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* feat(#3448): Add excel export * Move data download dialog to shared UI module * Fix dependency convergence, improve export of double values * Fix conversion * Fix dependency convergence * Fix test
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124 changes: 124 additions & 0 deletions
124
...src/main/java/org/apache/streampipes/dataexplorer/export/ConfiguredExcelOutputWriter.java
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| /* | ||
| * 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. | ||
| * | ||
| */ | ||
|
|
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| package org.apache.streampipes.dataexplorer.export; | ||
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| import org.apache.streampipes.manager.file.FileManager; | ||
| import org.apache.streampipes.model.datalake.DataLakeMeasure; | ||
| import org.apache.streampipes.model.datalake.param.ProvidedRestQueryParams; | ||
| import org.apache.streampipes.model.datalake.param.SupportedRestQueryParams; | ||
| import org.apache.streampipes.model.file.FileMetadata; | ||
| import org.apache.streampipes.storage.api.CRUDStorage; | ||
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| import org.apache.poi.ss.usermodel.Sheet; | ||
| import org.apache.poi.xssf.streaming.SXSSFWorkbook; | ||
| import org.apache.poi.xssf.usermodel.XSSFWorkbook; | ||
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| import java.io.IOException; | ||
| import java.io.InputStream; | ||
| import java.io.OutputStream; | ||
| import java.nio.file.Files; | ||
| import java.util.List; | ||
| import java.util.Objects; | ||
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| public class ConfiguredExcelOutputWriter extends ConfiguredOutputWriter { | ||
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| private final CRUDStorage<FileMetadata> storage; | ||
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| private SXSSFWorkbook wb; | ||
| private Sheet ws; | ||
| private boolean useTemplate = false; | ||
| private int startRow = 0; | ||
| private String templateId; | ||
| private DataLakeMeasure schema; | ||
| private String headerColumnNameStrategy; | ||
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| public ConfiguredExcelOutputWriter(CRUDStorage<FileMetadata> fileMetadataStorage) { | ||
| this.storage = fileMetadataStorage; | ||
| } | ||
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| @Override | ||
| public void configure(DataLakeMeasure schema, | ||
| ProvidedRestQueryParams params, | ||
| boolean ignoreMissingValues) { | ||
| var qp = params.getProvidedParams(); | ||
| this.schema = schema; | ||
| this.headerColumnNameStrategy = qp.getOrDefault(SupportedRestQueryParams.QP_HEADER_COLUMN_NAME, "key"); | ||
| if (qp.containsKey(SupportedRestQueryParams.QP_XLSX_USE_TEMPLATE)) { | ||
| this.useTemplate = true; | ||
| this.startRow = Integer.parseInt(qp.getOrDefault(SupportedRestQueryParams.QP_XLSX_START_ROW, "0")); | ||
| this.templateId = qp.getOrDefault(SupportedRestQueryParams.QP_XLSX_TEMPLATE_ID, null); | ||
| } | ||
| } | ||
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| @Override | ||
| public void beforeFirstItem(OutputStream outputStream) { | ||
| if (useTemplate && Objects.nonNull(templateId)) { | ||
| var fileMetadata = storage.getElementById(templateId); | ||
| if (fileMetadata != null) { | ||
| var path = new FileManager().getFile(fileMetadata.getFilename()).getAbsoluteFile().toPath(); | ||
| try (InputStream is = Files.newInputStream(path)) { | ||
| XSSFWorkbook templateWorkbook = new XSSFWorkbook(is); | ||
| wb = new SXSSFWorkbook(templateWorkbook); | ||
| ws = wb.getSheetAt(0); | ||
| } catch (IOException e) { | ||
| createNewWorkbook(); | ||
| } | ||
| } | ||
| } else { | ||
| createNewWorkbook(); | ||
| } | ||
| } | ||
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| private void createNewWorkbook() { | ||
| wb = new SXSSFWorkbook(); | ||
| ws = wb.createSheet(); | ||
| } | ||
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| @Override | ||
| public void afterLastItem(OutputStream outputStream) throws IOException { | ||
| wb.write(outputStream); | ||
| wb.close(); | ||
| } | ||
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| @Override | ||
| public void writeItem(OutputStream outputStream, | ||
| List<Object> row, | ||
| List<String> columnNames, boolean firstObject) throws IOException { | ||
| var excelRow = ws.createRow(startRow); | ||
| int columnIndex = 0; | ||
| if (firstObject) { | ||
| for (String column : columnNames) { | ||
| var cell = excelRow.createCell(columnIndex); | ||
| var headerName = getHeaderName(schema, String.valueOf(column), headerColumnNameStrategy); | ||
| cell.setCellValue(headerName); | ||
| columnIndex++; | ||
| } | ||
| startRow++; | ||
| excelRow = ws.createRow(startRow); | ||
| columnIndex = 0; | ||
| } | ||
| for (Object column : row) { | ||
| var cell = excelRow.createCell(columnIndex); | ||
| String entry = ExportUtils.formatValue(column); | ||
| cell.setCellValue(entry); | ||
| columnIndex++; | ||
| } | ||
| startRow++; | ||
| } | ||
| } |
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35 changes: 35 additions & 0 deletions
35
...explorer-export/src/main/java/org/apache/streampipes/dataexplorer/export/ExportUtils.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,35 @@ | ||
| /* | ||
| * 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. | ||
| * | ||
| */ | ||
|
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| package org.apache.streampipes.dataexplorer.export; | ||
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| import java.math.BigDecimal; | ||
| import java.text.DecimalFormat; | ||
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| public class ExportUtils { | ||
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| private static final DecimalFormat df = new DecimalFormat("#"); | ||
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| public static String formatValue(Object value) { | ||
| if (value instanceof Double) { | ||
| return BigDecimal.valueOf((Double) value).toPlainString(); | ||
| } else { | ||
| return String.valueOf(value); | ||
| } | ||
| } | ||
| } |
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