upload current sources

2026-10-12 12:58:02 -04:00
commit 16bafab54a
21 changed files with 2195 additions and 0 deletions
@@ -0,0 +1,88 @@
+package com.minicircuits.formatter;
+
+import com.minicircuits.QueryResult;
+import com.minicircuits.Utils;
+import java.io.*;
+import java.nio.charset.StandardCharsets;
+import java.sql.SQLException;
+import java.sql.Types;
+import java.util.Properties;
+import javax.servlet.http.HttpServletResponse;
+
+public class JsonFormatter implements ResponseFormatter {
+
+    public JsonFormatter(Properties configProps) {
+        // configProps not needed by this formatter
+    }
+
+    @Override
+    public void format(HttpServletResponse response, QueryResult result) throws IOException, SQLException {
+        response.setContentType("application/json");
+        response.setCharacterEncoding("UTF-8");
+        response.setBufferSize(8192);
+
+        try (BufferedOutputStream bos = new BufferedOutputStream(response.getOutputStream(), 8192);
+             OutputStreamWriter osw = new OutputStreamWriter(bos, StandardCharsets.UTF_8)) {
+
+            int colCount = result.metadata.getColumnCount();
+            osw.write("[");
+            boolean firstRow = true;
+            int rowCount = 0;
+
+            while (result.resultSet.next()) {
+                if (!firstRow) {
+                    osw.write(",");
+                }
+                firstRow = false;
+
+                osw.write("{");
+                for (int i = 1; i <= colCount; i++) {
+                    if (i > 1) osw.write(",");
+                    String columnName = result.metadata.getColumnName(i);
+                    String value = result.resultSet.getString(i);
+
+                    int columnType = result.metadata.getColumnType(i);
+                    String columnTypeName = result.metadata.getColumnTypeName(i);
+
+                    osw.write("\"");
+                    osw.write(Utils.escapeJson(columnName));
+                    osw.write("\":");
+                    if (value == null) {
+                        osw.write("null");
+                    } else if (Utils.isNumericType(columnType, columnTypeName)) {
+                        try {
+                            String trimmed = value.trim();
+                            if (columnType == Types.FLOAT
+                                    || columnType == Types.DOUBLE
+                                    || columnType == Types.REAL
+                                    || result.metadata.getScale(i) > 0) {
+                                osw.write(String.valueOf(Double.parseDouble(trimmed)));
+                            } else {
+                                osw.write(String.valueOf(Long.parseLong(trimmed)));
+                            }
+                        } catch (NumberFormatException e) {
+                            osw.write("\"");
+                            osw.write(Utils.escapeJson(Utils.rightTrim(value)));
+                            osw.write("\"");
+                        }
+                    } else if (columnType == Types.BOOLEAN) {
+                        osw.write(String.valueOf(result.resultSet.getBoolean(i)));
+                    } else {
+                        osw.write("\"");
+                        osw.write(Utils.escapeJson(Utils.rightTrim(value)));
+                        osw.write("\"");
+                    }
+                }
+                osw.write("}");
+                rowCount++;
+
+                if (rowCount % 1000 == 0) {
+                    osw.flush();
+                }
+            }
+
+            osw.write("]");
+            osw.flush();
+        }
+    }
+}