Added some comments about Antelope and Coffee.
This commit is contained in:
nvt
Nicolas Tsiftes
parent
31da83d0a3
commit
757a54f63c
6 changed files with 89 additions and 28 deletions
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@ -39,59 +39,82 @@
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#include "contiki-conf.h"
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/* Features. Include only what is needed in order to save space. */
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/*----------------------------------------------------------------------------*/
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/* Optional Antelope features. Include only what is needed
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in order to save space. */
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/* Support join operations on relations. */
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#ifndef DB_FEATURE_JOIN
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#define DB_FEATURE_JOIN 1
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#endif /* DB_FEATURE_JOIN */
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/* Support tuple removals. */
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#ifndef DB_FEATURE_REMOVE
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#define DB_FEATURE_REMOVE 1
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#endif /* DB_FEATURE_REMOVE */
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/* Support floating-point values in attributes. */
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#ifndef DB_FEATURE_FLOATS
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#define DB_FEATURE_FLOATS 0
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#endif /* DB_FEATURE_FLOATS */
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/* Optimize storage access for the Coffee file system. */
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#ifndef DB_FEATURE_COFFEE
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#define DB_FEATURE_COFFEE 1
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#endif /* DB_FEATURE_COFFEE */
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/* Enable basic data integrity checks. */
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#ifndef DB_FEATURE_INTEGRITY
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#define DB_FEATURE_INTEGRITY 0
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#endif /* DB_FEATURE_INTEGRITY */
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/*----------------------------------------------------------------------------*/
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/* Configuration parameters that may be trimmed to save space. */
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/* The size of the error message buffer used by the parser. */
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#ifndef DB_ERROR_BUF_SIZE
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#define DB_ERROR_BUF_SIZE 50
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#endif /* DB_ERROR_BUF_SIZE */
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/* The maximum number of indexes in use by all relations loaded in memory. */
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#ifndef DB_INDEX_POOL_SIZE
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#define DB_INDEX_POOL_SIZE 3
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#endif /* DB_INDEX_POOL_SIZE */
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/* The maximum number of relations loaded in memory. */
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#ifndef DB_RELATION_POOL_SIZE
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#define DB_RELATION_POOL_SIZE 5
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#endif /* DB_RELATION_POOL_SIZE */
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/* The maximum number of attributes loaded in memory. */
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#ifndef DB_ATTRIBUTE_POOL_SIZE
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#define DB_ATTRIBUTE_POOL_SIZE 16
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#endif /* DB_ATTRIBUTE_POOL_SIZE */
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/* The maximum number of attributes in a relation. */
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#ifndef DB_MAX_ATTRIBUTES_PER_RELATION
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#define DB_MAX_ATTRIBUTES_PER_RELATION 6
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#endif /* DB_MAX_ATTRIBUTES_PER_RELATION */
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/* The maximum physical storage size on an attribute value. */
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#ifndef DB_MAX_ELEMENT_SIZE
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#define DB_MAX_ELEMENT_SIZE 16
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#endif /* DB_MAX_ELEMENT_SIZE */
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/* The maximum size of the LVM bytecode compiled from a
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single database query. */
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#ifndef DB_VM_BYTECODE_SIZE
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#define DB_VM_BYTECODE_SIZE 128
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#endif /* DB_VM_BYTECODE_SIZE */
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/*----------------------------------------------------------------------------*/
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/* Language options. */
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/* The maximum length of a database query in AQL text format. */
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#ifndef AQL_MAX_QUERY_LENGTH
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#define AQL_MAX_QUERY_LENGTH 128
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#endif /* AQL_MAX_QUERY_LENGTH */
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@ -100,78 +123,109 @@
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#define AQL_MAX_VALUE_LENGTH DB_MAX_ELEMENT_SIZE
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#endif /* AQL_MAX_VALUE_LENGTH */
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/* The maximum number of relations used in a single query. */
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#ifndef AQL_RELATION_LIMIT
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#define AQL_RELATION_LIMIT 3
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#endif /* AQL_RELATION_LIMIT */
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/* The maximum number of attributes used in a single query. */
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#ifndef AQL_ATTRIBUTE_LIMIT
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#define AQL_ATTRIBUTE_LIMIT 5
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#endif /* AQL_ATTRIBUTE_LIMIT */
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/*----------------------------------------------------------------------------*/
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/* Physical storage options. Changing these may cause compatibility problems. */
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/*
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* Physical storage options. Changing these options might cause
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* compatibility problems if the database files are moved between
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* different installations of Antelope.
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*/
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/* The default relation file size to reserve when using Coffee. */
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#ifndef DB_COFFEE_RESERVE_SIZE
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#define DB_COFFEE_RESERVE_SIZE (128 * 1024UL)
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#endif /* DB_COFFEE_RESERVE_SIZE */
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/* The maximum size of the physical storage of a tuple (labelled a "row"
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in Antelope's terminology. */
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#ifndef DB_MAX_CHAR_SIZE_PER_ROW
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#define DB_MAX_CHAR_SIZE_PER_ROW 64
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#endif /* DB_MAX_CHAR_SIZE_PER_ROW */
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/* The maximum file name length to use for creating various database file. */
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#ifndef DB_MAX_FILENAME_LENGTH
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#define DB_MAX_FILENAME_LENGTH 16
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#endif /* DB_MAX_FILENAME_LENGTH */
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/* The maximum length of an attribute name. */
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#ifndef ATTRIBUTE_NAME_LENGTH
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#define ATTRIBUTE_NAME_LENGTH 12
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#endif /* ATTRIBUTE_NAME_LENGTH */
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/* The maximum length on a relation name. */
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#ifndef RELATION_NAME_LENGTH
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#define RELATION_NAME_LENGTH 10
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#endif /* RELATION_NAME_LENGTH */
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/* The name of the intermediate "result" relation file, which is used
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for presenting the result of a query to a user. */
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#ifndef RESULT_RELATION
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#define RESULT_RELATION "db-result"
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#endif /* RESULT_RELATION */
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#ifndef TEMP_RELATION
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#define TEMP_RELATION "db-temp"
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#endif /* TEMP_RELATION */
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/* The name of the relation used for processing a REMOVE query. */
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#ifndef REMOVE_RELATION
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#define REMOVE_RELATION "db-remove"
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#endif /* REMOVE_RELATION */
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/*----------------------------------------------------------------------------*/
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/* Index options. */
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#ifndef DB_INDEX_COST
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#define DB_INDEX_COST 64
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#endif /* DB_INDEX_COST */
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/* The maximum number of hash table indexes. */
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#ifndef DB_MEMHASH_INDEX_LIMIT
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#define DB_MEMHASH_INDEX_LIMIT 1
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#endif /* DB_MEMHASH_INDEX_LIMIT */
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/* The default hash table index size. */
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#ifndef DB_MEMHASH_TABLE_SIZE
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#define DB_MEMHASH_TABLE_SIZE 61
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#endif /* DB_MEMHASH_TABLE_SIZE */
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/* The maximum number of Maxheap indexes. */
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#ifndef DB_HEAP_INDEX_LIMIT
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#define DB_HEAP_INDEX_LIMIT 1
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#endif /* DB_HEAP_INDEX_LIMIT */
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/* The maximum number of buckets cached in the MaxHeap index. */
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#ifndef DB_HEAP_CACHE_LIMIT
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#define DB_HEAP_CACHE_LIMIT 1
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#endif /* DB_HEAP_CACHE_LIMIT */
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/*----------------------------------------------------------------------------*/
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/* Propositional Logic Engine options. */
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#ifndef PLE_MAX_NAME_LENGTH
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#define PLE_MAX_NAME_LENGTH ATTRIBUTE_NAME_LENGTH
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#endif /* PLE_MAX_NAME_LENGTH */
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/* LVM options. */
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#ifndef PLE_MAX_VARIABLE_ID
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#define PLE_MAX_VARIABLE_ID AQL_ATTRIBUTE_LIMIT - 1
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#endif /* PLE_MAX_VARIABLE_ID */
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/* The maximum length of a variable in LVM. This value should preferably
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be identical to the maximum attribute name length. */
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#ifndef LVM_MAX_NAME_LENGTH
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#define LVM_MAX_NAME_LENGTH ATTRIBUTE_NAME_LENGTH
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#endif /* LVM_MAX_NAME_LENGTH */
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#ifndef PLE_USE_FLOATS
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#define PLE_USE_FLOATS DB_FEATURE_FLOATS
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#endif /* PLE_USE_FLOATS */
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/* The maximum variable identifier number in the LVM. The default
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value corresponds to the highest attribute ID. */
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#ifndef LVM_MAX_VARIABLE_ID
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#define LVM_MAX_VARIABLE_ID AQL_ATTRIBUTE_LIMIT - 1
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#endif /* LVM_MAX_VARIABLE_ID */
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/* Specify whether floats should be used or not inside the LVM. */
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#ifndef LVM_USE_FLOATS
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#define LVM_USE_FLOATS DB_FEATURE_FLOATS
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#endif /* LVM_USE_FLOATS */
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#endif /* !DB_OPTIONS_H */
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