Package org.opensaml.core.xml.persist

Class FilesystemLoadSaveManager<T extends XMLObject>

java.lang.Object

org.opensaml.core.xml.persist.AbstractConditionalLoadXMLObjectLoadSaveManager<T>

org.opensaml.core.xml.persist.FilesystemLoadSaveManager<T>

Type Parameters:

T - the specific base XML object type being managed

All Implemented Interfaces:

ConditionalLoadXMLObjectLoadSaveManager<T>, XMLObjectLoadSaveManager<T>

@NotThreadSafe
public class FilesystemLoadSaveManager<T extends XMLObject>
extends AbstractConditionalLoadXMLObjectLoadSaveManager<T>

Implementation of XMLObjectLoadSaveManager which uses a local filesystem to load and store serialized XML.

The primary required configuration is a base directory path under which files of serialized XML will be located. The file name to use is simply the specified String index key, which is treated as an immediate child file name of the base directory. Callers are required to ensure that index keys are acceptable as file names on the platform(s) on which this manager is used.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	FilesystemLoadSaveManager.DefaultFileFilter	Default filter used to filter data returned in listKeys() and listAll().
private class	FilesystemLoadSaveManager.FileIterable	Iterable which provides lazy iteration over the managed files.
private class	FilesystemLoadSaveManager.FileIterator	Iterator which provides lazy iteration over the managed files.

Field Summary

Fields

Modifier and Type	Field	Description
private File	baseDirectory	The base directory used for storing individual serialized XML files.
private FileFilter	fileFilter	File filter used in filtering files in listKeys() and listAll().
private org.slf4j.Logger	log	Logger.
private ParserPool	parserPool	Parser pool instance for deserializing XML from the filesystem.

Constructor Summary

Constructors

Constructor	Description
FilesystemLoadSaveManager(File baseDir)	Constructor.
FilesystemLoadSaveManager(File baseDir, boolean conditionalLoad)	Constructor.
FilesystemLoadSaveManager(File baseDir, ParserPool pp)	Constructor.
FilesystemLoadSaveManager(File baseDir, ParserPool pp, boolean conditionalLoad)	Constructor.
FilesystemLoadSaveManager(String baseDir)	Constructor.
FilesystemLoadSaveManager(String baseDir, boolean conditionalLoad)	Constructor.
FilesystemLoadSaveManager(String baseDir, ParserPool pp)	Constructor.
FilesystemLoadSaveManager(String baseDir, ParserPool pp, boolean conditionalLoad)	Constructor.

Method Summary

Modifier and Type	Method	Description
protected File	buildFile(String key)	Build the target file name from the specified index key and the configured base directory.
boolean	exists(String key)	Evaluate whether an object already exists indexed by the supplied key.
protected boolean	isUnmodifiedSinceLastLoad(String key)	Check whether the data corresponding to the specified key has been modified since the last time XMLObjectLoadSaveManager.load(String) was called for that key.
Iterable<Pair<String,T>>	listAll()	Return an iterable of all objects under management, along with their associated index key.
Set<String>	listKeys()	Return a set of the index keys of all objects under management.
T	load(String key)	Load a particular object based on the supplied key.
boolean	remove(String key)	Remove the object indexed by the specified key.
void	save(String key, T xmlObject)	Save a particular object, indexed by the supplied key.
void	save(String key, T xmlObject, boolean overwrite)	Save a particular object, indexed by the supplied key.
boolean	updateKey(String currentKey, String newKey)	Update the key under which a particular object is stored.

Methods inherited from class org.opensaml.core.xml.persist.AbstractConditionalLoadXMLObjectLoadSaveManager

clearAllLoadLastModified, clearLoadLastModified, getLoadLastModified, isLoadConditionally, updateLoadLastModified, updateLoadLastModified

Methods inherited from class java.lang.Object

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

Field Detail

log

private org.slf4j.Logger log

Logger.

baseDirectory

private File baseDirectory

The base directory used for storing individual serialized XML files.

parserPool

private ParserPool parserPool

Parser pool instance for deserializing XML from the filesystem.

fileFilter

private FileFilter fileFilter

File filter used in filtering files in listKeys() and listAll().

Constructor Detail

FilesystemLoadSaveManager

public FilesystemLoadSaveManager(@ParameterName(name="baseDir") @Nonnull
                                 String baseDir)

Constructor.

Parameters:

baseDir - the base directory, must be an absolute path

FilesystemLoadSaveManager

public FilesystemLoadSaveManager(@ParameterName(name="baseDir") @Nonnull
                                 String baseDir,
                                 @ParameterName(name="conditionalLoad")
                                 boolean conditionalLoad)

Constructor.

Parameters:

baseDir - the base directory, must be an absolute path

conditionalLoad - whether load(String) should behave as defined in ConditionalLoadXMLObjectLoadSaveManager

FilesystemLoadSaveManager

public FilesystemLoadSaveManager(@ParameterName(name="baseDirFile") @Nonnull
                                 File baseDir)

Constructor.

Parameters:

baseDir - the base directory, must be an absolute path

FilesystemLoadSaveManager

public FilesystemLoadSaveManager(@ParameterName(name="baseDirFile") @Nonnull
                                 File baseDir,
                                 @ParameterName(name="conditionalLoad")
                                 boolean conditionalLoad)

Constructor.

Parameters:

baseDir - the base directory, must be an absolute path

conditionalLoad - whether load(String) should behave as defined in ConditionalLoadXMLObjectLoadSaveManager

FilesystemLoadSaveManager

public FilesystemLoadSaveManager(@ParameterName(name="baseDir") @Nonnull
                                 String baseDir,
                                 @ParameterName(name="parserPool") @Nullable
                                 ParserPool pp)

Constructor.

Parameters:

baseDir - the base directory, must be an absolute path

pp - the parser pool instance to use

FilesystemLoadSaveManager

public FilesystemLoadSaveManager(@ParameterName(name="baseDir") @Nonnull
                                 String baseDir,
                                 @ParameterName(name="parserPool") @Nullable
                                 ParserPool pp,
                                 @ParameterName(name="conditionalLoad")
                                 boolean conditionalLoad)

Constructor.

Parameters:

baseDir - the base directory, must be an absolute path

pp - the parser pool instance to use

conditionalLoad - whether load(String) should behave as defined in ConditionalLoadXMLObjectLoadSaveManager

FilesystemLoadSaveManager

public FilesystemLoadSaveManager(@ParameterName(name="baseDirFile") @Nonnull
                                 File baseDir,
                                 @ParameterName(name="parserPool") @Nullable
                                 ParserPool pp)

Constructor.

Parameters:

baseDir - the base directory, must be an absolute path

pp - the parser pool instance to use

FilesystemLoadSaveManager

public FilesystemLoadSaveManager(@ParameterName(name="baseDirFile") @Nonnull
                                 File baseDir,
                                 @ParameterName(name="parserPool") @Nullable
                                 ParserPool pp,
                                 @ParameterName(name="conditionalLoad")
                                 boolean conditionalLoad)

Constructor.

Parameters:

baseDir - the base directory, must be an absolute path

pp - the parser pool instance to use

conditionalLoad - whether load(String) should behave as defined in ConditionalLoadXMLObjectLoadSaveManager

Method Detail

listKeys

public Set<String> listKeys()
                     throws IOException

Return a set of the index keys of all objects under management.

Returns:

a set of all indexed keys

Throws:

IOException - if there is a fatal error obtaining the keys

listAll

public Iterable<Pair<String,T>> listAll()
                                       throws IOException

Return an iterable of all objects under management, along with their associated index key.

Returns:

an iterable of all managed objects

Throws:

IOException - if there is a fatal error loading the managed objects

exists

public boolean exists(String key)
               throws IOException

Evaluate whether an object already exists indexed by the supplied key.

Parameters:

key - the key of the desired object

Returns:

true if object exists, false otherwise

Throws:

IOException - if there is a fatal error evaluating object existence

load

public T load(String key)
       throws IOException

Load a particular object based on the supplied key.

Parameters:

key - the key of the desired object

Returns:

the object saved under the specified key, or null if there is no such object

Throws:

IOException - if there is a fatal error loading the object

isUnmodifiedSinceLastLoad

protected boolean isUnmodifiedSinceLastLoad(@Nonnull
                                            String key)
                                     throws IOException

Check whether the data corresponding to the specified key has been modified since the last time XMLObjectLoadSaveManager.load(String) was called for that key.

Specified by:

isUnmodifiedSinceLastLoad in class AbstractConditionalLoadXMLObjectLoadSaveManager<T extends XMLObject>

Parameters:

key - the data key

Returns:

true if the corresponding data has been modified since the last load, false otherwise

Throws:

IOException - if there is a fatal error evaluating the last modified status

save

public void save(String key,
                 T xmlObject)
          throws IOException

Save a particular object, indexed by the supplied key.

An existing object indexed by the supplied key will not be overwritten. Instead an IOException will be thrown. For saving with the overwrite option, see XMLObjectLoadSaveManager.save(String, XMLObject, boolean).

Parameters:

key - the key under which to index the object

xmlObject - the object to save

Throws:

IOException - if there is a fatal error saving the object, or if an object already exists indexed by the supplied key

save

public void save(String key,
                 T xmlObject,
                 boolean overwrite)
          throws IOException

Save a particular object, indexed by the supplied key.

Parameters:

key - the key under which to index the object

xmlObject - the object to save

overwrite - whether or not to overwrite any existing object indexed by the supplied key

Throws:

IOException - if there is a fatal error saving the object, or if overwrite=false, if an object already exists indexed by the supplied key

remove

public boolean remove(String key)
               throws IOException

Remove the object indexed by the specified key.

Parameters:

key - the key of the object to remove

Returns:

true if the object was found and successfully removed, false if no such object was found

Throws:

IOException - if there was a fatal error removing the object

updateKey

public boolean updateKey(String currentKey,
                         String newKey)
                  throws IOException

Update the key under which a particular object is stored.

Parameters:

currentKey - the current key under which the object is stored

newKey - the new key under which the object should be stored

Returns:

true if the object was found under the current key and the key successfully updated, false if no such object was found

Throws:

IOException - if there was a fatal error updating the key

buildFile

protected File buildFile(String key)
                  throws IOException

Build the target file name from the specified index key and the configured base directory.

Parameters:

key - the target file name index key

Returns:

the constructed File instance for the target file

Throws:

IOException - if there is a fatal error constructing or evaluating the candidate target path