Package com.logicaldoc.core.searchengine

Class StandardSearchEngine

java.lang.Object
com.logicaldoc.core.searchengine.StandardSearchEngine
All Implemented Interfaces:
SearchEngine
public class StandardSearchEngine extends Object implements SearchEngine
Standard implementation that implements a local search engine
Since:
6.5
Author:
Marco Meschieri - LogicalDOC

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static org.apache.lucene.util.Version
    VERSION
     

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    addHit(Document document, InputStream content)
    Adds a new hit to the index
    void
    addHit(Document document, String content)
    Adds a new Hit into the index
    String
    check()
    Launch the check on the Index
    void
    close()
    Closes all indexing operations, shuts down the engine.
    void
    deleteHit(long id)
    Deletes an hit in the index of the search engine.
    void
    deleteHits(Collection<Long> ids)
    Removed all passed hits from the index
    void
    dropIndex()
    Drops the full-text index
    long
    getCount()
    Returns the number of indexed documents in all indexes.
    Hit
    getHit(long id)
     
    Object
    getServer()
    Service method to get access from the internal core
    void
    init()
    To be called on the context startup, this method creates all indexes and unlock the existing ones
    boolean
    isLocked()
    Check if at least one index is locked
    void
    optimize()
    Launch the index optimization that physically deletes the removed entries.
    long
    purge()
    Removes from the index those entries without a coutnerpart in the database
    Hits
    query(String expression, int page, int size)
    Executes a low-level query in the fulltext index
    Attention: The hits will be populated with just the fields stored in the index
    Hits
    search(String expression, String[] filters, String expressionLanguage, Integer rows)
    Search for hits.
    Attention: The hits will be populated with just the fields stored in the index
    void
    setConfig(ContextProperties config)
     
    void
    setDocumentDao(DocumentDAO documentDao)
     
    void
    setNoteDao(DocumentNoteDAO noteDao)
     
    void
    unlock()
    This method can unlock a locked index.

    Methods inherited from class java.lang.Object

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

  • Field Details

    • VERSION

      public static org.apache.lucene.util.Version VERSION

  • Method Details

    • setConfig

      public void setConfig(ContextProperties config)

    • setDocumentDao

      public void setDocumentDao(DocumentDAO documentDao)

    • addHit

      public void addHit(Document document, String content) throws IndexException
      Description copied from interface: SearchEngine
      Adds a new Hit into the index
      Specified by:
      addHit in interface SearchEngine
      Parameters:
      document - The document to add into the index
      content - The extracted body text
      Throws:
      IndexException - is an error happens and the document cannot be added to the index

    • addHit

      public void addHit(Document document, InputStream content) throws IndexException
      Description copied from interface: SearchEngine
      Adds a new hit to the index
      Specified by:
      addHit in interface SearchEngine
      Parameters:
      document - The document that we want to add
      content - Stream of the document's file
      Throws:
      IndexException - is an error happens and the document cannot be added to the index

    • optimize

      public void optimize()
      Description copied from interface: SearchEngine
      Launch the index optimization that physically deletes the removed entries. This is a long running operation.
      Specified by:
      optimize in interface SearchEngine

    • check

      public String check()
      Description copied from interface: SearchEngine
      Launch the check on the Index
      Specified by:
      check in interface SearchEngine
      Returns:
      the output of the check

    • deleteHit

      public void deleteHit(long id)
      Description copied from interface: SearchEngine
      Deletes an hit in the index of the search engine.
      Specified by:
      deleteHit in interface SearchEngine
      Parameters:
      id - - id of the hit

    • deleteHits

      public void deleteHits(Collection<Long> ids)
      Description copied from interface: SearchEngine
      Removed all passed hits from the index
      Specified by:
      deleteHits in interface SearchEngine
      Parameters:
      ids - Collection of hit identifiers

    • getHit

      public Hit getHit(long id)
      Specified by:
      getHit in interface SearchEngine

    • query

      public Hits query(String expression, int page, int size)
      Description copied from interface: SearchEngine
      Executes a low-level query in the fulltext index
      Attention: The hits will be populated with just the fields stored in the index
      Specified by:
      query in interface SearchEngine
      Parameters:
      expression - the query to use
      page - the page to retrieve
      size - the maximum number of entries to retrieve
      Returns:
      the search result, ordered by ascending id

    • search

      public Hits search(String expression, String[] filters, String expressionLanguage, Integer rows)
      Description copied from interface: SearchEngine
      Search for hits.
      Attention: The hits will be populated with just the fields stored in the index
      Specified by:
      search in interface SearchEngine
      Parameters:
      expression - the search expression
      filters - a set of filter expressions, optional
      expressionLanguage - the language in which the expression is writted
      rows - maximum number elements to be returned
      Returns:
      the hits ordered by descending score

    • close

      public void close()
      Description copied from interface: SearchEngine
      Closes all indexing operations, shuts down the engine.
      Specified by:
      close in interface SearchEngine

    • unlock

      public void unlock()
      Description copied from interface: SearchEngine
      This method can unlock a locked index.
      Specified by:
      unlock in interface SearchEngine

    • isLocked

      public boolean isLocked()
      Description copied from interface: SearchEngine
      Check if at least one index is locked
      Specified by:
      isLocked in interface SearchEngine
      Returns:
      true if one or more indexes are locked

    • getCount

      public long getCount()
      Description copied from interface: SearchEngine
      Returns the number of indexed documents in all indexes. Used for statistical output.
      Specified by:
      getCount in interface SearchEngine
      Returns:
      the total number of entries in the index
      See Also:

    • purge

      public long purge()
      Description copied from interface: SearchEngine
      Removes from the index those entries without a coutnerpart in the database
      Specified by:
      purge in interface SearchEngine
      Returns:
      number of deleted entries

    • dropIndex

      public void dropIndex()
      Description copied from interface: SearchEngine
      Drops the full-text index
      Specified by:
      dropIndex in interface SearchEngine
      See Also:

    • init

      public void init()
      Description copied from interface: SearchEngine
      To be called on the context startup, this method creates all indexes and unlock the existing ones
      Specified by:
      init in interface SearchEngine
      See Also:

    • getServer

      public Object getServer()
      Description copied from interface: SearchEngine
      Service method to get access from the internal core
      Specified by:
      getServer in interface SearchEngine
      Returns:
      the search server representation

    • setNoteDao

      public void setNoteDao(DocumentNoteDAO noteDao)