ValueDouble (H2 Database Engine wt-1.0.1 API)

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

```
public class ValueDouble
extends Value
```
Implementation of the DOUBLE 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 int`	`DISPLAY_SIZE` The maximum display size of a double.
`static int`	`PRECISION` The precision in digits.
`static long`	`ZERO_BITS` Double.doubleToLongBits(0.0)

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

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.
`protected int`	`compareSecure(Value o, CompareMode mode)` Compare the value with another value of the same type.
`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 ValueDouble`	`get(double d)` Get or create double value for the given double.
`int`	`getDisplaySize()` Get the display size in characters.
`double`	`getDouble()`
`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()`
`ValueDouble`	`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.
`Value`	`subtract(Value v)` Subtract a value and return the result.

从类继承的方法 org.h2.value.Value
checkPrecision, clearCache, compareTo, compareTypeSafe, convertPrecision, convertScale, convertTo, copy, copyToResult, copyToTemp, getBigDecimal, getBoolean, getByte, getBytes, getBytesNoCopy, getDataHandler, getDate, getFloat, getHigherOrder, getInputStream, getInt, getLong, getMemory, 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
  - PRECISION
```
public static final int PRECISION
```
    The precision in digits.
    
    另请参阅:
    
    常量字段值
  - DISPLAY_SIZE
```
public static final int DISPLAY_SIZE
```
    The maximum display size of a double. Example: -3.3333333333333334E-100
    
    另请参阅:
    
    常量字段值
  - ZERO_BITS
```
public static final long ZERO_BITS
```
    Double.doubleToLongBits(0.0)
- 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 ValueDouble 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
  - getDouble
```
public double getDouble()
```
    覆盖:
    
    getDouble 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
  - 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
  - get
```
public static ValueDouble get(double d)
```
    Get or create double value for the given double.
    
    参数:
    
    d - the double
    
    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

类 ValueDouble

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

PRECISION

DISPLAY_SIZE

ZERO_BITS

方法详细资料

add

subtract

negate

multiply

divide

modulus

getSQL

getType

compareSecure

getSignum

getDouble

getString

getPrecision

getScale

hashCode

getObject

set

get

getDisplaySize

equals