AbstractExportDumpObject (GuttenBase - The database copying and migration framework 2.1.0 API)

java.lang.Object
- de.akquinet.jbosscc.guttenbase.export.AbstractExportDumpObject

All Implemented Interfaces:

Externalizable, Serializable

Direct Known Subclasses:

ExportDumpBlob, ExportDumpClob, ExportDumpSqlXML
```
public abstract class AbstractExportDumpObject
extends Object
implements Externalizable
```
Since CLOBs/BLOBs may be quite big. we do not load them into memory completely, but read them in chunks and write the data to the output stream in a loop.
© 2012-2034 akquinet tech@spree

Author:

M. Dahm

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type Field Description

static int DEFAULT_BUFFER_SIZE

Constructor Summary

Constructors
Constructor Description

AbstractExportDumpObject()

AbstractExportDumpObject(InputStream inputStream)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`free()`
`InputStream`	`getBinaryStream()`
`InputStream`	`getBinaryStream(long pos, long length)`
`byte[]`	`getBytes(long pos, int length)`
`long`	`length()`
`void`	`readExternal(ObjectInput input)`	Store read data in temporary file to avoid out of memory errors.
`void`	`writeExternal(ObjectOutput output)`	Read data in chunks and write it to the outputstream to avoid out of memory errors.

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

Field Detail
- DEFAULT_BUFFER_SIZE
```
public static final int DEFAULT_BUFFER_SIZE
```
  See Also:
  
  Constant Field Values

Constructor Detail

AbstractExportDumpObject
```
public AbstractExportDumpObject()
```

AbstractExportDumpObject

public AbstractExportDumpObject(InputStream inputStream)

Method Detail

writeExternal
```
public void writeExternal(ObjectOutput output)
                   throws IOException
```
Read data in chunks and write it to the outputstream to avoid out of memory errors.

Specified by:

writeExternal in interface Externalizable

Throws:

IOException

readExternal
```
public void readExternal(ObjectInput input)
                  throws IOException,
                         ClassNotFoundException
```
Store read data in temporary file to avoid out of memory errors.

Specified by:

readExternal in interface Externalizable

Throws:

IOException

ClassNotFoundException

length
```
public long length()
```

getBytes

public byte[] getBytes(long pos,
                       int length)

getBinaryStream
```
public InputStream getBinaryStream()
```

getBinaryStream

public InputStream getBinaryStream(long pos,
                                   long length)

free
```
public final void free()
```