io.github.hlfsousa.ncml.examples.ucararray.GroupMapWrapper Maven / Gradle / Ivy

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package io.github.hlfsousa.ncml.examples.ucararray;

/*-
 * #%L
 * ncml-io
 * %%
 * Copyright (C) 2020 - 2021 Henrique L. F. de Sousa
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 2.1 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 Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * .
 * #L%
 */

import io.github.hlfsousa.ncml.io.ConvertUtils;
import io.github.hlfsousa.ncml.io.RuntimeConfiguration;
import io.github.hlfsousa.ncml.io.wrapper.NetcdfWrapper;
import java.io.IOException;
import java.util.*;
import java.util.regex.Pattern;
import java.util.regex.Matcher;
import ucar.ma2.*;
import ucar.nc2.Dimension;
import ucar.nc2.Group;
import ucar.nc2.Variable;


public class GroupMapWrapper extends NetcdfWrapper implements GroupMap {

    private class ItemsWrapper implements ItemsVariable {

        private final Variable variable;
        private Array value;
        
        public ItemsWrapper(Variable variable) {
            this.variable = variable;
        }

        @Override
        public Array getValue() {
            if (value == null) {
                value = getNumericArray(variable);
            }
            return value;
        }
        
        @Override
        public void setValue(Array value) {
            throw new UnsupportedOperationException();
        }

        public List getDimensions() {
            return variable.getDimensions();
        }

        public void setDimensions(List dimensions) {
            throw new UnsupportedOperationException();
        }

    }



    public GroupMapWrapper(Group group, RuntimeConfiguration runtimeConfiguration) {
        super(group, runtimeConfiguration);
    }

    private ConvertUtils convertUtils = ConvertUtils.getInstance();
    private Map variableCache = new HashMap();
    
    // additionalFields >>
    // << additionalFields

    @SuppressWarnings("unchecked")
    public ItemsVariable getItems() {
        return (ItemsVariable) variableCache.computeIfAbsent("items",
                varName -> Optional.ofNullable(group.findVariable(varName))
                        .map(ItemsWrapper::new)
                        .orElse(null));
    }

    public void setItems(ItemsVariable items) {
        throw new UnsupportedOperationException();
    }

    @Override
    public String getName() {
        return Optional.ofNullable(group.findAttribute("name"))
                .map(name -> name.getStringValue())
                .orElse(null);
    }

    @Override
    public void setName(String name) {
        throw new UnsupportedOperationException();
    }

    // additionalMethods >>
    // << additionalMethods

}