clone();
clone.data = new ArrayList<>(this.data); // Big Integer is immutable
return clone;
}
}