Class DataValueFactoryImpl

java.lang.Object

org.apache.derby.iapi.types.DataValueFactoryImpl

All Implemented Interfaces:

ModuleControl, DataValueFactory

public final class DataValueFactoryImpl
extends Object
implements DataValueFactory, ModuleControl

Core implementation of DataValueFactory.

See Also:

• DataValueFactory

Field Summary

Fields

Modifier and Type	Field	Description
private RuleBasedCollator	collatorForCharacterTypes
private Locale	databaseLocale
private LocaleFinder	localeFinder

Constructor Summary

Constructors

Constructor	Description
DataValueFactoryImpl()

Method Summary

Modifier and Type	Method	Description
void	boot(boolean create, Properties properties)	Boot this module with the given properties.
BitDataValue	getBitDataValue(byte[] value)	Get a SQL bit with the given value.
BitDataValue	getBitDataValue(byte[] value, BitDataValue previous)
BitDataValue	getBlobDataValue(byte[] value, BitDataValue previous)	Get a SQL Blob with the given value.
BitDataValue	getBlobDataValue(Blob value, BitDataValue previous)	Get a SQL Blob with the given value.
RuleBasedCollator	getCharacterCollator(int collationType)	Return the RuleBasedCollator depending on the collation type.
StringDataValue	getCharDataValue(String value)	Get a new SQLChar object to represent a SQL CHAR (UCS_BASIC) with the given value.
StringDataValue	getCharDataValue(String value, StringDataValue previous)	Get a SQLChar object to represent a SQL CHAR (UCS_BASIC with the given value.
StringDataValue	getCharDataValue(String value, StringDataValue previous, int collationType)	Return a StringDataValue to represent a SQL CHAR with the given collation re-using previous if not null.
StringDataValue	getClobDataValue(String value, StringDataValue previous)	Get a SQLClob object to represent a SQL CLOB (UCS_BASIC) with the given value.
StringDataValue	getClobDataValue(String value, StringDataValue previous, int collationType)	Return a StringDataValue to represent a SQL CLOB with the given collation re-using previous if not null.
StringDataValue	getClobDataValue(Clob value, StringDataValue previous)	Get a SQLClob object to represent a SQL CLOB (UCS_BASIC) with the given value.
StringDataValue	getClobDataValue(Clob value, StringDataValue previous, int collationType)	Get a StringDataValue to represent a SQL CLOB with the passed in collationType.
(package private) static Context	getContext(String contextID)	Privileged lookup of a Context.
BooleanDataValue	getDataValue(boolean value, BooleanDataValue previous)	Get a SQL boolean with the given value.
NumberDataValue	getDataValue(byte value, NumberDataValue previous)	Get a SQL TINYINT with the given value.
NumberDataValue	getDataValue(char value, NumberDataValue previous)	Get a SQL int with a char value.
NumberDataValue	getDataValue(double value, NumberDataValue previous)	Get a SQL double precision with the given value.
NumberDataValue	getDataValue(float value, NumberDataValue previous)	Get a SQL real with the given value.
NumberDataValue	getDataValue(int value, NumberDataValue previous)	Get a SQL int with the given value.
NumberDataValue	getDataValue(long value, NumberDataValue previous)	Get a SQL bigint with the given value.
NumberDataValue	getDataValue(short value, NumberDataValue previous)	Get a SQL SMALLINT with the given value.
BooleanDataValue	getDataValue(Boolean value, BooleanDataValue previous)	Get a SQL boolean with the given value.
NumberDataValue	getDataValue(Byte value, NumberDataValue previous)	Get a SQL TINYINT with the given value.
NumberDataValue	getDataValue(Double value, NumberDataValue previous)	Get a SQL double precision with the given value.
NumberDataValue	getDataValue(Float value, NumberDataValue previous)	Get a SQL real with the given value.
NumberDataValue	getDataValue(Integer value, NumberDataValue previous)	Get a SQL int with the given value.
NumberDataValue	getDataValue(Long value, NumberDataValue previous)	Get a SQL bigint with the given value.
UserDataValue	getDataValue(Object value, UserDataValue previous)	Get a User-defined data value with the given value and type name.
NumberDataValue	getDataValue(Short value, NumberDataValue previous)	Get a SQL smallint with the given value.
DateTimeDataValue	getDataValue(Date value, DateTimeDataValue previous)	Get a SQL date with the given value.
DateTimeDataValue	getDataValue(Time value, DateTimeDataValue previous)	Get a SQL time with the given value.
DateTimeDataValue	getDataValue(Timestamp value, DateTimeDataValue previous)	Get a SQL timestamp with the given value.
RefDataValue	getDataValue(RowLocation value, RefDataValue previous)	Get a RefDataValue with the given value.
DateTimeDataValue	getDate(DataValueDescriptor operand)	Implement the date SQL function: construct a SQL date from a string, number, or timestamp.
DateTimeDataValue	getDateValue(String dateStr, boolean isJdbcEscape)
final NumberDataValue	getDecimalDataValue(Number value, NumberDataValue previous)	Get a SQL DECIMAL with the given value.
private LocaleFinder	getLocaleFinder()
BitDataValue	getLongVarbitDataValue(byte[] value, BitDataValue previous)	Get a SQL Long Bit Varying with the given value.
StringDataValue	getLongvarcharDataValue(String value)	Get a SQL long varchar with the given value.
StringDataValue	getLongvarcharDataValue(String value, StringDataValue previous)	Get a SQLLongvarchar object to represent a SQL LONG VARCHAR (UCS_BASIC) with the given value.
StringDataValue	getLongvarcharDataValue(String value, StringDataValue previous, int collationType)	Return a StringDataValue to represent a SQL LONG VARCHAR with the given collation re-using previous if not null.
private static ModuleFactory	getMonitor()	Privileged Monitor lookup.
DataValueDescriptor	getNull(int formatId, int collationType)	Return an object based on the format id and collation type.
BitDataValue	getNullBit(BitDataValue dataValue)	Get a SQL Bit with a SQL null value.
BitDataValue	getNullBlob(BitDataValue dataValue)	BLOB
BooleanDataValue	getNullBoolean(BooleanDataValue dataValue)	Get a SQL boolean with a SQL null value.
NumberDataValue	getNullByte(NumberDataValue dataValue)	Get a SQL tinyint with a SQL null value.
StringDataValue	getNullChar(StringDataValue dataValue)	Get a SQL CHAR (UCS_BASIC) with a SQL null value.
StringDataValue	getNullChar(StringDataValue previous, int collationType)	Get a SQL CHAR set to NULL with collation set to collationType.
StringDataValue	getNullClob(StringDataValue dataValue)	Get a SQL CLOB (UCS_BASIC) with a SQL null value.
StringDataValue	getNullClob(StringDataValue previous, int collationType)	Get a SQL CLOB set to NULL with collation set to collationType.
DateTimeDataValue	getNullDate(DateTimeDataValue dataValue)	Get a SQL date with a SQL null value.
final NumberDataValue	getNullDecimal(NumberDataValue dataValue)	Get a SQL Decimal/Numeric with a SQL null value.
NumberDataValue	getNullDouble(NumberDataValue dataValue)	Get a SQL double with a SQL null value.
static DataValueDescriptor	getNullDVDWithUCS_BASICcollation(int formatId)	This method will return a DVD based on the formatId.
NumberDataValue	getNullFloat(NumberDataValue dataValue)	Get a SQL float with a SQL null value.
NumberDataValue	getNullInteger(NumberDataValue dataValue)	Get a SQL int with a SQL null value.
NumberDataValue	getNullLong(NumberDataValue dataValue)	Get a SQL bigint with a SQL null value.
BitDataValue	getNullLongVarbit(BitDataValue dataValue)	Get a SQL Long Bit Varying with a SQL null value.
StringDataValue	getNullLongvarchar(StringDataValue dataValue)	Get a SQL LONG VARCHAR (UCS_BASIC) with a SQL null value.
StringDataValue	getNullLongvarchar(StringDataValue previous, int collationType)	Get a SQL LONG VARCHAR set to NULL with collation set to collationType.
UserDataValue	getNullObject(UserDataValue dataValue)	Get a User-defined data value with a SQL null value.
RefDataValue	getNullRef(RefDataValue dataValue)	Get a RefDataValue with a SQL null value.
NumberDataValue	getNullShort(NumberDataValue dataValue)	Get a SQL smallint with a SQL null value.
DateTimeDataValue	getNullTime(DateTimeDataValue dataValue)	Get a SQL time with a SQL null value.
DateTimeDataValue	getNullTimestamp(DateTimeDataValue dataValue)	Get a SQL timestamp with a SQL null value.
BitDataValue	getNullVarbit(BitDataValue dataValue)	Get a SQL Bit Varying with a SQL null value.
StringDataValue	getNullVarchar(StringDataValue dataValue)	Get a SQL VARCHAR (UCS_BASIC) with a SQL null value.
StringDataValue	getNullVarchar(StringDataValue previous, int collationType)	Get a SQL VARCHAR set to NULL with collation set to collationType.
XMLDataValue	getNullXML(XMLDataValue dataValue)	getNullXML: Get an XML with a SQL null value.
DateTimeDataValue	getTimestamp(DataValueDescriptor operand)	Implement the timestamp SQL function: construct a SQL timestamp from a string, or timestamp.
DateTimeDataValue	getTimestamp(DataValueDescriptor date, DataValueDescriptor time)	Construct a SQL timestamp from a date and time.
DateTimeDataValue	getTimestampValue(String timestampStr, boolean isJdbcEscape)
DateTimeDataValue	getTimeValue(String timeStr, boolean isJdbcEscape)
BitDataValue	getVarbitDataValue(byte[] value, BitDataValue previous)	Get a SQL bit with the given value.
StringDataValue	getVarcharDataValue(String value)	Get a SQL varchar with the given value.
StringDataValue	getVarcharDataValue(String value, StringDataValue previous)	Get a SQLVarhar object to represent a SQL VARCHAR (UCS_BASIC) with the given value.
StringDataValue	getVarcharDataValue(String value, StringDataValue previous, int collationType)	Return a StringDataValue to represent a SQL VARCHAR with the given collation re-using previous if not null.
XMLDataValue	getXMLDataValue(XMLDataValue previous)	getXMLDataValue: Get a null XML value.
void	stop()	Stop the module.
private RuleBasedCollator	verifyCollatorSupport(int strength)	Verify that JVM has support for the Collator for the database's locale.

Methods inherited from class Object

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

Field Details

localeFinder

private LocaleFinder localeFinder

databaseLocale

private Locale databaseLocale

collatorForCharacterTypes

private RuleBasedCollator collatorForCharacterTypes

Constructor Details

DataValueFactoryImpl

public DataValueFactoryImpl()

Method Details

boot

public void boot(boolean create,
 Properties properties)
          throws StandardException

Description copied from interface: ModuleControl

Boot this module with the given properties. Creates a module instance that can be found using the findModule() methods of Monitor. The module can only be found using one of these findModule() methods once this method has returned.

An implementation's boot method can throw StandardException. If it is thrown the module is not registered by the monitor and therefore cannot be found through a findModule(). In this case the module's stop() method is not called, thus throwing this exception must free up any resources.

When create is true the contents of the properties object will be written to the service.properties of the persistent service. Thus any code that requires an entry in service.properties must explicitly place the value in this properties set using the put method.
Typically the properties object contains one or more default properties sets, which are not written out to service.properties. These default sets are how callers modify the create process. In a JDBC connection database create the first set of defaults is a properties object that contains the attributes that were set on the jdbc:derby: URL. This attributes properties set has the second default properties set as its default. This set (which could be null) contains the properties that the user set on their DriverManager.getConnection() call, and are thus not owned by Derby code, and thus must not be modified by Derby code.

When create is false the properties object contains all the properties set in the service.properties file plus a limited number of attributes from the JDBC URL attributes or connection properties set. This avoids properties set by the user compromising the boot process. An example of a property passed in from the JDBC world is the bootPassword for encrypted databases.

Code should not hold onto the passed in properties reference after boot time as its contents may change underneath it. At least after the complete boot is completed, the links to all the default sets will be removed.

Specified by:

boot in interface ModuleControl

Throws:

StandardException - Module cannot be started.

See Also:

• Monitor
• ModuleFactory

stop

public void stop()

Description copied from interface: ModuleControl

Stop the module. The module may be found via a findModule() method until some time after this method returns. Therefore the factory must be prepared to reject requests to it once it has been stopped. In addition other modules may cache a reference to the module and make requests of it after it has been stopped, these requests should be rejected as well.

Specified by:

stop in interface ModuleControl

See Also:

• Monitor
• ModuleFactory

getDataValue

public NumberDataValue getDataValue(int value,
 NumberDataValue previous)
                             throws StandardException

Description copied from interface: DataValueFactory

Get a SQL int with the given value. The second arg re-uses the previous value, if non-null, as the data holder to return.

Specified by:

getDataValue in interface DataValueFactory

Throws:

StandardException

See Also:

• DataValueFactory.getDataValue(Integer, NumberDataValue)

getDataValue

public NumberDataValue getDataValue(Integer value,
 NumberDataValue previous)
                             throws StandardException

Description copied from interface: DataValueFactory

Get a SQL int with the given value. A null argument means get a SQL null value. Uses the previous value (if non-null) to hold the return value.

Specified by:

getDataValue in interface DataValueFactory

Throws:

StandardException

getDataValue

public NumberDataValue getDataValue(char value,
 NumberDataValue previous)
                             throws StandardException

Description copied from interface: DataValueFactory

Get a SQL int with a char value. A null argument means get a SQL null value. Uses the previous value (if non-null) to hold the return value.

Specified by:

getDataValue in interface DataValueFactory

Throws:

StandardException

getDataValue

public NumberDataValue getDataValue(short value,
 NumberDataValue previous)
                             throws StandardException

Description copied from interface: DataValueFactory

Get a SQL SMALLINT with the given value. Uses the previous value, if non-null, as the data holder to return.

Specified by:

getDataValue in interface DataValueFactory

Throws:

StandardException

getDataValue

public NumberDataValue getDataValue(Short value,
 NumberDataValue previous)
                             throws StandardException

Description copied from interface: DataValueFactory

Get a SQL smallint with the given value. A null argument means get a SQL null value. The second arg uses the previous value (if non-null) to hold the return value.

Specified by:

getDataValue in interface DataValueFactory

Throws:

StandardException

getDataValue

public NumberDataValue getDataValue(byte value,
 NumberDataValue previous)
                             throws StandardException

Description copied from interface: DataValueFactory

Get a SQL TINYINT with the given value. Uses the previous value, if non-null, as the data holder to return.

Specified by:

getDataValue in interface DataValueFactory

Throws:

StandardException

getDataValue

public NumberDataValue getDataValue(Byte value,
 NumberDataValue previous)
                             throws StandardException

Description copied from interface: DataValueFactory

Get a SQL TINYINT with the given value. A null argument means get a SQL null value. The second arg uses the previous value (if non-null) to hold the return value.

Specified by:

getDataValue in interface DataValueFactory

Throws:

StandardException

getDataValue

public NumberDataValue getDataValue(long value,
 NumberDataValue previous)
                             throws StandardException

Description copied from interface: DataValueFactory

Get a SQL bigint with the given value. The second arg re-uses the previous value, if non-null, as the data holder to return.

Specified by:

getDataValue in interface DataValueFactory

Throws:

StandardException

getDataValue

public NumberDataValue getDataValue(Long value,
 NumberDataValue previous)
                             throws StandardException

Description copied from interface: DataValueFactory

Get a SQL bigint with the given value. A null argument means get a SQL null value. The second arg uses the previous value (if non-null) to hold the return value.

Specified by:

getDataValue in interface DataValueFactory

Throws:

StandardException

getDataValue

public NumberDataValue getDataValue(float value,
 NumberDataValue previous)
                             throws StandardException

Description copied from interface: DataValueFactory

Get a SQL real with the given value. Uses the previous value, if non-null, as the data holder to return.

Specified by:

getDataValue in interface DataValueFactory

Throws:

StandardException - Thrown on error

getDataValue

public NumberDataValue getDataValue(Float value,
 NumberDataValue previous)
                             throws StandardException

Description copied from interface: DataValueFactory

Get a SQL real with the given value. A null argument means get a SQL null value. The second arg uses the previous value (if non-null) to hold the return value.

Specified by:

getDataValue in interface DataValueFactory

Throws:

StandardException

getDataValue

public NumberDataValue getDataValue(double value,
 NumberDataValue previous)
                             throws StandardException

Description copied from interface: DataValueFactory

Get a SQL double precision with the given value. Uses the previous value, if non-null, as the data holder to return.

Specified by:

getDataValue in interface DataValueFactory

Throws:

StandardException - Thrown on error

getDataValue

public NumberDataValue getDataValue(Double value,
 NumberDataValue previous)
                             throws StandardException

Description copied from interface: DataValueFactory

Get a SQL double precision with the given value. A null argument means a SQL null value. The second arg uses the previous value (if non-null) to hold the return value.

Specified by:

getDataValue in interface DataValueFactory

Throws:

StandardException - Thrown on error

getDecimalDataValue

public final NumberDataValue getDecimalDataValue(Number value,
 NumberDataValue previous)
                                          throws StandardException

Description copied from interface: DataValueFactory

Get a SQL DECIMAL with the given value. Uses the previous value, if non-null, as the data holder to return.

Specified by:

getDecimalDataValue in interface DataValueFactory

Throws:

StandardException - Thrown on error

getDataValue

public BooleanDataValue getDataValue(boolean value,
 BooleanDataValue previous)
                              throws StandardException

Description copied from interface: DataValueFactory

Get a SQL boolean with the given value. The second arg re-uses the previous value, if non-null, as the data holder to return.

Specified by:

getDataValue in interface DataValueFactory

Throws:

StandardException

getDataValue

public BooleanDataValue getDataValue(Boolean value,
 BooleanDataValue previous)
                              throws StandardException

Description copied from interface: DataValueFactory

Get a SQL boolean with the given value. A null argument means get a SQL null value. The second arg uses the previous value (if non-null) to hold the return value.

Specified by:

getDataValue in interface DataValueFactory

Throws:

StandardException

getBitDataValue

public BitDataValue getBitDataValue(byte[] value)
                             throws StandardException

Description copied from interface: DataValueFactory

Get a SQL bit with the given value. The second form re-uses the previous value, if non-null, as the data holder to return.

Specified by:

getBitDataValue in interface DataValueFactory

Throws:

StandardException - Thrown on error

getBitDataValue

public BitDataValue getBitDataValue(byte[] value,
 BitDataValue previous)
                             throws StandardException

Specified by:

getBitDataValue in interface DataValueFactory

Throws:

StandardException

getVarbitDataValue

public BitDataValue getVarbitDataValue(byte[] value,
 BitDataValue previous)
                                throws StandardException

Description copied from interface: DataValueFactory

Get a SQL bit with the given value. Uses the previous value, if non-null, as the data holder to return.

Specified by:

getVarbitDataValue in interface DataValueFactory

Throws:

StandardException - Thrown on error

getLongVarbitDataValue

public BitDataValue getLongVarbitDataValue(byte[] value,
 BitDataValue previous)
                                    throws StandardException

Description copied from interface: DataValueFactory

Get a SQL Long Bit Varying with the given value. A null argument means get a SQL null value. Uses the previous value (if non-null) to hold the return value.

Specified by:

getLongVarbitDataValue in interface DataValueFactory

Throws:

StandardException - Thrown on error

getBlobDataValue

public BitDataValue getBlobDataValue(byte[] value,
 BitDataValue previous)
                              throws StandardException

Description copied from interface: DataValueFactory

Get a SQL Blob with the given value. A null argument means get a SQL null value. Uses the previous value (if non-null) to hold the return value.

Specified by:

getBlobDataValue in interface DataValueFactory

Throws:

StandardException - Thrown on error

getBlobDataValue

public BitDataValue getBlobDataValue(Blob value,
 BitDataValue previous)
                              throws StandardException

Description copied from interface: DataValueFactory

Get a SQL Blob with the given value. A null argument means get a SQL null value. Uses the previous value (if non-null) to hold the return value.

Specified by:

getBlobDataValue in interface DataValueFactory

Throws:

StandardException - Thrown on error

getCharDataValue

public StringDataValue getCharDataValue(String value)

Description copied from interface: DataValueFactory

Get a new SQLChar object to represent a SQL CHAR (UCS_BASIC) with the given value. A null argument means get a SQL NULL value.

Specified by:

getCharDataValue in interface DataValueFactory

getCharDataValue

public StringDataValue getCharDataValue(String value,
 StringDataValue previous)
                                 throws StandardException

Description copied from interface: DataValueFactory

Get a SQLChar object to represent a SQL CHAR (UCS_BASIC with the given value. A null argument means get a SQL NULL value. If previous is not null (Java reference) then it will be set to the value passed in and returned, otherwise a new SQLChar will be created and set to the value.

Specified by:

getCharDataValue in interface DataValueFactory

Throws:

StandardException

getCharDataValue

public StringDataValue getCharDataValue(String value,
 StringDataValue previous,
 int collationType)
                                 throws StandardException

Return a StringDataValue to represent a SQL CHAR with the given collation re-using previous if not null.

Specified by:

getCharDataValue in interface DataValueFactory

Throws:

StandardException

getVarcharDataValue

public StringDataValue getVarcharDataValue(String value)

Description copied from interface: DataValueFactory

Get a SQL varchar with the given value. A null argument means get a SQL null value.

Specified by:

getVarcharDataValue in interface DataValueFactory

getVarcharDataValue

public StringDataValue getVarcharDataValue(String value,
 StringDataValue previous)
                                    throws StandardException

Description copied from interface: DataValueFactory

Get a SQLVarhar object to represent a SQL VARCHAR (UCS_BASIC) with the given value. A null argument means get a SQL NULL value. If previous is not null (Java reference) then it will be set to the value passed in and returned, otherwise a new SQLVarchar will be created and set to the value.

Specified by:

getVarcharDataValue in interface DataValueFactory

Throws:

StandardException

getVarcharDataValue

public StringDataValue getVarcharDataValue(String value,
 StringDataValue previous,
 int collationType)
                                    throws StandardException

Return a StringDataValue to represent a SQL VARCHAR with the given collation re-using previous if not null.

Specified by:

getVarcharDataValue in interface DataValueFactory

Throws:

StandardException

getLongvarcharDataValue

public StringDataValue getLongvarcharDataValue(String value)

Description copied from interface: DataValueFactory

Get a SQL long varchar with the given value. A null argument means get a SQL null value.

Specified by:

getLongvarcharDataValue in interface DataValueFactory

getLongvarcharDataValue

public StringDataValue getLongvarcharDataValue(String value,
 StringDataValue previous)
                                        throws StandardException

Description copied from interface: DataValueFactory

Get a SQLLongvarchar object to represent a SQL LONG VARCHAR (UCS_BASIC) with the given value. A null argument means get a SQL NULL value. If previous is not null (Java reference) then it will be set to the value passed in and returned, otherwise a new SQLLongvarchar will be created and set to the value.

Specified by:

getLongvarcharDataValue in interface DataValueFactory

Throws:

StandardException

getLongvarcharDataValue

public StringDataValue getLongvarcharDataValue(String value,
 StringDataValue previous,
 int collationType)
                                        throws StandardException

Return a StringDataValue to represent a SQL LONG VARCHAR with the given collation re-using previous if not null.

Specified by:

getLongvarcharDataValue in interface DataValueFactory

Throws:

StandardException

getClobDataValue

public StringDataValue getClobDataValue(String value,
 StringDataValue previous)
                                 throws StandardException

Description copied from interface: DataValueFactory

Get a SQLClob object to represent a SQL CLOB (UCS_BASIC) with the given value. A null argument means get a SQL NULL value. If previous is not null (Java reference) then it will be set to the value passed in and returned, otherwise a new SQLLongvarchar will be created and set to the value.

Specified by:

getClobDataValue in interface DataValueFactory

Throws:

StandardException

getClobDataValue

public StringDataValue getClobDataValue(Clob value,
 StringDataValue previous)
                                 throws StandardException

Description copied from interface: DataValueFactory

Get a SQLClob object to represent a SQL CLOB (UCS_BASIC) with the given value. A null argument means get a SQL NULL value. If previous is not null (Java reference) then it will be set to the value passed in and returned, otherwise a new SQLLongvarchar will be created and set to the value.

Specified by:

getClobDataValue in interface DataValueFactory

Throws:

StandardException

getClobDataValue

public StringDataValue getClobDataValue(Clob value,
 StringDataValue previous,
 int collationType)
                                 throws StandardException

Description copied from interface: DataValueFactory

Get a StringDataValue to represent a SQL CLOB with the passed in collationType. A null argument means get a SQL NULL value. If previous is not null (Java reference) then it will be set to the value passed in and returned, otherwise a new StringDataValue will be created and set to the value. If collationType is equal to StringDataValue.COLLATION_TYPE_UCS_BASIC then the call is the equivalent of the overload without collationType.

Specified by:

getClobDataValue in interface DataValueFactory

Throws:

StandardException

getClobDataValue

public StringDataValue getClobDataValue(String value,
 StringDataValue previous,
 int collationType)
                                 throws StandardException

Return a StringDataValue to represent a SQL CLOB with the given collation re-using previous if not null.

Specified by:

getClobDataValue in interface DataValueFactory

Throws:

StandardException

getDataValue

public DateTimeDataValue getDataValue(Date value,
 DateTimeDataValue previous)
                               throws StandardException

Description copied from interface: DataValueFactory

Get a SQL date with the given value. A null argument means get a SQL null value. The second arg re-uses the previous value, if non-null, as the data holder to return.

Specified by:

getDataValue in interface DataValueFactory

Throws:

StandardException

getDataValue

public DateTimeDataValue getDataValue(Time value,
 DateTimeDataValue previous)
                               throws StandardException

Description copied from interface: DataValueFactory

Get a SQL time with the given value. A null argument means get a SQL null value. The second arg re-uses the previous value, if non-null, as the data holder to return.

Specified by:

getDataValue in interface DataValueFactory

Throws:

StandardException

getDataValue

public DateTimeDataValue getDataValue(Timestamp value,
 DateTimeDataValue previous)
                               throws StandardException

Description copied from interface: DataValueFactory

Get a SQL timestamp with the given value. A null argument means get a SQL null value. The second arg re-uses the previous value, if non-null, as the data holder to return.

Specified by:

getDataValue in interface DataValueFactory

Throws:

StandardException

getDate

public DateTimeDataValue getDate(DataValueDescriptor operand)
                          throws StandardException

Implement the date SQL function: construct a SQL date from a string, number, or timestamp.

Specified by:

getDate in interface DataValueFactory

Parameters:

operand - Must be a date, a number, or a string convertible to a date.

Returns:

the corresponding date value

Throws:

StandardException - standard error policy

getTimestamp

public DateTimeDataValue getTimestamp(DataValueDescriptor operand)
                               throws StandardException

Implement the timestamp SQL function: construct a SQL timestamp from a string, or timestamp.

Specified by:

getTimestamp in interface DataValueFactory

Parameters:

operand - Must be a timestamp or a string convertible to a timestamp.

Throws:

StandardException - standard error policy

getTimestamp

public DateTimeDataValue getTimestamp(DataValueDescriptor date,
 DataValueDescriptor time)
                               throws StandardException

Description copied from interface: DataValueFactory

Construct a SQL timestamp from a date and time.

Specified by:

getTimestamp in interface DataValueFactory

Parameters:

date - Must be convertible to a date.

time - Must be convertible to a time.

Throws:

StandardException

getDataValue

public UserDataValue getDataValue(Object value,
 UserDataValue previous)

Description copied from interface: DataValueFactory

Get a User-defined data value with the given value and type name. A null argument means get a SQL null value. The second arg uses the previous value (if non-null) hold the return value.

Specified by:

getDataValue in interface DataValueFactory

getDataValue

public RefDataValue getDataValue(RowLocation value,
 RefDataValue previous)

Description copied from interface: DataValueFactory

Get a RefDataValue with the given value. A null argument means get a SQL null value. Uses the previous value (if non-null) to hold the return value.

Specified by:

getDataValue in interface DataValueFactory

getNullInteger

public NumberDataValue getNullInteger(NumberDataValue dataValue)

Description copied from interface: DataValueFactory

Get a SQL int with a SQL null value. If the supplied value is null then get a new value, otherwise set it to null and return that value.

Specified by:

getNullInteger in interface DataValueFactory

getNullShort

public NumberDataValue getNullShort(NumberDataValue dataValue)

Description copied from interface: DataValueFactory

Get a SQL smallint with a SQL null value. If the supplied value is null then get a new value, otherwise set it to null and return that value.

Specified by:

getNullShort in interface DataValueFactory

getNullLong

public NumberDataValue getNullLong(NumberDataValue dataValue)

Description copied from interface: DataValueFactory

Get a SQL bigint with a SQL null value. If the supplied value is null then get a new value, otherwise set it to null and return that value.

Specified by:

getNullLong in interface DataValueFactory

getNullByte

public NumberDataValue getNullByte(NumberDataValue dataValue)

Description copied from interface: DataValueFactory

Get a SQL tinyint with a SQL null value. If the supplied value is null then get a new value, otherwise set it to null and return that value.

Specified by:

getNullByte in interface DataValueFactory

getNullFloat

public NumberDataValue getNullFloat(NumberDataValue dataValue)

Description copied from interface: DataValueFactory

Get a SQL float with a SQL null value. If the supplied value is null then get a new value, otherwise set it to null and return that value.

Specified by:

getNullFloat in interface DataValueFactory

getNullDouble

public NumberDataValue getNullDouble(NumberDataValue dataValue)

Description copied from interface: DataValueFactory

Get a SQL double with a SQL null value. If the supplied value is null then get a new value, otherwise set it to null and return that value.

Specified by:

getNullDouble in interface DataValueFactory

getNullDecimal

public final NumberDataValue getNullDecimal(NumberDataValue dataValue)

Description copied from interface: DataValueFactory

Get a SQL Decimal/Numeric with a SQL null value. If the supplied value is null then get a new value, otherwise set it to null and return that value.

Specified by:

getNullDecimal in interface DataValueFactory

getNullBoolean

public BooleanDataValue getNullBoolean(BooleanDataValue dataValue)

Description copied from interface: DataValueFactory

Get a SQL boolean with a SQL null value. If the supplied value is null then get a new value, otherwise set it to null and return that value.

Specified by:

getNullBoolean in interface DataValueFactory

getNullBit

public BitDataValue getNullBit(BitDataValue dataValue)
                        throws StandardException

Description copied from interface: DataValueFactory

Get a SQL Bit with a SQL null value. If the supplied value is null then get a new value, otherwise set it to null and return that value.

Specified by:

getNullBit in interface DataValueFactory

Throws:

StandardException - Thrown on error

getNullVarbit

public BitDataValue getNullVarbit(BitDataValue dataValue)
                           throws StandardException

Description copied from interface: DataValueFactory

Get a SQL Bit Varying with a SQL null value. If the supplied value is null then get a new value, otherwise set it to null and return that value.

Specified by:

getNullVarbit in interface DataValueFactory

Throws:

StandardException - Thrown on error

getNullLongVarbit

public BitDataValue getNullLongVarbit(BitDataValue dataValue)
                               throws StandardException

Description copied from interface: DataValueFactory

Get a SQL Long Bit Varying with a SQL null value. If the supplied value is null then get a new value, otherwise set it to null and return that value.

Specified by:

getNullLongVarbit in interface DataValueFactory

Throws:

StandardException - Thrown on error

getNullBlob

public BitDataValue getNullBlob(BitDataValue dataValue)
                         throws StandardException

BLOB

Specified by:

getNullBlob in interface DataValueFactory

Throws:

StandardException - Thrown on error

getNullChar

public StringDataValue getNullChar(StringDataValue dataValue)

Description copied from interface: DataValueFactory

Get a SQL CHAR (UCS_BASIC) with a SQL null value. If the supplied value is null then get a new value, otherwise set it to null and return that value.

Specified by:

getNullChar in interface DataValueFactory

getNullChar

public StringDataValue getNullChar(StringDataValue previous,
 int collationType)
                            throws StandardException

Get a SQL CHAR set to NULL with collation set to collationType. If the supplied value is null then get a new value, otherwise set it to null and return that value.

Specified by:

getNullChar in interface DataValueFactory

Throws:

StandardException

getNullVarchar

public StringDataValue getNullVarchar(StringDataValue dataValue)

Description copied from interface: DataValueFactory

Get a SQL VARCHAR (UCS_BASIC) with a SQL null value. If the supplied value is null then get a new value, otherwise set it to null and return that value.

Specified by:

getNullVarchar in interface DataValueFactory

getNullVarchar

public StringDataValue getNullVarchar(StringDataValue previous,
 int collationType)
                               throws StandardException

Get a SQL VARCHAR set to NULL with collation set to collationType. If the supplied value is null then get a new value, otherwise set it to null and return that value.

Specified by:

getNullVarchar in interface DataValueFactory

Throws:

StandardException

getNullLongvarchar

public StringDataValue getNullLongvarchar(StringDataValue dataValue)

Description copied from interface: DataValueFactory

Get a SQL LONG VARCHAR (UCS_BASIC) with a SQL null value. If the supplied value is null then get a new value, otherwise set it to null and return that value.

Specified by:

getNullLongvarchar in interface DataValueFactory

getNullLongvarchar

public StringDataValue getNullLongvarchar(StringDataValue previous,
 int collationType)
                                   throws StandardException

Get a SQL LONG VARCHAR set to NULL with collation set to collationType. If the supplied value is null then get a new value, otherwise set it to null and return that value.

Specified by:

getNullLongvarchar in interface DataValueFactory

Throws:

StandardException

getNullClob

public StringDataValue getNullClob(StringDataValue dataValue)

Description copied from interface: DataValueFactory

Get a SQL CLOB (UCS_BASIC) with a SQL null value. If the supplied value is null then get a new value, otherwise set it to null and return that value.

Specified by:

getNullClob in interface DataValueFactory

getNullClob

public StringDataValue getNullClob(StringDataValue previous,
 int collationType)
                            throws StandardException

Get a SQL CLOB set to NULL with collation set to collationType. If the supplied value is null then get a new value, otherwise set it to null and return that value.

Specified by:

getNullClob in interface DataValueFactory

Throws:

StandardException

getNullObject

public UserDataValue getNullObject(UserDataValue dataValue)

Description copied from interface: DataValueFactory

Get a User-defined data value with a SQL null value. If the supplied value is null then get a new value, otherwise set it to null and return that value.

Specified by:

getNullObject in interface DataValueFactory

getNullRef

public RefDataValue getNullRef(RefDataValue dataValue)

Description copied from interface: DataValueFactory

Get a RefDataValue with a SQL null value. If the supplied value is null then get a new value, otherwise set it to null and return that value.

Specified by:

getNullRef in interface DataValueFactory

getNullDate

public DateTimeDataValue getNullDate(DateTimeDataValue dataValue)

Description copied from interface: DataValueFactory

Get a SQL date with a SQL null value. If the supplied value is null then get a new value, otherwise set it to null and return that value.

Specified by:

getNullDate in interface DataValueFactory

getNullTime

public DateTimeDataValue getNullTime(DateTimeDataValue dataValue)

Description copied from interface: DataValueFactory

Get a SQL time with a SQL null value. If the supplied value is null then get a new value, otherwise set it to null and return that value.

Specified by:

getNullTime in interface DataValueFactory

getNullTimestamp

public DateTimeDataValue getNullTimestamp(DateTimeDataValue dataValue)

Description copied from interface: DataValueFactory

Get a SQL timestamp with a SQL null value. If the supplied value is null then get a new value, otherwise set it to null and return that value.

Specified by:

getNullTimestamp in interface DataValueFactory

getDateValue

public DateTimeDataValue getDateValue(String dateStr,
 boolean isJdbcEscape)
                               throws StandardException

Specified by:

getDateValue in interface DataValueFactory

Parameters:

dateStr - A date in one of the DB2 standard date formats or the local format.

isJdbcEscape - If true then the timestamp must be in the JDBC timestamp escape format, otherwise it must be in the DB2 timestamp format.

Returns:

A DateTimeDataValue

Throws:

StandardException - if the syntax is invalid or the date is out of range.

getTimeValue

public DateTimeDataValue getTimeValue(String timeStr,
 boolean isJdbcEscape)
                               throws StandardException

Specified by:

getTimeValue in interface DataValueFactory

Parameters:

timeStr - A date in one of the DB2 standard time formats or the local format.

isJdbcEscape - If true then the timestamp must be in the JDBC time escape format, otherwise it must be in the DB2 time format.

Returns:

A DateTimeDataValue

Throws:

StandardException - if the syntax is invalid or the time is out of range.

getTimestampValue

public DateTimeDataValue getTimestampValue(String timestampStr,
 boolean isJdbcEscape)
                                    throws StandardException

Specified by:

getTimestampValue in interface DataValueFactory

Parameters:

timestampStr - A time in string format.

isJdbcEscape - If true then the time must be in the JDBC time escape format, otherwise it must be in the DB2 time format.

Returns:

An internal timestamp

Throws:

StandardException - if the syntax is invalid or the timestamp is out of range.

getXMLDataValue

public XMLDataValue getXMLDataValue(XMLDataValue previous)
                             throws StandardException

getXMLDataValue: Get a null XML value. If a non-null XMLDataValue is received then re-use that instance, otherwise create a new one.

Specified by:

getXMLDataValue in interface DataValueFactory

Parameters:

previous - An XMLDataValue instance to re-use.

Returns:

An XMLDataValue instance corresponding to a NULL value. If an XMLDataValue was received, the returned XMLDataValue is the same instance as the one received, but the actual data has been set to a SQL null value.

Throws:

StandardException - Thrown on error

getNullXML

public XMLDataValue getNullXML(XMLDataValue dataValue)

getNullXML: Get an XML with a SQL null value. If the supplied value is null then get a new value, otherwise set it to null and return that value.

Specified by:

getNullXML in interface DataValueFactory

Parameters:

dataValue - An XMLDataValue instance to re-use.

Returns:

An XMLDataValue instance corresponding to a NULL value. If an XMLDataValue was received, the returned XMLDataValue is the same instance as the one received, but the actual data has been set to null.

getCharacterCollator

public RuleBasedCollator getCharacterCollator(int collationType)
                                       throws StandardException

Description copied from interface: DataValueFactory

Return the RuleBasedCollator depending on the collation type. If the collation type is UCS_BASIC, then this method will return null. If the collation type is TERRITORY_BASED then the return value will be the Collator derived from the database's locale. If this is the first time Collator is being requested for a database with collation type of TERRITORY_BASED, then we will check to make sure that JVM supports the Collator for the database's locale. If not, we will throw an exception This method will be used when Store code is trying to create a DVD template row using the format ids and the collation types. First a DVD will be constructed just using format id. Then if the DVD is of type StringDataValue, then it will call this method to get the Collator object. If the Collator object returned from this method is null then we will continue to use the default DVDs for the character types, ie the DVDs which just use the JVM's default collation. (This is why, we want this method to return null if we are dealing with UCS_BASIC.) If the Collator object returned is not null, then we will construct collation sensitive DVD for the character types. So, the return value of this method determines if we are going to create a character DVD with default collation or with custom collation.

Specified by:

getCharacterCollator in interface DataValueFactory

Parameters:

collationType - This will be UCS_BASIC or TERRITORY_BASED

Returns:

Collator null if the collation type is UCS_BASIC. Collator based on territory if the collation type is TERRITORY_BASED

Throws:

StandardException

See Also:

• DataValueFactory.getCharacterCollator(int)

verifyCollatorSupport

private RuleBasedCollator verifyCollatorSupport(int strength)
                                         throws StandardException

Verify that JVM has support for the Collator for the database's locale.

Parameters:

strength - Collator strength or -1 for locale default.

Returns:

Collator for database's locale

Throws:

StandardException - if JVM does not have support for Collator

getNull

public DataValueDescriptor getNull(int formatId,
 int collationType)
                            throws StandardException

Description copied from interface: DataValueFactory

Return an object based on the format id and collation type. For format ids which do not correspond to character types, a format id is sufficient to get the right DVD. But for character types, Derby uses same format id for collation sensitive character types and for character types that use the default JVM collation. To get the correct DVD for character types, we need to know the collation type. Using collation type, we will determine if we need to construct collation sensitive DVD and associate the correct RuleBasedCollator with such DVDs.

Specified by:

getNull in interface DataValueFactory

Parameters:

formatId - Format id for the DVD

collationType - this is meaningful only for character types.

Returns:

DataValueDescriptor which will be constructed using the passed parameters

Throws:

StandardException

See Also:

• DataValueFactory.getNull(int, int)

getNullDVDWithUCS_BASICcollation

public static DataValueDescriptor getNullDVDWithUCS_BASICcollation(int formatId)

This method will return a DVD based on the formatId. It doesn't take into account the collation that should be associated with collation sensitive DVDs, which are all the character type DVDs. Such DVDs returned from this method have default UCS_BASIC collation associated with them. If collation associated should be territory based, then that needs to be handled by the caller of this method. An example of such code in the caller can be seen in DataValueFactory.getNull method.

Parameters:

formatId - Return a DVD based on the format id

Returns:

DataValueDescriptor with default collation of UCS_BASIC

getLocaleFinder

private LocaleFinder getLocaleFinder()

getContext

static Context getContext(String contextID)

Privileged lookup of a Context. Package protected so that user code can't call this entry point.

getMonitor

private static ModuleFactory getMonitor()

Privileged Monitor lookup. Must be private so that user code can't call this entry point.