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## fr.gouv.culture.sdx.repository
Interface Repository

All Superinterfaces:
  org.apache.avalon.framework.configuration.Configurable, org.apache.avalon.framework.context.Contextualizable, Describable, Encodable, Identifiable, Localizable, org.apache.avalon.framework.logger.LogEnabled, Saveable, SdxObject, org.apache.avalon.framework.service.Serviceable, org.apache.excalibur.xml.sax.XMLizable

All Known Implementing Classes:
  AbstractDatabaseBackedRepository, AbstractDataSourceComponentBackedRepository, AbstractRepository

public interface Repository
extends SdxObject, Saveable

A generic storage location for SDX documents.

When SDX indexes a document, it must make it available, for example send it as a stream or as SAX events. A repository is responsible for sending the document's contents and, possibly, to store it.

A repository can be read-only or not. TODO?: i think we have removed this option?-rbp If it is, documents can't be stored, they can only be retrieved. There are two main interests for read-only repositories : (1) to implement an SDX application on a read-only media such as a CD-ROM, the indexing may have been done before ; (2) for URL repositories, where the document can be distant and not writable.

A repository must be able to find a document only with the document's id. The manner in which it keeps track of these ids is implementation specific.

A repository must also manage a connection, even if it doesn't use it. A connection may be used to speed up batch operations.

To be usable, a repository object must created, a super.getLog() set, then configured and initialized.

Nested Class Summary
`static interface` | `Repository.ConfigurationNode`

Field Summary
`static java.lang.String` | `CLASS_NAME_SUFFIX` String representation of the repository class name suffix.
`static java.lang.String` | `PACKAGE_QUALNAME` String representation of the repository package name (including trailing separator ".").

Fields inherited from interface fr.gouv.culture.sdx.utils.Encodable
`DEFAULT_ENCODING`

Fields inherited from interface fr.gouv.culture.sdx.utils.save.Saveable
`ALL_SAVE_ATTRIB, PATH_ATTRIB, SAVE_DIRECTORY_PARAM`

Method Summary
`void` | `add(Document doc, RepositoryConnection c)` Adds a document to the repository.
`void` | `delete(Document doc, RepositoryConnection c)` Deletes a document.
`void` | `empty()` Deletes all documents from the repository.
`boolean` | `exists(java.lang.String id, RepositoryConnection conn)`
`void` | `get(Document doc, java.io.OutputStream os, RepositoryConnection c)` Feeds a stream with a document.
`RepositoryConnection` | `getConnection()` Returns a connection to the repository.
`void` | `init()` Initializes the repository.
`boolean` | `isDefault()` Returns whether it is a default repository for an application.
`void` | `lists(org.xml.sax.ContentHandler hdl)` Lists the repository content as SAX events.
`java.io.InputStream` | `openStream(Document doc, java.lang.String encoding, RepositoryConnection c)` Opens a stream to read a document.
`void` | `optimize()` Utility method for repository maintenance, normally used to optimize indices of Lucene based repositories It is the responsibility of the Repository to ensure that unnecessary optimizations are not performed when this method is called.
`void` | `releaseConnection(RepositoryConnection c)` Releases a previously opened connection
`void` | `setIsDefault(boolean b)` Sets the default flag for the repository
`long` | `size()` Returns the number of documents within the repository.
`void` | `toSAX(ParsableDocument doc, org.apache.cocoon.xml.XMLConsumer consumer, RepositoryConnection c)` Retrieves a SDX document as SAX events.

Methods inherited from interface fr.gouv.culture.sdx.utils.SdxObject
`getLog`

Methods inherited from interface org.apache.avalon.framework.logger.LogEnabled
`enableLogging`

Methods inherited from interface org.apache.avalon.framework.context.Contextualizable
`contextualize`

Methods inherited from interface org.apache.avalon.framework.service.Serviceable
`service`

Methods inherited from interface org.apache.avalon.framework.configuration.Configurable
`configure`

Methods inherited from interface fr.gouv.culture.sdx.utils.Identifiable
`getId, setId`

Methods inherited from interface fr.gouv.culture.sdx.utils.Describable
`getDescription, setDescription`

Methods inherited from interface fr.gouv.culture.sdx.utils.Encodable
`getEncoding, setEncoding`

Methods inherited from interface fr.gouv.culture.sdx.utils.Localizable
`getLocale, getXmlLang, setLocale, setXmlLang`

Methods inherited from interface org.apache.excalibur.xml.sax.XMLizable
`toSAX`

Methods inherited from interface fr.gouv.culture.sdx.utils.save.Saveable
`backup, restore`

Field Detail

### PACKAGE_QUALNAME

    public static final java.lang.String PACKAGE_QUALNAME

  String representation of the repository package name (including trailing separator ".").

  See Also:
    Constant Field Values

### CLASS_NAME_SUFFIX

    public static final java.lang.String CLASS_NAME_SUFFIX

  String representation of the repository class name suffix.

  See Also:
    Constant Field Values

Method Detail

### init

    public void init()
              throws SDXException

  Initializes the repository.

  Throws:
    `SDXException`

### getConnection

    public RepositoryConnection getConnection()
                                       throws SDXException

  Returns a connection to the repository.

  Throws:
    `SDXException`

### releaseConnection

    public void releaseConnection(RepositoryConnection c)
                           throws SDXException

  Releases a previously opened connection

  Parameters:
    `c` - The connection to release.
  Throws:
    `SDXException`

### size

    public long size()
              throws SDXException

  Returns the number of documents within the repository.

  Throws:
    `SDXException`

### lists

    public void lists(org.xml.sax.ContentHandler hdl)
               throws SDXException

  Lists the repository content as SAX events.

  The exact structure is still to be defined, but it shoud be very simple, with only one element per document and a few properties as attributes.

  Parameters:
    `hdl` - The SAX content handler to feed with events.
  Throws:
    `SDXException`

### add

    public void add(Document doc,
                    RepositoryConnection c)
             throws SDXException

  Adds a document to the repository.

  Parameters:
    `doc` - The document to add.
    `c` - A connection to the repository.
  Throws:
    `SDXException`

### empty

    public void empty()
               throws SDXException

  Deletes all documents from the repository.

  Throws:
    `SDXException`

### delete

    public void delete(Document doc,
                       RepositoryConnection c)
                throws SDXException

  Deletes a document.

  Parameters:
    `doc` - The document to delete.
  Throws:
    `SDXException`

### toSAX

    public void toSAX(ParsableDocument doc,
                      org.apache.cocoon.xml.XMLConsumer consumer,
                      RepositoryConnection c)
               throws SDXException

  Retrieves a SDX document as SAX events.

  Parameters:
    `doc` - The document.
    `consumer` - A SAX content handler to feed with events.

    The wrapped contentHandler for including events within an XSP page contentHandler should be created using IncludeXMLConsumer stripper = new IncludeXMLConsumer(xspContentHandler);

    `c` - A connection to the repository.
  Throws:
    `SDXException`

### openStream

    public java.io.InputStream openStream(Document doc,
                                          java.lang.String encoding,
                                          RepositoryConnection c)
                                   throws SDXException

  Opens a stream to read a document.

  Parameters:
    `doc` - The document to read.
    `encoding` - The encoding to use for serialization of XML content (may be null).
    `c` - A connection to the repository.
  Returns:
    An input stream from which the serialized content of the document can be read.
  Throws:
    `SDXException`

### get

    public void get(Document doc,
                    java.io.OutputStream os,
                    RepositoryConnection c)
             throws SDXException

  Feeds a stream with a document.

  Parameters:
    `doc` - The document to read.
    `os` - The output stream where to write.
    `c` - A connection to the repository.
  Throws:
    `SDXException`

### isDefault

    public boolean isDefault()

  Returns whether it is a default repository for an application.

### setIsDefault

    public void setIsDefault(boolean b)

  Sets the default flag for the repository

### optimize

    public void optimize()
                  throws SDXException

  Utility method for repository maintenance, normally used to optimize indices of Lucene based repositories It is the responsibility of the Repository to ensure that unnecessary optimizations are not performed when this method is called.

  Throws:
    `SDXException`

### exists

    public boolean exists(java.lang.String id,
                          RepositoryConnection conn)

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