Added ability to filter on existence of inflection

4 files changed, 17 insertions, 3 deletions

@@ -33,7 +33,12 @@ namespace verbly {
   {
     return (form::lemmaJoin %= (joinCondition && (form::inflectionCategory == check.getCategory())));
   }
-  
+
+  form::inflection_field::operator filter() const
+  {
+    return (form::lemmaJoin %= (form::inflectionCategory == category_));
+  }
+
   const std::vector<pronunciation>& form::getPronunciations() const
   {
     if (!valid_)
@@ -117,7 +117,9 @@ namespace verbly {
       {
         return category_;
       }
-      
+
+      operator filter() const;
+
     private:
 
       const inflection category_;
@@ -21,6 +21,11 @@ namespace verbly {
     return (lemma::formJoin %= joinCondition) && (lemma::inflectionCategory == check.getCategory());
   }
   
+  lemma::inflection_field::operator filter() const
+  {
+    return (lemma::inflectionCategory == category_);
+  }
+  
   lemma::lemma(const database& db, sqlite3_stmt* row) : db_(&db), valid_(true)
   {
     id_ = sqlite3_column_int(row, 0);
@@ -6,6 +6,7 @@
 #include <list>
 #include <map>
 #include "field.h"
+#include "form.h"
 #include "enums.h"
 #include "filter.h"
 
@@ -13,7 +14,6 @@ struct sqlite3_stmt;
 
 namespace verbly {
   
-  class form;
   class database;
   
   class lemma {
@@ -86,6 +86,8 @@ namespace verbly {
         return category_;
       }
       
+      operator filter() const;
+      
     private:
       
       const inflection category_;