SessionInterface (H2 Database Engine wt-1.0.1 API)

所有超级接口:

AutoCloseable, Closeable

所有已知实现类:

Session, SessionRemote
```
public interface SessionInterface
extends Closeable
```
A local or remote session. A session represents a database connection.

方法概要

所有方法实例方法抽象方法
限定符和类型	方法和说明
`void`	`addTemporaryLob(Value v)` Add a temporary LOB, which is closed when the session commits.
`void`	`afterWriting()` Called after writing has ended.
`void`	`cancel()` Cancel the current or next command (called when closing a connection).
`void`	`close()` Roll back pending transactions and close the session.
`boolean`	`getAutoCommit()` Check if this session is in auto-commit mode.
`ArrayList<String>`	`getClusterServers()` Get the list of the cluster servers for this session.
`String`	`getCurrentSchemaName()` Get current schema as in `JdbcConnection.getSchema()`.
`DataHandler`	`getDataHandler()` Get the data handler object.
`int`	`getPowerOffCount()` Get the number of disk operations before power failure is simulated.
`Trace`	`getTrace()` Get the trace object
`boolean`	`hasPendingTransaction()` Check whether this session has a pending transaction.
`boolean`	`isClosed()` Check if close was called.
`boolean`	`isReconnectNeeded(boolean write)` Check if the database changed and therefore reconnecting is required.
`boolean`	`isRemote()` Check if this session is remote or embedded.
`CommandInterface`	`prepareCommand(String sql, int fetchSize)` Parse a command and prepare it for execution.
`SessionInterface`	`reconnect(boolean write)` Close the connection and open a new connection.
`void`	`setAutoCommit(boolean autoCommit)` Set the auto-commit mode.
`void`	`setCurrentSchemaName(String schema)` Set current schema as in `JdbcConnection.setSchema(String)`.
`void`	`setPowerOffCount(int i)` Set the number of disk operations before power failure is simulated.

- 方法详细资料
  - getClusterServers
```
ArrayList<String> getClusterServers()
```
    Get the list of the cluster servers for this session.
    
    返回:
    
    A list of "ip:port" strings for the cluster servers in this session.
  - prepareCommand
```
CommandInterface prepareCommand(String sql,
                                int fetchSize)
```
    Parse a command and prepare it for execution.
    
    参数:
    
    sql - the SQL statement
    
    fetchSize - the number of rows to fetch in one step
    
    返回:
    
    the prepared command
  - close
```
void close()
```
    Roll back pending transactions and close the session.
    
    指定者:
    
    close 在接口中 AutoCloseable
    
    指定者:
    
    close 在接口中 Closeable
  - getTrace
```
Trace getTrace()
```
    Get the trace object
    
    返回:
    
    the trace object
  - isClosed
```
boolean isClosed()
```
    Check if close was called.
    
    返回:
    
    if the session has been closed
  - getPowerOffCount
```
int getPowerOffCount()
```
    Get the number of disk operations before power failure is simulated. This is used for testing. If not set, 0 is returned
    
    返回:
    
    the number of operations, or 0
  - setPowerOffCount
```
void setPowerOffCount(int i)
```
    Set the number of disk operations before power failure is simulated. To disable the countdown, use 0.
    
    参数:
    
    i - the number of operations
  - getDataHandler
```
DataHandler getDataHandler()
```
    Get the data handler object.
    
    返回:
    
    the data handler
  - hasPendingTransaction
```
boolean hasPendingTransaction()
```
    Check whether this session has a pending transaction.
    
    返回:
    
    true if it has
  - cancel
```
void cancel()
```
    Cancel the current or next command (called when closing a connection).
  - isReconnectNeeded
```
boolean isReconnectNeeded(boolean write)
```
    Check if the database changed and therefore reconnecting is required.
    
    参数:
    
    write - if the next operation may be writing
    
    返回:
    
    true if reconnecting is required
  - reconnect
```
SessionInterface reconnect(boolean write)
```
    Close the connection and open a new connection.
    
    参数:
    
    write - if the next operation may be writing
    
    返回:
    
    the new connection
  - afterWriting
```
void afterWriting()
```
    Called after writing has ended. It needs to be called after isReconnectNeeded(true) returned false.
  - getAutoCommit
```
boolean getAutoCommit()
```
    Check if this session is in auto-commit mode.
    
    返回:
    
    true if the session is in auto-commit mode
  - setAutoCommit
```
void setAutoCommit(boolean autoCommit)
```
    Set the auto-commit mode. This call doesn't commit the current transaction.
    
    参数:
    
    autoCommit - the new value
  - addTemporaryLob
```
void addTemporaryLob(Value v)
```
    Add a temporary LOB, which is closed when the session commits.
    
    参数:
    
    v - the value
  - isRemote
```
boolean isRemote()
```
    Check if this session is remote or embedded.
    
    返回:
    
    true if this session is remote
  - setCurrentSchemaName
```
void setCurrentSchemaName(String schema)
```
    Set current schema as in JdbcConnection.setSchema(String).
    
    参数:
    
    schema - the schema name
  - getCurrentSchemaName
```
String getCurrentSchemaName()
```
    Get current schema as in JdbcConnection.getSchema().
    
    返回:
    
    the current schema name

接口 SessionInterface

方法概要

方法详细资料

getClusterServers

prepareCommand

close

getTrace

isClosed

getPowerOffCount

setPowerOffCount

getDataHandler

hasPendingTransaction

cancel

isReconnectNeeded

reconnect

afterWriting

getAutoCommit

setAutoCommit

addTemporaryLob

isRemote

setCurrentSchemaName

getCurrentSchemaName