Data (The Adobe AEM Quickstart and Web Application.)

java.lang.Object
- com.day.cq.reporting.Data

```
public abstract class Data
extends java.lang.Object
```
This class represents the data of a report.

Instances of this class may be used concurrently (through caches), so the following policy must be followed:
- During the creation of a report, the class must only be used from a single thread.
- After the data has been completely retrieved (and before adding it to a cache), it must be "compacted" (using compact()).
- After being compacted, the data object is considered immutable. All methods that change state are then considered to throw IllegalStateExceptions.

Constructor Summary

Constructors
Constructor and Description

Data(Report report)

Constructors
Constructor and Description
`Data(Report report)`

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`addColumnTotal(Column col, CellValue total)` Adds the specified column total.
`void`	`addRow(DataRow rowToAdd)` Adds the specified row of data.
`void`	`compact()` This class must called after the data has been calculated completely, no further changes have to be made and the
`abstract ChartData`	`createChartData(int limit)` Creates a suitable `ChartData` object for this report data.
`java.util.Iterator<Column>`	`getColumns()` Gets an iterator over the columns of the report data.
`CellValue`	`getColumnTotal(Column col)` Gets the total value of the specified column.
`int`	`getReportingVersion()` Gets the interal reporting version the report was created for.
`DataRow`	`getRowAt(int rowIndex)` Gets a row by its index.
`int`	`getRowCnt()` Gets the number of rows.
`boolean`	`hasGroupedColumns()` Determines if the report data has of grouped columns.
`void`	`postProcess(Processor processor)` Use this method to process each data row with the specified `Processor`.
`void`	`postProcess(Processor[] processors)` Use this method to process each data row with the specified `Processor`s.
`void`	`sortByColumn(Column sortingColumn, Sorting.Direction sortingDirection)` Sorts the result data by the specified column.
`abstract void`	`writeDataJSON(JSONWriter writer, java.util.Locale locale, java.lang.Integer start, java.lang.Integer limit)` Writes the result to the specified `JSONWriter`.
`abstract void`	`writeSortInfoJSON(JSONWriter writer)` Writes the sort information for the report to the specified `JSONWriter`.
`abstract void`	`writeTypesJSON(JSONWriter writer)` Writes the type definition for each column to the specified `JSONWriter`.

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

- Constructor Detail
  - Data
```
public Data(Report report)
```
- Method Detail
  - hasGroupedColumns
```
public boolean hasGroupedColumns()
```
    Determines if the report data has of grouped columns.
    
    Returns:
    
    true if the report contains data from grouped columns
  - addRow
```
public void addRow(DataRow rowToAdd)
```
    Adds the specified row of data.
    
    Parameters:
    
    rowToAdd - The row to add
  - getRowAt
```
public DataRow getRowAt(int rowIndex)
```
    Gets a row by its index.
    
    Parameters:
    
    rowIndex - The index
    
    Returns:
    
    The row
  - getRowCnt
```
public int getRowCnt()
```
    Gets the number of rows.
    
    Returns:
    
    Number of rows
  - getColumns
```
public java.util.Iterator<Column> getColumns()
```
    Gets an iterator over the columns of the report data.
    
    Returns:
    
    The iterator
  - addColumnTotal
```
public void addColumnTotal(Column col,
                           CellValue total)
```
    Adds the specified column total.
    
    Parameters:
    
    col - The column
    
    total - The total value
  - getColumnTotal
```
public CellValue getColumnTotal(Column col)
```
    Gets the total value of the specified column.
    
    Parameters:
    
    col - The (aggregated) column to determine the total value for
    
    Returns:
    
    The total value of the specified column
  - compact
```
public void compact()
```
    This class must called after the data has been calculated completely, no further changes have to be made and the
  - postProcess
```
public void postProcess(Processor[] processors)
```
    Use this method to process each data row with the specified Processors.
    
    Parameters:
    
    processors - The array of processing modules to execute. Note that if one of the modules declares a row to be deleted, the modules specified at higher array indices will not be executed on that row.
  - sortByColumn
```
public void sortByColumn(Column sortingColumn,
                         Sorting.Direction sortingDirection)
```
    Sorts the result data by the specified column.
    
    Parameters:
    
    sortingColumn - The column to sort by
    
    sortingDirection - The sorting direction
  - postProcess
```
public void postProcess(Processor processor)
```
    Use this method to process each data row with the specified Processor.
    
    Parameters:
    
    processor - The processing module
  - getReportingVersion
```
public int getReportingVersion()
```
    Gets the interal reporting version the report was created for.
    
    This can be used to ensure backwards compatibility with reports that were created for different CQ versions if some default behaviour had to be changed.
    
    Returns:
    
    The version of reporting the report has been created for (0 - CQ 5.4; 1 - CQ 5.5)
    
    Since:
    
    5.5
  - createChartData
```
public abstract ChartData createChartData(int limit)
```
    Creates a suitable ChartData object for this report data.
    
    Parameters:
    
    limit - Number of data to be returned for the chart
    
    Returns:
    
    The corresponding chart data
  - writeTypesJSON
```
public abstract void writeTypesJSON(JSONWriter writer)
                             throws JSONException
```
    Writes the type definition for each column to the specified JSONWriter.
    
    Parameters:
    
    writer - The writer to stream the data to
    
    Throws:
    
    JSONException - if writing the type definition has failed
  - writeSortInfoJSON
```
public abstract void writeSortInfoJSON(JSONWriter writer)
                                throws JSONException
```
    Writes the sort information for the report to the specified JSONWriter.
    
    Parameters:
    
    writer - The writer to stream the data to
    
    Throws:
    
    JSONException - if writing the sort info has failed
  - writeDataJSON
```
public abstract void writeDataJSON(JSONWriter writer,
                                   java.util.Locale locale,
                                   java.lang.Integer start,
                                   java.lang.Integer limit)
                            throws JSONException
```
    Writes the result to the specified JSONWriter.
    
    Parameters:
    
    writer - The writer to stream the data to
    
    locale - The locale to be used for formatting data
    
    start - The first record to be streamed; null to stream from the beginning
    
    limit - The maximum number of records to be streamed; null to stream to the end
    
    Throws:
    
    JSONException - if writing the result has failed

Class Data

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

Data

Method Detail

hasGroupedColumns

addRow

getRowAt

getRowCnt

getColumns

addColumnTotal

getColumnTotal

compact

postProcess

sortByColumn

postProcess

getReportingVersion

createChartData

writeTypesJSON

writeSortInfoJSON

writeDataJSON