org.opensaml.util.resource
Class FileBackedHttpResource

java.lang.Object
  org.opensaml.util.resource.AbstractFilteredResource
      org.opensaml.util.resource.HttpResource
          org.opensaml.util.resource.FileBackedHttpResource

All Implemented Interfaces:

Resource

public class FileBackedHttpResource
extends HttpResource

A resource representing a file read from an HTTP(S) location. Every time the file is successfully read from the URL location it is written to a backing file. If the file can not be read from the URL it is read from this backing file, if available. Note, large files should not be accessed in this manner as the entire file is read into memory before being written to disk and then returned.

Constructor Summary

FileBackedHttpResource(String resource, String backingFile)
Constructor.

FileBackedHttpResource(String resource, String backingFile, ResourceFilter resourceFilter)
Deprecated. use AbstractFilteredResource.setResourceFilter(ResourceFilter) instead

FileBackedHttpResource(String resource, URI backingFile)
Constructor.

FileBackedHttpResource(String resource, URI backingFile, ResourceFilter resourceFilter)
Deprecated. use AbstractFilteredResource.setResourceFilter(ResourceFilter) instead

Method Summary

boolean	exists() Checks whether the resource exists.
InputStream	getInputStream() Gets the inputstream to the resource's data.
org.joda.time.DateTime	getLastModifiedTime() Gets the date and time the resource was last modified.
String	getLocation() Gets resource location information.
protected void	saveToResourceFile(byte[] resource) Saves a resource to the backing file.

Methods inherited from class org.opensaml.util.resource.HttpResource

equals, getResource, hashCode, toString

Methods inherited from class org.opensaml.util.resource.AbstractFilteredResource

applyFilter, getResourceFilter, setResourceFilter

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

FileBackedHttpResource

public FileBackedHttpResource(String resource,
                              String backingFile)

Constructor.

Parameters:

resource - HTTP(S) URL of the resource

backingFile - filesystem location to store the resource

FileBackedHttpResource

public FileBackedHttpResource(String resource,
                              URI backingFile)

Constructor.

Parameters:

resource - HTTP(S) URL of the resource

backingFile - file: URI location to store the resource

Since:

1.2

FileBackedHttpResource

public FileBackedHttpResource(String resource,
                              String backingFile,
                              ResourceFilter resourceFilter)

Deprecated. use AbstractFilteredResource.setResourceFilter(ResourceFilter) instead

Constructor.

Parameters:

resource - HTTP(S) URL of the resource

backingFile - filesystem location to store the resource

resourceFilter - filter to apply to this resource

FileBackedHttpResource

public FileBackedHttpResource(String resource,
                              URI backingFile,
                              ResourceFilter resourceFilter)

Deprecated. use AbstractFilteredResource.setResourceFilter(ResourceFilter) instead

Constructor.

Parameters:

resource - HTTP(S) URL of the resource

backingFile - filesystem location to store the resource

resourceFilter - filter to apply to this resource

Since:

1.2

Method Detail

exists

public boolean exists()
               throws ResourceException

Checks whether the resource exists.

Specified by:

exists in interface Resource

Overrides:

exists in class HttpResource

Returns:

true if the resource exists, false if not

Throws:

ResourceException - thrown if there is a problem determining if the resource exists

getInputStream

public InputStream getInputStream()
                           throws ResourceException

Gets the inputstream to the resource's data.

Specified by:

getInputStream in interface Resource

Overrides:

getInputStream in class HttpResource

Returns:

inputstream to the resource's data

Throws:

ResourceException - thrown if an input stream can not be created for the resource

getLastModifiedTime

public org.joda.time.DateTime getLastModifiedTime()
                                           throws ResourceException

Gets the date and time the resource was last modified.

Specified by:

getLastModifiedTime in interface Resource

Overrides:

getLastModifiedTime in class HttpResource

Returns:

date and time the resource was last modified

Throws:

ResourceException - thrown if the last modified time can not be determined

getLocation

public String getLocation()

Gets resource location information. Examples might be filesystem path, URL, etc.

Specified by:

getLocation in interface Resource

Overrides:

getLocation in class HttpResource

Returns:

resource location information

saveToResourceFile

protected void saveToResourceFile(byte[] resource)
                           throws ResourceException

Saves a resource to the backing file.

Parameters:

resource - the string representation of the resource

Throws:

ResourceException - thrown if the resource backing file can not be written to