RisegerDB是一个基于R树和R*树主索引的地理空间数据库系统，旨在通过高效的空间数据检索满足各类应用需求。本文档提供了RisegerDB的启动流程、示例用法以及支持的SQL命令语法概述。
这个项目的名字RisegerDB来源于 “Rapid Search of Geographic Database”（Ri-se-ger-DB）即“快速搜素地理数据库”，项目专为地理数据进行快速高效的搜索。
要启动RisegerDB，请使用以下启动脚本：
./scripts/startup.sh
./scripts/shell.sh以下是使用RisegerDB的一系列命令示例：
get databases
preload './test/test_data.json';
use database 'test_db';
get maps;
USE
DATABASE 'test_db'|
MAP 'china_mp'|
SCOPE RECT(
[1, 2],
20000
)|
MODEL province_scope.area_scope.building_model
SEARCH
building_model.KEY_LOOP,
building_model.name
WHERE
IN RECT(
[4000, 1000],
5000
)
OR OUT RECT(
[777.5, 72658.1],
45.2
)
AND building_model.floorArea > 1000;
USE use_clause SEARCH search_clause WHERE where_clause
USE use_clause SEARCH search_clause
SEARCH search_clause WHERE where_clause
USE use_clause
SEARCH search_clause
WHERE where_clause
GET DATABASES
GET MAPS
GET MODELSPRELOAD 'file_path'use_statement "|" use_statements
use_statement
use_statement:
DATABASE 'database_name'
| MAP 'map_name'
| SCOPE rectangle_expression
| MODEL 'model_expression'search_clause: strings_expressionwhere_clause: bool_conditionbool_condition:
"(" bool_condition ")"
| bool_condition_0 "OR" bool_condition_0
| bool_condition_0
bool_condition_0:
bool_condition_1 "AND" bool_condition_1
| bool_condition_1
bool_condition_1:
"!" bool_condition_2
| bool_condition_2
bool_condition_2:
"IN" graphic_expression
| "OUT" graphic_expression
| bool_condition_3
bool_condition_3:
num_condition ">" bool_condition_3
| num_condition ">=" bool_condition_3
| num_condition "<" bool_condition_3
| num_condition "<=" bool_condition_3
| num_condition "=" bool_condition_3
| num_condition
num_condition:
"(" num_condition ")"
| "-" num_condition
| num_condition_0
num_condition_0:
| num_condition_1 "+" num_condition
| num_condition_1 "-" num_condition
| num_condition_1
num_condition_1:
number_entity "*" num_condition
| number_entity "/" num_condition
| number_entity
attribute_expression:
string "." string
graphic_expression:
rectangle_expression
rectangle_expression:
"RECT" "(" coord_expression "," num_condition ")"
coord_expression:
"COORD" "(" num_condition "," num_condition ")"
strings_expression:
string_entity "," strings_expression
| string_entity
number_entity:
number
| attribute_expression
string_entity:
string
| attribute_expressionEND:number
END:string欢迎使用、修改和为RisegerDB贡献代码。有关更详细的信息和更新，请查看官方 RisegerDB存储库.
愉快的编码！