|
| 1 | +package com.timestored.sqldash.chart; |
| 2 | + |
| 3 | +import java.awt.BorderLayout; |
| 4 | +import java.awt.Color; |
| 5 | +import java.awt.Component; |
| 6 | +import java.sql.ResultSet; |
| 7 | +import java.sql.ResultSetMetaData; |
| 8 | +import java.sql.SQLException; |
| 9 | +import java.util.Collections; |
| 10 | +import java.util.HashSet; |
| 11 | +import java.util.List; |
| 12 | +import java.util.Set; |
| 13 | + |
| 14 | +import javax.swing.BorderFactory; |
| 15 | +import javax.swing.JButton; |
| 16 | +import javax.swing.JPanel; |
| 17 | + |
| 18 | +import com.timestored.connections.JdbcTypes; |
| 19 | +import com.timestored.theme.Icon; |
| 20 | +import com.timestored.theme.Theme; |
| 21 | + |
| 22 | + |
| 23 | +/** |
| 24 | + * AUTO chart selection strategy that automatically picks the best chart type |
| 25 | + * based on the result set column structure. |
| 26 | + */ |
| 27 | +public enum AutoRedrawViewStrategy implements ViewStrategy { |
| 28 | + |
| 29 | + INSTANCE; |
| 30 | + |
| 31 | + public static boolean displayChartActivated = false; |
| 32 | + private static final String DESC = "Automatically selects the best chart type based on your data.<br/>" + |
| 33 | + "Analyzes column types (date/time, string, numeric) to pick an appropriate visualization."; |
| 34 | + |
| 35 | + private static final Set<String> CANDLESTICK_COLS = new HashSet<String>(); |
| 36 | + static { |
| 37 | + CANDLESTICK_COLS.add("high"); |
| 38 | + CANDLESTICK_COLS.add("low"); |
| 39 | + CANDLESTICK_COLS.add("h"); |
| 40 | + CANDLESTICK_COLS.add("l"); |
| 41 | + } |
| 42 | + |
| 43 | + @Override public UpdateableView getView(final ChartTheme theme) { |
| 44 | + return new AutoUpdateableView(theme, null); |
| 45 | + } |
| 46 | + |
| 47 | + /** |
| 48 | + * Inner class that delegates to the appropriate chart strategy based on data analysis. |
| 49 | + */ |
| 50 | + private static class AutoUpdateableView implements UpdateableView { |
| 51 | + |
| 52 | + private final ChartTheme theme; |
| 53 | + private final ChartAppearanceConfig appearanceConfig; |
| 54 | + private UpdateableView delegateView; |
| 55 | + private JPanel containerPanel; |
| 56 | + |
| 57 | + AutoUpdateableView(ChartTheme theme, ChartAppearanceConfig appearanceConfig) { |
| 58 | + this.theme = theme; |
| 59 | + this.appearanceConfig = appearanceConfig; |
| 60 | + this.containerPanel = new JPanel(new BorderLayout()); |
| 61 | + containerPanel.add(Theme.getHtmlText("Waiting for data..."), BorderLayout.CENTER); |
| 62 | + } |
| 63 | + |
| 64 | + @Override public void update(ResultSet rs, ChartResultSet chartResultSet) throws ChartFormatException { |
| 65 | + |
| 66 | + ViewStrategy selectedStrategy = null; |
| 67 | + if(displayChartActivated) { |
| 68 | + selectedStrategy = selectStrategy(rs, chartResultSet); |
| 69 | + } |
| 70 | + // Pass appearance config to the delegate if the strategy supports it |
| 71 | + if(selectedStrategy == null) { |
| 72 | + delegateView =null; |
| 73 | + } else if (selectedStrategy.supportsAppearanceConfig() && appearanceConfig != null) { |
| 74 | + delegateView = selectedStrategy.getView(theme, appearanceConfig); |
| 75 | + } else { |
| 76 | + delegateView = selectedStrategy.getView(theme); |
| 77 | + } |
| 78 | + |
| 79 | + containerPanel.removeAll(); |
| 80 | + if(!displayChartActivated) { |
| 81 | + // centre the button and highlight for emphasis |
| 82 | + JButton activateChartBtn = new JButton("Activate Auto Charting", Theme.CIcon.CHART_CURVE_ADD.get16()); |
| 83 | + activateChartBtn.addActionListener(e -> { |
| 84 | + displayChartActivated = true; |
| 85 | + try { |
| 86 | + update(rs, chartResultSet); |
| 87 | + } catch (ChartFormatException e1) { } |
| 88 | + }); |
| 89 | + JPanel btnPanel = new JPanel(); |
| 90 | + btnPanel.add(activateChartBtn); |
| 91 | + btnPanel.setBorder(BorderFactory.createEmptyBorder(20,20,20,20)); |
| 92 | + containerPanel.add(btnPanel, BorderLayout.NORTH); |
| 93 | + containerPanel.add(Theme.getHtmlText("Auto Charting is deactivated. Please enable to see chart."), BorderLayout.CENTER); |
| 94 | + } else if(delegateView == null) { |
| 95 | + containerPanel.add(Theme.getHtmlText("Result is large. Choose specific chart to try charting."), BorderLayout.CENTER); |
| 96 | + } else { |
| 97 | + containerPanel.add(delegateView.getComponent(), BorderLayout.CENTER); |
| 98 | + delegateView.update(rs, chartResultSet); |
| 99 | + } |
| 100 | + |
| 101 | + containerPanel.revalidate(); |
| 102 | + containerPanel.repaint(); |
| 103 | + } |
| 104 | + |
| 105 | + @Override public Component getComponent() { |
| 106 | + return containerPanel; |
| 107 | + } |
| 108 | + } |
| 109 | + |
| 110 | + /** |
| 111 | + * Selects the best chart strategy based on the result set structure. |
| 112 | + * Rules are applied in priority order - first match wins. |
| 113 | + */ |
| 114 | + static ViewStrategy selectStrategy(ResultSet rs, ChartResultSet chartResultSet) { |
| 115 | + if (chartResultSet == null) { |
| 116 | + return DataTableViewStrategy.getInstance(); |
| 117 | + } |
| 118 | + if(chartResultSet.getRowCount() > 50_000) { |
| 119 | + // For very large result sets, do not attempt auto charting |
| 120 | + return null; |
| 121 | + } |
| 122 | + |
| 123 | + |
| 124 | + try { |
| 125 | + // Analyze column structure |
| 126 | + rs.beforeFirst(); |
| 127 | + ResultSetMetaData md = rs.getMetaData(); |
| 128 | + int colCount = md.getColumnCount(); |
| 129 | + |
| 130 | + int firstDateIdx = -1; |
| 131 | + int firstStringIdx = -1; |
| 132 | + int numericCount = 0; |
| 133 | + int stringCount = 0; |
| 134 | + int consecutiveNumericFromFirstString = 0; |
| 135 | + boolean hasHighLow = false; |
| 136 | + |
| 137 | + for (int c = 1; c <= colCount; c++) { |
| 138 | + int ctype = md.getColumnType(c); |
| 139 | + String ctypeName = md.getColumnTypeName(c); |
| 140 | + String colName = md.getColumnName(c).toLowerCase(); |
| 141 | + |
| 142 | + boolean isNumeric = SqlHelper.isNumeric(ctype, ctypeName); |
| 143 | + boolean isTemporal = SqlHelper.isTemporal(ctype, ctypeName); |
| 144 | + boolean isStringy = !isNumeric && !isTemporal; |
| 145 | + |
| 146 | + if (isTemporal && firstDateIdx == -1) { |
| 147 | + firstDateIdx = c; |
| 148 | + } |
| 149 | + if (isStringy && firstStringIdx == -1) { |
| 150 | + firstStringIdx = c; |
| 151 | + } |
| 152 | + if (isNumeric) { |
| 153 | + numericCount++; |
| 154 | + } |
| 155 | + if (isStringy) { |
| 156 | + stringCount++; |
| 157 | + } |
| 158 | + |
| 159 | + // Check for candlestick columns |
| 160 | + if (CANDLESTICK_COLS.contains(colName)) { |
| 161 | + hasHighLow = true; |
| 162 | + } |
| 163 | + } |
| 164 | + |
| 165 | + // Count consecutive numerics after first string column ends |
| 166 | + if (firstStringIdx > 0) { |
| 167 | + boolean foundNonString = false; |
| 168 | + for (int c = firstStringIdx; c <= colCount; c++) { |
| 169 | + int ctype = md.getColumnType(c); |
| 170 | + String ctypeName = md.getColumnTypeName(c); |
| 171 | + boolean isNumeric = SqlHelper.isNumeric(ctype, ctypeName); |
| 172 | + boolean isTemporal = SqlHelper.isTemporal(ctype, ctypeName); |
| 173 | + boolean isStringy = !isNumeric && !isTemporal; |
| 174 | + |
| 175 | + if (!isStringy) { |
| 176 | + foundNonString = true; |
| 177 | + } |
| 178 | + if (foundNonString && isNumeric) { |
| 179 | + consecutiveNumericFromFirstString++; |
| 180 | + } else if (foundNonString && !isNumeric) { |
| 181 | + break; |
| 182 | + } |
| 183 | + } |
| 184 | + } |
| 185 | + |
| 186 | + // Rule 1: Candlestick - check for high/low columns (highest priority) |
| 187 | + if (hasHighLow && chartResultSet.getTimeCol() != null) { |
| 188 | + return CandleStickViewStrategy.INSTANCE; |
| 189 | + } |
| 190 | + |
| 191 | + // Rule 2: Time-Based Charts - date/time column appears before any string column |
| 192 | + if (firstDateIdx > 0 && (firstStringIdx == -1 || firstDateIdx < firstStringIdx)) { |
| 193 | + return TimeseriesViewStrategy.INSTANCE; |
| 194 | + } |
| 195 | + |
| 196 | + // Rule 3: Bubble Chart - string columns followed by exactly 3 numeric columns |
| 197 | + if (stringCount > 0 && consecutiveNumericFromFirstString == 3) { |
| 198 | + return BubbleChartViewStrategy.INSTANCE; |
| 199 | + } |
| 200 | + |
| 201 | + // Rule 4: Scatter Plot - no dates, first non-string is numeric, at least 2 numeric columns |
| 202 | + if (firstDateIdx == -1 && numericCount >= 2) { |
| 203 | + // Check if first non-string column is numeric |
| 204 | + for (int c = 1; c <= colCount; c++) { |
| 205 | + int ctype = md.getColumnType(c); |
| 206 | + String ctypeName = md.getColumnTypeName(c); |
| 207 | + boolean isNumeric = SqlHelper.isNumeric(ctype, ctypeName); |
| 208 | + boolean isTemporal = SqlHelper.isTemporal(ctype, ctypeName); |
| 209 | + boolean isStringy = !isNumeric && !isTemporal; |
| 210 | + |
| 211 | + if (!isStringy) { |
| 212 | + if (isNumeric && stringCount == 0) { |
| 213 | + return ScatterPlotViewStrategy.INSTANCE; |
| 214 | + } |
| 215 | + break; |
| 216 | + } |
| 217 | + } |
| 218 | + } |
| 219 | + |
| 220 | + // Rule 5a: Pie Chart - string columns first, exactly 1 numeric column |
| 221 | + if (stringCount > 0 && numericCount == 1 && isStringFirst(md, colCount)) { |
| 222 | + return PieChartViewStrategy.INSTANCE; |
| 223 | + } |
| 224 | + |
| 225 | + // Rule 5b: Stacked Bar Chart - string columns first, 2 or more numeric columns |
| 226 | + if (stringCount > 0 && numericCount >= 2 && isStringFirst(md, colCount)) { |
| 227 | + return StackedBarChartViewStrategy.INSTANCE; |
| 228 | + } |
| 229 | + |
| 230 | + // Rule 6: Histogram - only numeric columns, no strings, no dates |
| 231 | + if (numericCount > 0 && stringCount == 0 && firstDateIdx == -1) { |
| 232 | + return HistogramViewStrategy.INSTANCE; |
| 233 | + } |
| 234 | + |
| 235 | + } catch (SQLException e) { |
| 236 | + // Fall through to default |
| 237 | + } |
| 238 | + |
| 239 | + // Rule 7: Data Table (Fallback) |
| 240 | + return DataTableViewStrategy.getInstance(); |
| 241 | + } |
| 242 | + |
| 243 | + /** Checks if the first column is a string type column */ |
| 244 | + private static boolean isStringFirst(ResultSetMetaData md, int colCount) throws SQLException { |
| 245 | + if (colCount == 0) return false; |
| 246 | + int ctype = md.getColumnType(1); |
| 247 | + String ctypeName = md.getColumnTypeName(1); |
| 248 | + return !SqlHelper.isNumeric(ctype, ctypeName) && !SqlHelper.isTemporal(ctype, ctypeName); |
| 249 | + } |
| 250 | + |
| 251 | + @Override public String getDescription() { return "Auto"; } |
| 252 | + |
| 253 | + @Override public String getFormatExplainationHtml() { return DESC; } |
| 254 | + @Override public String getFormatExplaination() { return DESC; } |
| 255 | + |
| 256 | + @Override public Icon getIcon() { return Theme.CIcon.CHART_CURVE_ADD; } |
| 257 | + @Override public String getQueryEg(JdbcTypes jdbcType) { return null; } |
| 258 | + |
| 259 | + @Override public List<ExampleView> getExamples() { |
| 260 | + return Collections.emptyList(); |
| 261 | + } |
| 262 | + |
| 263 | + @Override public String toString() { return getDescription(); } |
| 264 | + |
| 265 | + @Override public boolean isQuickToRender(ResultSet rs, int rowCount, int numColumnCount) { |
| 266 | + return true; |
| 267 | + } |
| 268 | + |
| 269 | + @Override public String getPulseName() { return "auto"; } |
| 270 | + |
| 271 | + /** |
| 272 | + * AUTO mode supports appearance configuration because it may delegate to |
| 273 | + * chart types (like TimeSeries, StackedBar) that support configuration. |
| 274 | + * The config editor will be shown to allow users to customize the chart. |
| 275 | + */ |
| 276 | + @Override public boolean supportsAppearanceConfig() { return true; } |
| 277 | + |
| 278 | + @Override public UpdateableView getView(ChartTheme theme, ChartAppearanceConfig appearanceConfig) { |
| 279 | + return new AutoUpdateableView(theme, appearanceConfig); |
| 280 | + } |
| 281 | +} |
0 commit comments