appendWhere and example

client/examples/whereExample.cpp

@@ -0,0 +1,48 @@
+// whereExample.cpp
+
+#include <iostream>
+
+#include "mongo/client/dbclient.h"
+
+using namespace std;
+using namespace mongo;
+
+int main() {
+
+    DBClientConnection conn;
+    string errmsg;
+    if ( ! conn.connect( "127.0.0.1" , errmsg ) ) {
+        cout << "couldn't connect : " << errmsg << endl;
+        throw -11;
+    }
+
+    const char * ns = "test.where";
+
+    conn.remove( ns , emptyObj );
+
+    conn.insert( ns , BUILDOBJ( "name" << "eliot" << "num" << 17 ) );
+    conn.insert( ns , BUILDOBJ( "name" << "sara" << "num" << 24 ) );
+    
+    auto_ptr<DBClientCursor> cursor = conn.query( ns , emptyObj );
+    
+    while ( cursor->more() ) {
+        BSONObj obj = cursor->next();
+        cout << "\t" << obj.jsonString() << endl;
+    }
+
+    cout << "now using $where" << endl;
+
+    BSONObjBuilder query;
+
+    query.appendWhere( "this.name == name" , BUILDOBJ( "name" << "sara" ) );
+
+    cursor = conn.query( ns , query.done() );
+
+    int num = 0;
+    while ( cursor->more() ) {
+        BSONObj obj = cursor->next();
+        cout << "\t" << obj.jsonString() << endl;
+        num++;
+    }
+    assert( num == 1 );
+}