quasardb C API
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A single operation containing all parameters to execute the operation in a batch or in a transaction. More...
#include <batch.h>
Data Fields | |
qdb_operation_type_t | type |
The type of the operation. | |
const char * | alias |
qdb_error_t | error |
union { | |
struct { | |
const char * tag | |
} has_tag | |
Tag specific operation parameters. | |
struct { | |
qdb_int_t result | |
qdb_int_t addend | |
The value to add or subtract to the entry. | |
} int_add | |
Integer increment/decrement specific operation parameters. | |
struct { | |
qdb_int_t result | |
The result of the integer get operation. | |
} int_get | |
Integer get specific operation parameters. | |
int_put_update_t int_put | |
Integer put specific operation parameters. | |
int_put_update_t int_update | |
Integer update specific operation parameters. | |
blob_put_update_t blob_put | |
Blob put specific operation parameters. | |
blob_put_update_t blob_update | |
Blob update specific operation parameters. | |
struct { | |
const void * original_content | |
qdb_size_t original_content_size | |
The size of the result buffer. | |
const void * new_content | |
A pointer to the buffer with the data to be written. | |
qdb_size_t new_content_size | |
The size of the buffer pointed by content. | |
const void * comparand | |
A pointer to the comparand. | |
qdb_size_t comparand_size | |
The size of the buffer pointed by comparand. | |
qdb_size_t comparand_offset | |
qdb_time_t expiry_time | |
} blob_cas | |
Blob compare and swap specific operation parameters. | |
struct { | |
const void * content | |
qdb_size_t content_size | |
The size of the result buffer. | |
qdb_size_t content_offset | |
} blob_get | |
Blob get specific operation parameters. | |
struct { | |
const void * original_content | |
qdb_size_t original_content_size | |
The size of the result buffer. | |
const void * new_content | |
A pointer to the buffer with the data to be written. | |
qdb_size_t new_content_size | |
The size of the buffer pointed by content. | |
qdb_time_t expiry_time | |
} blob_get_and_update | |
Blob get and update specific operation parameters. | |
struct { | |
qdb_entry_type_t type | |
The type of the entry returned by the get value operation. | |
const void * blob_content | |
qdb_size_t blob_content_size | |
The size of the result buffer. | |
qdb_int_t int_result | |
} value_get | |
Value get specific operation parameters. | |
}; | |
Operation specific parameters. | |
A single operation containing all parameters to execute the operation in a batch or in a transaction.
You should initialize operations before usage with the qdb_init_operations function.
const char* qdb_operation_t::alias |
A pointer to a null-terminated UTF-8 string representing the alias of the entry.
const void* qdb_operation_t::blob_content |
A pointer to the buffer containing the result of the get operation when the returned type is blob This buffer is API-allocated and will be freed by a call to qdb_release
qdb_size_t qdb_operation_t::comparand_offset |
Optional offset for the comparand. Leave to 0 if not needed.
const void* qdb_operation_t::content |
A pointer to the buffer containing the result of the blob operation This buffer is API-allocated and will be freed by a call to qdb_release
qdb_size_t qdb_operation_t::content_offset |
Optional offset from which the content should be returned. Leave to 0 if not needed.
qdb_error_t qdb_operation_t::error |
A qdb_error_t code indicating success or failure after the operation has been executed
qdb_time_t qdb_operation_t::expiry_time |
The optional expiration time. Use qdb_never_expires for no expiration.
qdb_int_t qdb_operation_t::int_result |
The result of the get operation when the returned type is integer
const void* qdb_operation_t::original_content |
A pointer to the buffer containing the result of the blob operation, if any. This buffer is API-allocated and will be freed by a call to qdb_release
A pointer to the buffer containing the result of the blob operation This buffer is API-allocated and will be freed by a call to qdb_release
qdb_int_t qdb_operation_t::result |
The result of the integer get operation.
A signed 64-bit integer representing the result of the operation
const char* qdb_operation_t::tag |
A pointer to a null-terminated UTF-8 string representing the tag to test for existence
qdb_entry_type_t qdb_operation_t::type |
The result of the get entry type operation.
The type of the entry returned by the get value operation.