Merge pull request #74 from aboltart-bug/float_value_to_store_in_varchar_column

Force to convert String type value as real string to avoid error when
used JRuby and for VARCHAR2 parameter is assigned non String value

Author: javornikolov

lib/plsql/jdbc_connection.rb

@@ -371,8 +371,10 @@ def plsql_to_ruby_data_type(metadata)
     def ruby_value_to_ora_value(value, type=nil, metadata={})
       type ||= value.class
       case type.to_s.to_sym
-      when :Fixnum, :String
+      when :Fixnum
         value
+      when :String
+        value.to_s
       when :BigDecimal
         case value
         when TrueClass

spec/plsql/connection_spec.rb

@@ -145,6 +145,10 @@
         expect(@conn.ruby_value_to_ora_value(100, BigDecimal)).to eq java.math.BigDecimal.new(100)
       end
 
+      it "should translate Ruby String to string value" do
+        expect(@conn.ruby_value_to_ora_value(1.1, String)).to eq '1.1'
+      end
+
       it "should translate Ruby Bignum value to BigDecimal when BigDecimal type specified" do
         big_decimal = @conn.ruby_value_to_ora_value(12345678901234567890, BigDecimal)
         expect(big_decimal).to eq java.math.BigDecimal.new("12345678901234567890")