Package org.h2.value

Class ValueClob

java.lang.Object

org.h2.value.VersionedValue<Value>

org.h2.value.Value

org.h2.value.ValueLob

org.h2.value.ValueClob

All Implemented Interfaces:

HasSQL, Typed

public final class ValueClob
extends ValueLob

Implementation of the CHARACTER LARGE OBJECT data type.

Field Summary

Fields inherited from class org.h2.value.ValueLob

BLOCK_COMPARISON_SIZE, charLength, lobData, octetLength

Fields inherited from class org.h2.value.Value

ARRAY, ASSIGN_TO, BIGINT, BINARY, BLOB, BOOLEAN, CAST_TO, CHAR, CLOB, CONVERT_TO, DATE, DECFLOAT, DOUBLE, EMPTY_VALUES, ENUM, GEOMETRY, GROUP_BINARY_STRING, GROUP_BOOLEAN, GROUP_CHARACTER_STRING, GROUP_COLLECTION, GROUP_DATETIME, GROUP_INTERVAL_DT, GROUP_INTERVAL_YM, GROUP_NULL, GROUP_NUMERIC, GROUP_OTHER, GROUPS, 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, MAX_LONG_DECIMAL, 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	Description
ValueClob(LobData lobData, long octetLength, long charLength)

Method Summary

Modifier and Type	Method	Description
long	charLength()	Returns length of this value in characters.
private static int	compare(ValueClob v1, ValueClob v2)	Compares two CLOB values directly.
int	compareTypeSafe(Value v, CompareMode mode, CastDataProvider provider)	Compare this value against another value given that the values are of the same data type.
(package private) ValueClob	convertPrecision(long precision)	Convert the precision to the requested value.
ValueLob	copy(DataHandler database, int tableId)	Copy a large value, to be used in the given table.
static ValueClob	createSmall(byte[] data)	Creates a small CLOB value that can be stored in the row directly.
static ValueClob	createSmall(byte[] data, long charLength)	Creates a small CLOB value that can be stored in the row directly.
static ValueClob	createSmall(java.lang.String string)	Creates a small CLOB value that can be stored in the row directly.
static ValueClob	createTempClob(java.io.Reader in, long length, DataHandler handler)	Create a temporary CLOB value from a stream.
private static ValueClob	createTemporary(DataHandler handler, java.io.Reader in, long remaining)	Create a CLOB in a temporary file.
(package private) byte[]	getBytesInternal()
java.io.InputStream	getInputStream()
java.io.InputStream	getInputStream(long oneBasedOffset, long length)	Get the input stream
java.io.Reader	getReader(long oneBasedOffset, long length)	Get the reader
java.lang.StringBuilder	getSQL(java.lang.StringBuilder builder, int sqlFlags)	Appends the SQL statement of this object to the specified builder.
java.lang.String	getString()	Get the value as a string.
int	getValueType()	Get the value type.
long	octetLength()	Returns length of this value in bytes.

Methods inherited from class org.h2.value.ValueLob

copyToResult, createTempLobFileName, equals, getBinaryTooLong, getBufferSize, getBytes, getBytesNoCopy, getLobData, getMemory, getReader, getStringTooLong, getType, hashCode, isLinkedToTable, rangeInputStream, rangeReader, readBytes, readString, remove

Methods inherited from class org.h2.value.Value

add, cache, castTo, clearCache, compareTo, compareWithNull, containsNull, convertForAssignTo, convertTo, convertTo, convertTo, convertTo, convertTo, convertToAnyArray, convertToAnyRow, convertToBigint, convertToBoolean, convertToChar, convertToDate, convertToDouble, convertToEnum, convertToGeometry, convertToInt, convertToInt, convertToJavaObject, convertToReal, convertToSmallint, convertToTinyint, convertToUuid, divide, getBigDecimal, getBoolean, getByte, getDataConversionError, getDataConversionError, getDouble, getFloat, getHigherOrder, getHigherOrderKnown, getInt, getLong, getShort, getSignum, getTypeName, getUnsupportedExceptionForOperation, getValueTooLongException, isFalse, isTrue, modulus, multiply, negate, rangeCheck, 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

ValueClob

public ValueClob(LobData lobData,
                 long octetLength,
                 long charLength)

Method Detail

createSmall

public static ValueClob createSmall(byte[] data)

Creates a small CLOB value that can be stored in the row directly.

Parameters:

data - the data in UTF-8 encoding

Returns:

the CLOB

createSmall

public static ValueClob createSmall(byte[] data,
                                    long charLength)

Creates a small CLOB value that can be stored in the row directly.

Parameters:

data - the data in UTF-8 encoding

charLength - the count of characters, must be exactly the same as count of characters in the data

Returns:

the CLOB

createSmall

public static ValueClob createSmall(java.lang.String string)

Creates a small CLOB value that can be stored in the row directly.

Parameters:

string - the string with value

Returns:

the CLOB

createTempClob

public static ValueClob createTempClob(java.io.Reader in,
                                       long length,
                                       DataHandler handler)

Create a temporary CLOB value from a stream.

Parameters:

in - the reader

length - the number of characters to read, or -1 for no limit

handler - the data handler

Returns:

the lob value

createTemporary

private static ValueClob createTemporary(DataHandler handler,
                                         java.io.Reader in,
                                         long remaining)
                                  throws java.io.IOException

Create a CLOB in a temporary file.

Throws:

java.io.IOException

getValueType

public int getValueType()

Description copied from class: Value

Get the value type.

Specified by:

getValueType in class Value

Returns:

the value type

getString

public java.lang.String getString()

Description copied from class: Value

Get the value as a string.

Specified by:

getString in class Value

Returns:

the string

getBytesInternal

byte[] getBytesInternal()

Specified by:

getBytesInternal in class ValueLob

getInputStream

public java.io.InputStream getInputStream()

Overrides:

getInputStream in class Value

getInputStream

public java.io.InputStream getInputStream(long oneBasedOffset,
                                          long length)

Description copied from class: Value

Get the input stream

Overrides:

getInputStream in class Value

Parameters:

oneBasedOffset - the offset (1 means no offset)

length - the requested length

Returns:

the new input stream

getReader

public java.io.Reader getReader(long oneBasedOffset,
                                long length)

Description copied from class: Value

Get the reader

Overrides:

getReader in class Value

Parameters:

oneBasedOffset - the offset (1 means no offset)

length - the requested length

Returns:

the new reader

compareTypeSafe

public int compareTypeSafe(Value v,
                           CompareMode mode,
                           CastDataProvider provider)

Description copied from class: Value

Compare this value against another value given that the values are of the same data type.

Specified by:

compareTypeSafe in class Value

Parameters:

v - the other value

mode - the compare mode

provider - the cast information provider

Returns:

0 if both values are equal, -1 if the other value is smaller, and 1 otherwise

compare

private static int compare(ValueClob v1,
                           ValueClob v2)

Compares two CLOB values directly.

Parameters:

v1 - first CLOB value

v2 - second CLOB value

Returns:

result of comparison

getSQL

public java.lang.StringBuilder getSQL(java.lang.StringBuilder builder,
                                      int sqlFlags)

Description copied from interface: HasSQL

Appends the SQL statement of this object to the specified builder.

Parameters:

builder - string builder

sqlFlags - formatting flags

Returns:

the specified string builder

convertPrecision

ValueClob convertPrecision(long precision)

Convert the precision to the requested value.

Parameters:

precision - the new precision

Returns:

the truncated or this value

copy

public ValueLob copy(DataHandler database,
                     int tableId)

Description copied from class: ValueLob

Copy a large value, to be used in the given table. For values that are kept fully in memory this method has no effect.

Specified by:

copy in class ValueLob

Parameters:

database - the data handler

tableId - the table where this object is used

Returns:

the new value or itself

charLength

public long charLength()

Description copied from class: Value

Returns length of this value in characters.

Overrides:

charLength in class Value

Returns:

length of this value in characters

octetLength

public long octetLength()

Description copied from class: Value

Returns length of this value in bytes.

Overrides:

octetLength in class Value

Returns:

length of this value in bytes