freemarker.template
Class BinaryData

java.lang.Object
  freemarker.template.BinaryData

All Implemented Interfaces:

Cacheable, Compileable, java.io.Serializable, java.lang.Cloneable

public class BinaryData
extends java.lang.Object
implements Cacheable, java.lang.Cloneable, Compileable, java.io.Serializable

An application or servlet can instantiate a BinaryData to retrieve a binary file.

You can pass the filename of the binary file to the constructor, in which case it is read in immediately.

To retrive the binary data, call the process(java.io.OutputStream) method.

To facilitate multithreading, BinaryData objects are immutable; if you need to reload a binary file, you must make a new BinaryData object. In most cases, it will be sufficient to let a Cache do this for you.

Version:

$Id: BinaryData.java,v 1.1.1.1 2004/10/16 14:55:02 run2000 Exp $

See Also:

FileTemplateCache, Serialized Form

Field Summary

protected Cache	cache The cache to which this binary data object belongs (if any).
protected byte[]	dataArray The binary data held by this object.

Constructor Summary

BinaryData()
Constructs an empty binary object.

BinaryData(BinaryData data)
Clones an existing BinaryData instance.

BinaryData(java.io.File file)
Constructs a BinaryData object by compiling it from a file.

BinaryData(java.io.InputStream stream)
Constructs a template by compiling it from an InputStream.

BinaryData(java.lang.String filePath)
Constructs a binary data object by compiling it from a file.

Method Summary

java.lang.Object	clone() Clones the current BinaryData object.
void	compileFromFile(java.io.File file) Reads and compiles a template from a file, by getting the file's FileInputStream and using it to call compileFromStream(), using the platform's default character encoding.
void	compileFromFile(java.lang.String filePath) Reads and compiles a template from a file, by getting the file's FileInputStream and using it to call compileFromStream(), using the platform's default character encoding.
void	compileFromStream(java.io.InputStream stream) Compiles the template from an InputStream, using the platform's default character encoding.
void	compileFromStream(java.io.InputStream stream, java.lang.String encoding) Compiles the template from an InputStream, using the specified character encoding.
Cache	getCache() Retrieve the Cache that this object is stored in.
void	process(java.io.OutputStream out) Processes the binary data file, and output the resulting binary data to an OutputStream.
void	setCache(Cache cache) Sets the Cache that this object is stored in.
java.lang.String	toString() Returns a string representation of the object.

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

dataArray

protected byte[] dataArray

The binary data held by this object.

cache

protected transient Cache cache

The cache to which this binary data object belongs (if any).

Constructor Detail

BinaryData

public BinaryData()

Constructs an empty binary object.

BinaryData

public BinaryData(java.lang.String filePath)
           throws java.io.IOException

Constructs a binary data object by compiling it from a file. Calls compileFromFile().

Parameters:

filePath - the absolute path of the binary file to be compiled.

Throws:

java.io.IOException

BinaryData

public BinaryData(java.io.File file)
           throws java.io.IOException

Constructs a BinaryData object by compiling it from a file. Calls compileFromFile().

Parameters:

file - a File representing the binary file to be compiled.

Throws:

java.io.IOException

BinaryData

public BinaryData(java.io.InputStream stream)
           throws java.io.IOException

Constructs a template by compiling it from an InputStream. Calls compileFromStream().

Parameters:

stream - an InputStream from which the template can be read.

Throws:

java.io.IOException

BinaryData

public BinaryData(BinaryData data)

Clones an existing BinaryData instance.

Parameters:

data - the BinaryData instance to be cloned

Method Detail

compileFromFile

public void compileFromFile(java.lang.String filePath)
                     throws java.io.IOException

Reads and compiles a template from a file, by getting the file's FileInputStream and using it to call compileFromStream(), using the platform's default character encoding.

Parameters:

filePath - the absolute path of the template file to be compiled.

Throws:

java.io.IOException

compileFromFile

public void compileFromFile(java.io.File file)
                     throws java.io.IOException

Reads and compiles a template from a file, by getting the file's FileInputStream and using it to call compileFromStream(), using the platform's default character encoding.

Parameters:

file - a File representing the template file to be compiled.

Throws:

java.io.IOException

compileFromStream

public void compileFromStream(java.io.InputStream stream)
                       throws java.io.IOException

Compiles the template from an InputStream, using the platform's default character encoding. If the template has already been compiled, this method does nothing.

Specified by:

compileFromStream in interface Compileable

Parameters:

stream - an InputStream from which the template can be read.

Throws:

java.io.IOException

compileFromStream

public void compileFromStream(java.io.InputStream stream,
                              java.lang.String encoding)
                       throws java.io.IOException

Compiles the template from an InputStream, using the specified character encoding. If the template has already been compiled, this method does nothing.

Specified by:

compileFromStream in interface Compileable

Parameters:

stream - an InputStream from which the template can be read.

encoding - the character encoding to use. For binary data, this does nothing.

Throws:

java.io.IOException

process

public void process(java.io.OutputStream out)

Processes the binary data file, and output the resulting binary data to an OutputStream.

Parameters:

out - an OutputStream to output the HTML to.

setCache

public void setCache(Cache cache)

Sets the Cache that this object is stored in. IncludeInstruction objects will be able to request this Cache at run-time.

Specified by:

setCache in interface Cacheable

Parameters:

cache - the Cache that this template belongs to.

getCache

public Cache getCache()

Retrieve the Cache that this object is stored in.

Specified by:

getCache in interface Cacheable

Returns:

the Cache that this template belongs to.

clone

public java.lang.Object clone()

Clones the current BinaryData object.

Specified by:

clone in interface Cacheable

Overrides:

clone in class java.lang.Object

Returns:

a cloned instance of the current BinaryData object

toString

public java.lang.String toString()

Returns a string representation of the object.

Overrides:

toString in class java.lang.Object

Returns:

a string representation of the object.