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use cassandra::user_type::UserType;
use cassandra::util::Protected;
use cassandra::value::ValueType;
use cassandra::error::*;
use cassandra_sys::CassDataType as _CassDataType;
use cassandra_sys::cass_data_sub_type_count;
use cassandra_sys::cass_data_type_add_sub_type;
use cassandra_sys::cass_data_type_add_sub_type_by_name;
use cassandra_sys::cass_data_type_add_sub_value_type;
use cassandra_sys::cass_data_type_add_sub_value_type_by_name;
use cassandra_sys::cass_data_type_class_name;
use cassandra_sys::cass_data_type_free;
use cassandra_sys::cass_data_type_keyspace;
use cassandra_sys::cass_data_type_new;
use cassandra_sys::cass_data_type_new_from_existing;
use cassandra_sys::cass_data_type_new_tuple;
use cassandra_sys::cass_data_type_new_udt;
use cassandra_sys::cass_data_type_set_class_name;
use cassandra_sys::cass_data_type_set_keyspace;
use cassandra_sys::cass_data_type_set_type_name;
use cassandra_sys::cass_data_type_sub_data_type;
use cassandra_sys::cass_data_type_sub_data_type_by_name;
use cassandra_sys::cass_data_type_sub_type_name;
use cassandra_sys::cass_data_type_type;
use cassandra_sys::cass_data_type_type_name;
use cassandra_sys::cass_user_type_new_from_data_type;
use std::ffi::CString;
/// Any cassandra datatype
#[derive(Debug)]
pub struct DataType(*mut _CassDataType);
#[derive(Debug)]
pub struct ConstDataType(*const _CassDataType);
// The underlying C types have no thread-local state, but do not support access
// from multiple threads: https://datastax.github.io/cpp-driver/topics/#thread-safety
unsafe impl Send for DataType {}
unsafe impl Send for ConstDataType {}
impl Protected<*mut _CassDataType> for DataType {
fn inner(&self) -> *mut _CassDataType { self.0 }
fn build(inner: *mut _CassDataType) -> Self { if inner.is_null() { panic!("Unexpected null pointer") }; DataType(inner) }
}
impl Protected<*const _CassDataType> for ConstDataType {
fn inner(&self) -> *const _CassDataType { self.0 }
fn build(inner: *const _CassDataType) -> Self { if inner.is_null() { panic!("Unexpected null pointer") }; ConstDataType(inner) }
}
impl Drop for DataType {
/// Frees a data type instance.
fn drop(&mut self) { unsafe { cass_data_type_free(self.0) } }
}
impl DataType {
/// Creates a new data type with value type.
pub fn new(value_type: ValueType) -> Self { unsafe { DataType(cass_data_type_new(value_type.inner())) } }
/// Creates a new data type from an existing data type.
// TODO: can return NULL
pub fn new_user_type(&self) -> UserType { unsafe { UserType::build(cass_user_type_new_from_data_type(self.0)) } }
/// Creates a new data type from an existing data type.
pub fn new_from_existing(&self) -> Self { unsafe { DataType(cass_data_type_new_from_existing(self.0)) } }
/// Creates a new tuple data type.
pub fn new_tuple(item_count: usize) -> Self { unsafe { DataType(cass_data_type_new_tuple(item_count)) } }
/// Creates a new UDT (user defined type) data type.
pub fn new_udt(field_count: usize) -> DataType { unsafe { DataType(cass_data_type_new_udt(field_count)) } }
/// Gets the value type of the specified data type.
pub fn get_type(data_type: DataType) -> ValueType { unsafe { ValueType::build(cass_data_type_type(data_type.0)) } }
/// Gets the type name of a UDT data type.
pub fn type_name<S>(data_type: DataType, type_name: S) -> Result<()>
where S: Into<String> {
unsafe {
let type_name2 = CString::new(type_name.into())?;
let err = cass_data_type_type_name(data_type.0,
&mut type_name2.as_ptr(),
&mut (type_name2.as_bytes().len()));
err.to_result(())
}
}
/// Sets the type name of a UDT data type.
///
/// <b>Note:</b> Only valid for UDT data types.
pub fn set_type_name<S>(data_type: DataType, type_name: S) -> Result<()>
where S: Into<String> {
unsafe {
let type_name_cstr = CString::new(type_name.into())?;
cass_data_type_set_type_name(data_type.0,
type_name_cstr.as_ptr())
.to_result(())
}
}
/// Gets the type name of a UDT data type.
///
/// <b>Note:</b> Only valid for UDT data types.
pub fn keyspace<S>(data_type: DataType, keyspace: S) -> Result<()>
where S: Into<String> {
unsafe {
let keyspace2 = CString::new(keyspace.into())?;
cass_data_type_keyspace(data_type.0,
&mut (keyspace2.as_ptr()),
&mut (keyspace2.as_bytes().len()))
.to_result(())
}
}
/// Sets the keyspace of a UDT data type.
///
/// <b>Note:</b> Only valid for UDT data types.
pub fn set_keyspace<S>(data_type: DataType, keyspace: S) -> Result<()>
where S: Into<String> {
unsafe {
let keyspace_cstr = CString::new(keyspace.into())?;
cass_data_type_set_keyspace(data_type.0,
keyspace_cstr.as_ptr())
.to_result(())
}
}
/// Gets the class name of a custom data type.
///
/// <b>Note:</b> Only valid for custom data types.
pub fn class_name<S>(data_type: DataType, class_name: S) -> Result<()>
where S: Into<String> {
unsafe {
let class_name2 = CString::new(class_name.into())?;
cass_data_type_class_name(data_type.0,
&mut class_name2.as_ptr(),
&mut (class_name2.as_bytes().len()))
.to_result(())
}
}
/// Sets the class name of a custom data type.
///
/// <b>Note:</b> Only valid for custom data types.
pub fn set_class_name<S>(&self, class_name: S) -> Result<()>
where S: Into<String> {
unsafe {
let class_name_cstr = CString::new(class_name.into())?;
cass_data_type_set_class_name(self.0,
class_name_cstr.as_ptr())
.to_result(())
}
}
/// Gets the sub-data type count of a UDT (user defined type), tuple
/// or collection.
///
/// <b>Note:</b> Only valid for UDT, tuple and collection data types.
pub fn sub_type_count<S>(&self) -> usize { unsafe { cass_data_sub_type_count(self.0) } }
/// Gets the sub-data type of a UDT (user defined type), tuple or collection at
/// the specified index.
///
/// <b>Note:</b> Only valid for UDT, tuple and collection data types.
pub fn sub_data_type(&self, index: usize) -> ConstDataType {
// TODO: can return NULL
unsafe { ConstDataType::build(cass_data_type_sub_data_type(self.0, index)) }
}
/// Gets the sub-data type of a UDT (user defined type) at the specified index.
///
/// <b>Note:</b> Only valid for UDT data types.
pub fn sub_data_type_by_name<S>(data_type: DataType, name: S) -> ConstDataType
where S: Into<String> {
unsafe {
let name_cstr = CString::new(name.into()).expect("must be utf8");
// TODO: can return NULL
ConstDataType::build(cass_data_type_sub_data_type_by_name(data_type.0,
name_cstr
.as_ptr()))
}
}
/// Gets the sub-type name of a UDT (user defined type) at the specified index.
///
/// <b>Note:</b> Only valid for UDT data types.
pub fn sub_type_name<S>(data_type: DataType, index: usize, name: S) -> Result<()>
where S: Into<String> {
unsafe {
let name2 = CString::new(name.into())?;
cass_data_type_sub_type_name(data_type.0,
index,
&mut name2.as_ptr(),
&mut (name2.as_bytes().len()))
.to_result(())
}
}
/// Adds a sub-data type to a tuple or collection.
///
/// <b>Note:</b> Only valid for tuple and collection data types.
pub fn add_sub_type(&self, sub_data_type: DataType) -> Result<()> {
unsafe {
cass_data_type_add_sub_type(self.0, sub_data_type.0)
.to_result(())
}
}
/// Gets the sub-data type of a UDT (user defined type) at the specified index.
///
/// <b>Note:</b> Only valid for UDT data types.
pub fn add_sub_type_by_name<S>(&mut self, name: S, sub_data_type: DataType) -> Result<()>
where S: Into<String> {
unsafe {
let sub_data_type_cstr = CString::new(name.into())?;
cass_data_type_add_sub_type_by_name(self.0,
sub_data_type_cstr.as_ptr(),
sub_data_type.0)
.to_result(())
}
}
/// Adds a sub-data type to a tuple or collection using a value type.
///
/// <b>Note:</b> Only valid for tuple and collection data types.
pub fn add_sub_value_type<S>(&self, sub_value_type: ValueType) -> Result<()>
where S: Into<String> {
unsafe {
cass_data_type_add_sub_value_type(self.0, sub_value_type.inner())
.to_result(())
}
}
/// Adds a sub-data type to a tuple or collection using a value type.
///
/// <b>Note:</b> Only valid for tuple and collection data types.
pub fn add_sub_value_type_by_name<S>(&self, name: &str, typ: ValueType) -> Result<()>
where S: Into<String> {
unsafe {
let name_cstr = CString::new(name)?;
cass_data_type_add_sub_value_type_by_name(self.0,
name_cstr.as_ptr(),
typ.inner())
.to_result(())
}
}
// pub fn set_type_name_n<S>(data_type: DataType, type_name: S) -> Result<(), CassError>
// where S: Into<String>
// {
// unsafe {
// let type_name = CString::new(type_name.into()).unwrap();
// CassError::build(cass_data_type_set_type_name_n(data_type.0,
// type_name.as_ptr(),
// type_name.as_bytes().len() as u64))
// .wrap(())
// }
// }
// pub fn set_class_name_n<S>(data_type: DataType, class_name: S) -> Result<(), CassError>
// where S: Into<String>
// {
// unsafe {
// let class_name = CString::new(class_name.into()).unwrap();
// CassError::build(cass_data_type_set_class_name_n(data_type.0,
// class_name.as_ptr(),
// class_name.as_bytes().len() as u64))
// .wrap(())
// }
// }
// pub fn sub_data_type_by_name_n<S>(data_type: DataType, name: S) -> ConstDataType
// where S: Into<String>
// {
// unsafe {
// let name = CString::new(name.into()).unwrap();
// // TODO: can return NULL
// ConstDataType::build(cass_data_type_sub_data_type_by_name_n(data_type.0,
// name.as_ptr(),
// name.as_bytes().len() as u64))
// }
// }
}