IntervalUtils (H2 Database Engine 2.0.0 API)

java.lang.Object
- org.h2.util.IntervalUtils

```
public class IntervalUtils
extends Object
```
This utility class contains interval conversion functions.

字段概要

字段
限定符和类型字段和说明

static BigInteger NANOS_PER_DAY_BI
The number of nanoseconds per day as BigInteger.

字段
限定符和类型	字段和说明
`static BigInteger`	`NANOS_PER_DAY_BI` The number of nanoseconds per day as BigInteger.

方法概要

所有方法静态方法具体方法
限定符和类型	方法和说明
`static StringBuilder`	`appendInterval(StringBuilder buff, IntervalQualifier qualifier, boolean negative, long leading, long remaining)` Formats interval as a string and appends it to a specified string builder.
`static long`	`daysFromInterval(IntervalQualifier qualifier, boolean negative, long leading, long remaining)` Returns days value of interval, if any.
`static long`	`hoursFromInterval(IntervalQualifier qualifier, boolean negative, long leading, long remaining)` Returns hours value of interval, if any.
`static ValueInterval`	`intervalFromAbsolute(IntervalQualifier qualifier, BigInteger absolute)` Converts absolute value to an interval value.
`static BigInteger`	`intervalToAbsolute(ValueInterval interval)` Converts interval value to an absolute value.
`static long`	`minutesFromInterval(IntervalQualifier qualifier, boolean negative, long leading, long remaining)` Returns minutes value of interval, if any.
`static long`	`monthsFromInterval(IntervalQualifier qualifier, boolean negative, long leading, long remaining)` Returns months value of interval, if any.
`static long`	`nanosFromInterval(IntervalQualifier qualifier, boolean negative, long leading, long remaining)` Returns nanoseconds value of interval, if any.
`static ValueInterval`	`parseFormattedInterval(IntervalQualifier qualifier, String s)` Parses the specified string as `INTERVAL` value.
`static ValueInterval`	`parseInterval(IntervalQualifier qualifier, boolean negative, String s)` Parses the specified string as `INTERVAL` value.
`static boolean`	`validateInterval(IntervalQualifier qualifier, boolean negative, long leading, long remaining)` Ensures that all fields in interval are valid.
`static long`	`yearsFromInterval(IntervalQualifier qualifier, boolean negative, long leading, long remaining)` Returns years value of interval, if any.

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

- 字段详细资料
  - NANOS_PER_DAY_BI
```
public static final BigInteger NANOS_PER_DAY_BI
```
    The number of nanoseconds per day as BigInteger.
- 方法详细资料
  - parseFormattedInterval
```
public static ValueInterval parseFormattedInterval(IntervalQualifier qualifier,
                                                   String s)
```
    Parses the specified string as INTERVAL value.
    
    参数:
    
    qualifier - the default qualifier to use if string does not have one
    
    s - the string with type information to parse
    
    返回:
    
    the interval value. Type of value can be different from the specified qualifier.
  - parseInterval
```
public static ValueInterval parseInterval(IntervalQualifier qualifier,
                                          boolean negative,
                                          String s)
```
    Parses the specified string as INTERVAL value.
    
    参数:
    
    qualifier - the qualifier of interval
    
    negative - whether the interval is negative
    
    s - the string to parse
    
    返回:
    
    the interval value
  - appendInterval
```
public static StringBuilder appendInterval(StringBuilder buff,
                                           IntervalQualifier qualifier,
                                           boolean negative,
                                           long leading,
                                           long remaining)
```
    Formats interval as a string and appends it to a specified string builder.
    
    参数:
    
    buff - string builder to append to
    
    qualifier - qualifier of the interval
    
    negative - whether interval is negative
    
    leading - the value of leading field
    
    remaining - the value of all remaining fields
    
    返回:
    
    the specified string builder
  - intervalToAbsolute
```
public static BigInteger intervalToAbsolute(ValueInterval interval)
```
    Converts interval value to an absolute value.
    
    参数:
    
    interval - the interval value
    
    返回:
    
    absolute value in months for year-month intervals, in nanoseconds for day-time intervals
  - intervalFromAbsolute
```
public static ValueInterval intervalFromAbsolute(IntervalQualifier qualifier,
                                                 BigInteger absolute)
```
    Converts absolute value to an interval value.
    
    参数:
    
    qualifier - the qualifier of interval
    
    absolute - absolute value in months for year-month intervals, in nanoseconds for day-time intervals
    
    返回:
    
    the interval value
  - validateInterval
```
public static boolean validateInterval(IntervalQualifier qualifier,
                                       boolean negative,
                                       long leading,
                                       long remaining)
```
    Ensures that all fields in interval are valid.
    
    参数:
    
    qualifier - qualifier
    
    negative - whether interval is negative
    
    leading - value of leading field
    
    remaining - values of all remaining fields
    
    返回:
    
    fixed value of negative field
  - yearsFromInterval
```
public static long yearsFromInterval(IntervalQualifier qualifier,
                                     boolean negative,
                                     long leading,
                                     long remaining)
```
    Returns years value of interval, if any.
    
    参数:
    
    qualifier - qualifier
    
    negative - whether interval is negative
    
    leading - value of leading field
    
    remaining - values of all remaining fields
    
    返回:
    
    years, or 0
  - monthsFromInterval
```
public static long monthsFromInterval(IntervalQualifier qualifier,
                                      boolean negative,
                                      long leading,
                                      long remaining)
```
    Returns months value of interval, if any.
    
    参数:
    
    qualifier - qualifier
    
    negative - whether interval is negative
    
    leading - value of leading field
    
    remaining - values of all remaining fields
    
    返回:
    
    months, or 0
  - daysFromInterval
```
public static long daysFromInterval(IntervalQualifier qualifier,
                                    boolean negative,
                                    long leading,
                                    long remaining)
```
    Returns days value of interval, if any.
    
    参数:
    
    qualifier - qualifier
    
    negative - whether interval is negative
    
    leading - value of leading field
    
    remaining - values of all remaining fields
    
    返回:
    
    days, or 0
  - hoursFromInterval
```
public static long hoursFromInterval(IntervalQualifier qualifier,
                                     boolean negative,
                                     long leading,
                                     long remaining)
```
    Returns hours value of interval, if any.
    
    参数:
    
    qualifier - qualifier
    
    negative - whether interval is negative
    
    leading - value of leading field
    
    remaining - values of all remaining fields
    
    返回:
    
    hours, or 0
  - minutesFromInterval
```
public static long minutesFromInterval(IntervalQualifier qualifier,
                                       boolean negative,
                                       long leading,
                                       long remaining)
```
    Returns minutes value of interval, if any.
    
    参数:
    
    qualifier - qualifier
    
    negative - whether interval is negative
    
    leading - value of leading field
    
    remaining - values of all remaining fields
    
    返回:
    
    minutes, or 0
  - nanosFromInterval
```
public static long nanosFromInterval(IntervalQualifier qualifier,
                                     boolean negative,
                                     long leading,
                                     long remaining)
```
    Returns nanoseconds value of interval, if any.
    
    参数:
    
    qualifier - qualifier
    
    negative - whether interval is negative
    
    leading - value of leading field
    
    remaining - values of all remaining fields
    
    返回:
    
    nanoseconds, or 0

类 IntervalUtils

字段概要

方法概要

从类继承的方法 java.lang.Object

字段详细资料

NANOS_PER_DAY_BI

方法详细资料

parseFormattedInterval

parseInterval

appendInterval

intervalToAbsolute

intervalFromAbsolute

validateInterval

yearsFromInterval

monthsFromInterval

daysFromInterval

hoursFromInterval

minutesFromInterval

nanosFromInterval