Simplify InvalidType

src/types/from_sql.rs

@@ -24,7 +24,7 @@ impl FromSql for f64 {
         match value {
             ValueRef::Integer(i) => Ok(i as f64),
             ValueRef::Real(f) => Ok(f),
-            _ => Err(Error::InvalidType(value.data_type())),
+            _ => Err(Error::InvalidType),
         }
     }
 }

src/types/serde_json.rs

@@ -23,7 +23,7 @@ impl FromSql for Value {
         match value {
                 ValueRef::Text(ref s) => serde_json::from_str(s),
                 ValueRef::Blob(ref b) => serde_json::from_slice(b),
-                _ => return Err(Error::InvalidType(value.data_type())),
+                _ => return Err(Error::InvalidType),
             }
             .map_err(|err| Error::FromSqlConversionFailure(Box::new(err)))
     }

src/types/value_ref.rs

@@ -38,7 +38,7 @@ impl<'a> ValueRef<'a> {
     pub fn as_i64(&self) -> Result<i64> {
         match *self {
             ValueRef::Integer(i) => Ok(i),
-            _ => Err(Error::InvalidType(self.data_type())),
+            _ => Err(Error::InvalidType),
         }
     }
 
@@ -47,7 +47,7 @@ impl<'a> ValueRef<'a> {
     pub fn as_f64(&self) -> Result<f64> {
         match *self {
             ValueRef::Real(f) => Ok(f),
-            _ => Err(Error::InvalidType(self.data_type())),
+            _ => Err(Error::InvalidType),
         }
     }
 
@@ -56,7 +56,7 @@ impl<'a> ValueRef<'a> {
     pub fn as_str(&self) -> Result<&str> {
         match *self {
             ValueRef::Text(ref t) => Ok(t),
-            _ => Err(Error::InvalidType(self.data_type())),
+            _ => Err(Error::InvalidType),
         }
     }
 
@@ -65,7 +65,7 @@ impl<'a> ValueRef<'a> {
     pub fn as_blob(&self) -> Result<&[u8]> {
         match *self {
             ValueRef::Blob(ref b) => Ok(b),
-            _ => Err(Error::InvalidType(self.data_type())),
+            _ => Err(Error::InvalidType),
         }
     }
 }