Changeset 337 for trunk/gsdl/src/recpt/queryaction.cpp

Timestamp:

1999-07-02T10:48:46+12:00 (25 years ago)

Author:

sjboddie

Message:

had a go at getting a query result format string working

File:

• trunk/gsdl/src/recpt/queryaction.cpp (modified) (4 diffs)

trunk/gsdl/src/recpt/queryaction.cpp

@@ -12 +12 @@
 /*
    $Log$
+   Revision 1.9  1999/07/01 22:48:46  sjboddie
+   had a go at getting a query result format string working
+
    Revision 1.8  1999/06/27 22:02:11  sjboddie
    author is added  to queryresults if there is one
@@ -309 +312 @@
 }
 
+// returns false if formatstring has errors
+bool queryaction::parse_formatstring (const text_t &formatstring, text_tarray &formatarray,
+                      text_tmap &metamap, text_tarray &metadata, bool &getParents) {
+
+  formatarray.erase (formatarray.begin(), formatarray.end());
+  metadata.erase (metadata.begin(), metadata.end());
+  getParents = false;
+
+  text_t::const_iterator here = formatstring.begin();
+  text_t::const_iterator end = formatstring.end();
+
+  int metacount = 0;
+  text_t text;
+  while (here != end) {
+
+    if (*here == '\\')
+      text.push_back (*(++here));
+
+    else if (*here == '<') {
+      if (!text.empty()) formatarray.push_back (text);
+      text.clear();
+      text_t meta;
+      here ++;
+      while (*here != '>') {
+    if (here == end) return false;
+    meta.push_back (*here);
+    here ++;
+      }
+      parse_meta (meta, metacount, formatarray, metadata, getParents, metamap);
+
+    } else 
+      text.push_back (*here);
+
+    here ++;
+  }
+  if (!text.empty()) formatarray.push_back (text);
+
+  return true;
+}
+
+void queryaction::get_parent_options (const text_t &instring, text_t &options, 
+                      text_t &meta) {
+
+  options.clear();
+  meta.clear();
+  bool inquotes = false;
+  bool foundcolon = false;
+  text_t::const_iterator here = instring.begin()+6;
+  text_t::const_iterator end = instring.end();
+  while (here != end) {
+    if (*here == '(') inquotes = true;
+    else if (*here == ')') inquotes = false;
+    else if (*here == ':' && !inquotes) foundcolon = true;
+    else if (foundcolon) meta.push_back (*here);
+    else options.push_back (*here);
+    here ++;
+  }
+}
+
+void queryaction::parse_meta (const text_t &meta, int &count, text_tarray &formatarray,
+                  text_tarray &metadata, bool &getParents, text_tmap &metamap) {
+  
+  if (meta == "link" || meta == "/link") formatarray.push_back ("<" + meta + ">");
+  else {
+    text_t met = meta;
+
+    if (meta.size() > 7 && (substr (meta.begin(), meta.begin()+6) == "parent")) {
+      getParents = true;
+      text_t ops;
+      get_parent_options (meta, ops, met);
+    }
+    text_tmap::const_iterator it;
+    if ((it = metamap.find(met)) != metamap.end())
+      formatarray.push_back(meta);
+    else {
+      metamap[met] = count;
+      metadata.push_back (met);
+      formatarray.push_back (meta);
+      count ++;
+    }
+  }
+}
+
+void queryaction::output_results (const ResultDocInfo_tarray &results, const text_tarray &formatarray,
+                  const text_tmap &metamap, displayclass &disp, outconvertclass &outconvert, 
+                  ostream &textout) {
+
+  ResultDocInfo_tarray::const_iterator this_doc = results.begin();
+  ResultDocInfo_tarray::const_iterator end_doc = results.end();
+  text_tmap::const_iterator it;
+
+  textout << "<table cellspacing=4>\n";
+  while (this_doc != end_doc) {
+    textout << "<tr>\n";
+
+    text_tarray::const_iterator this_format = formatarray.begin();
+    text_tarray::const_iterator end_format = formatarray.end();
+
+    while (this_format != end_format) {
+
+      if (*this_format == "<link>")
+    textout << outconvert << disp << "<a href=\"_httpdocument_&cl=search&d=" + (*this_doc).OID + "\">";
+      else if (*this_format == "</link>") 
+    textout << "</a>";
+      else if ((it = metamap.find(*this_format)) != metamap.end())
+    textout << outconvert << disp 
+        << (*this_doc).metadata[(*it).second.getint()].values.back();
+      else if ((*this_format).size() > 7 && 
+           (substr ((*this_format).begin(), (*this_format).begin()+6) == "parent")) {
+    text_t options, meta;
+    get_parent_options (*this_format, options, meta);
+    if ((it = metamap.find(meta)) != metamap.end()) {
+      int metanum = (*it).second.getint();
+      if (options.empty()) {
+        // no options - we just want the immediate parent
+        int num = (*this_doc).metadata[metanum].values.size();
+        if (num > 1)
+          textout << outconvert << disp
+              << (*this_doc).metadata[metanum].values[num-2];
+      } else if (options == "top") {
+        // want the top parent
+        if ((*this_doc).metadata[metanum].values.size() > 1)
+          textout << outconvert << disp
+              << (*this_doc).metadata[metanum].values[0];
+      } else {
+        // the 'all' option 
+        if (substr (options.begin(), options.begin()+3) != "all")
+          // bad format or unknown option
+          textout << outconvert << disp << *this_format;
+        else {
+          text_t::const_iterator fquote = findchar (options.begin(), options.end(), '\'');
+          text_t separator = substr (fquote+1, findchar (fquote+1, options.end(), '\''));
+          text_tarray::const_iterator here = (*this_doc).metadata[metanum].values.begin();
+          // the last metadata value is for the current OID (i.e. it's not a parent)
+          text_tarray::const_iterator end = ((*this_doc).metadata[metanum].values.end()) - 1;
+          bool first = true;
+          while (here != end) {
+        if (!first) textout << outconvert << disp << separator;
+        textout << outconvert << disp << *here;
+        first = false;
+        here ++;
+          }
+        }
+      }
+    } else {
+      // Didn't get any metadata by this name, maybe 
+      // it's just plain text that happened to match (oops!!)
+      textout << outconvert << disp << *this_format;
+    }     
+      } else 
+    textout << outconvert << disp << *this_format;
+      
+      this_format ++;
+      
+    }
+    textout << "</tr>\n";
+    this_doc ++;
+  }
+
+  textout << "</table>\n";
+}
+
 bool queryaction::do_action (cgiargsclass &args, recptproto *collectproto,
                  displayclass &disp, outconvertclass &outconvert, 
                  ostream &textout, ostream &logout) {
+
+  // if we have no format string see if the collection server has one
+  if (formatstring.empty()) {
+    ColInfoResponse_t collectinfo;
+    comerror_t err;
+    collectproto->get_collectinfo (args["c"], collectinfo, err, logout);
+    if (err == noError) {
+      text_tmap::const_iterator result = collectinfo.format.find("result");
+      if (result != collectinfo.format.end())
+    formatstring = (*result).second;
+    }
+  }
+  // if we still don't have a format string use the default
+  if (formatstring.empty()) 
+    formatstring = "\\<td valign=top nowrap\\><link>_icontext_</link>\\</td\\>\\<td\\><Title>\\</td\\>";
 
   if (collectproto == NULL) {
@@ -320 +500 @@
   } else {  
 
+    FilterRequest_t request;
+    FilterResponse_t response;
     text_t quotedstring;
-    FilterResponse_t response;
-    
+    text_tarray formatarray;
+    text_tmap metamap;
+    parse_formatstring (formatstring, formatarray, metamap, 
+            request.fields, request.getParents);
+
     // do the query
-    FilterRequest_t request;
     request.filterResultOptions = FROID | FRmetadata | FRtermFreq;
-    request.fields.push_back ("Title");
-    request.fields.push_back ("Creator");
-    request.getParents = true;
+    //    request.fields.push_back ("Title");
+    //    request.fields.push_back ("Creator");
+    //    request.getParents = true;
     if (!do_query (request, args, collectproto, quotedstring, response, logout))
       return false;
@@ -337 +521 @@
     // output the header
     textout << outconvert << disp << "_query:header_\n_query:content_";
-    
-    // output results 
-    ResultDocInfo_tarray::const_iterator this_doc = response.docInfo.begin();
-    ResultDocInfo_tarray::const_iterator end_doc = response.docInfo.end();
-    
-    textout << "<table cellspacing=4>\n";
-    while (this_doc != end_doc) {
-
-      text_t link = "<a href=\"_httpdocument_&cl=search&d=" + (*this_doc).OID + "\">";
-
-      text_t title;
-      text_tarray::const_iterator this_title = (*this_doc).metadata[0].values.begin();
-      text_tarray::const_iterator end_title = (*this_doc).metadata[0].values.end();
-      while (this_title != end_title) {
-    if ((this_title + 1) == end_title) 
-      title += link + *this_title + "</a>";
-    else 
-      title += *this_title + ": ";
-    this_title ++;
-      }
-      
-      text_t creator;
-      bool first = true;
-      text_tarray::const_iterator this_creator = (*this_doc).metadata[1].values.begin();
-      text_tarray::const_iterator end_creator = (*this_doc).metadata[1].values.end();
-      while (this_creator != end_creator) {
-    if ((*this_creator).empty()) {this_creator ++; continue;}
-    if (first) creator += " by " + *this_creator;
-    else creator += " and " + *this_creator;
-    first = false;
-    this_creator ++;
-      }
-
-      textout << outconvert << disp << "<tr><td valign=top nowrap>" << link 
-          << "_icontext_</a></td><td>" << title << creator << "</td></tr>\n";
-      
-      this_doc ++;
-    }
-    textout << "</table>\n";
+
+    output_results (response.docInfo, formatarray, metamap, disp, outconvert, textout);
+
     
     // output the footer