examples/udt/udt.c - cassandra-cpp-driver - Git at Google

 /*
   This is free and unencumbered software released into the public domain.

   Anyone is free to copy, modify, publish, use, compile, sell, or
   distribute this software, either in source code form or as a compiled
   binary, for any purpose, commercial or non-commercial, and by any
   means.

   In jurisdictions that recognize copyright laws, the author or authors
   of this software dedicate any and all copyright interest in the
   software to the public domain. We make this dedication for the benefit
   of the public at large and to the detriment of our heirs and
   successors. We intend this dedication to be an overt act of
   relinquishment in perpetuity of all present and future rights to this
   software under copyright law.

   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
   IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
   OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
   ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
   OTHER DEALINGS IN THE SOFTWARE.

   For more information, please refer to <http://unlicense.org/>
 */

 #include <assert.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>

 #include "cassandra.h"

 CassUuidGen* uuid_gen;
 const CassSchemaMeta* schema_meta;

 void print_error(CassFuture* future) {
   const char* message;
   size_t message_length;
   cass_future_error_message(future, &message, &message_length);
   fprintf(stderr, "Error: %.*s\n", (int)message_length, message);
 }

 CassCluster* create_cluster(const char* hosts) {
   CassCluster* cluster = cass_cluster_new();
   cass_cluster_set_contact_points(cluster, hosts);
   return cluster;
 }

 CassError connect_session(CassSession* session, const CassCluster* cluster) {
   CassError rc = CASS_OK;
   CassFuture* future = cass_session_connect(session, cluster);

   cass_future_wait(future);
   rc = cass_future_error_code(future);
   if (rc != CASS_OK) {
     print_error(future);
   }
   cass_future_free(future);

   return rc;
 }

 CassError execute_query(CassSession* session, const char* query) {
   CassError rc = CASS_OK;
   CassFuture* future = NULL;
   CassStatement* statement = cass_statement_new(query, 0);

   future = cass_session_execute(session, statement);
   cass_future_wait(future);

   rc = cass_future_error_code(future);
   if (rc != CASS_OK) {
     print_error(future);
   }

   cass_future_free(future);
   cass_statement_free(statement);

   return rc;
 }

 CassError insert_into_udt(CassSession* session) {
   CassError rc = CASS_OK;
   CassStatement* statement = NULL;
   CassFuture* future = NULL;

   CassUuid id;
   char id_str[CASS_UUID_STRING_LENGTH];
   const CassKeyspaceMeta* keyspace_meta = NULL;
   const CassDataType* udt_address = NULL;
   const CassDataType* udt_phone = NULL;

   const char* query = "INSERT INTO examples.udt (id, address) VALUES (?, ?)";

   statement = cass_statement_new(query, 2);

   cass_uuid_gen_time(uuid_gen, &id);
   cass_uuid_string(id, id_str);

   keyspace_meta = cass_schema_meta_keyspace_by_name(schema_meta, "examples");
   if (keyspace_meta != NULL) {
     udt_address = cass_keyspace_meta_user_type_by_name(keyspace_meta, "address");
     udt_phone = cass_keyspace_meta_user_type_by_name(keyspace_meta, "phone_numbers");
   }

   if (udt_address != NULL && udt_phone != NULL) {
     int i;
     CassUserType* address = cass_user_type_new_from_data_type(udt_address);
     CassCollection* phone = cass_collection_new(CASS_COLLECTION_TYPE_SET, 2);

     for (i = 0; i < 2; ++i) {
       CassUserType* phone_numbers = cass_user_type_new_from_data_type(udt_phone);
       cass_user_type_set_int32_by_name(phone_numbers, "phone1", i + 1);
       cass_user_type_set_int32_by_name(phone_numbers, "phone2", i + 2);
       cass_collection_append_user_type(phone, phone_numbers);
       cass_user_type_free(phone_numbers);
     }

     cass_user_type_set_string_by_name(address, "street", id_str);
     cass_user_type_set_string_by_name(address, "city", id_str);
     cass_user_type_set_int32_by_name(address, "zip", (cass_int32_t)id.time_and_version);
     cass_user_type_set_collection_by_name(address, "phone", phone);

     cass_statement_bind_uuid(statement, 0, id);
     cass_statement_bind_user_type(statement, 1, address);

     future = cass_session_execute(session, statement);
     cass_future_wait(future);

     rc = cass_future_error_code(future);
     if (rc != CASS_OK) {
       print_error(future);
     }

     cass_future_free(future);
     cass_user_type_free(address);
     cass_collection_free(phone);
   }

   cass_statement_free(statement);

   return rc;
 }

 CassError select_from_udt(CassSession* session) {
   CassError rc = CASS_OK;
   CassStatement* statement = NULL;
   CassFuture* future = NULL;

   const char* query = "SELECT * FROM examples.udt";

   statement = cass_statement_new(query, 0);

   future = cass_session_execute(session, statement);
   cass_future_wait(future);

   rc = cass_future_error_code(future);
   if (rc != CASS_OK) {
     print_error(future);
   } else {
     const CassResult* result = NULL;
     CassIterator* rows = NULL;

     result = cass_future_get_result(future);
     rows = cass_iterator_from_result(result);

     while (cass_iterator_next(rows)) {
       CassUuid id;
       char id_str[CASS_UUID_STRING_LENGTH];
       const CassRow* row = cass_iterator_get_row(rows);
       const CassValue* id_value = cass_row_get_column_by_name(row, "id");
       const CassValue* address_value = cass_row_get_column_by_name(row, "address");
       CassIterator* fields = cass_iterator_fields_from_user_type(address_value);

       cass_value_get_uuid(id_value, &id);
       cass_uuid_string(id, id_str);

       printf("id %s ", id_str);

       while (fields != NULL && cass_iterator_next(fields)) {
         const char* field_name;
         size_t field_name_length;
         const CassValue* field_value = NULL;
         cass_iterator_get_user_type_field_name(fields, &field_name, &field_name_length);
         field_value = cass_iterator_get_user_type_field_value(fields);
         printf("%.*s ", (int)field_name_length, field_name);

         if (!cass_value_is_null(field_value)) {
           if (cass_value_type(field_value) == CASS_VALUE_TYPE_VARCHAR) {
             const char* text;
             size_t text_length;
             cass_value_get_string(field_value, &text, &text_length);
             printf("\"%.*s\" ", (int)text_length, text);
           } else if (cass_value_type(field_value) == CASS_VALUE_TYPE_INT) {
             cass_int32_t i;
             cass_value_get_int32(field_value, &i);
             printf("%d ", i);
           } else if (cass_value_type(field_value) == CASS_VALUE_TYPE_SET) {
             CassIterator* phone_numbers = cass_iterator_from_collection(field_value);
             while (cass_iterator_next(phone_numbers)) {
               const CassValue* phone_value = cass_iterator_get_value(phone_numbers);
               CassIterator* phone_fields = cass_iterator_fields_from_user_type(phone_value);
               assert(cass_value_type(phone_value) == CASS_VALUE_TYPE_UDT);
               while (cass_iterator_next(phone_fields)) {
                 const CassValue* phone_number_value =
                     cass_iterator_get_user_type_field_value(phone_fields);
                 cass_int32_t i;
                 cass_value_get_int32(phone_number_value, &i);
                 printf("%d ", i);
               }
             }
           } else {
             printf("<invalid> ");
           }
         } else {
           printf("<null> ");
         }
       }

       printf("\n");
     }

     cass_result_free(result);
     cass_iterator_free(rows);
   }

   cass_future_free(future);
   cass_statement_free(statement);

   return rc;
 }

 int main(int argc, char* argv[]) {
   CassCluster* cluster = NULL;
   CassSession* session = cass_session_new();
   char* hosts = "127.0.0.1";
   if (argc > 1) {
     hosts = argv[1];
   }
   cluster = create_cluster(hosts);

   uuid_gen = cass_uuid_gen_new();

   if (connect_session(session, cluster) != CASS_OK) {
     cass_cluster_free(cluster);
     cass_session_free(session);
     return -1;
   }

   execute_query(session, "CREATE KEYSPACE examples WITH replication = { \
                            'class': 'SimpleStrategy', 'replication_factor': '3' }");

   execute_query(session, "CREATE TYPE examples.phone_numbers (phone1 int, phone2 int)");

   execute_query(session, "CREATE TYPE examples.address (street text, city text, zip int, phone "
                          "set<frozen<phone_numbers>>)");

   execute_query(
       session, "CREATE TABLE examples.udt (id timeuuid, address frozen<address>, PRIMARY KEY(id))");

   schema_meta = cass_session_get_schema_meta(session);

   insert_into_udt(session);
   select_from_udt(session);

   cass_cluster_free(cluster);
   cass_session_free(session);

   cass_uuid_gen_free(uuid_gen);
   cass_schema_meta_free(schema_meta);

   return 0;
 }
	/*
	This is free and unencumbered software released into the public domain.

	Anyone is free to copy, modify, publish, use, compile, sell, or
	distribute this software, either in source code form or as a compiled
	binary, for any purpose, commercial or non-commercial, and by any
	means.

	In jurisdictions that recognize copyright laws, the author or authors
	of this software dedicate any and all copyright interest in the
	software to the public domain. We make this dedication for the benefit
	of the public at large and to the detriment of our heirs and
	successors. We intend this dedication to be an overt act of
	relinquishment in perpetuity of all present and future rights to this
	software under copyright law.

	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
	IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
	OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	OTHER DEALINGS IN THE SOFTWARE.

	For more information, please refer to <http://unlicense.org/>
	*/

	#include <assert.h>
	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>

	#include "cassandra.h"

	CassUuidGen* uuid_gen;
	const CassSchemaMeta* schema_meta;

	void print_error(CassFuture* future) {
	const char* message;
	size_t message_length;
	cass_future_error_message(future, &message, &message_length);
	fprintf(stderr, "Error: %.*s\n", (int)message_length, message);
	}

	CassCluster* create_cluster(const char* hosts) {
	CassCluster* cluster = cass_cluster_new();
	cass_cluster_set_contact_points(cluster, hosts);
	return cluster;
	}

	CassError connect_session(CassSession* session, const CassCluster* cluster) {
	CassError rc = CASS_OK;
	CassFuture* future = cass_session_connect(session, cluster);

	cass_future_wait(future);
	rc = cass_future_error_code(future);
	if (rc != CASS_OK) {
	print_error(future);
	}
	cass_future_free(future);

	return rc;
	}

	CassError execute_query(CassSession* session, const char* query) {
	CassError rc = CASS_OK;
	CassFuture* future = NULL;
	CassStatement* statement = cass_statement_new(query, 0);

	future = cass_session_execute(session, statement);
	cass_future_wait(future);

	rc = cass_future_error_code(future);
	if (rc != CASS_OK) {
	print_error(future);
	}

	cass_future_free(future);
	cass_statement_free(statement);

	return rc;
	}

	CassError insert_into_udt(CassSession* session) {
	CassError rc = CASS_OK;
	CassStatement* statement = NULL;
	CassFuture* future = NULL;

	CassUuid id;
	char id_str[CASS_UUID_STRING_LENGTH];
	const CassKeyspaceMeta* keyspace_meta = NULL;
	const CassDataType* udt_address = NULL;
	const CassDataType* udt_phone = NULL;

	const char* query = "INSERT INTO examples.udt (id, address) VALUES (?, ?)";

	statement = cass_statement_new(query, 2);

	cass_uuid_gen_time(uuid_gen, &id);
	cass_uuid_string(id, id_str);

	keyspace_meta = cass_schema_meta_keyspace_by_name(schema_meta, "examples");
	if (keyspace_meta != NULL) {
	udt_address = cass_keyspace_meta_user_type_by_name(keyspace_meta, "address");
	udt_phone = cass_keyspace_meta_user_type_by_name(keyspace_meta, "phone_numbers");
	}

	if (udt_address != NULL && udt_phone != NULL) {
	int i;
	CassUserType* address = cass_user_type_new_from_data_type(udt_address);
	CassCollection* phone = cass_collection_new(CASS_COLLECTION_TYPE_SET, 2);

	for (i = 0; i < 2; ++i) {
	CassUserType* phone_numbers = cass_user_type_new_from_data_type(udt_phone);
	cass_user_type_set_int32_by_name(phone_numbers, "phone1", i + 1);
	cass_user_type_set_int32_by_name(phone_numbers, "phone2", i + 2);
	cass_collection_append_user_type(phone, phone_numbers);
	cass_user_type_free(phone_numbers);
	}

	cass_user_type_set_string_by_name(address, "street", id_str);
	cass_user_type_set_string_by_name(address, "city", id_str);
	cass_user_type_set_int32_by_name(address, "zip", (cass_int32_t)id.time_and_version);
	cass_user_type_set_collection_by_name(address, "phone", phone);

	cass_statement_bind_uuid(statement, 0, id);
	cass_statement_bind_user_type(statement, 1, address);

	future = cass_session_execute(session, statement);
	cass_future_wait(future);

	rc = cass_future_error_code(future);
	if (rc != CASS_OK) {
	print_error(future);
	}

	cass_future_free(future);
	cass_user_type_free(address);
	cass_collection_free(phone);
	}

	cass_statement_free(statement);

	return rc;
	}

	CassError select_from_udt(CassSession* session) {
	CassError rc = CASS_OK;
	CassStatement* statement = NULL;
	CassFuture* future = NULL;

	const char* query = "SELECT * FROM examples.udt";

	statement = cass_statement_new(query, 0);

	future = cass_session_execute(session, statement);
	cass_future_wait(future);

	rc = cass_future_error_code(future);
	if (rc != CASS_OK) {
	print_error(future);
	} else {
	const CassResult* result = NULL;
	CassIterator* rows = NULL;

	result = cass_future_get_result(future);
	rows = cass_iterator_from_result(result);

	while (cass_iterator_next(rows)) {
	CassUuid id;
	char id_str[CASS_UUID_STRING_LENGTH];
	const CassRow* row = cass_iterator_get_row(rows);
	const CassValue* id_value = cass_row_get_column_by_name(row, "id");
	const CassValue* address_value = cass_row_get_column_by_name(row, "address");
	CassIterator* fields = cass_iterator_fields_from_user_type(address_value);

	cass_value_get_uuid(id_value, &id);
	cass_uuid_string(id, id_str);

	printf("id %s ", id_str);

	while (fields != NULL && cass_iterator_next(fields)) {
	const char* field_name;
	size_t field_name_length;
	const CassValue* field_value = NULL;
	cass_iterator_get_user_type_field_name(fields, &field_name, &field_name_length);
	field_value = cass_iterator_get_user_type_field_value(fields);
	printf("%.*s ", (int)field_name_length, field_name);

	if (!cass_value_is_null(field_value)) {
	if (cass_value_type(field_value) == CASS_VALUE_TYPE_VARCHAR) {
	const char* text;
	size_t text_length;
	cass_value_get_string(field_value, &text, &text_length);
	printf("\"%.*s\" ", (int)text_length, text);
	} else if (cass_value_type(field_value) == CASS_VALUE_TYPE_INT) {
	cass_int32_t i;
	cass_value_get_int32(field_value, &i);
	printf("%d ", i);
	} else if (cass_value_type(field_value) == CASS_VALUE_TYPE_SET) {
	CassIterator* phone_numbers = cass_iterator_from_collection(field_value);
	while (cass_iterator_next(phone_numbers)) {
	const CassValue* phone_value = cass_iterator_get_value(phone_numbers);
	CassIterator* phone_fields = cass_iterator_fields_from_user_type(phone_value);
	assert(cass_value_type(phone_value) == CASS_VALUE_TYPE_UDT);
	while (cass_iterator_next(phone_fields)) {
	const CassValue* phone_number_value =
	cass_iterator_get_user_type_field_value(phone_fields);
	cass_int32_t i;
	cass_value_get_int32(phone_number_value, &i);
	printf("%d ", i);
	}
	}
	} else {
	printf("<invalid> ");
	}
	} else {
	printf("<null> ");
	}
	}

	printf("\n");
	}

	cass_result_free(result);
	cass_iterator_free(rows);
	}

	cass_future_free(future);
	cass_statement_free(statement);

	return rc;
	}

	int main(int argc, char* argv[]) {
	CassCluster* cluster = NULL;
	CassSession* session = cass_session_new();
	char* hosts = "127.0.0.1";
	if (argc > 1) {
	hosts = argv[1];
	}
	cluster = create_cluster(hosts);

	uuid_gen = cass_uuid_gen_new();

	if (connect_session(session, cluster) != CASS_OK) {
	cass_cluster_free(cluster);
	cass_session_free(session);
	return -1;
	}

	execute_query(session, "CREATE KEYSPACE examples WITH replication = { \
	'class': 'SimpleStrategy', 'replication_factor': '3' }");

	execute_query(session, "CREATE TYPE examples.phone_numbers (phone1 int, phone2 int)");

	execute_query(session, "CREATE TYPE examples.address (street text, city text, zip int, phone "
	"set<frozen<phone_numbers>>)");

	execute_query(
	session, "CREATE TABLE examples.udt (id timeuuid, address frozen<address>, PRIMARY KEY(id))");

	schema_meta = cass_session_get_schema_meta(session);

	insert_into_udt(session);
	select_from_udt(session);

	cass_cluster_free(cluster);
	cass_session_free(session);

	cass_uuid_gen_free(uuid_gen);
	cass_schema_meta_free(schema_meta);

	return 0;
	}