Command (Quidem 0.11 API)

All Known Implementing Classes:

AbstractCommand, Quidem.SqlCommand
```
public interface Command
```
Command.

See Also:

AbstractCommand, CommandHandler

Nested Class Summary

Nested Classes
Modifier and Type Interface Description

static interface Command.Context
Execution context for a command.

static interface Command.ResultChecker

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`String`	`describe(Command.Context x)`	Returns a string describing this command.
`void`	`execute(Command.Context x, boolean execute)`	Executes this command.
`default @Nullable Command`	`merge(Command previousCommand)`	Merges this command with the previous command.

- Method Detail
  - describe
```
String describe(Command.Context x)
```
    Returns a string describing this command.
    For example: "OkCommand [sql: select * from emp]" or "SkipCommand".
    
    Parameters:
    
    x - Execution context
  - execute
```
void execute(Command.Context x,
             boolean execute)
      throws Exception
```
    Executes this command.
    
    Parameters:
    
    x - Execution context
    
    execute - Whether to execute (false if execution is disabled, say by an 'if')
    
    Throws:
    
    Exception - if command fails
  - merge
```
default @Nullable Command merge(Command previousCommand)
```
    Merges this command with the previous command. Returns null if merging is not possible.