回答編集履歴
2
コードを追加
test
CHANGED
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@@ -235,3 +235,285 @@
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name=cnt_all, value=10
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```
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全ての Attribute を設定するため, 集計をクラス化してみました.
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form/color を enum にし, 異常値を弾くようにしました.
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```java
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import java.util.*;
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public class Q214024_2 {
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enum Form {
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circle, triangle, square, ellipse, rhombus, total;
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static int size() { return Form.values().length; }
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//テスト用
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static Form getValue(Random random) {
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return Form.values()[random.nextInt(Form.total.ordinal())];
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}
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};
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enum Color {
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red, blue, yellow, black, white, total;
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static int size() { return Color.values().length; }
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//テスト用
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static Color getValue(Random random) {
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return Color.values()[random.nextInt(Color.total.ordinal())];
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}
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};
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//集計テーブル
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private static class SummaryTable {
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private int[][] values; //件数
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SummaryTable() {
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values = new int[Form.size()][Color.size()];
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for(int i=0; i<values.length; i++)
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for(int j=0; j<values[i].length; j++)
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values[i][j] = 0;
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}
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//form,colorの件数を +1 する
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void increment(Form form, Color color) {
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values[form.ordinal()][color.ordinal()] ++;
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}
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//(Model に設定する) Attribute と件数のマップを返す
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Map<String,Integer> getAttributeMap() {
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calcTotals();
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Map<String,Integer> map = new HashMap<>();
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for(Form form : Form.values()) {
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for(Color color : Color.values()) {
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map.put(getAttributeName(form,color), values[form.ordinal()][color.ordinal()]);
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}
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}
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return map;
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}
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//各合計を計算
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private void calcTotals() {
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for(int j=0; j<Color.size(); j++) values[Form.total.ordinal()][j] = 0;
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for(int i=0; i<Form.size(); i++) {
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values[i][Color.total.ordinal()] = 0;
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for(int j=0; j<Color.total.ordinal(); j++) {
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values[i][Color.total.ordinal()] += values[i][j];
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if(i != Form.total.ordinal()) values[Form.total.ordinal()][j] += values[i][j];
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}
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}
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}
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//Attribute 名を返す
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private String getAttributeName(Form form, Color color) {
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if(form == Form.total && color == Color.total) return "cnt_all";
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StringBuilder name = new StringBuilder("cnt_");
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if(form != Form. total) name.append("f").append(form.ordinal() +1);
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if(color != Color.total) name.append("c").append(color.ordinal()+1);
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return name.toString();
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}
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}
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private String getDB(Model model){
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List<Table1Entity> table1DataList = table1Repository.findAll();
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//集計
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SummaryTable table = new SummaryTable();
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for (Table1Entity entity : table1DataList) {
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try {
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Form form = Form.valueOf(entity.getForm());
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Color color = Color.valueOf(entity.getColor());
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table.increment(form, color);
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} catch(IllegalArgumentException e) {
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System.err.println("form または color の値が異常です. form="+entity.getForm()+", color="+entity.getColor());
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}
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}
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//設定
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for(Map.Entry<String, Integer> entry : table.getAttributeMap().entrySet()) {
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model.addAttribute(entry.getKey(), entry.getValue());
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}
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return ""+table1DataList.size();
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}
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// 以下テスト用
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private Table1Repository table1Repository = new Table1Repository();
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void add(String form, String color) {
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table1Repository.add(form, color);
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}
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void printAll() {
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table1Repository.printAll();
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}
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static class Model {
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void addAttribute(String name, int value) {
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System.out.println("name="+name+", value="+value);
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}
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}
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static class Table1Entity {
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private String form, color;
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Table1Entity(String form, String color) { this.form=form; this.color=color; }
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String getForm(){ return form; }
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String getColor() { return color; }
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public String toString() { return form+":"+color; }
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}
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static class Table1Repository {
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private List<Table1Entity> list = new ArrayList<Table1Entity>();
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void add(String form, String color) {
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list.add(new Table1Entity(form, color));
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}
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List<Table1Entity> findAll() {
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return list;
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}
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void printAll() {
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for(Table1Entity entity : list) System.out.println(entity);
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}
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}
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public static void main(String args[]) {
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Q214024_2 q214024 = new Q214024_2();
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Random random = new Random();
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for(int i=0; i<10; i++) {
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q214024.add(Form.getValue(random).name(), Color.getValue(random).name());
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}
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//q214024.add("zzz", Color.getValue(random).name());
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q214024.printAll();
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System.out.println("----");
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q214024.getDB(new Model());
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}
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}
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518
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```
|
1
メソッド名間違い
test
CHANGED
|
@@ -2,7 +2,7 @@
|
|
|
2
2
|
|
|
3
3
|
ランダムに10件のデータを用意して集計しています.
|
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4
4
|
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|
5
|
-
一応 model.
|
|
5
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+
一応 model.addAttribute まで行うようにしましたが, 無いデータ(=0件)分は行っていません.
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6
6
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7
7
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8
8
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