使用 Python 脚本在 Oracle 中创建 ST_Geometry 类型

使用可调用创建空间类型地理处理工具的 Python 脚本，可将 ST_Geometry 类型、子类型和函数添加到 Oracle 数据库。

执行此操作时，会将名为 sde 的用户添加到数据库。sde 用户拥有 ST_Geometry 类型、子类型、函数和表。

下列步骤介绍如何使用 Python 脚本在 Oracle 数据库中创建 ST_Geometry 类型：

步骤:

1. 从 ArcGIS 客户端安装位置的 DatabaseSupport 目录复制 libst_shapelib（对于 Windows 则为 st_shapelib）库并将其移动到 Oracle 服务器的某一位置上。

   确保使用适合 Oracle 服务器操作系统的库。

   运行创建空间类型工具或脚本的客户端计算机必须能够访问服务器上放置库的目录。如果将库放置到 UNIX 或 Linux 计算机上，请确保数据库管理员对该文件夹具有读访问权限，并对库文件具有执行权限。

2. 将此示例脚本复制到 ArcGIS for Desktop 中的 Python 窗口或任何 Python IDE（如 PythonWin 或 WING）。根据需要更改任意变量值，以与您的站点信息相匹配。

   """
   Name: create_spatial_type.py
   Description: Provide connection information to an enterprise database
   and create spatial type in the database.
   Type create_spatial_type.py -h or create_spatial_type.py --help for usage
   Author: Esri
   """
   
   # Import system modules
   import arcpy, os, optparse, sys
   
   
   # Define usage and version
   parser = optparse.OptionParser(usage = "usage: %prog [Options]", version="%prog 1.0 for " + arcpy.GetInstallInfo()['Version'] )
   
   #Define help and options
   parser.add_option ("--DBMS", dest="Database_type", type="choice", choices=['ORACLE', 'POSTGRESQL', ''], default="", help="Type of enterprise DBMS: ORACLE, or POSTGRESQL.")
   parser.add_option ("-i", dest="Instance", type="string", default="", help="DBMS instance name")
   parser.add_option ("--auth", dest="account_authentication", type ="choice", choices=['DATABASE_AUTH', 'OPERATING_SYSTEM_AUTH'], default='DATABASE_AUTH', help="Authentication type options (case-sensitive):  DATABASE_AUTH, OPERATING_SYSTEM_AUTH.  Default=DATABASE_AUTH")
   parser.add_option ("-U", dest="Dbms_admin", type="string", default="", help="DBMS administrator user")
   parser.add_option ("-P", dest="Dbms_admin_pwd", type="string", default="", help="DBMS administrator password")
   parser.add_option ("-D", dest="Database", type="string", default="none", help="Database name:  Not required for Oracle")
   parser.add_option ("-p", dest="Password", type="string", default="", help="SDE user password")
   parser.add_option ("-t", dest="tablespace", type="string", default="", help="Default tablespace for SDE user")
   parser.add_option ("--path", dest="libpath", type="string", default="", help="path to the ST shape library including library file name.")
   
   # Check if value entered for option
   try:
   	(options, args) = parser.parse_args()
   
   	
   #Check if no system arguments (options) entered
   	if len(sys.argv) == 1:
   		print "%s: error: %s\n" % (sys.argv[0], "No command options given")
   		parser.print_help()
   		sys.exit(3)
   	
   
   	#Usage parameters for spatial database connection
   	database_type = options.Database_type.upper()
   	instance = options.Instance
   	account_authentication = options.account_authentication.upper()
   	password = options.Password 
   	tablespace = options.tablespace
   	database = options.Database.lower()
   	dbms_admin = options.Dbms_admin
   	dbms_admin_pwd = options.Dbms_admin_pwd
   	lib_path = options.libpath
   
   	if( database_type ==""):	
   		print " \n%s: error: \n%s\n" % (sys.argv[0], "DBMS type (--DBMS) must be specified.")
   		parser.print_help()
   		sys.exit(3)		
   
   	# Local variables
   	instance_temp = instance.replace("\\","_")
   	instance_temp = instance_temp.replace("/","_")
   	instance_temp = instance_temp.replace(":","_")
   	Conn_File_NameT = instance_temp + "_" + database
   	
   	if os.environ.get("TEMP") == None:
   		temp = "c:\\temp"	
   	else:
   		temp = os.environ.get("TEMP")
   	
   	if os.environ.get("TMP") == None:
   		temp = "/usr/tmp"		
   	else:
   		temp = os.environ.get("TMP")  
   	
   	Connection_File_Name = Conn_File_NameT + ".sde"
   	Connection_File_Name_full_path = temp + os.sep + Conn_File_NameT + ".sde"
   	
   	
   	# Check for the .sde file and delete it if present
   	arcpy.env.overwriteOutput=True
   	if os.path.exists(Connection_File_Name_full_path):
   		os.remove(Connection_File_Name_full_path)
   	
   	
   	print "\nCreating Database Connection File...\n"	
   	# Process: Create Database Connection File...
   	# Usage:  out_file_location, out_file_name, DBMS_TYPE, instnace, database, account_authentication, username, password, save_username_password(must be true)
   	arcpy.CreateDatabaseConnection_management(out_folder_path=temp, out_name=Connection_File_Name, database_platform=database_type, instance=instance, database=database, account_authentication=account_authentication, username=dbms_admin, password=dbms_admin_pwd, save_user_pass="TRUE")
   	for i in range(arcpy.GetMessageCount()):
   		if "000565" in arcpy.GetMessage(i):   #Check if database connection was successful
   			arcpy.AddReturnMessage(i)
   			arcpy.AddMessage("\n+++++++++")
   			arcpy.AddMessage("Exiting!!")
   			arcpy.AddMessage("+++++++++\n")
   			sys.exit(3)            
   		else:
   			arcpy.AddReturnMessage(i)
   			arcpy.AddMessage("+++++++++\n")	
   	
   	# Process: Create spatial type...
   	try:
   		print "Create spatial type...\n"
   		arcpy.CreateSpatialType_management(input_workspace=Connection_File_Name_full_path, sde_user_password=password, tablespace_name=tablespace, st_shape_library_path=lib_path)
   		print "after spatial type...\n"
   		for i in range(arcpy.GetMessageCount()):
   			arcpy.AddReturnMessage(i)
   		arcpy.AddMessage("+++++++++\n")
   	except:
   		for i in range(arcpy.GetMessageCount()):
   			arcpy.AddReturnMessage(i)
   			
   	if os.path.exists(Connection_File_Name_full_path):
   		os.remove(Connection_File_Name_full_path)
   			
   #Check if no value entered for option	
   except SystemExit as e:
   	if e.code == 2:
   		parser.usage = ""
   		print "\n"
   		parser.print_help()   
   		parser.exit(2)
   

3. 运行更改的脚本在 Oracle 数据库中创建 ST_Geometry 类型、子类型和函数。

将在 sde 用户方案中创建 ST_Geometry 类型、子类型和函数，并在 Oracle 中创建一个形状库条目。

如果打算使用 ST_Transform 函数执行地理变换，则必须从 ArcGIS for Desktop 安装目录复制 pedata 文件夹，将其放置到 Oracle 服务器上，并在服务器上设置指向该位置的 PEDATAHOME 环境变量。