com.healthmarketscience.jackcess.impl

Class MemoColumnImpl

java.lang.Object

com.healthmarketscience.jackcess.impl.ColumnImpl

com.healthmarketscience.jackcess.impl.LongValueColumnImpl

com.healthmarketscience.jackcess.impl.MemoColumnImpl

All Implemented Interfaces:

Column, java.lang.Comparable<ColumnImpl>

Direct Known Subclasses:

CalculatedColumnUtil.CalcMemoColImpl

class MemoColumnImpl
extends LongValueColumnImpl

ColumnImpl subclass which is used for Memo data types.

Nested Class Summary

Nested classes/interfaces inherited from class com.healthmarketscience.jackcess.impl.ColumnImpl

ColumnImpl.AutoNumberGenerator, ColumnImpl.InitArgs, ColumnImpl.SortOrder

Field Summary

Fields

Modifier and Type	Field and Description
private short	_codePage the code page for a text field (for certain db versions)
private boolean	_compressedUnicode whether or not they are compressed
private boolean	_hyperlink whether or not this is a hyperlink column (only possible for columns of type MEMO)
private ColumnImpl.SortOrder	_sortOrder the collating sort order for a text field
private ColumnImpl	_versionHistoryCol complex column which tracks the version history for this "append only" column

Fields inherited from class com.healthmarketscience.jackcess.impl.ColumnImpl

AUTO_NUMBER_FLAG_MASK, AUTO_NUMBER_GUID_FLAG_MASK, COMPRESSED_UNICODE_EXT_FLAG_MASK, FIXED_LEN_FLAG_MASK, GENERAL_LEGACY_SORT_ORDER, GENERAL_SORT_ORDER, HYPERLINK_FLAG_MASK, INVALID_AUTO_NUMBER, LOG, MILLIS_BETWEEN_EPOCH_AND_1900, NUMERIC_NEGATIVE_BYTE, RETURN_ROW_ID, UNKNOWN_FLAG_MASK

Fields inherited from interface com.healthmarketscience.jackcess.Column

AUTO_NUMBER, KEEP_VALUE

Constructor Summary

Constructors

Constructor and Description
MemoColumnImpl(ColumnImpl.InitArgs args)

Method Summary

Modifier and Type	Method and Description
short	getTextCodePage()
ColumnImpl.SortOrder	getTextSortOrder()
ColumnImpl	getVersionHistoryColumn() Returns the column which tracks the version history for an "append only" column.
boolean	isCompressedUnicode()
boolean	isHyperlink() Returns whether or not this is a hyperlink column (only possible for columns of type MEMO).
void	setVersionHistoryColumn(ColumnImpl versionHistoryCol)

Methods inherited from class com.healthmarketscience.jackcess.impl.LongValueColumnImpl

getMaxLengthInUnits, getOwnedPageCount, postTableLoadInit, read, readLongValue, setUsageMaps, writeLongValue, writeRealData

Methods inherited from class com.healthmarketscience.jackcess.impl.ColumnImpl

booleanToInteger, compareTo, countVariableLength, create, decodeTextValue, decodeUncompressedText, encodeTextValue, encodeUncompressedText, fromDateDouble, fromLocalDateDouble, getAutoNumberGenerator, getCalendar, getCharset, getColumnIndex, getColumnNumber, getColumnValidator, getComplexInfo, getDatabase, getDisplayIndex, getFixedDataOffset, getFormat, getLength, getLengthInUnits, getName, getOriginalDataType, getPageChannel, getPrecision, getProperties, getRowValue, getRowValue, getScale, getSQLType, getTable, getType, getVarLenTableIndex, isAppendOnly, isAutoNumber, isCalculated, isGUIDValue, isImmutableValue, isRawData, isVariableLength, rawDataWrapper, read, readCodePage, readExtraFlags, readFromNullMask, readSortOrder, setColumnIndex, setColumnValidator, setRowValue, setRowValue, storeInNullMask, toBigDecimal, toBigDecimal, toBooleanValue, toByteArray, toCharSequence, toDateDouble, toInternalValue, toLocalDateDouble, toString, toUnscaledByteArray, validate, withErrorContext, write, write, writeDefinitions, writeFixedLengthField, writeFixedLengthField, writeToNullMask

Methods inherited from class java.lang.Object

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

Field Detail

_compressedUnicode

private final boolean _compressedUnicode

whether or not they are compressed

_sortOrder

private final ColumnImpl.SortOrder _sortOrder

the collating sort order for a text field

_codePage

private final short _codePage

the code page for a text field (for certain db versions)

_versionHistoryCol

private ColumnImpl _versionHistoryCol

complex column which tracks the version history for this "append only" column

_hyperlink

private boolean _hyperlink

whether or not this is a hyperlink column (only possible for columns of type MEMO)

Constructor Detail

MemoColumnImpl

MemoColumnImpl(ColumnImpl.InitArgs args)
        throws java.io.IOException

Throws:

java.io.IOException

Method Detail

isCompressedUnicode

public boolean isCompressedUnicode()

Specified by:

isCompressedUnicode in interface Column

Overrides:

isCompressedUnicode in class ColumnImpl

getTextCodePage

public short getTextCodePage()

Overrides:

getTextCodePage in class ColumnImpl

getTextSortOrder

public ColumnImpl.SortOrder getTextSortOrder()

Overrides:

getTextSortOrder in class ColumnImpl

getVersionHistoryColumn

public ColumnImpl getVersionHistoryColumn()

Description copied from interface: Column

Returns the column which tracks the version history for an "append only" column.

Specified by:

getVersionHistoryColumn in interface Column

Overrides:

getVersionHistoryColumn in class ColumnImpl

setVersionHistoryColumn

public void setVersionHistoryColumn(ColumnImpl versionHistoryCol)

Overrides:

setVersionHistoryColumn in class ColumnImpl

isHyperlink

public boolean isHyperlink()

Description copied from interface: Column

Returns whether or not this is a hyperlink column (only possible for columns of type MEMO).

Specified by:

isHyperlink in interface Column

Overrides:

isHyperlink in class ColumnImpl