Apache Derby Database Engine and Embedded JDBC Driver 10.17.1.0 · org.apache.derby.iapi.types.NumberDataType

Modifier and Type	Field and Description
pack-priv static final BigDecimal	MAXLONG_PLUS_ONE
pack-priv static final BigDecimal	MINLONG_MINUS_ONE

Access	Constructor and Description
public	NumberDataType()

Method Summary

Modifier and Type	Method and Description
public final NumberDataValue	Returns: this object's absolute value. Null if object is null. absolute(NumberDataValue The result of the previous call to this method, null if not called yet. result) Implements org.apache.derby.iapi.types.NumberDataValue.absolute. Numbers check for isNegative first and negate it if negative.
public final int	compare(DataValueDescriptor The Orderable to compare this one to. arg) Implements org.apache.derby.iapi.types.DataValueDescriptor.compare. Compare this Orderable with a given Orderable for the purpose of index positioning.
public final boolean	compare(int Orderable.ORDER_OP_EQUALS means do an = comparison. Orderable.ORDER_OP_LESSTHAN means compare this < other. Orderable.ORDER_OP_LESSOREQUALS means compare this <= other. op, DataValueDescriptor The DataValueDescriptor to compare this one to. other, boolean True means to treat nulls as ordered values, that is, treat SQL null as equal to null, and less than all other values. False means to treat nulls as unknown values, that is, the result of any comparison with a null is the UNKNOWN truth value. orderedNulls, boolean The return value to use if the result of the comparison is the UNKNOWN truth value. In other words, if orderedNulls is false, and a null is involved in the comparison, return unknownRV. This parameter is not used orderedNulls is true. unknownRV) Overrides org.apache.derby.iapi.types.DataType.compare. Implements org.apache.derby.iapi.types.DataValueDescriptor.compare. Compare this Orderable with a given Orderable for the purpose of qualification and sorting.
public NumberDataValue	Returns: A SQLInteger containing the result of the division divide(NumberDataValue The numerator dividend, NumberDataValue The denominator divisor, NumberDataValue The result of a previous call to this method, null if not called yet result) Implements org.apache.derby.iapi.types.NumberDataValue.divide. This method implements the / operator for TINYINT, SMALLINT and INTEGER.
public NumberDataValue	divide(NumberDataValue The numerator dividend, NumberDataValue The denominator divisor, NumberDataValue The result of the previous call to this method, null if not called yet. result, int The scale of the result, for decimal type. If pass in value < 0, can calculate it dynamically. scale) Implements org.apache.derby.iapi.types.NumberDataValue.divide. Suitable for integral types that ignore scale.
private static Context	getContextOrNull(final String contextID) Must be private so that user code can't call this entry point.
protected abstract boolean	Returns: A boolean. If this.value is negative, return true. For positive values or null, return false. isNegative() The isNegative abstract method.
public NumberDataValue	Returns: A SQLInteger containing the result of the subtraction minus(NumberDataValue The value to be subtracted from left, NumberDataValue The value to be subtracted right, NumberDataValue The result of a previous call to this method, null if not called yet result) Implements org.apache.derby.iapi.types.NumberDataValue.minus. This method implements the - operator for TINYINT, SMALLINT and INTEGER.
public NumberDataValue	mod(NumberDataValue The numerator dividend, NumberDataValue The denominator divisor, NumberDataValue The result of the previous call to this method, null if not called yet. result) Implements org.apache.derby.iapi.types.NumberDataValue.mod. The SQL mod operator.
public static double	normalizeDOUBLE(double v) normalizeDOUBLE normalizes the value, so that negative zero (-0.0) becomes positive.
public static float	normalizeREAL(float v) normalizeREAL normalizes the value, so that negative zero (-0.0) becomes positive.
public static float	normalizeREAL(final double v) normalizeREAL normalizes the value, so that negative zero (-0.0) becomes positive.
protected final boolean	objectNull(Object o)
public NumberDataValue	Returns: A NumberDataValue containing the result of the addition plus(NumberDataValue One of the addends addend1, NumberDataValue The other addend addend2, NumberDataValue The result of a previous call to this method, null if not called yet result) Implements org.apache.derby.iapi.types.NumberDataValue.plus. This method implements the + operator for TINYINT,SMALLINT,INT.
public void	setBigDecimal(BigDecimal required to be a BigDecimal or null. bigDecimal) Overrides org.apache.derby.iapi.types.DataType.setBigDecimal. Implements org.apache.derby.iapi.types.DataValueDescriptor.setBigDecimal. setValue for integral exact numerics.
pack-priv void	setObject(Object theValue) Overrides org.apache.derby.iapi.types.DataType.setObject. Set the value from a correctly typed Integer object.
public void	setValue(short The value to set this DataValueDescriptor to theValue) Overrides org.apache.derby.iapi.types.DataType.setValue. Implements org.apache.derby.iapi.types.DataValueDescriptor.setValue. Common code to handle converting a short to this value by using the int to this value conversion.
public void	setValue(byte The value to set this DataValueDescriptor to theValue) Overrides org.apache.derby.iapi.types.DataType.setValue. Implements org.apache.derby.iapi.types.DataValueDescriptor.setValue. Common code to handle converting a byte to this value by using the int to this value conversion.
public void	setValue(Number An Number containing the value to set this NumberDataValue to. Null means set the value to SQL null. theValue) Implements org.apache.derby.iapi.types.NumberDataValue.setValue. Common code to handle java.lang.Integer as a Number, used for TINYINT, SMALLINT, INTEGER
public NumberDataValue	Returns: this object's sqrt value. Null if object is null. Note -0.0f and -0.0d returns 0.0f and 0.0d. sqrt(NumberDataValue The result of the previous call to this method, null if not call yet. result) Implements org.apache.derby.iapi.types.NumberDataValue.sqrt. This is the sqrt method.
protected abstract int	typeCompare(DataValueDescriptor arg) Compare this (not null) to a non-null value.
public int	typeToBigDecimal() Overrides org.apache.derby.iapi.types.DataType.typeToBigDecimal. Implements org.apache.derby.iapi.types.DataValueDescriptor.typeToBigDecimal. Implementation for integral types.
private static boolean	Returns: false if dictionary is new enough, see DD_Version. useDB2Limits() Controls use of old DB2 limits (DERBY-3398).

MAXLONG_PLUS_ONE	back to summary
pack-priv static final BigDecimal MAXLONG_PLUS_ONE

MINLONG_MINUS_ONE	back to summary
pack-priv static final BigDecimal MINLONG_MINUS_ONE

NumberDataType	back to summary
public NumberDataType()

Method Detail

absolute	back to summary
public final NumberDataValue absolute(NumberDataValue result) throws StandardException Implements org.apache.derby.iapi.types.NumberDataValue.absolute. Numbers check for isNegative first and negate it if negative. Parameters result:NumberDataValue Doc from org.apache.derby.iapi.types.NumberDataValue.absolute. The result of the previous call to this method, null if not called yet. Returns:NumberDataValue this object's absolute value. Null if object is null. Exceptions StandardException: thrown on error.

absolute

back to summary

public final NumberDataValue absolute(NumberDataValue result) throws StandardException

Implements org.apache.derby.iapi.types.NumberDataValue.absolute.

Numbers check for isNegative first and negate it if negative.

Parameters

result:NumberDataValue

Doc from org.apache.derby.iapi.types.NumberDataValue.absolute.

The result of the previous call to this method, null if not called yet.

Returns:NumberDataValue

this object's absolute value. Null if object is null.

Exceptions

StandardException:: thrown on error.

compare	back to summary
public final int compare(DataValueDescriptor arg) throws StandardException Implements org.apache.derby.iapi.types.DataValueDescriptor.compare. Doc from org.apache.derby.iapi.types.DataValueDescriptor.compare. Compare this Orderable with a given Orderable for the purpose of index positioning. This method treats nulls as ordered values - that is, it treats SQL null as equal to null and greater than all other values. Parameters arg:DataValueDescriptor The Orderable to compare this one to. Returns:int <0 - this Orderable is less than other. 0 - this Orderable equals other. >0 - this Orderable is greater than other. The code should not explicitly look for -1, or 1. Exceptions StandardException: Thrown on error

compare

back to summary

public final int compare(DataValueDescriptor arg) throws StandardException

Implements org.apache.derby.iapi.types.DataValueDescriptor.compare.

Doc from org.apache.derby.iapi.types.DataValueDescriptor.compare.

Compare this Orderable with a given Orderable for the purpose of index positioning. This method treats nulls as ordered values - that is, it treats SQL null as equal to null and greater than all other values.

Parameters

arg:DataValueDescriptor: The Orderable to compare this one to.

Returns:int

<0 - this Orderable is less than other. 0 - this Orderable equals other. >0 - this Orderable is greater than other. The code should not explicitly look for -1, or 1.

Exceptions

StandardException:: Thrown on error

compare	back to summary
public final boolean compare(int op, DataValueDescriptor other, boolean orderedNulls, boolean unknownRV) throws StandardException Overrides org.apache.derby.iapi.types.DataType.compare. Implements org.apache.derby.iapi.types.DataValueDescriptor.compare. Doc from org.apache.derby.iapi.types.DataValueDescriptor.compare. Compare this Orderable with a given Orderable for the purpose of qualification and sorting. The caller gets to determine how nulls should be treated - they can either be ordered values or unknown values. Parameters op:int Orderable.ORDER_OP_EQUALS means do an = comparison. Orderable.ORDER_OP_LESSTHAN means compare this < other. Orderable.ORDER_OP_LESSOREQUALS means compare this <= other. other:DataValueDescriptor The DataValueDescriptor to compare this one to. orderedNulls:boolean True means to treat nulls as ordered values, that is, treat SQL null as equal to null, and less than all other values. False means to treat nulls as unknown values, that is, the result of any comparison with a null is the UNKNOWN truth value. unknownRV:boolean The return value to use if the result of the comparison is the UNKNOWN truth value. In other words, if orderedNulls is false, and a null is involved in the comparison, return unknownRV. This parameter is not used orderedNulls is true. Returns:boolean true if the comparison is true (duh!) Exceptions StandardException: thrown on error

compare

back to summary

public final boolean compare(int op, DataValueDescriptor other, boolean orderedNulls, boolean unknownRV) throws StandardException

Overrides org.apache.derby.iapi.types.DataType.compare.

Implements org.apache.derby.iapi.types.DataValueDescriptor.compare.

Doc from org.apache.derby.iapi.types.DataValueDescriptor.compare.

Compare this Orderable with a given Orderable for the purpose of qualification and sorting. The caller gets to determine how nulls should be treated - they can either be ordered values or unknown values.

Parameters

op:int: Orderable.ORDER_OP_EQUALS means do an = comparison. Orderable.ORDER_OP_LESSTHAN means compare this < other. Orderable.ORDER_OP_LESSOREQUALS means compare this <= other.
other:DataValueDescriptor: The DataValueDescriptor to compare this one to.
orderedNulls:boolean: True means to treat nulls as ordered values, that is, treat SQL null as equal to null, and less than all other values. False means to treat nulls as unknown values, that is, the result of any comparison with a null is the UNKNOWN truth value.
unknownRV:boolean: The return value to use if the result of the comparison is the UNKNOWN truth value. In other words, if orderedNulls is false, and a null is involved in the comparison, return unknownRV. This parameter is not used orderedNulls is true.

Returns:boolean

true if the comparison is true (duh!)

Exceptions

StandardException:: thrown on error

divide	back to summary
public NumberDataValue divide(NumberDataValue dividend, NumberDataValue divisor, NumberDataValue result) throws StandardException Implements org.apache.derby.iapi.types.NumberDataValue.divide. This method implements the / operator for TINYINT, SMALLINT and INTEGER. Specialized methods are not required for TINYINT and SMALLINT as the Java virtual machine always executes byte and int division as integer. Parameters dividend:NumberDataValue The numerator divisor:NumberDataValue The denominator result:NumberDataValue The result of a previous call to this method, null if not called yet Returns:NumberDataValue A SQLInteger containing the result of the division Exceptions StandardException: Thrown on error

divide

back to summary

public NumberDataValue divide(NumberDataValue dividend, NumberDataValue divisor, NumberDataValue result) throws StandardException

Implements org.apache.derby.iapi.types.NumberDataValue.divide.

This method implements the / operator for TINYINT, SMALLINT and INTEGER. Specialized methods are not required for TINYINT and SMALLINT as the Java virtual machine always executes byte and int division as integer.

Parameters

dividend:NumberDataValue: The numerator
divisor:NumberDataValue: The denominator
result:NumberDataValue: The result of a previous call to this method, null if not called yet

Returns:NumberDataValue

A SQLInteger containing the result of the division

Exceptions

StandardException:: Thrown on error

divide	back to summary
public NumberDataValue divide(NumberDataValue dividend, NumberDataValue divisor, NumberDataValue result, int scale) throws StandardException Implements org.apache.derby.iapi.types.NumberDataValue.divide. Suitable for integral types that ignore scale. Parameters dividend:NumberDataValue Doc from org.apache.derby.iapi.types.NumberDataValue.divide. The numerator divisor:NumberDataValue Doc from org.apache.derby.iapi.types.NumberDataValue.divide. The denominator result:NumberDataValue Doc from org.apache.derby.iapi.types.NumberDataValue.divide. The result of the previous call to this method, null if not called yet. scale:int Doc from org.apache.derby.iapi.types.NumberDataValue.divide. The scale of the result, for decimal type. If pass in value < 0, can calculate it dynamically. Returns:NumberDataValue Doc from org.apache.derby.iapi.types.NumberDataValue.divide. dividend / divisor Exceptions StandardException: Doc from org.apache.derby.iapi.types.NumberDataValue.divide. Thrown on error, if result is non-null then its value will be unchanged.

divide

back to summary

public NumberDataValue divide(NumberDataValue dividend, NumberDataValue divisor, NumberDataValue result, int scale) throws StandardException

Implements org.apache.derby.iapi.types.NumberDataValue.divide.

Suitable for integral types that ignore scale.

Parameters

dividend:NumberDataValue

Doc from org.apache.derby.iapi.types.NumberDataValue.divide.

The numerator

divisor:NumberDataValue

Doc from org.apache.derby.iapi.types.NumberDataValue.divide.

The denominator

result:NumberDataValue

Doc from org.apache.derby.iapi.types.NumberDataValue.divide.

The result of the previous call to this method, null if not called yet.

scale:int

Doc from org.apache.derby.iapi.types.NumberDataValue.divide.

The scale of the result, for decimal type. If pass in value < 0, can calculate it dynamically.

Returns:NumberDataValue

Doc from org.apache.derby.iapi.types.NumberDataValue.divide.

dividend / divisor

Exceptions

StandardException:

Doc from org.apache.derby.iapi.types.NumberDataValue.divide.

Thrown on error, if result is non-null then its value will be unchanged.

getContextOrNull	back to summary
private static Context getContextOrNull(final String contextID) Must be private so that user code can't call this entry point.

isNegative	back to summary
protected abstract boolean isNegative() The isNegative abstract method. Checks to see if this.value is negative. To be implemented by each NumberDataType. Returns:boolean A boolean. If this.value is negative, return true. For positive values or null, return false.

isNegative

back to summary

protected abstract boolean isNegative()

The isNegative abstract method. Checks to see if this.value is negative. To be implemented by each NumberDataType.

Returns:boolean: A boolean. If this.value is negative, return true. For positive values or null, return false.

minus	back to summary
public NumberDataValue minus(NumberDataValue left, NumberDataValue right, NumberDataValue result) throws StandardException Implements org.apache.derby.iapi.types.NumberDataValue.minus. This method implements the - operator for TINYINT, SMALLINT and INTEGER. Parameters left:NumberDataValue The value to be subtracted from right:NumberDataValue The value to be subtracted result:NumberDataValue The result of a previous call to this method, null if not called yet Returns:NumberDataValue A SQLInteger containing the result of the subtraction Exceptions StandardException: Thrown on error

minus

back to summary

public NumberDataValue minus(NumberDataValue left, NumberDataValue right, NumberDataValue result) throws StandardException

Implements org.apache.derby.iapi.types.NumberDataValue.minus.

This method implements the - operator for TINYINT, SMALLINT and INTEGER.

Parameters

left:NumberDataValue: The value to be subtracted from
right:NumberDataValue: The value to be subtracted
result:NumberDataValue: The result of a previous call to this method, null if not called yet

Returns:NumberDataValue

A SQLInteger containing the result of the subtraction

Exceptions

StandardException:: Thrown on error

mod	back to summary
public NumberDataValue mod(NumberDataValue dividend, NumberDataValue divisor, NumberDataValue result) throws StandardException Implements org.apache.derby.iapi.types.NumberDataValue.mod. Doc from org.apache.derby.iapi.types.NumberDataValue.mod. The SQL mod operator. Parameters dividend:NumberDataValue The numerator divisor:NumberDataValue The denominator result:NumberDataValue The result of the previous call to this method, null if not called yet. Returns:NumberDataValue dividend / divisor Exceptions StandardException: Thrown on error, if result is non-null then its value will be unchanged.

mod

back to summary

public NumberDataValue mod(NumberDataValue dividend, NumberDataValue divisor, NumberDataValue result) throws StandardException

Implements org.apache.derby.iapi.types.NumberDataValue.mod.

Doc from org.apache.derby.iapi.types.NumberDataValue.mod.

The SQL mod operator.

Parameters

dividend:NumberDataValue: The numerator
divisor:NumberDataValue: The denominator
result:NumberDataValue: The result of the previous call to this method, null if not called yet.

Returns:NumberDataValue

dividend / divisor

Exceptions

StandardException:: Thrown on error, if result is non-null then its value will be unchanged.

normalizeDOUBLE	back to summary
public static double normalizeDOUBLE(double v) throws StandardException normalizeDOUBLE normalizes the value, so that negative zero (-0.0) becomes positive. Exceptions StandardException: if v is not a number (NaN) or is infinite.

normalizeDOUBLE

back to summary

public static double normalizeDOUBLE(double v) throws StandardException

normalizeDOUBLE normalizes the value, so that negative zero (-0.0) becomes positive.

Exceptions

StandardException:: if v is not a number (NaN) or is infinite.

normalizeREAL	back to summary
public static float normalizeREAL(float v) throws StandardException normalizeREAL normalizes the value, so that negative zero (-0.0) becomes positive. Exceptions StandardException: if the value is not a number (NaN) or is infinite.

normalizeREAL

back to summary

public static float normalizeREAL(float v) throws StandardException

normalizeREAL normalizes the value, so that negative zero (-0.0) becomes positive.

Exceptions

StandardException:: if the value is not a number (NaN) or is infinite.

normalizeREAL back to summary

normalizeREAL	back to summary
public static float normalizeREAL(final double v) throws StandardException normalizeREAL normalizes the value, so that negative zero (-0.0) becomes positive. The reason for having normalizeREAL with two signatures is to avoid that normalizeREAL is accidentally called with a casted `(float)<double value>` since this can introduce an undetected underflow values to 0.0f. Exceptions StandardException: if the value is not a number (NaN) or is infinite or on underflow (the value has magnitude too small to be represented as a float).

public static float normalizeREAL(final double v) throws StandardException

normalizeREAL normalizes the value, so that negative zero (-0.0) becomes positive.

The reason for having normalizeREAL with two signatures is to avoid that normalizeREAL is accidentally called with a casted (float)<double value> since this can introduce an undetected underflow values to 0.0f.

Exceptions

StandardException:: if the value is not a number (NaN) or is infinite or on underflow (the value has magnitude too small to be represented as a float).

objectNull	back to summary
protected final boolean objectNull(Object o)

plus	back to summary
public NumberDataValue plus(NumberDataValue addend1, NumberDataValue addend2, NumberDataValue result) throws StandardException Implements org.apache.derby.iapi.types.NumberDataValue.plus. This method implements the + operator for TINYINT,SMALLINT,INT. Parameters addend1:NumberDataValue One of the addends addend2:NumberDataValue The other addend result:NumberDataValue The result of a previous call to this method, null if not called yet Returns:NumberDataValue A NumberDataValue containing the result of the addition Exceptions StandardException: Thrown on error

plus

back to summary

public NumberDataValue plus(NumberDataValue addend1, NumberDataValue addend2, NumberDataValue result) throws StandardException

Implements org.apache.derby.iapi.types.NumberDataValue.plus.

This method implements the + operator for TINYINT,SMALLINT,INT.

Parameters

addend1:NumberDataValue: One of the addends
addend2:NumberDataValue: The other addend
result:NumberDataValue: The result of a previous call to this method, null if not called yet

Returns:NumberDataValue

A NumberDataValue containing the result of the addition

Exceptions

StandardException:: Thrown on error

setBigDecimal	back to summary
public void setBigDecimal(BigDecimal bigDecimal) throws StandardException Overrides org.apache.derby.iapi.types.DataType.setBigDecimal. Implements org.apache.derby.iapi.types.DataValueDescriptor.setBigDecimal. setValue for integral exact numerics. Converts the BigDecimal to a long to preserve precision Parameters bigDecimal:BigDecimal Doc from org.apache.derby.iapi.types.DataValueDescriptor.setBigDecimal. required to be a BigDecimal or null.

setBigDecimal

back to summary

public void setBigDecimal(BigDecimal bigDecimal) throws StandardException

Overrides org.apache.derby.iapi.types.DataType.setBigDecimal.

Implements org.apache.derby.iapi.types.DataValueDescriptor.setBigDecimal.

setValue for integral exact numerics. Converts the BigDecimal to a long to preserve precision

Parameters

bigDecimal:BigDecimal

Doc from org.apache.derby.iapi.types.DataValueDescriptor.setBigDecimal.

required to be a BigDecimal or null.

setObject	back to summary
pack-priv void setObject(Object theValue) throws StandardException Overrides org.apache.derby.iapi.types.DataType.setObject. Set the value from a correctly typed Integer object. Used for TINYINT, SMALLINT, INTEGER.

setObject

back to summary

pack-priv void setObject(Object theValue) throws StandardException

Overrides org.apache.derby.iapi.types.DataType.setObject.

Set the value from a correctly typed Integer object. Used for TINYINT, SMALLINT, INTEGER.

setValue	back to summary
public void setValue(short theValue) throws StandardException Overrides org.apache.derby.iapi.types.DataType.setValue. Implements org.apache.derby.iapi.types.DataValueDescriptor.setValue. Common code to handle converting a short to this value by using the int to this value conversion. Simply calls setValue(int). Parameters theValue:short Doc from org.apache.derby.iapi.types.DataValueDescriptor.setValue. The value to set this DataValueDescriptor to Exceptions StandardException: Doc from org.apache.derby.iapi.types.DataValueDescriptor.setValue. Thrown on error

setValue

back to summary

public void setValue(short theValue) throws StandardException

Overrides org.apache.derby.iapi.types.DataType.setValue.

Implements org.apache.derby.iapi.types.DataValueDescriptor.setValue.

Common code to handle converting a short to this value by using the int to this value conversion. Simply calls setValue(int).

Parameters

theValue:short

Doc from org.apache.derby.iapi.types.DataValueDescriptor.setValue.

The value to set this DataValueDescriptor to

Exceptions

StandardException:

Doc from org.apache.derby.iapi.types.DataValueDescriptor.setValue.

Thrown on error

setValue	back to summary
public void setValue(byte theValue) throws StandardException Overrides org.apache.derby.iapi.types.DataType.setValue. Implements org.apache.derby.iapi.types.DataValueDescriptor.setValue. Common code to handle converting a byte to this value by using the int to this value conversion. Simply calls setValue(int). Parameters theValue:byte Doc from org.apache.derby.iapi.types.DataValueDescriptor.setValue. The value to set this DataValueDescriptor to Exceptions StandardException: Doc from org.apache.derby.iapi.types.DataType.setValue. Thrown on error

setValue

back to summary

public void setValue(byte theValue) throws StandardException

Overrides org.apache.derby.iapi.types.DataType.setValue.

Implements org.apache.derby.iapi.types.DataValueDescriptor.setValue.

Common code to handle converting a byte to this value by using the int to this value conversion. Simply calls setValue(int).

Parameters

theValue:byte

Doc from org.apache.derby.iapi.types.DataValueDescriptor.setValue.

The value to set this DataValueDescriptor to

Exceptions

StandardException:

Doc from org.apache.derby.iapi.types.DataType.setValue.

Thrown on error

setValue back to summary

setValue	back to summary
public void setValue(Number theValue) throws StandardException Implements org.apache.derby.iapi.types.NumberDataValue.setValue. Common code to handle java.lang.Integer as a Number, used for TINYINT, SMALLINT, INTEGER Parameters theValue:Number Doc from org.apache.derby.iapi.types.NumberDataValue.setValue. An Number containing the value to set this NumberDataValue to. Null means set the value to SQL null. Exceptions StandardException: Thrown on error See Also `NumberDataValue#setValue`

public void setValue(Number theValue) throws StandardException

Implements org.apache.derby.iapi.types.NumberDataValue.setValue.

Common code to handle java.lang.Integer as a Number, used for TINYINT, SMALLINT, INTEGER

Parameters

theValue:Number

Doc from org.apache.derby.iapi.types.NumberDataValue.setValue.

An Number containing the value to set this NumberDataValue to. Null means set the value to SQL null.

Exceptions

StandardException:: Thrown on error

See Also

NumberDataValue#setValue

sqrt	back to summary
public NumberDataValue sqrt(NumberDataValue result) throws StandardException Implements org.apache.derby.iapi.types.NumberDataValue.sqrt. This is the sqrt method. Parameters result:NumberDataValue Doc from org.apache.derby.iapi.types.NumberDataValue.sqrt. The result of the previous call to this method, null if not call yet. Returns:NumberDataValue this object's sqrt value. Null if object is null. Note -0.0f and -0.0d returns 0.0f and 0.0d. Exceptions StandardException: thrown on a negative number.

sqrt

back to summary

public NumberDataValue sqrt(NumberDataValue result) throws StandardException

Implements org.apache.derby.iapi.types.NumberDataValue.sqrt.

This is the sqrt method.

Parameters

result:NumberDataValue

Doc from org.apache.derby.iapi.types.NumberDataValue.sqrt.

The result of the previous call to this method, null if not call yet.

Returns:NumberDataValue

this object's sqrt value. Null if object is null.

Note

-0.0f and -0.0d returns 0.0f and 0.0d.

Exceptions

StandardException:: thrown on a negative number.

typeCompare	back to summary
protected abstract int typeCompare(DataValueDescriptor arg) throws StandardException Compare this (not null) to a non-null value. Exceptions StandardException: Thrown on error

typeCompare

back to summary

protected abstract int typeCompare(DataValueDescriptor arg) throws StandardException

Compare this (not null) to a non-null value.

Exceptions

StandardException:: Thrown on error

typeToBigDecimal	back to summary
public int typeToBigDecimal() Overrides org.apache.derby.iapi.types.DataType.typeToBigDecimal. Implements org.apache.derby.iapi.types.DataValueDescriptor.typeToBigDecimal. Implementation for integral types. Convert to a BigDecimal using long Returns:int Doc from org.apache.derby.iapi.types.DataValueDescriptor.typeToBigDecimal. Types.CHAR for String conversion through getString Types.DECIMAL for BigDecimal through getObject or Types.BIGINT for long conversion through getLong

typeToBigDecimal

back to summary

public int typeToBigDecimal()

Overrides org.apache.derby.iapi.types.DataType.typeToBigDecimal.

Implements org.apache.derby.iapi.types.DataValueDescriptor.typeToBigDecimal.

Implementation for integral types. Convert to a BigDecimal using long

Returns:int

Doc from org.apache.derby.iapi.types.DataValueDescriptor.typeToBigDecimal.

Types.CHAR for String conversion through getString Types.DECIMAL for BigDecimal through getObject or Types.BIGINT for long conversion through getLong

useDB2Limits	back to summary
private static boolean useDB2Limits() throws StandardException Controls use of old DB2 limits (DERBY-3398). Returns:boolean false if dictionary is new enough, see DD_Version.

useDB2Limits

back to summary

private static boolean useDB2Limits() throws StandardException

Controls use of old DB2 limits (DERBY-3398).

Returns:boolean: false if dictionary is new enough, see DD_Version.

public abstract Class NumberDataType

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail