Add Support for ordering and limiting results in CLI show commands

hoodie-cli/src/main/java/com/uber/hoodie/cli/HoodiePrintHelper.java

@@ -20,11 +20,89 @@ import dnl.utils.text.table.TextTable;
 import java.io.ByteArrayOutputStream;
 import java.io.PrintStream;
 import java.nio.charset.Charset;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import java.util.function.Function;
 
+/**
+ * Helper class to render table for hoodie-cli
+ */
 public class HoodiePrintHelper {
 
+  /**
+   * Print header and raw rows
+   * @param header Header
+   * @param rows Raw Rows
+   * @return output
+   */
   public static String print(String[] header, String[][] rows) {
     TextTable textTable = new TextTable(header, rows);
+    return printTextTable(textTable);
+  }
+
+  /**
+   * Serialize Table to printable string
+   * @param rowHeader Row Header
+   * @param fieldNameToConverterMap  Field Specific Converters
+   * @param sortByField Sorting field
+   * @param isDescending Order
+   * @param limit Limit
+   * @param headerOnly Headers only
+   * @param rows List of rows
+   * @return Serialized form for printing
+   */
+  public static String print(TableHeader rowHeader,
+      Map<String, Function<Object, String>> fieldNameToConverterMap,
+      String sortByField, boolean isDescending, Integer limit, boolean headerOnly,
+      List<Comparable[]> rows) {
+
+    if (headerOnly) {
+      return HoodiePrintHelper.print(rowHeader);
+    }
+
+    Table table = new Table(rowHeader, fieldNameToConverterMap,
+        Optional.ofNullable(sortByField.isEmpty() ? null : sortByField),
+        Optional.ofNullable(isDescending),
+        Optional.ofNullable(limit <= 0 ? null : limit)).addAllRows(rows).flip();
+
+    return HoodiePrintHelper.print(table);
+  }
+
+  /**
+   * Render rows in Table
+   * @param buffer Table
+   * @return output
+   */
+  private static String print(Table buffer) {
+    String[] header = new String[buffer.getFieldNames().size()];
+    buffer.getFieldNames().toArray(header);
+
+    String[][] rows = buffer.getRenderRows().stream()
+        .map(l -> l.stream().toArray(String[]::new))
+        .toArray(String[][]::new);
+    TextTable textTable = new TextTable(header, rows);
+    return printTextTable(textTable);
+  }
+
+  /**
+   * Render only header of the table
+   * @param header Table Header
+   * @return output
+   */
+  private static String print(TableHeader header) {
+    String[] head = new String[header.getFieldNames().size()];
+    header.getFieldNames().toArray(head);
+    TextTable textTable = new TextTable(head, new String[][]{});
+    return printTextTable(textTable);
+  }
+
+  /**
+   * Print Text table
+   * @param textTable Text table to be printed
+   * @return
+   */
+  private static String printTextTable(TextTable textTable) {
     ByteArrayOutputStream baos = new ByteArrayOutputStream();
     PrintStream ps = new PrintStream(baos);
     textTable.printTable(ps, 4);