org.pentaho.reporting.libraries.repository.file
Class FileContentEntity

java.lang.Object
  extended by org.pentaho.reporting.libraries.repository.file.FileContentEntity
All Implemented Interfaces:
java.io.Serializable, ContentEntity
Direct Known Subclasses:
FileContentItem, FileContentLocation

public abstract class FileContentEntity
extends java.lang.Object
implements ContentEntity, java.io.Serializable

A content-entity that uses a java.io.File as backend. The entity can read the LibRepositoryBoot.SIZE_ATTRIBUTE and can read and write the LibRepositoryBoot.VERSION_ATTRIBUTE.

Author:
Thomas Morgner
See Also:
Serialized Form

Method Summary
 boolean delete()
          Attempts to delete the entity.
 java.lang.Object getAttribute(java.lang.String domain, java.lang.String key)
          Returns a attribute value for the given domain (namespace) and attribute-name.
 java.lang.Object getContentId()
          Returns a unique identifier.
 java.lang.String getName()
          Returns the name of the file.
 ContentLocation getParent()
          Returns a reference to the parent location.
 Repository getRepository()
          Returns the current repository, to which tis entity belongs.
 boolean setAttribute(java.lang.String domain, java.lang.String key, java.lang.Object value)
          Updates the attribute value for the given attribute domain and name.
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Method Detail

getRepository

public Repository getRepository()
Returns the current repository, to which tis entity belongs.

Specified by:
getRepository in interface ContentEntity
Returns:
the repository.

getName

public java.lang.String getName()
Returns the name of the file.

Specified by:
getName in interface ContentEntity
Returns:
the name, never null.

getContentId

public java.lang.Object getContentId()
Returns a unique identifier. This can be canonical filename or a database key. It must be guaranteed that within the same repository the key will be unique.

Specified by:
getContentId in interface ContentEntity
Returns:
the unique content ID.

getAttribute

public java.lang.Object getAttribute(java.lang.String domain,
                                     java.lang.String key)
Returns a attribute value for the given domain (namespace) and attribute-name. Some generic attribute domains and names are defined as constants in the LibRepositoryBoot class.

Specified by:
getAttribute in interface ContentEntity
Parameters:
domain - the attribute domain.
key - the name of the attribute.
Returns:
the value or null, if the content-entity does not have a value for this attribute.

setAttribute

public boolean setAttribute(java.lang.String domain,
                            java.lang.String key,
                            java.lang.Object value)
Updates the attribute value for the given attribute domain and name. If the element is not writable or the attribute could not be updated for any other reason, the method will return false. This method only returns true, if the attribute has been updated successfully.

Specified by:
setAttribute in interface ContentEntity
Parameters:
domain - the attribute domain.
key - the attribute name
value - the new attribute value.
Returns:
true, if the update was successful, false otherwise.

getParent

public ContentLocation getParent()
Returns a reference to the parent location. If this entity represents the root directory, this method will return null.

Specified by:
getParent in interface ContentEntity
Returns:
the parent or null, if this is the root-directory.

delete

public boolean delete()
Attempts to delete the entity. After an entity has been deleted, any call to any of the methods of the entity may produce undefined results.

Specified by:
delete in interface ContentEntity
Returns:
true, if the entity was deleted and detached from the repository, false otherwise.