org.h2.result

Class DefaultRow

java.lang.Object

org.h2.value.VersionedValue<Value>

org.h2.value.Value

org.h2.result.SearchRow

org.h2.result.Row

org.h2.result.DefaultRow

All Implemented Interfaces:

HasSQL, Typed

Direct Known Subclasses:

Sparse

public class DefaultRow
extends Row

The default implementation of a row in a table.

Field Summary

Fields

Modifier and Type	Field and Description
protected Value[]	data The values of the row (one entry per column).
static int	MEMORY_CALCULATE The constant that means "memory usage is unknown and needs to be calculated first".

Fields inherited from class org.h2.result.SearchRow

key, MATCH_ALL_ROW_KEY, ROWID_INDEX

Fields inherited from class org.h2.value.Value

ARRAY, BIGINT, BINARY, BLOB, BOOLEAN, CHAR, CLOB, DATE, DECFLOAT, DOUBLE, EMPTY_VALUES, ENUM, GEOMETRY, INTEGER, INTERVAL_DAY, INTERVAL_DAY_TO_HOUR, INTERVAL_DAY_TO_MINUTE, INTERVAL_DAY_TO_SECOND, INTERVAL_HOUR, INTERVAL_HOUR_TO_MINUTE, INTERVAL_HOUR_TO_SECOND, INTERVAL_MINUTE, INTERVAL_MINUTE_TO_SECOND, INTERVAL_MONTH, INTERVAL_SECOND, INTERVAL_YEAR, INTERVAL_YEAR_TO_MONTH, JAVA_OBJECT, JSON, MIN_LONG_DECIMAL, NULL, NUMERIC, REAL, ROW, SMALLINT, TIME, TIME_TZ, TIMESTAMP, TIMESTAMP_TZ, TINYINT, TYPE_COUNT, UNKNOWN, UUID, VARBINARY, VARCHAR, VARCHAR_IGNORECASE

Fields inherited from interface org.h2.util.HasSQL

ADD_PLAN_INFORMATION, DEFAULT_SQL_FLAGS, NO_CASTS, QUOTE_ONLY_WHEN_REQUIRED, REPLACE_LOBS_FOR_TRACE, TRACE_SQL_FLAGS

Constructor Summary

Constructors

Constructor and Description
DefaultRow(Value[] data)
DefaultRow(Value[] data, int memory)

Method Summary

Modifier and Type	Method and Description
protected int	calculateMemory() Calculate the estimated memory used for this row, in bytes.
void	copyFrom(SearchRow source) Copy all relevant values from the source to this row.
int	getColumnCount() Get the column count.
int	getMemory() Get the estimated memory used for this row, in bytes.
Value	getValue(int i) Get the value for the column
Value[]	getValueList() Get values.
boolean	hasSharedData(Row other) Check whether this row and the specified row share the same underlying data with values.
void	setValue(int i, Value v) Set the value for given column
java.lang.String	toString()

Methods inherited from class org.h2.result.Row

get, get, hasSameValues

Methods inherited from class org.h2.result.SearchRow

compareTypeSafe, equals, getKey, getSQL, getString, getType, getValueType, hashCode, isNull, setKey

Methods inherited from class org.h2.value.Value

add, castTo, charLength, clearCache, compareTo, compareWithNull, containsNull, convertForAssignTo, convertTo, convertTo, convertTo, convertTo, convertTo, convertToAnyArray, convertToAnyJson, convertToAnyRow, convertToBigint, convertToBoolean, convertToChar, convertToDate, convertToDouble, convertToEnum, convertToGeometry, convertToInt, convertToInt, convertToJavaObject, convertToReal, convertToSmallint, convertToTinyint, convertToUuid, divide, getBigDecimal, getBoolean, getByte, getBytes, getBytesNoCopy, getDouble, getFloat, getHigherOrder, getInputStream, getInputStream, getInt, getLong, getReader, getReader, getShort, getSignum, getTypeName, getUnsupportedExceptionForOperation, getValueWithFirstNull, isFalse, isTrue, modulus, multiply, negate, octetLength, subtract

Methods inherited from class org.h2.value.VersionedValue

getCommittedValue, getCurrentValue, getOperationId, isCommitted

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.h2.util.HasSQL

getSQL, getTraceSQL

Field Detail

MEMORY_CALCULATE

public static final int MEMORY_CALCULATE

The constant that means "memory usage is unknown and needs to be calculated first".

See Also:

Constant Field Values

data

protected final Value[] data

The values of the row (one entry per column).

Constructor Detail

DefaultRow

public DefaultRow(Value[] data)

DefaultRow

public DefaultRow(Value[] data,
                  int memory)

Method Detail

getValue

public Value getValue(int i)

Description copied from class: SearchRow

Get the value for the column

Specified by:

getValue in class SearchRow

Parameters:

i - the column number (starting with 0)

Returns:

the value

setValue

public void setValue(int i,
                     Value v)

Description copied from class: SearchRow

Set the value for given column

Specified by:

setValue in class SearchRow

Parameters:

i - the column number (starting with 0)

v - the new value

getColumnCount

public int getColumnCount()

Description copied from class: SearchRow

Get the column count.

Specified by:

getColumnCount in class SearchRow

Returns:

the column count

getMemory

public int getMemory()

Description copied from class: SearchRow

Get the estimated memory used for this row, in bytes.

Specified by:

getMemory in class SearchRow

Returns:

the memory

toString

public java.lang.String toString()

Overrides:

toString in class Value

calculateMemory

protected int calculateMemory()

Calculate the estimated memory used for this row, in bytes.

Returns:

the memory

getValueList

public Value[] getValueList()

Description copied from class: Row

Get values.

Specified by:

getValueList in class Row

Returns:

values

hasSharedData

public boolean hasSharedData(Row other)

Description copied from class: Row

Check whether this row and the specified row share the same underlying data with values. This method must return false when values are not equal and may return either true or false when they are equal. This method may be used only for optimizations and should not perform any slow checks, such as equality checks for all pairs of values.

Overrides:

hasSharedData in class Row

Parameters:

other - the other row

Returns:

true if rows share the same underlying data, false otherwise or when unknown

copyFrom

public void copyFrom(SearchRow source)

Description copied from class: SearchRow

Copy all relevant values from the source to this row.

Specified by:

copyFrom in class SearchRow

Parameters:

source - source of column values