org.h2.result

Class Row

java.lang.Object

org.h2.value.VersionedValue<Value>

org.h2.value.Value

org.h2.result.SearchRow

org.h2.result.Row

All Implemented Interfaces:

HasSQL, Typed

Direct Known Subclasses:

DefaultRow

public abstract class Row
extends SearchRow

Represents a row in a table.

Field Summary

Fields inherited from class org.h2.result.SearchRow

key, MATCH_ALL_ROW_KEY, MEMORY_CALCULATE, 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
Row()

Method Summary

Modifier and Type	Method and Description
static Row	get(Value[] data, int memory) Creates a new row.
static Row	get(Value[] data, int memory, long key) Creates a new row with the specified key.
abstract Value[]	getValueList() Get values.
boolean	hasSameValues(Row other) Check whether values of this row are equal to values of other row.
boolean	hasSharedData(Row other) Check whether this row and the specified row share the same underlying data with values.

Methods inherited from class org.h2.result.SearchRow

compareTypeSafe, copyFrom, equals, getColumnCount, getKey, getMemory, getSQL, getString, getType, getValue, getValueType, hashCode, isNull, setKey, setValue

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, toString

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

Constructor Detail

Row

public Row()

Method Detail

get

public static Row get(Value[] data,
                      int memory)

Creates a new row.

Parameters:

data - values of columns, or null

memory - used memory

Returns:

the allocated row

get

public static Row get(Value[] data,
                      int memory,
                      long key)

Creates a new row with the specified key.

Parameters:

data - values of columns, or null

memory - used memory

key - the key

Returns:

the allocated row

getValueList

public abstract Value[] getValueList()

Get values.

Returns:

values

hasSameValues

public boolean hasSameValues(Row other)

Check whether values of this row are equal to values of other row.

Parameters:

other - the other row

Returns:

true if values are equal, false otherwise

hasSharedData

public boolean hasSharedData(Row other)

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.

Parameters:

other - the other row

Returns:

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