H2 Database Engine 2.3.232 · org.h2.mvstore.db.ValueDataType

Modifier and Type	Class and Description
public static class	ValueDataType.Factory

Field Summary

Modifier and Type	Field and Description
private static final byte	ARRAY
private static final byte	BIGINT
private static final byte	BIGINT_0_7
private static final byte	BIGINT_NEG
private static final int	BINARY
private static final byte	BLOB
private static final byte	BOOLEAN_FALSE
private static final byte	BOOLEAN_TRUE
private static final byte	CHAR
private static final byte	CLOB
pack-priv final CompareMode	compareMode
private static final byte	DATE
private static final int	DECFLOAT
private static final byte	DOUBLE
private static final byte	DOUBLE_0_1
private static final byte	ENUM
private static final ValueDataType.Factory	FACTORY
private static final byte	GEOMETRY
pack-priv final DataHandler	handler
private static final byte	INT_0_15
private static final byte	INT_NEG
private static final byte	INTEGER
private static final byte	INTERVAL
private static final byte	JAVA_OBJECT
private static final int	JSON
private static final byte	NULL
private static final byte	NUMERIC
private static final byte	NUMERIC_0_1
private static final byte	NUMERIC_SMALL
private static final byte	NUMERIC_SMALL_0
pack-priv final CastDataProvider	provider
private static final byte	REAL
private static final byte	REAL_0_1
private static final byte	ROW
private RowFactory	rowFactory
private static final byte	SMALLINT
pack-priv final int[]	sortTypes
private static final byte	TIME
private static final int	TIME_TZ
private static final byte	TIMESTAMP
private static final int	TIMESTAMP_TZ
private static final byte	TIMESTAMP_TZ_OLD
private static final byte	TINYINT
private static final byte	UUID
private static final byte	VARBINARY
private static final int	VARBINARY_0_31
private static final byte	VARCHAR
private static final byte	VARCHAR_0_31
private static final byte	VARCHAR_IGNORECASE

Constructor Summary

Access	Constructor and Description
public	ValueDataType()
public	ValueDataType(Database database, int[] sortTypes)
public	ValueDataType(CastDataProvider provider, CompareMode compareMode, DataHandler handler, int[] sortTypes)

Method Summary

Modifier and Type	Method and Description
public int	compare(Value the first key a, Value the second key b) Overrides org.h2.mvstore.type.BasicDataType.compare. Implements org.h2.mvstore.type.DataType.compare. Compare two keys.
private int	compare(SearchRow the first key a, SearchRow the second key b) Overrides org.h2.mvstore.type.BasicDataType.compare. Implements org.h2.mvstore.type.DataType.compare. Compare two keys.
public int	Returns: 0 if equal, -1 if first value is smaller for ascending or larger for descending sort type, 1 otherwise compareValues(Value the first value a, Value the second value b, int the sorting type sortType) Compares the specified values.
public Value[]	createStorage(int number of values to hold size) Implements org.h2.mvstore.type.DataType.createStorage. Create storage object of array type to hold values
public boolean	equals(Object the reference object with which to compare. obj) Overrides org.h2.mvstore.type.BasicDataType.equals. Implements java.util.Comparator.equals. Indicates whether some other object is "equal to" this comparator.
public ValueDataType.Factory	getFactory() Implements org.h2.mvstore.type.StatefulDataType.getFactory.
public int	getMemory(Value the object v) Implements abstract org.h2.mvstore.type.BasicDataType.getMemory. Implements org.h2.mvstore.type.DataType.getMemory. Calculates the amount of used memory in bytes.
public RowFactory	getRowFactory()
public int	hashCode() Overrides org.h2.mvstore.type.BasicDataType.hashCode. Returns a hash code value for this object.
public Value	read(ByteBuffer the source buffer buff) Implements abstract org.h2.mvstore.type.BasicDataType.read. Implements org.h2.mvstore.type.DataType.read. Read an object.
private Value[]	readArrayElements(ByteBuffer buff, TypeInfo elementType)
private LobDataDatabase	readLobDataDatabase(ByteBuffer buff)
private static long	readTimestampTime(ByteBuffer buff)
private static int	readTimeZone(ByteBuffer buff)
pack-priv Value	Returns: the value readValue(ByteBuffer the source buffer buff, TypeInfo the data type of value, or `null` columnType) Read a value.
private static byte[]	readVarBytes(ByteBuffer buff)
public void	save(WriteBuffer the target buffer buff, MetaType<Database> the meta type metaType) Implements org.h2.mvstore.type.StatefulDataType.save. Save the state.
public void	setRowFactory(RowFactory rowFactory)
public void	write(WriteBuffer the target buffer buff, Value the value v) Implements abstract org.h2.mvstore.type.BasicDataType.write. Implements org.h2.mvstore.type.DataType.write. Write an object.
private static void	writeBinary(byte type, WriteBuffer buff, Value v)
private static void	writeIntArray(WriteBuffer buff, int[] array)
public static void	writeLong(WriteBuffer the target buffer buff, long the long value x) Writes a long.
private static void	writeString(WriteBuffer buff, String s)
private static void	writeTimestampTime(WriteBuffer buff, long nanos)
private static void	writeTimeZone(WriteBuffer buff, int timeZoneOffset)

Inherited from org.h2.mvstore.type.BasicDataType:: binarySearch cast isMemoryEstimationAllowed read write

Field Detail

ARRAY	back to summary
private static final byte ARRAY

BIGINT	back to summary
private static final byte BIGINT

BIGINT_0_7	back to summary
private static final byte BIGINT_0_7

BIGINT_NEG	back to summary
private static final byte BIGINT_NEG

BINARY	back to summary
private static final int BINARY

BLOB	back to summary
private static final byte BLOB

BOOLEAN_FALSE	back to summary
private static final byte BOOLEAN_FALSE

BOOLEAN_TRUE	back to summary
private static final byte BOOLEAN_TRUE

CHAR	back to summary
private static final byte CHAR

CLOB	back to summary
private static final byte CLOB

compareMode	back to summary
pack-priv final CompareMode compareMode

DATE	back to summary
private static final byte DATE

DECFLOAT	back to summary
private static final int DECFLOAT

DOUBLE	back to summary
private static final byte DOUBLE

DOUBLE_0_1	back to summary
private static final byte DOUBLE_0_1

ENUM	back to summary
private static final byte ENUM

FACTORY	back to summary
private static final ValueDataType.Factory FACTORY

GEOMETRY	back to summary
private static final byte GEOMETRY

handler	back to summary
pack-priv final DataHandler handler

INT_0_15	back to summary
private static final byte INT_0_15

INT_NEG	back to summary
private static final byte INT_NEG

INTEGER	back to summary
private static final byte INTEGER

INTERVAL	back to summary
private static final byte INTERVAL

JAVA_OBJECT	back to summary
private static final byte JAVA_OBJECT

JSON	back to summary
private static final int JSON

NULL	back to summary
private static final byte NULL

NUMERIC	back to summary
private static final byte NUMERIC

NUMERIC_0_1	back to summary
private static final byte NUMERIC_0_1

NUMERIC_SMALL	back to summary
private static final byte NUMERIC_SMALL

NUMERIC_SMALL_0	back to summary
private static final byte NUMERIC_SMALL_0

provider	back to summary
pack-priv final CastDataProvider provider

REAL	back to summary
private static final byte REAL

REAL_0_1	back to summary
private static final byte REAL_0_1

ROW	back to summary
private static final byte ROW

rowFactory	back to summary
private RowFactory rowFactory

SMALLINT	back to summary
private static final byte SMALLINT

sortTypes	back to summary
pack-priv final int[] sortTypes

TIME	back to summary
private static final byte TIME

TIME_TZ	back to summary
private static final int TIME_TZ

TIMESTAMP	back to summary
private static final byte TIMESTAMP

TIMESTAMP_TZ	back to summary
private static final int TIMESTAMP_TZ

TIMESTAMP_TZ_OLD	back to summary
private static final byte TIMESTAMP_TZ_OLD

TINYINT	back to summary
private static final byte TINYINT

UUID	back to summary
private static final byte UUID

VARBINARY	back to summary
private static final byte VARBINARY

VARBINARY_0_31	back to summary
private static final int VARBINARY_0_31

VARCHAR	back to summary
private static final byte VARCHAR

VARCHAR_0_31	back to summary
private static final byte VARCHAR_0_31

VARCHAR_IGNORECASE	back to summary
private static final byte VARCHAR_IGNORECASE

Constructor Detail

ValueDataType	back to summary
public ValueDataType()

ValueDataType	back to summary
public ValueDataType(Database database, int[] sortTypes)

ValueDataType	back to summary
public ValueDataType(CastDataProvider provider, CompareMode compareMode, DataHandler handler, int[] sortTypes)

Method Detail

compare

back to summary

public int compare(Value a, Value b)

Overrides org.h2.mvstore.type.BasicDataType.compare.

Implements org.h2.mvstore.type.DataType.compare.

Doc from org.h2.mvstore.type.DataType.compare.

Compare two keys.

Parameters

a:Value: the first key
b:Value: the second key

Returns:int

-1 if the first key is smaller, 1 if larger, and 0 if equal

Annotations

@Override

compare

back to summary

private int compare(SearchRow a, SearchRow b)

Overrides org.h2.mvstore.type.BasicDataType.compare.

Implements org.h2.mvstore.type.DataType.compare.

Doc from org.h2.mvstore.type.DataType.compare.

Compare two keys.

Parameters

a:SearchRow: the first key
b:SearchRow: the second key

Returns:int

-1 if the first key is smaller, 1 if larger, and 0 if equal

compareValues

back to summary

public int compareValues(Value a, Value b, int sortType)

Compares the specified values.

Parameters

a:Value: the first value
b:Value: the second value
sortType:int: the sorting type

Returns:int

0 if equal, -1 if first value is smaller for ascending or larger for descending sort type, 1 otherwise

createStorage

back to summary

public Value[] createStorage(int size)

Implements org.h2.mvstore.type.DataType.createStorage.

Doc from org.h2.mvstore.type.DataType.createStorage.

Create storage object of array type to hold values

Parameters

size:int: number of values to hold

Returns:Value[]

storage object

Annotations

@Override

equals back to summary

public boolean equals(Object obj)

Overrides org.h2.mvstore.type.BasicDataType.equals.

Implements java.util.Comparator.equals.

Doc from java.util.Comparator.equals.

Indicates whether some other object is "equal to" this comparator. This method must obey the general contract of Object#equals(Object). Additionally, this method can return true only if the specified object is also a comparator and it imposes the same ordering as this comparator. Thus, comp1.equals(comp2) implies that signum(comp1.compare(o1, o2))==signum(comp2.compare(o1, o2)) for every object reference o1 and o2.

Note that it is always safe not to override Object.equals(Object). However, overriding this method may, in some cases, improve performance by allowing programs to determine that two distinct comparators impose the same order.

Parameters

obj:Object: the reference object with which to compare.

Returns:boolean

true only if the specified object is also a comparator and it imposes the same ordering as this comparator.

Annotations

@Override

getFactory

back to summary

public ValueDataType.Factory getFactory()

Implements org.h2.mvstore.type.StatefulDataType.getFactory.

Annotations

@Override

getMemory

back to summary

public int getMemory(Value v)

Implements abstract org.h2.mvstore.type.BasicDataType.getMemory.

Implements org.h2.mvstore.type.DataType.getMemory.

Doc from org.h2.mvstore.type.DataType.getMemory.

Calculates the amount of used memory in bytes.

Parameters

v:Value: the object

Returns:int

the used memory

Annotations

@Override

getRowFactory	back to summary
public RowFactory getRowFactory()

hashCode back to summary

public int hashCode()

Overrides org.h2.mvstore.type.BasicDataType.hashCode.

Doc from java.lang.Object.hashCode.

Returns a hash code value for this object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.

The general contract of hashCode is:

Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.

Returns:int

a hash code value for this object

Annotations

@Override

read

back to summary

public Value read(ByteBuffer buff)

Implements abstract org.h2.mvstore.type.BasicDataType.read.

Implements org.h2.mvstore.type.DataType.read.

Doc from org.h2.mvstore.type.DataType.read.

Read an object.

Parameters

buff:ByteBuffer: the source buffer

Returns:Value

the object

Annotations

@Override

readArrayElements	back to summary
private Value[] readArrayElements(ByteBuffer buff, TypeInfo elementType)

readLobDataDatabase	back to summary
private LobDataDatabase readLobDataDatabase(ByteBuffer buff)

readTimestampTime	back to summary
private static long readTimestampTime(ByteBuffer buff)

readTimeZone	back to summary
private static int readTimeZone(ByteBuffer buff)

readValue back to summary

pack-priv Value readValue(ByteBuffer buff, TypeInfo columnType)

Read a value.

Parameters

buff:ByteBuffer: the source buffer
columnType:TypeInfo: the data type of value, or null

Returns:Value

the value

readVarBytes	back to summary
private static byte[] readVarBytes(ByteBuffer buff)

save

back to summary

public void save(WriteBuffer buff, MetaType<Database> metaType)

Implements org.h2.mvstore.type.StatefulDataType.save.

Doc from org.h2.mvstore.type.StatefulDataType.save.

Save the state.

Parameters

buff:WriteBuffer: the target buffer
metaType:MetaType<Database>: the meta type

Annotations

@Override

setRowFactory	back to summary
public void setRowFactory(RowFactory rowFactory)

write

back to summary

public void write(WriteBuffer buff, Value v)

Implements abstract org.h2.mvstore.type.BasicDataType.write.

Implements org.h2.mvstore.type.DataType.write.

Doc from org.h2.mvstore.type.DataType.write.

Write an object.

Parameters

buff:WriteBuffer: the target buffer
v:Value: the value

Annotations

@Override

writeBinary	back to summary
private static void writeBinary(byte type, WriteBuffer buff, Value v)

writeIntArray	back to summary
private static void writeIntArray(WriteBuffer buff, int[] array)

writeLong

back to summary

public static void writeLong(WriteBuffer buff, long x)

Writes a long.

Parameters

buff:WriteBuffer: the target buffer
x:long: the long value

writeString	back to summary
private static void writeString(WriteBuffer buff, String s)

writeTimestampTime	back to summary
private static void writeTimestampTime(WriteBuffer buff, long nanos)

writeTimeZone	back to summary
private static void writeTimeZone(WriteBuffer buff, int timeZoneOffset)

Modifier and Type	Method and Description
public DataType<?>	create(ByteBuffer the buffer the source buffer buff, MetaType<Database> the type metaType, Database the database database) Implements org.h2.mvstore.type.StatefulDataType.Factory.create. Reads the data type.
private static int[]	readIntArray(ByteBuffer buff)

public final Class ValueDataType

Nested and Inner Type Summary

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

public final Class ValueDataType.Factory

Constructor Summary

Method Summary

Constructor Detail

Method Detail