-
-
Notifications
You must be signed in to change notification settings - Fork 84
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
[vividus] Add INNER_JOIN table transformer
- Loading branch information
1 parent
ae8dc94
commit e6e6f35
Showing
6 changed files
with
392 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
6 changes: 6 additions & 0 deletions
6
vividus-tests/src/main/resources/data/for-inner-join-transformer.table
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,6 @@ | ||
| |column1|joinID|column2|column3| | ||
| |row11 |1 |row21 |row31 | | ||
| |row12 |2 |row22 |row32 | | ||
| |row13 |3 |row23 |row33 | | ||
| |row133 |3 |row233 |row333 | | ||
| |row14 |4 |row24 |row34 | |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
87 changes: 87 additions & 0 deletions
87
vividus/src/main/java/org/vividus/transformer/InnerJoinTableTransformer.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,87 @@ | ||
| /* | ||
| * Copyright 2019-2023 the original author or authors. | ||
| * | ||
| * Licensed 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 | ||
| * | ||
| * https://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.vividus.transformer; | ||
|
|
||
| import static org.apache.commons.lang3.Validate.isTrue; | ||
|
|
||
| import java.util.HashMap; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.Set; | ||
| import java.util.stream.Collectors; | ||
|
|
||
| import org.jbehave.core.model.ExamplesTable; | ||
| import org.jbehave.core.model.ExamplesTable.TableProperties; | ||
| import org.jbehave.core.model.TableParsers; | ||
| import org.vividus.util.ExamplesTableProcessor; | ||
|
|
||
| public class InnerJoinTableTransformer extends AbstractTableLoadingTransformer | ||
| { | ||
| public InnerJoinTableTransformer() | ||
| { | ||
| super(false); | ||
| } | ||
|
|
||
| @Override | ||
| public String transform(String tableAsString, TableParsers tableParsers, TableProperties properties) | ||
| { | ||
| List<ExamplesTable> tables = loadTables(tableAsString, properties); | ||
| isTrue(tables.size() == 2, "Please, specify only two ExamplesTable-s"); | ||
| ExamplesTable leftTable = tables.get(0); | ||
| ExamplesTable rightTable = tables.get(1); | ||
| String leftTableJoinColumn = properties.getMandatoryNonBlankProperty("leftTableJoinColumn", String.class); | ||
| String rightTableJoinColumn = properties.getMandatoryNonBlankProperty("rightTableJoinColumn", String.class); | ||
| isTrue(leftTable.getHeaders().contains(leftTableJoinColumn), | ||
| "The left table doesn't contain the following column: %s", leftTableJoinColumn); | ||
| isTrue(rightTable.getHeaders().contains(rightTableJoinColumn), | ||
| "The right table doesn't contain the following column: %s", rightTableJoinColumn); | ||
| Set<String> repeatingKeys = leftTable.getHeaders().stream() | ||
| .filter(e -> !e.equals(leftTableJoinColumn) && rightTable.getHeaders().contains(e)) | ||
| .collect(Collectors.toSet()); | ||
| isTrue(repeatingKeys.isEmpty(), "Tables must contain different columns (except joint column)," | ||
| + " but found the same columns: %s", repeatingKeys); | ||
|
|
||
| ExamplesTable resultTable = innerJoin(leftTable, rightTable, leftTableJoinColumn, rightTableJoinColumn); | ||
| return resultTable.isEmpty() ? getEmptyTableWithHeaders(tables, properties) : resultTable.asString(); | ||
| } | ||
|
|
||
| private static ExamplesTable innerJoin(ExamplesTable leftTable, ExamplesTable rightTable, | ||
| String leftTableJoinColumn, String rightTableJoinColumn) | ||
| { | ||
| List<Map<String, String>> leftRows = leftTable.getRows(); | ||
| List<Map<String, String>> rightRows = rightTable.getRows(); | ||
| Map<String, List<Map<String, String>>> rightByColumn = rightRows.stream() | ||
| .collect(Collectors.groupingBy(m -> m.get(rightTableJoinColumn))); | ||
| List<Map<String, String>> examplesTableRows = leftRows.stream() | ||
| .filter(row -> rightByColumn.containsKey(row.get(leftTableJoinColumn))) | ||
| .flatMap(leftRow -> rightByColumn.get(leftRow.get(leftTableJoinColumn)).stream() | ||
| .map(rightRow -> { | ||
| Map<String, String> jointRow = new HashMap<>(); | ||
| jointRow.putAll(leftRow); | ||
| jointRow.putAll(rightRow); | ||
| return jointRow; | ||
| })).collect(Collectors.toList()); | ||
| return ExamplesTable.empty().withRows(examplesTableRows); | ||
| } | ||
|
|
||
| private static String getEmptyTableWithHeaders(List<ExamplesTable> tables, TableProperties tableProperties) | ||
| { | ||
| Set<String> headers = tables.stream().map(ExamplesTable::getHeaders) | ||
| .flatMap(List::stream).collect(Collectors.toSet()); | ||
| return ExamplesTableProcessor.buildExamplesTable(headers, List.of(), tableProperties); | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.