org.apache.poi.hssf.record.aggregates

Class RecordAggregate

java.lang.Object

org.apache.poi.hssf.record.RecordBase

org.apache.poi.hssf.record.aggregates.RecordAggregate

Direct Known Subclasses:

CFRecordsAggregate, ChartSubstreamRecordAggregate, ColumnInfoRecordsAggregate, ConditionalFormattingTable, CustomViewSettingsRecordAggregate, DataValidityTable, FormulaRecordAggregate, MergedCellsTable, PageSettingsBlock, RowRecordsAggregate, WorksheetProtectionBlock

public abstract class RecordAggregate
extends RecordBase

RecordAggregates are groups of of BIFF Records that are typically stored together and/or updated together. Workbook / Sheet records are typically stored in a sequential list, which does not provide much structure to coordinate updates.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	RecordAggregate.PositionTrackingVisitor A wrapper for RecordAggregate.RecordVisitor which accumulates the sizes of all records visited.
static interface	RecordAggregate.RecordVisitor

Constructor Summary

Constructors

Constructor and Description
RecordAggregate()

Method Summary

Modifier and Type	Method and Description
int	getRecordSize() gives the current serialized size of the record.
int	serialize(int offset, byte[] data) called by the class that is responsible for writing this sucker.
abstract void	visitContainedRecords(RecordAggregate.RecordVisitor rv) Visit each of the atomic BIFF records contained in this RecordAggregate in the order that they should be written to file.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RecordAggregate

public RecordAggregate()

Method Detail

visitContainedRecords

public abstract void visitContainedRecords(RecordAggregate.RecordVisitor rv)

Visit each of the atomic BIFF records contained in this RecordAggregate in the order that they should be written to file. Implementors may or may not return the actual Records being used to manage POI's internal implementation. Callers should not assume either way, and therefore only attempt to modify those Records after cloning

Parameters:

rv - The visitor to use for callbacks while walking this object

serialize

public final int serialize(int offset,
                           byte[] data)

Description copied from class: RecordBase

called by the class that is responsible for writing this sucker. Subclasses should implement this so that their data is passed back in a byte array.

Specified by:

serialize in class RecordBase

Parameters:

offset - to begin writing at

data - byte array containing instance data

Returns:

number of bytes written

getRecordSize

public int getRecordSize()

Description copied from class: RecordBase

gives the current serialized size of the record. Should include the sid and reclength (4 bytes).

Specified by:

getRecordSize in class RecordBase

Returns:

the record size