ValueDecimal (H2 Database Engine wt-1.0.1 API)

java.lang.Object
- org.h2.value.Value
- - org.h2.value.ValueDecimal

```
public class ValueDecimal
extends Value
```
Implementation of the DECIMAL data type.

嵌套类概要
- 从类继承的嵌套类/接口 org.h2.value.Value
  Value.ValueBlob, Value.ValueClob

字段概要

字段
限定符和类型字段和说明

static Object ONE
The value 'one'.

static Object ZERO
The value 'zero'.
- 从类继承的字段 org.h2.value.Value
  ARRAY, BLOB, BOOLEAN, BYTE, BYTES, CLOB, DATE, DECIMAL, DOUBLE, FLOAT, GEOMETRY, INT, JAVA_OBJECT, LONG, NULL, RESULT_SET, SHORT, STRING, STRING_FIXED, STRING_IGNORECASE, TIME, TIMESTAMP, TIMESTAMP_TZ, TYPE_COUNT, UNKNOWN, UUID

字段
限定符和类型	字段和说明
`static Object`	`ONE` The value 'one'.
`static Object`	`ZERO` The value 'zero'.

方法概要

所有方法静态方法实例方法具体方法
限定符和类型	方法和说明
`Value`	`add(Value v)` Add a value and return the result.
`boolean`	`checkPrecision(long prec)` Check if the precision is smaller or equal than the given precision.
`protected int`	`compareSecure(Value o, CompareMode mode)` Compare the value with another value of the same type.
`Value`	`convertPrecision(long precision, boolean force)` Convert the precision to the requested value.
`Value`	`convertScale(boolean onlyToSmallerScale, int targetScale)` Convert the scale.
`Value`	`divide(Value v)` Divide by a value and return the result.
`boolean`	`equals(Object other)` Check if the two values have the same hash code.
`static ValueDecimal`	`get(BigDecimal dec)` Get or create big decimal value for the given big decimal.
`BigDecimal`	`getBigDecimal()`
`int`	`getDisplaySize()` Get the display size in characters.
`int`	`getMemory()` Get the memory used by this object.
`Object`	`getObject()` Get the value as an object.
`long`	`getPrecision()` Get the precision.
`int`	`getScale()`
`int`	`getSignum()`
`String`	`getSQL()` Get the SQL expression for this value.
`String`	`getString()` Get the value as a string.
`int`	`getType()` Get the value type.
`int`	`hashCode()`
`ValueDecimal`	`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.
`Value`	`negate()` Return -value if this value support arithmetic operations.
`void`	`set(PreparedStatement prep, int parameterIndex)` Set the value as a parameter in a prepared statement.
`static BigDecimal`	`setScale(BigDecimal bd, int scale)` Set the scale of a BigDecimal value.
`Value`	`subtract(Value v)` Subtract a value and return the result.

从类继承的方法 org.h2.value.Value
clearCache, compareTo, compareTypeSafe, convertTo, copy, copyToResult, copyToTemp, getBoolean, getByte, getBytes, getBytesNoCopy, getDataHandler, getDate, getDouble, getFloat, getHigherOrder, getInputStream, getInt, getLong, getReader, getResultSet, getShort, getSmall, getTableId, getTime, getTimestamp, getTraceSQL, isLinkedToTable, remove, throwUnsupportedExceptionForType, toString

从类继承的方法 java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- 字段详细资料
  - ZERO
```
public static final Object ZERO
```
    The value 'zero'.
  - ONE
```
public static final Object ONE
```
    The value 'one'.
- 方法详细资料
  - add
```
public Value add(Value v)
```
    从类复制的说明: Value
    
    Add a value and return the result.
    
    覆盖:
    
    add 在类中 Value
    
    参数:
    
    v - the value to add
    
    返回:
    
    the result
  - subtract
```
public Value subtract(Value v)
```
    从类复制的说明: Value
    
    Subtract a value and return the result.
    
    覆盖:
    
    subtract 在类中 Value
    
    参数:
    
    v - the value to subtract
    
    返回:
    
    the result
  - negate
```
public Value negate()
```
    从类复制的说明: Value
    
    Return -value if this value support arithmetic operations.
    
    覆盖:
    
    negate 在类中 Value
    
    返回:
    
    the negative
  - multiply
```
public Value multiply(Value v)
```
    从类复制的说明: Value
    
    Multiply with a value and return the result.
    
    覆盖:
    
    multiply 在类中 Value
    
    参数:
    
    v - the value to multiply with
    
    返回:
    
    the result
  - divide
```
public Value divide(Value v)
```
    从类复制的说明: Value
    
    Divide by a value and return the result.
    
    覆盖:
    
    divide 在类中 Value
    
    参数:
    
    v - the value to divide by
    
    返回:
    
    the result
  - modulus
```
public ValueDecimal modulus(Value v)
```
    从类复制的说明: Value
    
    Take the modulus with a value and return the result.
    
    覆盖:
    
    modulus 在类中 Value
    
    参数:
    
    v - the value to take the modulus with
    
    返回:
    
    the result
  - getSQL
```
public String getSQL()
```
    从类复制的说明: Value
    
    Get the SQL expression for this value.
    
    指定者:
    
    getSQL 在类中 Value
    
    返回:
    
    the SQL expression
  - getType
```
public int getType()
```
    从类复制的说明: Value
    
    Get the value type.
    
    指定者:
    
    getType 在类中 Value
    
    返回:
    
    the type
  - compareSecure
```
protected int compareSecure(Value o,
                            CompareMode mode)
```
    从类复制的说明: Value
    
    Compare the value with another value of the same type.
    
    指定者:
    
    compareSecure 在类中 Value
    
    参数:
    
    o - the other value
    
    mode - the compare mode
    
    返回:
    
    0 if both values are equal, -1 if the other value is smaller, and 1 otherwise
  - getSignum
```
public int getSignum()
```
    覆盖:
    
    getSignum 在类中 Value
  - getBigDecimal
```
public BigDecimal getBigDecimal()
```
    覆盖:
    
    getBigDecimal 在类中 Value
  - getString
```
public String getString()
```
    从类复制的说明: Value
    
    Get the value as a string.
    
    指定者:
    
    getString 在类中 Value
    
    返回:
    
    the string
  - getPrecision
```
public long getPrecision()
```
    从类复制的说明: Value
    
    Get the precision.
    
    指定者:
    
    getPrecision 在类中 Value
    
    返回:
    
    the precision
  - checkPrecision
```
public boolean checkPrecision(long prec)
```
    从类复制的说明: Value
    
    Check if the precision is smaller or equal than the given precision.
    
    覆盖:
    
    checkPrecision 在类中 Value
    
    参数:
    
    prec - the maximum precision
    
    返回:
    
    true if the precision of this value is smaller or equal to the given precision
  - getScale
```
public int getScale()
```
    覆盖:
    
    getScale 在类中 Value
  - hashCode
```
public int hashCode()
```
    指定者:
    
    hashCode 在类中 Value
  - getObject
```
public Object getObject()
```
    从类复制的说明: Value
    
    Get the value as an object.
    
    指定者:
    
    getObject 在类中 Value
    
    返回:
    
    the object
  - set
```
public void set(PreparedStatement prep,
                int parameterIndex)
         throws SQLException
```
    从类复制的说明: Value
    
    Set the value as a parameter in a prepared statement.
    
    指定者:
    
    set 在类中 Value
    
    参数:
    
    prep - the prepared statement
    
    parameterIndex - the parameter index
    
    抛出:
    
    SQLException
  - convertScale
```
public Value convertScale(boolean onlyToSmallerScale,
                          int targetScale)
```
    从类复制的说明: Value
    
    Convert the scale.
    
    覆盖:
    
    convertScale 在类中 Value
    
    参数:
    
    onlyToSmallerScale - if the scale should not reduced
    
    targetScale - the requested scale
    
    返回:
    
    the value
  - convertPrecision
```
public Value convertPrecision(long precision,
                              boolean force)
```
    从类复制的说明: Value
    
    Convert the precision to the requested value. The precision of the returned value may be somewhat larger than requested, because values with a fixed precision are not truncated.
    
    覆盖:
    
    convertPrecision 在类中 Value
    
    参数:
    
    precision - the new precision
    
    force - true if losing numeric precision is allowed
    
    返回:
    
    the new value
  - get
```
public static ValueDecimal get(BigDecimal dec)
```
    Get or create big decimal value for the given big decimal.
    
    参数:
    
    dec - the bit decimal
    
    返回:
    
    the value
  - getDisplaySize
```
public int getDisplaySize()
```
    从类复制的说明: Value
    
    Get the display size in characters.
    
    指定者:
    
    getDisplaySize 在类中 Value
    
    返回:
    
    the display size
  - equals
```
public boolean equals(Object other)
```
    从类复制的说明: 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.
    
    指定者:
    
    equals 在类中 Value
    
    参数:
    
    other - the other value
    
    返回:
    
    true if they are equal
  - getMemory
```
public int getMemory()
```
    从类复制的说明: Value
    
    Get the memory used by this object.
    
    覆盖:
    
    getMemory 在类中 Value
    
    返回:
    
    the memory used in bytes
  - setScale
```
public static BigDecimal setScale(BigDecimal bd,
                                  int scale)
```
    Set the scale of a BigDecimal value.
    
    参数:
    
    bd - the BigDecimal value
    
    scale - the new scale
    
    返回:
    
    the scaled value

类 ValueDecimal

嵌套类概要

从类继承的嵌套类/接口 org.h2.value.Value

字段概要

从类继承的字段 org.h2.value.Value

方法概要

从类继承的方法 org.h2.value.Value

从类继承的方法 java.lang.Object

字段详细资料

ZERO

ONE

方法详细资料

add

subtract

negate

multiply

divide

modulus

getSQL

getType

compareSecure

getSignum

getBigDecimal

getString

getPrecision

checkPrecision

getScale

hashCode

getObject

set

convertScale

convertPrecision

get

getDisplaySize

equals

getMemory

setScale