WorksheetManager::__construct() - Code Metrics - Inspection of "XLSX and ODS write optimization" - box/spout - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#763)

unknown

created 2021-03-25 07:44 UTC

WorksheetManager::__construct() A

↳ Parent: WorksheetManager

Complexity

Conditions	1
Paths	1

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	10
CRAP Score	1

Importance

Changes

Metric	Value
dl	0
loc	19
ccs	10
cts	10
cp	1
rs	9.6333
c	0
b	0
f	0
cc	1
nc	1
nop	8
crap	1

How to fix Many Parameters

<?php

namespace Box\Spout\Writer\XLSX\Manager;

use Box\Spout\Common\Entity\Cell;
use Box\Spout\Common\Entity\Row;
use Box\Spout\Common\Entity\Style\Style;
use Box\Spout\Common\Exception\InvalidArgumentException;
use Box\Spout\Common\Exception\IOException;
use Box\Spout\Common\Helper\Escaper\XLSX as XLSXEscaper;
use Box\Spout\Common\Helper\StringHelper;
use Box\Spout\Common\Manager\OptionsManagerInterface;
use Box\Spout\Writer\Common\Creator\InternalEntityFactory;
use Box\Spout\Writer\Common\Entity\Options;
use Box\Spout\Writer\Common\Entity\Worksheet;
use Box\Spout\Writer\Common\Helper\CellHelper;
use Box\Spout\Writer\Common\Manager\RegisteredStyle;
use Box\Spout\Writer\Common\Manager\RowManager;
use Box\Spout\Writer\Common\Manager\Style\StyleMerger;
use Box\Spout\Writer\Common\Manager\WorksheetManagerInterface;
use Box\Spout\Writer\XLSX\Manager\Style\StyleManager;

/**
 * Class WorksheetManager
 * XLSX worksheet manager, providing the interfaces to work with XLSX worksheets.
 */
class WorksheetManager implements WorksheetManagerInterface
{
    /**
     * Maximum number of characters a cell can contain
     * @see https://support.office.com/en-us/article/Excel-specifications-and-limits-16c69c74-3d6a-4aaf-ba35-e6eb276e8eaa [Excel 2007]
     * @see https://support.office.com/en-us/article/Excel-specifications-and-limits-1672b34d-7043-467e-8e27-269d656771c3 [Excel 2010]
     * @see https://support.office.com/en-us/article/Excel-specifications-and-limits-ca36e2dc-1f09-4620-b726-67c00b05040f [Excel 2013/2016]
     */
    const MAX_CHARACTERS_PER_CELL = 32767;

    const SHEET_XML_FILE_HEADER = <<<'EOD'
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<worksheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships">
EOD;

    /** @var bool Whether inline or shared strings should be used */
    protected $shouldUseInlineStrings;

    /** @var RowManager Manages rows */
    private $rowManager;

    /** @var StyleManager Manages styles */
    private $styleManager;

    /** @var StyleMerger Helper to merge styles together */
    private $styleMerger;

    /** @var SharedStringsManager Helper to write shared strings */
    private $sharedStringsManager;

    /** @var XLSXEscaper Strings escaper */
    private $stringsEscaper;

    /** @var StringHelper String helper */
    private $stringHelper;

    /** @var InternalEntityFactory Factory to create entities */
    private $entityFactory;

    /**
     * WorksheetManager constructor.
     *
     * @param OptionsManagerInterface $optionsManager
     * @param RowManager $rowManager
     * @param StyleManager $styleManager
     * @param StyleMerger $styleMerger
     * @param SharedStringsManager $sharedStringsManager
     * @param XLSXEscaper $stringsEscaper
     * @param StringHelper $stringHelper
     * @param InternalEntityFactory $entityFactory
     */
    public function __construct(
        OptionsManagerInterface $optionsManager,
        RowManager $rowManager,
        StyleManager $styleManager,
        StyleMerger $styleMerger,
        SharedStringsManager $sharedStringsManager,
        XLSXEscaper $stringsEscaper,
        StringHelper $stringHelper,
        InternalEntityFactory $entityFactory
    ) {
        $this->shouldUseInlineStrings = $optionsManager->getOption(Options::SHOULD_USE_INLINE_STRINGS);
        $this->rowManager = $rowManager;
        $this->styleManager = $styleManager;
        $this->styleMerger = $styleMerger;
        $this->sharedStringsManager = $sharedStringsManager;
        $this->stringsEscaper = $stringsEscaper;
        $this->stringHelper = $stringHelper;
        $this->entityFactory = $entityFactory;
    }

    /**
     * @return SharedStringsManager
     */
    public function getSharedStringsManager()
    {
        return $this->sharedStringsManager;
    }

    /**
     * {@inheritdoc}
     */
    public function startSheet(Worksheet $worksheet)
    {
        $sheetFilePointer = \fopen($worksheet->getFilePath(), 'w');
        $this->throwIfSheetFilePointerIsNotAvailable($sheetFilePointer);

        $worksheet->setFilePointer($sheetFilePointer);

        \fwrite($sheetFilePointer, self::SHEET_XML_FILE_HEADER);
        \fwrite($sheetFilePointer, '<sheetData>');
    }

    /**
     * Checks if the sheet has been sucessfully created. Throws an exception if not.
     *
     * @param bool|resource $sheetFilePointer Pointer to the sheet data file or FALSE if unable to open the file
     * @throws IOException If the sheet data file cannot be opened for writing
     * @return void
     */
    private function throwIfSheetFilePointerIsNotAvailable($sheetFilePointer)
    {
        if (!$sheetFilePointer) {
            throw new IOException('Unable to open sheet for writing.');
        }
    }

    /**
     * {@inheritdoc}
     */
    public function addRow(Worksheet $worksheet, Row $row)
    {
        if (!$this->rowManager->isEmpty($row)) {
            $this->addNonEmptyRow($worksheet, $row);
        }

        $worksheet->setLastWrittenRowIndex($worksheet->getLastWrittenRowIndex() + 1);
    }

    /**
     * Adds non empty row to the worksheet.
     *
     * @param Worksheet $worksheet The worksheet to add the row to
     * @param Row $row The row to be written
     * @throws IOException If the data cannot be written
     * @throws InvalidArgumentException If a cell value's type is not supported
     * @return void
     */
    private function addNonEmptyRow(Worksheet $worksheet, Row $row)
    {
        $rowStyle = $row->getStyle();
        $rowIndexOneBased = $worksheet->getLastWrittenRowIndex() + 1;
        $numCells = $row->getNumCells();

        $rowXML = '<row r="' . $rowIndexOneBased . '" spans="1:' . $numCells . '">';

        foreach ($row->getCells() as $columnIndexZeroBased => $cell) {
            $registeredStyle = $this->applyStyleAndRegister($cell, $rowStyle);
            $cellStyle = $registeredStyle->getStyle();
            if ($registeredStyle->isRowStyle()) {
                $rowStyle = $cellStyle;
            }
            $rowXML .= $this->getCellXML($rowIndexOneBased, $columnIndexZeroBased, $cell, $cellStyle->getId());
        }

        $rowXML .= '</row>';

        $wasWriteSuccessful = \fwrite($worksheet->getFilePointer(), $rowXML);
        if ($wasWriteSuccessful === false) {
            throw new IOException("Unable to write data in {$worksheet->getFilePath()}");
        }
    }

    /**
     * Applies styles to the given style, merging the cell's style with its row's style
     *
     * @param Cell  $cell
     * @param Style $rowStyle
     *
     * @throws InvalidArgumentException If the given value cannot be processed
     * @return RegisteredStyle
     */
    private function applyStyleAndRegister(Cell $cell, Style $rowStyle) : RegisteredStyle
    {
        $isRowStyle = false;
        if ($cell->getStyle()->isEmpty()) {
            $cell->setStyle($rowStyle);

            $managedStyle = $this->styleManager->applyExtraStylesIfNeeded($cell);

            if ($managedStyle->isUpdated()) {
                $registeredStyle = $this->styleManager->registerStyle($managedStyle->getStyle());
            } else {
                $registeredStyle = $this->styleManager->registerStyle($rowStyle);
                $isRowStyle = true;
            }
        } else {
            $mergedCellAndRowStyle = $this->styleMerger->merge($cell->getStyle(), $rowStyle);
            $cell->setStyle($mergedCellAndRowStyle);

            $managedStyle = $this->styleManager->applyExtraStylesIfNeeded($cell);

            if ($managedStyle->isUpdated()) {
                $newCellStyle = $managedStyle->getStyle();
            } else {
                $newCellStyle = $mergedCellAndRowStyle;
            }

            $registeredStyle = $this->styleManager->registerStyle($newCellStyle);
        }

        return new RegisteredStyle($registeredStyle, $isRowStyle);
    }

    /**
     * Builds and returns xml for a single cell.
     *
     * @param int  $rowIndexOneBased
     * @param int  $columnIndexZeroBased
     * @param Cell $cell
     * @param int  $styleId
     *
     * @throws InvalidArgumentException If the given value cannot be processed
     * @return string
     */
    private function getCellXML($rowIndexOneBased, $columnIndexZeroBased, Cell $cell, $styleId)
    {
        $columnLetters = CellHelper::getColumnLettersFromColumnIndex($columnIndexZeroBased);
        $cellXML = '<c r="' . $columnLetters . $rowIndexOneBased . '"';
        $cellXML .= ' s="' . $styleId . '"';

        if ($cell->isString()) {
            $cellXML .= $this->getCellXMLFragmentForNonEmptyString($cell->getValue());
        } elseif ($cell->isBoolean()) {
            $cellXML .= ' t="b"><v>' . (int) ($cell->getValue()) . '</v></c>';
        } elseif ($cell->isNumeric()) {
            $cellXML .= '><v>' . $cell->getValue() . '</v></c>';
        } elseif ($cell->isError() && is_string($cell->getValueEvenIfError())) {
            // only writes the error value if it's a string
            $cellXML .= ' t="e"><v>' . $cell->getValueEvenIfError() . '</v></c>';
        } elseif ($cell->isEmpty()) {
            if ($this->styleManager->shouldApplyStyleOnEmptyCell($styleId)) {
                $cellXML .= '/>';
            } else {
                // don't write empty cells that do no need styling
                // NOTE: not appending to $cellXML is the right behavior!!
                $cellXML = '';
            }
        } else {
            throw new InvalidArgumentException('Trying to add a value with an unsupported type: ' . \gettype($cell->getValue()));
        }

        return $cellXML;
    }

    /**
     * Returns the XML fragment for a cell containing a non empty string
     *
     * @param string $cellValue The cell value
     * @throws InvalidArgumentException If the string exceeds the maximum number of characters allowed per cell
     * @return string The XML fragment representing the cell
     */
    private function getCellXMLFragmentForNonEmptyString($cellValue)
    {
        if ($this->stringHelper->getStringLength($cellValue) > self::MAX_CHARACTERS_PER_CELL) {
            throw new InvalidArgumentException('Trying to add a value that exceeds the maximum number of characters allowed in a cell (32,767)');
        }

        if ($this->shouldUseInlineStrings) {
            $cellXMLFragment = ' t="inlineStr"><is><t>' . $this->stringsEscaper->escape($cellValue) . '</t></is></c>';
        } else {
            $sharedStringId = $this->sharedStringsManager->writeString($cellValue);
            $cellXMLFragment = ' t="s"><v>' . $sharedStringId . '</v></c>';
        }

        return $cellXMLFragment;
    }

    /**
     * {@inheritdoc}
     */
    public function close(Worksheet $worksheet)
    {
        $worksheetFilePointer = $worksheet->getFilePointer();

        if (!\is_resource($worksheetFilePointer)) {
            return;
        }

        \fwrite($worksheetFilePointer, '</sheetData>');
        \fwrite($worksheetFilePointer, '</worksheet>');
        \fclose($worksheetFilePointer);
    }
}


1		<?php
2
3		namespace Box\Spout\Writer\XLSX\Manager;
4
5		use Box\Spout\Common\Entity\Cell;
6		use Box\Spout\Common\Entity\Row;
7		use Box\Spout\Common\Entity\Style\Style;
8		use Box\Spout\Common\Exception\InvalidArgumentException;
9		use Box\Spout\Common\Exception\IOException;
10		use Box\Spout\Common\Helper\Escaper\XLSX as XLSXEscaper;
11		use Box\Spout\Common\Helper\StringHelper;
12		use Box\Spout\Common\Manager\OptionsManagerInterface;
13		use Box\Spout\Writer\Common\Creator\InternalEntityFactory;
14		use Box\Spout\Writer\Common\Entity\Options;
15		use Box\Spout\Writer\Common\Entity\Worksheet;
16		use Box\Spout\Writer\Common\Helper\CellHelper;
17		use Box\Spout\Writer\Common\Manager\RegisteredStyle;
18		use Box\Spout\Writer\Common\Manager\RowManager;
19		use Box\Spout\Writer\Common\Manager\Style\StyleMerger;
20		use Box\Spout\Writer\Common\Manager\WorksheetManagerInterface;
21		use Box\Spout\Writer\XLSX\Manager\Style\StyleManager;
22
23		/**
24		* Class WorksheetManager
25		* XLSX worksheet manager, providing the interfaces to work with XLSX worksheets.
26		*/
27		class WorksheetManager implements WorksheetManagerInterface
28		{
29		/**
30		* Maximum number of characters a cell can contain
31		* @see https://support.office.com/en-us/article/Excel-specifications-and-limits-16c69c74-3d6a-4aaf-ba35-e6eb276e8eaa [Excel 2007]
32		* @see https://support.office.com/en-us/article/Excel-specifications-and-limits-1672b34d-7043-467e-8e27-269d656771c3 [Excel 2010]
33		* @see https://support.office.com/en-us/article/Excel-specifications-and-limits-ca36e2dc-1f09-4620-b726-67c00b05040f [Excel 2013/2016]
34		*/
35		const MAX_CHARACTERS_PER_CELL = 32767;
36
37		const SHEET_XML_FILE_HEADER = <<<'EOD'
38		<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
39		<worksheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships">
40		EOD;
41
42		/** @var bool Whether inline or shared strings should be used */
43		protected $shouldUseInlineStrings;
44
45		/** @var RowManager Manages rows */
46		private $rowManager;
47
48		/** @var StyleManager Manages styles */
49		private $styleManager;
50
51		/** @var StyleMerger Helper to merge styles together */
52		private $styleMerger;
53
54		/** @var SharedStringsManager Helper to write shared strings */
55		private $sharedStringsManager;
56
57		/** @var XLSXEscaper Strings escaper */
58		private $stringsEscaper;
59
60		/** @var StringHelper String helper */
61		private $stringHelper;
62
63		/** @var InternalEntityFactory Factory to create entities */
64		private $entityFactory;
65
66		/**
67		* WorksheetManager constructor.
68		*
69		* @param OptionsManagerInterface $optionsManager
70		* @param RowManager $rowManager
71		* @param StyleManager $styleManager
72		* @param StyleMerger $styleMerger
73		* @param SharedStringsManager $sharedStringsManager
74		* @param XLSXEscaper $stringsEscaper
75		* @param StringHelper $stringHelper
76		* @param InternalEntityFactory $entityFactory
77		*/
78	42	public function __construct(
79		OptionsManagerInterface $optionsManager,
80		RowManager $rowManager,
81		StyleManager $styleManager,
82		StyleMerger $styleMerger,
83		SharedStringsManager $sharedStringsManager,
84		XLSXEscaper $stringsEscaper,
85		StringHelper $stringHelper,
86		InternalEntityFactory $entityFactory
87		) {
88	42	$this->shouldUseInlineStrings = $optionsManager->getOption(Options::SHOULD_USE_INLINE_STRINGS);
89	42	$this->rowManager = $rowManager;
90	42	$this->styleManager = $styleManager;
91	42	$this->styleMerger = $styleMerger;
92	42	$this->sharedStringsManager = $sharedStringsManager;
93	42	$this->stringsEscaper = $stringsEscaper;
94	42	$this->stringHelper = $stringHelper;
95	42	$this->entityFactory = $entityFactory;
96	42	}
97
98		/**
99		* @return SharedStringsManager
100		*/
101	38	public function getSharedStringsManager()
102		{
103	38	return $this->sharedStringsManager;
104		}
105
106		/**
107		* {@inheritdoc}
108		*/
109	42	public function startSheet(Worksheet $worksheet)
110		{
111	42	$sheetFilePointer = \fopen($worksheet->getFilePath(), 'w');
112	42	$this->throwIfSheetFilePointerIsNotAvailable($sheetFilePointer);
113
114	42	$worksheet->setFilePointer($sheetFilePointer);
115
116	42	\fwrite($sheetFilePointer, self::SHEET_XML_FILE_HEADER);
117	42	\fwrite($sheetFilePointer, '<sheetData>');
118	42	}
119
120		/**
121		* Checks if the sheet has been sucessfully created. Throws an exception if not.
122		*
123		* @param bool\|resource $sheetFilePointer Pointer to the sheet data file or FALSE if unable to open the file
124		* @throws IOException If the sheet data file cannot be opened for writing
125		* @return void
126		*/
127	42	private function throwIfSheetFilePointerIsNotAvailable($sheetFilePointer)
128		{
129	42	if (!$sheetFilePointer) {
130		throw new IOException('Unable to open sheet for writing.');
131		}
132	42	}
133
134		/**
135		* {@inheritdoc}
136		*/
137	35	public function addRow(Worksheet $worksheet, Row $row)
138		{
139	35	if (!$this->rowManager->isEmpty($row)) {
140	35	$this->addNonEmptyRow($worksheet, $row);
141		}
142
143	34	$worksheet->setLastWrittenRowIndex($worksheet->getLastWrittenRowIndex() + 1);
144	34	}
145
146		/**
147		* Adds non empty row to the worksheet.
148		*
149		* @param Worksheet $worksheet The worksheet to add the row to
150		* @param Row $row The row to be written
151		* @throws IOException If the data cannot be written
152		* @throws InvalidArgumentException If a cell value's type is not supported
153		* @return void
154		*/
155	35	private function addNonEmptyRow(Worksheet $worksheet, Row $row)
156		{
157	35	$rowStyle = $row->getStyle();
158	35	$rowIndexOneBased = $worksheet->getLastWrittenRowIndex() + 1;
159	35	$numCells = $row->getNumCells();
160
161	35	$rowXML = '<row r="' . $rowIndexOneBased . '" spans="1:' . $numCells . '">';
162
163	35	foreach ($row->getCells() as $columnIndexZeroBased => $cell) {
164	35	$registeredStyle = $this->applyStyleAndRegister($cell, $rowStyle);
165	35	$cellStyle = $registeredStyle->getStyle();
166	35	if ($registeredStyle->isRowStyle()) {
167	34	$rowStyle = $cellStyle;
168		}
169	35	$rowXML .= $this->getCellXML($rowIndexOneBased, $columnIndexZeroBased, $cell, $cellStyle->getId());
170		}
171
172	34	$rowXML .= '</row>';
173
174	34	$wasWriteSuccessful = \fwrite($worksheet->getFilePointer(), $rowXML);
175	34	if ($wasWriteSuccessful === false) {
176		throw new IOException("Unable to write data in {$worksheet->getFilePath()}");
177		}
178	34	}
179
180		/**
181		* Applies styles to the given style, merging the cell's style with its row's style
182		*
183		* @param Cell $cell
184		* @param Style $rowStyle
185		*
186		* @throws InvalidArgumentException If the given value cannot be processed
187		* @return RegisteredStyle
188		*/
189	35	private function applyStyleAndRegister(Cell $cell, Style $rowStyle) : RegisteredStyle
190		{
191	35	$isRowStyle = false;
192	35	if ($cell->getStyle()->isEmpty()) {
193	34	$cell->setStyle($rowStyle);
194
195	34	$managedStyle = $this->styleManager->applyExtraStylesIfNeeded($cell);
196
197	34	if ($managedStyle->isUpdated()) {
198	1	$registeredStyle = $this->styleManager->registerStyle($managedStyle->getStyle());
199		} else {
200	34	$registeredStyle = $this->styleManager->registerStyle($rowStyle);
201	34	$isRowStyle = true;
202		}
203		} else {
204	3	$mergedCellAndRowStyle = $this->styleMerger->merge($cell->getStyle(), $rowStyle);
205	3	$cell->setStyle($mergedCellAndRowStyle);
206
207	3	$managedStyle = $this->styleManager->applyExtraStylesIfNeeded($cell);
208
209	3	if ($managedStyle->isUpdated()) {
210		$newCellStyle = $managedStyle->getStyle();
211		} else {
212	3	$newCellStyle = $mergedCellAndRowStyle;
213		}
214
215	3	$registeredStyle = $this->styleManager->registerStyle($newCellStyle);
216		}
217
218	35	return new RegisteredStyle($registeredStyle, $isRowStyle);
219		}
220
221		/**
222		* Builds and returns xml for a single cell.
223		*
224		* @param int $rowIndexOneBased
225		* @param int $columnIndexZeroBased
226		* @param Cell $cell
227		* @param int $styleId
228		*
229		* @throws InvalidArgumentException If the given value cannot be processed
230		* @return string
231		*/
232	35	private function getCellXML($rowIndexOneBased, $columnIndexZeroBased, Cell $cell, $styleId)
233		{
234	35	$columnLetters = CellHelper::getColumnLettersFromColumnIndex($columnIndexZeroBased);
235	35	$cellXML = '<c r="' . $columnLetters . $rowIndexOneBased . '"';
236	35	$cellXML .= ' s="' . $styleId . '"';
237
238	35	if ($cell->isString()) {
239	32	$cellXML .= $this->getCellXMLFragmentForNonEmptyString($cell->getValue());
240	6	} elseif ($cell->isBoolean()) {
241	1	$cellXML .= ' t="b"><v>' . (int) ($cell->getValue()) . '</v></c>';
242	6	} elseif ($cell->isNumeric()) {
243	2	$cellXML .= '><v>' . $cell->getValue() . '</v></c>';
244	5	} elseif ($cell->isError() && is_string($cell->getValueEvenIfError())) {
245		// only writes the error value if it's a string
246	1	$cellXML .= ' t="e"><v>' . $cell->getValueEvenIfError() . '</v></c>';
247	4	} elseif ($cell->isEmpty()) {
248	2	if ($this->styleManager->shouldApplyStyleOnEmptyCell($styleId)) {
249	1	$cellXML .= '/>';
250		} else {
251		// don't write empty cells that do no need styling
252		// NOTE: not appending to $cellXML is the right behavior!!
253	2	$cellXML = '';
254		}
255		} else {
256	2	throw new InvalidArgumentException('Trying to add a value with an unsupported type: ' . \gettype($cell->getValue()));
257		}
258
259	34	return $cellXML;
260		}
261
262		/**
263		* Returns the XML fragment for a cell containing a non empty string
264		*
265		* @param string $cellValue The cell value
266		* @throws InvalidArgumentException If the string exceeds the maximum number of characters allowed per cell
267		* @return string The XML fragment representing the cell
268		*/
269	32	private function getCellXMLFragmentForNonEmptyString($cellValue)
270		{
271	32	if ($this->stringHelper->getStringLength($cellValue) > self::MAX_CHARACTERS_PER_CELL) {
272		throw new InvalidArgumentException('Trying to add a value that exceeds the maximum number of characters allowed in a cell (32,767)');
273		}
274
275	32	if ($this->shouldUseInlineStrings) {
276	29	$cellXMLFragment = ' t="inlineStr"><is><t>' . $this->stringsEscaper->escape($cellValue) . '</t></is></c>';
277		} else {
278	3	$sharedStringId = $this->sharedStringsManager->writeString($cellValue);
279	3	$cellXMLFragment = ' t="s"><v>' . $sharedStringId . '</v></c>';
280		}
281
282	32	return $cellXMLFragment;
283		}
284
285		/**
286		* {@inheritdoc}
287		*/
288	38	public function close(Worksheet $worksheet)
289		{
290	38	$worksheetFilePointer = $worksheet->getFilePointer();
291
292	38	if (!\is_resource($worksheetFilePointer)) {
293		return;
294		}
295
296	38	\fwrite($worksheetFilePointer, '</sheetData>');
297	38	\fwrite($worksheetFilePointer, '</worksheet>');
298	38	\fclose($worksheetFilePointer);
299	38	}
300		}
301

box / spout

Pull Request — master (#763)

WorksheetManager::__construct() A

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