Add more file types #3956

plugins/tech/parquet/src/main/java/org/apache/hop/ui/hopgui/perspective/explorer/file/ParquetFileType.java

@@ -0,0 +1,128 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package org.apache.hop.ui.hopgui.perspective.explorer.file;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.Properties;
+import org.apache.commons.vfs2.FileName;
+import org.apache.commons.vfs2.FileObject;
+import org.apache.hop.core.exception.HopException;
+import org.apache.hop.core.file.IHasFilename;
+import org.apache.hop.core.util.Utils;
+import org.apache.hop.core.variables.IVariables;
+import org.apache.hop.core.vfs.HopVfs;
+import org.apache.hop.ui.hopgui.HopGui;
+import org.apache.hop.ui.hopgui.context.IGuiContextHandler;
+import org.apache.hop.ui.hopgui.file.HopFileTypePlugin;
+import org.apache.hop.ui.hopgui.file.IHopFileType;
+import org.apache.hop.ui.hopgui.file.IHopFileTypeHandler;
+import org.apache.hop.ui.hopgui.file.empty.EmptyHopFileTypeHandler;
+
+@HopFileTypePlugin(
+    id = "ParquetFileType",
+    name = "Parquet File Type",
+    description = "Apache Parquet file handling in the explorer perspective",
+    image = "parquet.svg")
+public class ParquetFileType implements IHopFileType {
+
+  private static final String[] EXTENSIONS = new String[] {"*.parquet"};
+  private static final String[] FILTER_EXTENSIONS = new String[] {"*.parquet"};
+  private static final String[] FILTER_NAMES = new String[] {"Parquet files"};
+
+  @Override
+  public String getName() {
+    return "Parquet";
+  }
+
+  @Override
+  public String getDefaultFileExtension() {
+    return "parquet";
+  }
+
+  @Override
+  public String[] getFilterExtensions() {
+    return FILTER_EXTENSIONS;
+  }
+
+  @Override
+  public String[] getFilterNames() {
+    return FILTER_NAMES;
+  }
+
+  @Override
+  public Properties getCapabilities() {
+    return new Properties();
+  }
+
+  @Override
+  public boolean hasCapability(String capability) {
+    return false;
+  }
+
+  @Override
+  public IHopFileTypeHandler openFile(HopGui hopGui, String filename, IVariables variables)
+      throws HopException {
+    return new EmptyHopFileTypeHandler();
+  }
+
+  @Override
+  public IHopFileTypeHandler newFile(HopGui hopGui, IVariables variables) throws HopException {
+    return new EmptyHopFileTypeHandler();
+  }
+
+  @Override
+  public boolean isHandledBy(String filename, boolean checkContent) throws HopException {
+    try {
+      FileObject fileObject = HopVfs.getFileObject(filename);
+      FileName fileName = fileObject.getName();
+      String fileExtension = fileName.getExtension().toLowerCase();
+
+      // No extension
+      if (Utils.isEmpty(fileExtension)) return false;
+
+      // Verify the extension
+      //
+      for (String typeExtension : EXTENSIONS) {
+        if (typeExtension.toLowerCase().endsWith(fileExtension)) {
+          return true;
+        }
+      }
+      return false;
+    } catch (Exception e) {
+      throw new HopException(
+          "Unable to verify file handling of file '" + filename + "' by extension", e);
+    }
+  }
+
+  @Override
+  public boolean supportsFile(IHasFilename metaObject) {
+    return false;
+  }
+
+  @Override
+  public List<IGuiContextHandler> getContextHandlers() {
+    return Collections.emptyList();
+  }
+
+  @Override
+  public String getFileTypeImage() {
+    return getClass().getAnnotation(HopFileTypePlugin.class).image();
+  }
+}

plugins/transforms/excel/src/main/java/org/apache/hop/ui/hopgui/perspective/explorer/file/ExcelFileType.java

@@ -0,0 +1,128 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package org.apache.hop.ui.hopgui.perspective.explorer.file;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.Properties;
+import org.apache.commons.vfs2.FileName;
+import org.apache.commons.vfs2.FileObject;
+import org.apache.hop.core.exception.HopException;
+import org.apache.hop.core.file.IHasFilename;
+import org.apache.hop.core.util.Utils;
+import org.apache.hop.core.variables.IVariables;
+import org.apache.hop.core.vfs.HopVfs;
+import org.apache.hop.ui.hopgui.HopGui;
+import org.apache.hop.ui.hopgui.context.IGuiContextHandler;
+import org.apache.hop.ui.hopgui.file.HopFileTypePlugin;
+import org.apache.hop.ui.hopgui.file.IHopFileType;
+import org.apache.hop.ui.hopgui.file.IHopFileTypeHandler;
+import org.apache.hop.ui.hopgui.file.empty.EmptyHopFileTypeHandler;
+
+@HopFileTypePlugin(
+    id = "ExcelFileType",
+    name = "Excel File Type",
+    description = "Excel file handling in the explorer perspective",
+    image = "excel.svg")
+public class ExcelFileType implements IHopFileType {
+
+  private static final String[] EXTENSIONS = new String[] {"*.xls", "*.xlsx"};
+  private static final String[] FILTER_EXTENSIONS = new String[] {"*.xls;*.xlsx"};
+  private static final String[] FILTER_NAMES = new String[] {"Excel files"};
+
+  @Override
+  public String getName() {
+    return "Excel";
+  }
+
+  @Override
+  public String getDefaultFileExtension() {
+    return "xlsx";
+  }
+
+  @Override
+  public String[] getFilterExtensions() {
+    return FILTER_EXTENSIONS;
+  }
+
+  @Override
+  public String[] getFilterNames() {
+    return FILTER_NAMES;
+  }
+
+  @Override
+  public Properties getCapabilities() {
+    return new Properties();
+  }
+
+  @Override
+  public boolean hasCapability(String capability) {
+    return false;
+  }
+
+  @Override
+  public IHopFileTypeHandler openFile(HopGui hopGui, String filename, IVariables variables)
+      throws HopException {
+    return new EmptyHopFileTypeHandler();
+  }
+
+  @Override
+  public IHopFileTypeHandler newFile(HopGui hopGui, IVariables variables) throws HopException {
+    return new EmptyHopFileTypeHandler();
+  }
+
+  @Override
+  public boolean isHandledBy(String filename, boolean checkContent) throws HopException {
+    try {
+      FileObject fileObject = HopVfs.getFileObject(filename);
+      FileName fileName = fileObject.getName();
+      String fileExtension = fileName.getExtension().toLowerCase();
+
+      // No extension
+      if (Utils.isEmpty(fileExtension)) return false;
+
+      // Verify the extension
+      //
+      for (String typeExtension : EXTENSIONS) {
+        if (typeExtension.toLowerCase().endsWith(fileExtension)) {
+          return true;
+        }
+      }
+      return false;
+    } catch (Exception e) {
+      throw new HopException(
+          "Unable to verify file handling of file '" + filename + "' by extension", e);
+    }
+  }
+
+  @Override
+  public boolean supportsFile(IHasFilename metaObject) {
+    return false;
+  }
+
+  @Override
+  public List<IGuiContextHandler> getContextHandlers() {
+    return Collections.emptyList();
+  }
+
+  @Override
+  public String getFileTypeImage() {
+    return getClass().getAnnotation(HopFileTypePlugin.class).image();
+  }
+}

plugins/transforms/textfile/src/main/java/org/apache/hop/pipeline/transforms/types/CsvExplorerFileType.java

@@ -32,8 +32,8 @@
 
 @HopFileTypePlugin(
     id = "CsvExplorerFileType",
-    name = "JSON File Type",
-    description = "JSON file handling in the explorer perspective",
+    name = "CSV File Type",
+    description = "CSV file handling in the explorer perspective",
     image = "textfile.svg")
 public class CsvExplorerFileType extends BaseTextExplorerFileType<TextExplorerFileTypeHandler>
     implements IExplorerFileType<TextExplorerFileTypeHandler> {