org.springframework.scripting.support

Class ResourceScriptSource

java.lang.Object

org.springframework.scripting.support.ResourceScriptSource

All Implemented Interfaces:

ScriptSource

public class ResourceScriptSource
extends java.lang.Object
implements ScriptSource

ScriptSource implementation based on Spring's Resource abstraction. Loads the script text from the underlying Resource's File or InputStream, and tracks the last-modified timestamp of the file (if possible).

Since:

2.0

Author:

Rob Harrop, Juergen Hoeller

See Also:

InputStreamSource.getInputStream(), Resource.getFile(), ResourceLoader

Field Summary

Fields

Modifier and Type	Field and Description
private long	lastModified
private java.lang.Object	lastModifiedMonitor
protected Log	logger Logger available to subclasses
private EncodedResource	resource

Constructor Summary

Constructors

Constructor and Description
ResourceScriptSource(EncodedResource resource) Create a new ResourceScriptSource for the given resource.
ResourceScriptSource(Resource resource) Create a new ResourceScriptSource for the given resource.

Method Summary

Modifier and Type	Method and Description
Resource	getResource() Return the Resource to load the script from.
java.lang.String	getScriptAsString() Retrieve the current script source text as String.
boolean	isModified() Indicate whether the underlying script data has been modified since the last time ScriptSource.getScriptAsString() was called.
protected long	retrieveLastModifiedTime() Retrieve the current last-modified timestamp of the underlying resource.
void	setEncoding(java.lang.String encoding) Set the encoding used for reading the script resource.
java.lang.String	suggestedClassName() Determine a class name for the underlying script.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected final Log logger

Logger available to subclasses

resource

private EncodedResource resource

lastModified

private long lastModified

lastModifiedMonitor

private final java.lang.Object lastModifiedMonitor

Constructor Detail

ResourceScriptSource

public ResourceScriptSource(EncodedResource resource)

Create a new ResourceScriptSource for the given resource.

Parameters:

resource - the EncodedResource to load the script from

ResourceScriptSource

public ResourceScriptSource(Resource resource)

Create a new ResourceScriptSource for the given resource.

Parameters:

resource - the Resource to load the script from (using UTF-8 encoding)

Method Detail

getResource

public final Resource getResource()

Return the Resource to load the script from.

setEncoding

public void setEncoding(java.lang.String encoding)

Set the encoding used for reading the script resource.

The default value for regular Resources is "UTF-8". A null value implies the platform default.

getScriptAsString

public java.lang.String getScriptAsString()
                                   throws java.io.IOException

Description copied from interface: ScriptSource

Retrieve the current script source text as String.

Specified by:

getScriptAsString in interface ScriptSource

Returns:

the script text

Throws:

java.io.IOException - if script retrieval failed

isModified

public boolean isModified()

Description copied from interface: ScriptSource

Indicate whether the underlying script data has been modified since the last time ScriptSource.getScriptAsString() was called. Returns true if the script has not been read yet.

Specified by:

isModified in interface ScriptSource

Returns:

whether the script data has been modified

retrieveLastModifiedTime

protected long retrieveLastModifiedTime()

Retrieve the current last-modified timestamp of the underlying resource.

Returns:

the current timestamp, or 0 if not determinable

suggestedClassName

public java.lang.String suggestedClassName()

Description copied from interface: ScriptSource

Determine a class name for the underlying script.

Specified by:

suggestedClassName in interface ScriptSource

Returns:

the suggested class name, or null if none available

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object