Handling of the decimal column in the build query (#17)

Author: Toru-Takagi

Diff for: internal/core/gen.go

@@ -173,6 +173,9 @@ func jdbcGet(t ktType, idx int) string {
 		}
 		return fmt.Sprintf(`results.getObject(%d) as%s %s`, idx, nullCast, t.Name)
 	}
+	if t.IsBigDecimal() {
+		return fmt.Sprintf(`results.getBigDecimal(%d)`, idx)
+	}
 	return fmt.Sprintf(`results.get%s(%d)`, t.Name, idx)
 }
 
@@ -364,6 +367,10 @@ func (t ktType) IsUUID() bool {
 	return t.Name == "UUID"
 }
 
+func (t ktType) IsBigDecimal() bool {
+	return t.Name == "java.math.BigDecimal"
+}
+
 func makeType(req *plugin.GenerateRequest, col *plugin.Column) ktType {
 	typ, isEnum := ktInnerType(req, col)
 	return ktType{