org.h2.value

Class ValueEnumBase

java.lang.Object

org.h2.value.VersionedValue

org.h2.value.Value

org.h2.value.ValueEnumBase

Direct Known Subclasses:

ValueEnum

public class ValueEnumBase
extends Value

Base implementation of the ENUM data type. Currently, this class is used primarily for client-server communication.

Field Summary

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

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ValueEnumBase(java.lang.String label, int ordinal)

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.
protected Value	convertTo(int targetType, Mode mode, java.lang.Object column, ExtTypeInfo extTypeInfo) Convert a value to the specified type.
Value	divide(Value v) Divide by a value and return the result.
boolean	equals(java.lang.Object other) Check if the two values have the same hash code.
static ValueEnumBase	get(java.lang.String label, int ordinal) Get or create an enum value with the given label and ordinal.
int	getInt()
long	getLong()
int	getMemory() Get the memory used by this object.
java.lang.Object	getObject() Get the value as an object.
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()
Value	modulus(Value v) Take the modulus with a value and return the result.
Value	multiply(Value v) Multiply with a value and return the result.
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, convertScale, convertTo, convertTo, convertTo, convertToInt, copy, copyToResult, copyToTemp, getBigDecimal, getBoolean, getByte, getBytes, getBytesNoCopy, getDataHandler, getDate, getDouble, getFloat, getHigherOrder, getHigherType, getInputStream, getInputStream, getReader, getReader, getResult, getShort, getSmall, getSQL, getTableId, getTime, getTimestamp, getTraceSQL, getUnsupportedExceptionForOperation, isLinkedToTable, negate, 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

Constructor Detail

ValueEnumBase

protected ValueEnumBase(java.lang.String label,
             int ordinal)

Method Detail

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

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

divide

public Value divide(Value v)

Description copied from class: Value

Divide by a value and return the result.

Overrides:

divide in class Value

Parameters:

v - the value to divide by

Returns:

the result

equals

public boolean equals(java.lang.Object other)

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:

other - the other value

Returns:

true if they are equal

get

public static ValueEnumBase get(java.lang.String label,
                int ordinal)

Get or create an enum value with the given label and ordinal.

Parameters:

label - the label

ordinal - the ordinal

Returns:

the value

getInt

public int getInt()

Overrides:

getInt in class Value

getLong

public long getLong()

Overrides:

getLong in class Value

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

getSignum

public int getSignum()

Overrides:

getSignum in class Value

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

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

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

hashCode

public int hashCode()

Specified by:

hashCode in class Value

modulus

public Value modulus(Value v)

Description copied from class: Value

Take the modulus with a value and return the result.

Overrides:

modulus in class Value

Parameters:

v - the value to take the modulus with

Returns:

the result

multiply

public Value multiply(Value v)

Description copied from class: Value

Multiply with a value and return the result.

Overrides:

multiply in class Value

Parameters:

v - the value to multiply with

Returns:

the result

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

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

convertTo

protected Value convertTo(int targetType,
              Mode mode,
              java.lang.Object column,
              ExtTypeInfo extTypeInfo)

Description copied from class: Value

Convert a value to the specified type.

Overrides:

convertTo in class Value

Parameters:

targetType - the type of the returned value

mode - the conversion mode

column - the column (if any), used for to improve the error message if conversion fails

extTypeInfo - the extended data type information, or null

Returns:

the converted value