org.h2.value

Class ValueInterval

java.lang.Object

org.h2.value.VersionedValue

org.h2.value.Value

org.h2.value.ValueInterval

public class ValueInterval
extends Value

Implementation of the INTERVAL data type.

Field Summary

Fields

Modifier and Type	Field and Description
static int	DEFAULT_PRECISION The default leading field precision for intervals.
static int	MAXIMUM_PRECISION The maximum leading field precision for intervals.
static int	MAXIMUM_SCALE The maximum scale for intervals with seconds.

Fields inherited from class org.h2.value.Value

ARRAY, BLOB, BOOLEAN, BYTE, BYTES, CLOB, DATE, DECIMAL, DOUBLE, ENUM, FLOAT, GEOMETRY, INT, 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, LONG, MIN_LONG_DECIMAL, NULL, RESULT_SET, ROW, SHORT, STRING, STRING_FIXED, STRING_IGNORECASE, TIME, TIMESTAMP, TIMESTAMP_TZ, TYPE_COUNT, UNKNOWN, UUID

Fields inherited from class org.h2.value.VersionedValue

DUMMY

Method Summary

Methods

Modifier and Type	Method and Description
Value	add(Value v) Add a value and return the result.
int	compareTypeSafe(Value v, CompareMode mode) Compare this value against another value given that the values are of the same data type.
Value	convertScale(boolean onlyToSmallerScale, int targetScale) Convert the scale.
boolean	equals(java.lang.Object obj) Check if the two values have the same hash code.
static ValueInterval	from(IntervalQualifier qualifier, boolean negative, long leading, long remaining) Create a ValueInterval instance.
static int	getDisplaySize(int type, int precision, int scale) Returns display size for the specified qualifier, precision and fractional seconds precision.
long	getLeading() Returns value of leading field of this interval.
int	getMemory() Get the memory used by this object.
java.lang.Object	getObject() Get the value as an object.
IntervalQualifier	getQualifier() Returns the interval qualifier.
long	getRemaining() Returns combined value of remaining fields of this interval.
int	getSignum()
java.lang.StringBuilder	getSQL(java.lang.StringBuilder builder) Appends the SQL expression for this value to the specified builder.
java.lang.String	getString() Get the value as a string.
TypeInfo	getType() Returns the data type.
int	getValueType() Get the value type.
int	hashCode()
boolean	isNegative() Returns where the interval is negative.
Value	negate() Return -value if this value support arithmetic operations.
void	set(java.sql.PreparedStatement prep, int parameterIndex) Set the value as a parameter in a prepared statement.
Value	subtract(Value v) Subtract a value and return the result.

Methods inherited from class org.h2.value.Value

checkPrecision, clearCache, compareTo, compareWithNull, containsNull, convertPrecision, convertTo, convertTo, convertTo, convertTo, convertToInt, copy, copyToResult, copyToTemp, divide, getBigDecimal, getBoolean, getByte, getBytes, getBytesNoCopy, getDataHandler, getDate, getDouble, getFloat, getHigherOrder, getHigherType, getInputStream, getInputStream, getInt, getLong, getReader, getReader, getResult, getShort, getSmall, getSQL, getTableId, getTime, getTimestamp, getTraceSQL, getUnsupportedExceptionForOperation, isLinkedToTable, modulus, multiply, remove, 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

Field Detail

DEFAULT_PRECISION

public static final int DEFAULT_PRECISION

The default leading field precision for intervals.

See Also:

Constant Field Values

MAXIMUM_PRECISION

public static final int MAXIMUM_PRECISION

The maximum leading field precision for intervals.

See Also:

Constant Field Values

MAXIMUM_SCALE

public static final int MAXIMUM_SCALE

The maximum scale for intervals with seconds.

See Also:

Constant Field Values

Method Detail

from

public static ValueInterval from(IntervalQualifier qualifier,
                 boolean negative,
                 long leading,
                 long remaining)

Create a ValueInterval instance.

Parameters:

qualifier - qualifier

negative - whether interval is negative

leading - value of leading field

remaining - values of all remaining fields

Returns:

interval value

getDisplaySize

public static int getDisplaySize(int type,
                 int precision,
                 int scale)

Returns display size for the specified qualifier, precision and fractional seconds precision.

Parameters:

type - the value type

precision - leading field precision

scale - fractional seconds precision. Ignored if specified type of interval does not have seconds.

Returns:

display size

getSQL

public java.lang.StringBuilder getSQL(java.lang.StringBuilder builder)

Description copied from class: Value

Appends the SQL expression for this value to the specified builder.

Specified by:

getSQL in class Value

Parameters:

builder - string builder

Returns:

the specified string builder

getType

public TypeInfo getType()

Description copied from class: Value

Returns the data type.

Specified by:

getType in class Value

Returns:

the data type

getValueType

public int getValueType()

Description copied from class: Value

Get the value type.

Specified by:

getValueType in class Value

Returns:

the value type

getMemory

public int getMemory()

Description copied from class: Value

Get the memory used by this object.

Overrides:

getMemory in class Value

Returns:

the memory used in bytes

convertScale

public Value convertScale(boolean onlyToSmallerScale,
                 int targetScale)

Description copied from class: Value

Convert the scale.

Overrides:

convertScale in class Value

Parameters:

onlyToSmallerScale - if the scale should not reduced

targetScale - the requested scale

Returns:

the value

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

getObject

public java.lang.Object getObject()

Description copied from class: Value

Get the value as an object.

Specified by:

getObject in class Value

Returns:

the object

getQualifier

public IntervalQualifier getQualifier()

Returns the interval qualifier.

Returns:

the interval qualifier

isNegative

public boolean isNegative()

Returns where the interval is negative.

Returns:

where the interval is negative

getLeading

public long getLeading()

Returns value of leading field of this interval. For SECOND intervals returns integer part of seconds.

Returns:

value of leading field

getRemaining

public long getRemaining()

Returns combined value of remaining fields of this interval. For SECOND intervals returns nanoseconds.

Returns:

combined value of remaining fields

set

public void set(java.sql.PreparedStatement prep,
       int parameterIndex)
         throws java.sql.SQLException

Description copied from class: Value

Set the value as a parameter in a prepared statement.

Specified by:

set in class Value

Parameters:

prep - the prepared statement

parameterIndex - the parameter index

Throws:

java.sql.SQLException

hashCode

public int hashCode()

Specified by:

hashCode in class Value

equals

public boolean equals(java.lang.Object obj)

Description copied from class: Value

Check if the two values have the same hash code. No data conversion is made; this method returns false if the other object is not of the same class. For some values, compareTo may return 0 even if equals return false. Example: ValueDecimal 0.0 and 0.00.

Specified by:

equals in class Value

Parameters:

obj - the other value

Returns:

true if they are equal

compareTypeSafe

public int compareTypeSafe(Value v,
                  CompareMode mode)

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

Returns:

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

getSignum

public int getSignum()

Overrides:

getSignum in class Value

add

public Value add(Value v)

Description copied from class: Value

Add a value and return the result.

Overrides:

add in class Value

Parameters:

v - the value to add

Returns:

the result

subtract

public Value subtract(Value v)

Description copied from class: Value

Subtract a value and return the result.

Overrides:

subtract in class Value

Parameters:

v - the value to subtract

Returns:

the result

negate

public Value negate()

Description copied from class: Value

Return -value if this value support arithmetic operations.

Overrides:

negate in class Value

Returns:

the negative