org.pentaho.reporting.libraries.resourceloader.cache

Class CachingResourceData

java.lang.Object

org.pentaho.reporting.libraries.resourceloader.cache.CachingResourceData

All Implemented Interfaces:

java.io.Serializable, ResourceData

public class CachingResourceData
extends java.lang.Object
implements ResourceData, java.io.Serializable

A very simple implementation which is suitable for smaller objects. The complete data is read into memory.

Author:

Thomas Morgner

See Also:

Serialized Form

Field Summary

Fields inherited from interface org.pentaho.reporting.libraries.resourceloader.ResourceData

CONTENT_LENGTH, CONTENT_TYPE, FILENAME

Constructor Summary

Constructors

Constructor and Description
CachingResourceData(ResourceData data)

Method Summary

Modifier and Type	Method and Description
static ResourceData	createCached(ResourceData data)
java.lang.Object	getAttribute(java.lang.String key)
ResourceKey	getKey()
long	getLength()
byte[]	getResource(ResourceManager caller) This is dangerous, especially if the resource is large.
int	getResource(ResourceManager caller, byte[] target, long offset, int length) Tries to read data into the given byte-array.
java.io.InputStream	getResourceAsStream(ResourceManager caller)
long	getVersion(ResourceManager caller)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CachingResourceData

public CachingResourceData(ResourceData data)

Method Detail

getResourceAsStream

public java.io.InputStream getResourceAsStream(ResourceManager caller)
                                        throws ResourceLoadingException

Specified by:

getResourceAsStream in interface ResourceData

Throws:

ResourceLoadingException

getLength

public long getLength()

Specified by:

getLength in interface ResourceData

getResource

public byte[] getResource(ResourceManager caller)
                   throws ResourceLoadingException

Description copied from interface: ResourceData

This is dangerous, especially if the resource is large.

Specified by:

getResource in interface ResourceData

Returns:

Throws:

ResourceLoadingException

getResource

public int getResource(ResourceManager caller,
                       byte[] target,
                       long offset,
                       int length)
                throws ResourceLoadingException

Description copied from interface: ResourceData

Tries to read data into the given byte-array.

Specified by:

getResource in interface ResourceData

Returns:

the number of bytes read or -1 if no more data can be read.

Throws:

ResourceLoadingException

getAttribute

public java.lang.Object getAttribute(java.lang.String key)

Specified by:

getAttribute in interface ResourceData

getKey

public ResourceKey getKey()

Specified by:

getKey in interface ResourceData

getVersion

public long getVersion(ResourceManager caller)
                throws ResourceLoadingException

Specified by:

getVersion in interface ResourceData

Throws:

ResourceLoadingException

createCached

public static ResourceData createCached(ResourceData data)