DumpCommand (NanoDB SQL Relational Database 0.1-SNAPSHOT API)

java.lang.Object
- edu.caltech.nanodb.commands.Command
- - edu.caltech.nanodb.commands.DumpCommand

Direct Known Subclasses:

DumpIndexCommand, DumpTableCommand
```
public abstract class DumpCommand
extends Command
```
An abstract base-class that holds the common implementation of the various kinds of dump commands.

Nested Class Summary

Nested Classes
Modifier and Type Class Description

protected static class DumpCommand.TupleExporter
A tuple processor implementation used to dump each tuple.
- Nested classes/interfaces inherited from class edu.caltech.nanodb.commands.Command
  Command.Type

Field Summary

Fields
Modifier and Type	Field	Description
`protected java.lang.String`	`fileName`	The path and filename to dump the table data to, if desired.
`protected java.lang.String`	`format`	The data format to use when dumping the table data.

Fields inherited from class edu.caltech.nanodb.commands.Command
out

Constructor Summary

Constructors
Modifier Constructor Description

protected DumpCommand(java.lang.String fileName, java.lang.String format)

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`execute(NanoDBServer server)`	Actually performs the command.
`java.lang.String`	`getFilename()`
`java.lang.String`	`getFormat()`
`protected abstract PlanNode`	`prepareDumpPlan(NanoDBServer server)`

Methods inherited from class edu.caltech.nanodb.commands.Command
getCommandType

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail
- fileName
```
protected java.lang.String fileName
```
  The path and filename to dump the table data to, if desired.
- format
```
protected java.lang.String format
```
  The data format to use when dumping the table data.

Constructor Detail

DumpCommand

protected DumpCommand(java.lang.String fileName,
                      java.lang.String format)

Method Detail

getFilename
```
public java.lang.String getFilename()
```

getFormat
```
public java.lang.String getFormat()
```

execute
```
public void execute(NanoDBServer server)
             throws ExecutionException
```
Description copied from class: Command

Actually performs the command.

Specified by:

execute in class Command

Throws:

ExecutionException - if an issue occurs during command execution

prepareDumpPlan

protected abstract PlanNode prepareDumpPlan(NanoDBServer server)