RowDataType (H2 Database Engine 2.0.0 API)

java.lang.Object
- org.h2.mvstore.type.BasicDataType<SearchRow>
- - org.h2.mvstore.db.RowDataType

所有已实现的接口:

Comparator<SearchRow>, DataType<SearchRow>, StatefulDataType<Database>
```
public final class RowDataType
extends BasicDataType<SearchRow>
implements StatefulDataType<Database>
```
The data type for rows.

作者:

Andrei Tokar

嵌套类概要

嵌套类
限定符和类型类和说明

static class RowDataType.Factory

嵌套类
限定符和类型	类和说明
`static class`	`RowDataType.Factory`

构造器概要

构造器
构造器和说明
`RowDataType(CastDataProvider provider, CompareMode compareMode, DataHandler handler, int[] sortTypes, int[] indexes, int columnCount, boolean storeKeys)`

方法概要

所有方法实例方法具体方法
限定符和类型	方法和说明
`int`	`binarySearch(SearchRow key, Object storage, int size, int initialGuess)` Perform binary search for the key within the storage
`int`	`binarySearch(SearchRow key, SearchRow[] keys, int size, int initialGuess)`
`int`	`compare(SearchRow a, SearchRow b)` Compare two keys.
`SearchRow[]`	`createStorage(int capacity)` Create storage object of array type to hold values
`boolean`	`equals(Object obj)`
`int`	`getColumnCount()`
`RowDataType.Factory`	`getFactory()`
`int[]`	`getIndexes()`
`int`	`getMemory(SearchRow row)` Calculates the amount of used memory in bytes.
`RowFactory`	`getRowFactory()`
`int`	`hashCode()`
`boolean`	`isStoreKeys()`
`SearchRow`	`read(ByteBuffer buff)` Read an object.
`void`	`save(WriteBuffer buff, MetaType<Database> metaType)` Save the state.
`void`	`setRowFactory(RowFactory rowFactory)`
`void`	`write(WriteBuffer buff, SearchRow row)` Write an object.

从类继承的方法 org.h2.mvstore.type.BasicDataType
cast, isMemoryEstimationAllowed, read, write

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

从接口继承的方法 java.util.Comparator
comparing, comparing, comparingDouble, comparingInt, comparingLong, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

- 构造器详细资料
  - RowDataType
```
public RowDataType(CastDataProvider provider,
                   CompareMode compareMode,
                   DataHandler handler,
                   int[] sortTypes,
                   int[] indexes,
                   int columnCount,
                   boolean storeKeys)
```
- 方法详细资料
  - getIndexes
```
public int[] getIndexes()
```
  - getRowFactory
```
public RowFactory getRowFactory()
```
  - setRowFactory
```
public void setRowFactory(RowFactory rowFactory)
```
  - getColumnCount
```
public int getColumnCount()
```
  - isStoreKeys
```
public boolean isStoreKeys()
```
  - createStorage
```
public SearchRow[] createStorage(int capacity)
```
    从接口复制的说明: DataType
    
    Create storage object of array type to hold values
    
    指定者:
    
    createStorage 在接口中 DataType<SearchRow>
    
    参数:
    
    capacity - number of values to hold
    
    返回:
    
    storage object
  - compare
```
public int compare(SearchRow a,
                   SearchRow b)
```
    从接口复制的说明: DataType
    
    Compare two keys.
    
    指定者:
    
    compare 在接口中 Comparator<SearchRow>
    
    指定者:
    
    compare 在接口中 DataType<SearchRow>
    
    覆盖:
    
    compare 在类中 BasicDataType<SearchRow>
    
    参数:
    
    a - the first key
    
    b - the second key
    
    返回:
    
    -1 if the first key is smaller, 1 if larger, and 0 if equal
  - binarySearch
```
public int binarySearch(SearchRow key,
                        Object storage,
                        int size,
                        int initialGuess)
```
    从接口复制的说明: DataType
    
    Perform binary search for the key within the storage
    
    指定者:
    
    binarySearch 在接口中 DataType<SearchRow>
    
    覆盖:
    
    binarySearch 在类中 BasicDataType<SearchRow>
    
    参数:
    
    key - to search for
    
    storage - to search within (an array of type T)
    
    size - number of data items in the storage
    
    initialGuess - for key position
    
    返回:
    
    index of the key , if found, - index of the insertion point, if not
  - binarySearch
```
public int binarySearch(SearchRow key,
                        SearchRow[] keys,
                        int size,
                        int initialGuess)
```
  - getMemory
```
public int getMemory(SearchRow row)
```
    从接口复制的说明: DataType
    
    Calculates the amount of used memory in bytes.
    
    指定者:
    
    getMemory 在接口中 DataType<SearchRow>
    
    指定者:
    
    getMemory 在类中 BasicDataType<SearchRow>
    
    参数:
    
    row - the object
    
    返回:
    
    the used memory
  - read
```
public SearchRow read(ByteBuffer buff)
```
    从接口复制的说明: DataType
    
    Read an object.
    
    指定者:
    
    read 在接口中 DataType<SearchRow>
    
    指定者:
    
    read 在类中 BasicDataType<SearchRow>
    
    参数:
    
    buff - the source buffer
    
    返回:
    
    the object
  - write
```
public void write(WriteBuffer buff,
                  SearchRow row)
```
    从接口复制的说明: DataType
    
    Write an object.
    
    指定者:
    
    write 在接口中 DataType<SearchRow>
    
    指定者:
    
    write 在类中 BasicDataType<SearchRow>
    
    参数:
    
    buff - the target buffer
    
    row - the value
  - equals
```
public boolean equals(Object obj)
```
    指定者:
    
    equals 在接口中 Comparator<SearchRow>
    
    覆盖:
    
    equals 在类中 BasicDataType<SearchRow>
  - hashCode
```
public int hashCode()
```
    覆盖:
    
    hashCode 在类中 BasicDataType<SearchRow>
  - save
```
public void save(WriteBuffer buff,
                 MetaType<Database> metaType)
```
    从接口复制的说明: StatefulDataType
    
    Save the state.
    
    指定者:
    
    save 在接口中 StatefulDataType<Database>
    
    参数:
    
    buff - the target buffer
    
    metaType - the meta type
  - getFactory
```
public RowDataType.Factory getFactory()
```
    指定者:
    
    getFactory 在接口中 StatefulDataType<Database>

类 RowDataType

嵌套类概要

构造器概要

方法概要

从类继承的方法 org.h2.mvstore.type.BasicDataType

从类继承的方法 java.lang.Object

从接口继承的方法 java.util.Comparator

构造器详细资料

RowDataType

方法详细资料

getIndexes

getRowFactory

setRowFactory

getColumnCount

isStoreKeys

createStorage

compare

binarySearch

binarySearch

getMemory

read

write

equals

hashCode

save

getFactory