代碼: 選擇全部
UpdateByDocId( new DocumentModel() , 1);
代碼: 選擇全部
public class DocumentModel
{
public DocumentModel()
{
Fields = new List<Field>();
this.Id = System.Guid.NewGuid().ToString();
}
public DocumentModel(int docId)
{
Fields = new List<Field>();
Document doc = Index.GetDocument(docId);
this.Title = doc.Get("Title");
this.Id = doc.Get("Id");
this.Content = doc.Get("Content");
this.Privilege = doc.Get("Privilege");
this.DocId = docId.ToString();
}
public IList<string> ShareType { get; set; }
public IList<string> SpecifiedUsers { get; set; }
public IList<string> SpecifiedTeams { get; set; }
public IList<Field> Fields { get; set; }
public string Id { get; set; }
public string Privilege { get; set; }
public string Title { get; set; }
public string Content { get; set; }
public string DocId { get; set; }
public Term Term { get; set; }
public void Update()
{
int docId;
if (int.TryParse(this.DocId, out docId))
{
CreateFields();
Index.UpdateByDocId(this, docId);
}
}
private void CreateFields()
{
Term = new Term("Id", this.Id);
this.Fields.Add(new Field("Id", this.Id, Field.Store.YES, Field.Index.NOT_ANALYZED_NO_NORMS));
/*
需要分詞並建立索引
Index.ANALYZED – use the analyzer to break the Field’s value into a stream of separate tokens
and make each token searchable. This is useful for normal text fields (body, title, abstract, etc.).
不分詞，直接建立索引
Index.NOT_ANALYZED – do index the field, but do not analyze the String.
不建立索引
Index.NO – don’t make this field’s value available for searching at all.
*/
// Add title field
var titleField = new Field("Title", this.Title, Field.Store.YES, Field.Index.ANALYZED, Field.TermVector.WITH_POSITIONS_OFFSETS);
titleField.SetBoost(3.0f);
this.Fields.Add(titleField);
if (this.ShareType != null)
{
var privilege = new Field("Privilege", string.Empty, Field.Store.YES, Field.Index.NOT_ANALYZED_NO_NORMS);
if (this.ShareType.Contains("OnlyMe"))
{
privilege = new Field("Privilege", "OnlyMe", Field.Store.YES, Field.Index.NOT_ANALYZED_NO_NORMS);
Privilege = "OnlyMe";
this.Fields.Add(privilege);
}
// Everyone
if (this.ShareType.Contains("Everyone"))
{
privilege = new Field("Privilege", "Everyone", Field.Store.YES, Field.Index.NOT_ANALYZED_NO_NORMS);
Privilege = "Everyone";
this.Fields.Add(privilege);
}
//// 群組
if (this.ShareType.Contains("SpecifiedTeams"))
{
foreach (var team in this.SpecifiedTeams)
{
privilege = new Field("Privilege", team, Field.Store.YES, Field.Index.NOT_ANALYZED_NO_NORMS);
Privilege = team;
this.Fields.Add(privilege);
}
}
//// 使用者
if (this.ShareType.Contains("SpecifiedUsers"))
{
foreach (var user in this.SpecifiedUsers)
{
privilege = new Field("Privilege", user, Field.Store.YES, Field.Index.NOT_ANALYZED_NO_NORMS);
Privilege = user;
this.Fields.Add(privilege);
}
}
}
this.Fields.Add(new Field("Content", this.Content, Field.Store.COMPRESS, Field.Index.ANALYZED, Field.TermVector.WITH_POSITIONS_OFFSETS));
}
public void Delete()
{
CreateFields();
Index.DeleteByTerm(this.Term);
}
public void Create()
{
// skip blank documents, they are worthless to us (even though they have a title we could index)
if (string.IsNullOrWhiteSpace(Content) || string.IsNullOrWhiteSpace(Title))
{
return;
}
CreateFields();
Index.Create(this);
}
}
代碼: 選擇全部
public static void UpdateByDocId(DocumentModel c, int docId)
{
GetSearcher();
GetWritter();
Writer.SetUseCompoundFile(false);
try
{
Document doc = Searcher.Doc(docId);
IList<Field> replacementFields = c.Fields;
foreach (Field field in replacementFields)
{
string name = field.Name();
string currentValue = doc.Get(name);
if (currentValue != null)
{
// replacement field value
// remove all occurrences of the old field
doc.RemoveFields(name);
// insert the replacement
doc.Add(field);
}
else
{
// new field
doc.Add(field);
}
}
Writer.DeleteDocuments(c.Term);
// write the old document to the index with the modifications
Writer.UpdateDocument(c.Term, doc);
}
finally
{
if (Searcher != null)
{
Searcher.Close();
}
if (Writer != null)
{
Writer.SetUseCompoundFile(true);
Writer.Commit();
Writer.Optimize();
Writer.Close();
}
}
}