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Java example source code file (TestComponentSerialization.java)

This example Java source code file (TestComponentSerialization.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

area, awt, chart, component, exception, histogram, list, objectmapper, string, style, testcomponentserialization, vertical, yes

The TestComponentSerialization.java Java example source code

package org.deeplearning4j.ui;

import com.fasterxml.jackson.databind.ObjectMapper;
import org.deeplearning4j.ui.api.Component;
import org.deeplearning4j.ui.api.LengthUnit;
import org.deeplearning4j.ui.api.Style;
import org.deeplearning4j.ui.components.chart.ChartHistogram;
import org.deeplearning4j.ui.components.chart.ChartLine;
import org.deeplearning4j.ui.components.chart.ChartScatter;
import org.deeplearning4j.ui.components.chart.ChartStackedArea;
import org.deeplearning4j.ui.components.chart.style.StyleChart;
import org.deeplearning4j.ui.components.component.ComponentDiv;
import org.deeplearning4j.ui.components.component.style.StyleDiv;
import org.deeplearning4j.ui.components.decorator.DecoratorAccordion;
import org.deeplearning4j.ui.components.decorator.style.StyleAccordion;
import org.deeplearning4j.ui.components.table.ComponentTable;
import org.deeplearning4j.ui.components.table.style.StyleTable;
import org.deeplearning4j.ui.components.text.ComponentText;
import org.deeplearning4j.ui.components.text.style.StyleText;
import org.junit.Test;

import java.awt.*;

import static org.junit.Assert.assertEquals;

/**
 * Created by Alex on 9/04/2016.
 */
public class TestComponentSerialization {

    @Test
    public void testSerialization() throws Exception {

        //Common style for all of the charts
        StyleChart s = new StyleChart.Builder()
                .width(640, LengthUnit.Px)
                .height(480, LengthUnit.Px)
                .margin(LengthUnit.Px, 100,40,40,20)
                .strokeWidth(2)
                .pointSize(4)
                .seriesColors(Color.GREEN, Color.MAGENTA)
                .titleStyle(new StyleText.Builder().font("courier").fontSize(16).underline(true).color(Color.GRAY).build())
                .build();
        assertSerializable(s);


        //Line chart with vertical grid
        Component c1 = new ChartLine.Builder("Line Chart!",s)
                .addSeries("series0", new double[]{0,1,2,3}, new double[]{0,2,1,4})
                .addSeries("series1", new double[]{0,1,2,3}, new double[]{0,1,0.5,2.5})
                .setGridWidth(1.0,null) //Vertical grid lines, no horizontal grid
                .build();
        assertSerializable(c1);

        //Scatter chart
        Component c2 = new ChartScatter.Builder("Scatter!",s)
                .addSeries("series0", new double[]{0,1,2,3}, new double[]{0,2,1,4})
                .showLegend(true)
                .setGridWidth(0,0)
                .build();
        assertSerializable(c2);

        //Histogram with variable sized bins
        Component c3 = new ChartHistogram.Builder("Histogram!",s)
                .addBin(-1,-0.5,0.2)
                .addBin(-0.5,0,0.5)
                .addBin(0,1,2.5)
                .addBin(1,2,0.5)
                .build();
        assertSerializable(c3);

        //Stacked area chart
        Component c4 = new ChartStackedArea.Builder("Area Chart!",s)
                .setXValues(new double[]{0,1,2,3,4,5})
                .addSeries("series0",new double[]{0,1,0,2,0,1})
                .addSeries("series1",new double[]{2,1,2,0.5,2,1})
                .build();
        assertSerializable(c4);

        //Table
        StyleTable ts = new StyleTable.Builder()
                .backgroundColor(Color.LIGHT_GRAY)
                .headerColor(Color.ORANGE)
                .borderWidth(1)
                .columnWidths(LengthUnit.Percent, 20,40,40)
                .width(500, LengthUnit.Px)
                .height(200, LengthUnit.Px)
                .build();
        assertSerializable(ts);

        Component c5 = new ComponentTable.Builder(ts)
                .header("H1","H2","H3")
                .content(new String[][]{
                        {"row0col0", "row0col1", "row0col2"},
                        {"row1col0", "row1col1", "row1col2"}
                }).build();
        assertSerializable(c5);

        //Accordion decorator, with the same chart
        StyleAccordion ac = new StyleAccordion.Builder()
                .height(480,LengthUnit.Px).width(640,LengthUnit.Px).build();
        assertSerializable(ac);

        Component c6 = new DecoratorAccordion.Builder(ac)
                .title("Accordion - Collapsed By Default!")
                .setDefaultCollapsed(true)
                .addComponents(c5)
                .build();
        assertSerializable(c6);

        //Text with styling
        Component c7 = new ComponentText.Builder("Here's some blue text in a green div!",
                new StyleText.Builder().font("courier").fontSize(30).underline(true).color(Color.BLUE).build()).build();
        assertSerializable(c7);

        //Div, with a chart inside
        Style divStyle = new StyleDiv.Builder()
                .width(30,LengthUnit.Percent).height(200,LengthUnit.Px)
                .backgroundColor(Color.GREEN)
                .floatValue(StyleDiv.FloatValue.right)
                .build();
        assertSerializable(divStyle);
        Component c8 = new ComponentDiv(divStyle, c7, new ComponentText("(Also: it's float right, 30% width, 200 px high )",null));
        assertSerializable(c8);
    }


    private static void assertSerializable(Component component) throws Exception {

        ObjectMapper om = new ObjectMapper();

        String json = om.writeValueAsString(component);

        Component fromJson = om.readValue(json,Component.class);

        assertEquals(component.toString(),fromJson.toString());     //Yes, this is a bit hacky, but lombok equal method doesn't seem to work properly for List<double[]> etc
    }

    private static void assertSerializable(Style style) throws Exception {
        ObjectMapper om = new ObjectMapper();

        String json = om.writeValueAsString(style);

        Style fromJson = om.readValue(json,Style.class);

        assertEquals(style.toString(),fromJson.toString());         //Yes, this is a bit hacky, but lombok equal method doesn't seem to work properly for List<double[]> etc
    }

}

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