1st version of doc history

src/query/docseq.cpp

@@ -0,0 +1,53 @@
+#ifndef lint
+static char rcsid[] = "@(#$Id: docseq.cpp,v 1.1 2005-11-25 10:02:36 dockes Exp $ (C) 2005 J.F.Dockes";
+#endif
+#include "docseq.h"
+
+bool DocSequenceDb::getDoc(int num, Rcl::Doc &doc, int *percent) 
+{
+    return db ? db->getDoc(num, doc, percent) : false;
+}
+
+int DocSequenceDb::getResCnt()
+{
+    if (!db)
+	return -1;
+    // Need to fetch one document before we can get the result count 
+    Rcl::Doc doc;
+    int percent;
+    db->getDoc(0, doc, &percent);
+    return db->getResCnt();
+}
+
+
+bool DocSequenceHistory::getDoc(int num, Rcl::Doc &doc, int *percent) {
+    // Retrieve history list
+    if (!hist)
+	return false;
+    if (hlist.empty())
+	hlist = hist->getDocHistory();
+
+    if (num < 0 || num >= (int)hlist.size())
+	return false;
+    int skip;
+    if (prevnum >= 0 && num >= prevnum) {
+	skip = num - prevnum;
+    } else {
+	skip = num;
+	it = hlist.begin();
+    }
+    prevnum = num;
+    while (skip--) 
+	it++;
+    if (percent)
+	*percent = 100;
+    return db->getDoc((*it).first, (*it).second, doc);
+}
+
+int DocSequenceHistory::getResCnt()
+{	
+    if (hlist.empty())
+	hlist = hist->getDocHistory();
+    return hlist.size();
+}
+

src/query/docseq.h

@@ -0,0 +1,53 @@
+#ifndef _DOCSEQ_H_INCLUDED_
+#define _DOCSEQ_H_INCLUDED_
+/* @(#$Id: docseq.h,v 1.1 2005-11-25 10:02:36 dockes Exp $  (C) 2004 J.F.Dockes */
+
+#include "rcldb.h"
+#include "history.h"
+
+/** Interface for a list of documents coming from some source.
+
+    The result list display data may come from different sources (ie:
+    history or Db query). We have an interface to make things cleaner.
+*/
+class DocSequence {
+ public:
+    virtual bool getDoc(int num, Rcl::Doc &doc, int *percent) = 0;
+    virtual int getResCnt() = 0;
+    virtual std::string title() = 0;
+};
+
+
+/** A DocSequence from a Db query (there should be one active for this
+    to make sense */
+class DocSequenceDb : public DocSequence {
+ public:
+    DocSequenceDb(Rcl::Db *d) : db(d) {}
+    virtual ~DocSequenceDb() {}
+    virtual bool getDoc(int num, Rcl::Doc &doc, int *percent);
+    virtual int getResCnt();
+    virtual std::string title() {return string("Query results");}
+ private:
+    Rcl::Db *db;
+};
+
+/** A DocSequence coming from the history file */
+class DocSequenceHistory : public DocSequence {
+ public:
+    DocSequenceHistory(Rcl::Db *d, RclQHistory *h) 
+	: db(d), hist(h), prevnum(-1) {}
+    virtual ~DocSequenceHistory() {}
+
+    virtual bool getDoc(int num, Rcl::Doc &doc, int *percent);
+    virtual int getResCnt();
+    virtual std::string title() {return string("Document history");}
+ private:
+    Rcl::Db *db;
+    RclQHistory *hist;
+    int prevnum;
+
+    std::list< std::pair<std::string, std::string> > hlist;
+    std::list< std::pair<std::string, std::string> >::const_iterator it;
+};
+
+#endif /* _DOCSEQ_H_INCLUDED_ */