Truncate any completely empty columns on the right (#2842)

Fixes #565
The current versions of Open Office create default spreadsheets
with over 1000 empty columns. Keep track of the rightmost
non-empty column when importing and truncate everything else.

Also adds a basic ODS import test.

main/src/com/google/refine/importers/OdsImporter.java

@@ -167,6 +167,7 @@ public class OdsImporter extends TabularImportingParserBase {
 
                     List<Object> cells = new ArrayList<Object>();
                     OdfTableRow row = table.getRowByIndex(nextRow++);
+                    int maxCol = 0;
                     if (row != null) {
                         int lastCell = row.getCellCount();
                         for (int cellIndex = 0; cellIndex <= lastCell; cellIndex++) {
@@ -177,9 +178,13 @@ public class OdsImporter extends TabularImportingParserBase {
                                 cell = extractCell(sourceCell, reconMap);
                             }
                             cells.add(cell);
+                            if (cell != null && cellIndex > maxCol) {
+                                maxCol = cellIndex;
                             }
                         }
-                    return cells;
+                    }
+                    // Right truncate null cells
+                    return cells.subList(0, maxCol + 1);
                 }
             };
 
@@ -223,10 +228,10 @@ public class OdsImporter extends TabularImportingParserBase {
             if ("".equals(value)) {
                 value = null;
             } else {
-                logger.info("Null cell type with non-empty value: " + value);                
+                logger.warn("Null cell type with non-empty value: " + value);
             }
         } else {
-            logger.info("Unexpected cell type " + cellType);
+            logger.warn("Unexpected cell type " + cellType);
             value = cell.getDisplayText();
         }
         return value;

main/src/com/google/refine/importers/TabularImportingParserBase.java

@@ -151,7 +151,7 @@ abstract public class TabularImportingParserBase extends ImportingParserBase {
                         ImporterUtilities.setupColumns(project, columnNames);
                     }
                 } else { // data lines
-                    Row row = new Row(columnNames.size());
+                    Row row = new Row(cells.size());
 
                     if (storeBlankRows) {
                         rowsWithData++;

main/tests/server/src/com/google/refine/importers/OdsImporterTests.java

@@ -0,0 +1,129 @@
+/*
+
+Copyright 2020, Thomas F. Morris
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+ * Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above
+   copyright notice, this list of conditions and the following disclaimer
+   in the documentation and/or other materials provided with the
+   distribution.
+ * Neither the name of Google Inc. nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+ */
+
+package com.google.refine.importers;
+
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+import static org.testng.Assert.assertEquals;
+import static org.testng.Assert.assertFalse;
+import static org.testng.Assert.assertNull;
+import static org.testng.Assert.assertTrue;
+
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+
+import org.slf4j.LoggerFactory;
+import org.testng.Assert;
+import org.testng.annotations.AfterMethod;
+import org.testng.annotations.BeforeMethod;
+import org.testng.annotations.BeforeTest;
+import org.testng.annotations.Test;
+
+import com.fasterxml.jackson.databind.node.ArrayNode;
+import com.google.refine.model.Row;
+import com.google.refine.util.ParsingUtilities;
+
+public class OdsImporterTests extends ImporterTest {
+
+    private static final double EPSILON = 0.0000001;
+    private static final int ROWS = 5;
+    private static final int COLUMNS = 8;
+
+    @Override
+    @BeforeTest
+    public void init() {
+        logger = LoggerFactory.getLogger(this.getClass());
+    }
+
+    //System Under Test
+    OdsImporter SUT = null;
+
+    @Override
+    @BeforeMethod
+    public void setUp(){
+        super.setUp();
+        SUT = new OdsImporter();
+    }
+
+    @Override
+    @AfterMethod
+    public void tearDown(){
+        SUT = null;
+        super.tearDown();
+    }
+
+    @Test
+    public void readOds() throws FileNotFoundException, IOException{
+
+        ArrayNode sheets = ParsingUtilities.mapper.createArrayNode();
+        sheets.add(ParsingUtilities.mapper.readTree("{name: \"file-source#Test Sheet 0\", fileNameAndSheetIndex: \"file-source#0\", rows: 31, selected: true}"));
+        whenGetArrayOption("sheets", options, sheets);
+
+        whenGetIntegerOption("ignoreLines", options, 0);
+        whenGetIntegerOption("headerLines", options, 1);
+        whenGetIntegerOption("skipDataLines", options, 0);
+        whenGetIntegerOption("limit", options, ROWS);
+        whenGetBooleanOption("storeBlankCellsAsNulls",options,true);
+
+        InputStream stream = ClassLoader.getSystemResourceAsStream("films.ods");
+
+        try {
+            parseOneFile(SUT, stream);
+        } catch (Exception e) {
+            Assert.fail(e.getMessage());
+        }
+
+        assertEquals(project.rows.size(), ROWS);
+        Row row = project.rows.get(0);
+        assertEquals(row.cells.size(), COLUMNS);
+        assertEquals((String)row.getCellValue(1),"2 Days In New York");
+        // FIXME: Dates are currently broken
+//        assertEquals(((OffsetDateTime)row.getCellValue(3)).toString().substring(0, 10),"2012-03-28");
+        assertEquals(((Number)row.getCellValue(5)).doubleValue(), 4.5, EPSILON);
+
+        assertFalse((Boolean)row.getCellValue(7));
+        assertTrue((Boolean)project.rows.get(1).getCellValue(7));
+
+        assertNull((String)project.rows.get(2).getCellValue(2));
+
+        verify(options, times(1)).get("ignoreLines");
+        verify(options, times(1)).get("headerLines");
+        verify(options, times(1)).get("skipDataLines");
+        verify(options, times(1)).get("limit");
+        verify(options, times(1)).get("storeBlankCellsAsNulls");
+    }
+
+
+}