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## org.apache.poi.hssf.record.aggregates
Class SharedValueManager

    java.lang.Object
      org.apache.poi.hssf.record.aggregates.SharedValueManager

    public final class SharedValueManager

extends java.lang.Object

Manages various auxiliary records while constructing a `RowRecordsAggregate`:

- `SharedFormulaRecord`s
- `ArrayRecord`s
- `TableRecord`s

Author:
  Josh Micich, Vladimirs Abramovs(Vladimirs.Abramovs at exigenservices.com) - handling of ArrayRecords

Method Summary
`void` | `addArrayRecord(ArrayRecord ar)` Add specified Array Record.
`static SharedValueManager` | `create(SharedFormulaRecord[] sharedFormulaRecords, CellReference[] firstCells, ArrayRecord[] arrayRecords, TableRecord[] tableRecords)`
`static SharedValueManager` | `createEmpty()`
`ArrayRecord` | `getArrayRecord(int firstRow, int firstColumn)`
`SharedValueRecordBase` | `getRecordForFirstCell(FormulaRecordAggregate agg)` Gets the `SharedValueRecordBase` record if it should be encoded immediately after the formula record contained in the specified `FormulaRecordAggregate` agg.
`SharedFormulaRecord` | `linkSharedFormulaRecord(CellReference firstCell, FormulaRecordAggregate agg)`
`CellRangeAddress8Bit` | `removeArrayFormula(int rowIndex, int columnIndex)` Removes the `ArrayRecord` for the cell group containing the specified cell.
`void` | `unlink(SharedFormulaRecord sharedFormulaRecord)` Converts all `FormulaRecord`s handled by `sharedFormulaRecord` to plain unshared formulas

Methods inherited from class java.lang.Object
`equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Method Detail

### createEmpty

    public static SharedValueManager createEmpty()

  Returns:
    a new empty `SharedValueManager`.

### create

    public static SharedValueManager create(SharedFormulaRecord[] sharedFormulaRecords,
                                            CellReference[] firstCells,
                                            ArrayRecord[] arrayRecords,
                                            TableRecord[] tableRecords)

### linkSharedFormulaRecord

    public SharedFormulaRecord linkSharedFormulaRecord(CellReference firstCell,
                                                       FormulaRecordAggregate agg)

  Parameters:
    `firstCell` - as extracted from the `ExpPtg` from the cell's formula.
  Returns:
    never `null`

### getRecordForFirstCell

    public SharedValueRecordBase getRecordForFirstCell(FormulaRecordAggregate agg)

  Gets the `SharedValueRecordBase` record if it should be encoded immediately after the formula record contained in the specified `FormulaRecordAggregate` agg. Note - the shared value record always appears after the first formula record in the group. For arrays and tables the first formula is always the in the top left cell. However, since shared formula groups can be sparse and/or overlap, the first formula may not actually be in the top left cell.

  Returns:
    the SHRFMLA, TABLE or ARRAY record for the formula cell, if it is the first cell of a table or array region. `null` if the formula cell is not shared/array/table, or if the specified formula is not the the first in the group.

### unlink

    public void unlink(SharedFormulaRecord sharedFormulaRecord)

  Converts all `FormulaRecord`s handled by `sharedFormulaRecord` to plain unshared formulas

### addArrayRecord

    public void addArrayRecord(ArrayRecord ar)

  Add specified Array Record.

### removeArrayFormula

    public CellRangeAddress8Bit removeArrayFormula(int rowIndex,
                                                   int columnIndex)

  Removes the `ArrayRecord` for the cell group containing the specified cell. The caller should clear (set blank) all cells in the returned range.

  Returns:
    the range of the array formula which was just removed. Never `null`.

### getArrayRecord

    public ArrayRecord getArrayRecord(int firstRow,
                                      int firstColumn)

  Returns:
    the shared ArrayRecord identified by (firstRow, firstColumn). never `null`.

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