迁移关系类

摘要

将基于 ObjectID 的关系类迁移到基于 GlobalID 的关系类。

用法

• 此工具可将基于 ObjectID 的关系类修改为基于 GlobalID 的关系类，从而满足运行时地理数据库的要求。

• 输入关系类中输入的源要素类或表必须具有一个靠前的 GlobalID 字段使用此工具。同时，目标类也必须具有一个 GlobalID 字段。

• 现有输入关系类必须基于 ObjectID。可能未对数据启用存档。

• 此工具支持将版本化和非版本化的数据作为输入。

• 此工具不支持将要素关联的注记关系类作为输入，因为这些关系必须保持基于 ObjectID。

• 建议将数据的备份副本用作此工具的输入。

语法

MigrateRelationshipClass_management (in_relationship_class)

参数	说明	数据类型
in_relationship_class	基于 ObjectID 的关系类，将被迁移至基于 GlobalID 的关系类。源要素类和目标要素类或表必须已经具有 GlobalID。	Relationship Class

代码实例

MigrateRelationshipClass 示例 1（Python 窗口）

以下 Python 窗口脚本演示了如何在即时模式下使用 MigrateRelationshipClass 工具。

arcpy.MigrateRelationshipClass_management(r'C:\Data\Relationships.gdb\OneToMany')

MigrateRelationshipClass 示例 2（独立脚本）

以下脚本演示了如何在独立脚本中使用 MigrateRelationshipClass 工具。

# Name: MigrateRelationshipClass_Example.py
# Description: Migrate an ObjectID-based relationship class to a GlobalID-based
#       relationship class. This script lists the ObjectID-based relationships classes
#       in a workspace, checks for GlobalIDs in the origin, then runs the tool

# Import system modules
import arcpy

# Set local variables
workspace = r'C:\Data\Relationships.gdb'

# List all of the relationship classes within the given workspace
rc_list = [c.name for c in arcpy.Describe(workspace).children if c.datatype == "RelationshipClass"]

# Build a list of relationship classes which have an OBJECTID based origin class key
rc_migrate = []
for rc in rc_list:
    rc_path = workspace + "\\" + rc
    rc_desc = arcpy.Describe(rc_path)
    for item in rc_desc.OriginClassKeys:
        if "OBJECTID" in item:
            rc_migrate.append(rc_path)

# Check that the origin feature classes have Global Ids
rc_final = []
for rel in rc_migrate:
    originfc = workspace + "\\" + arcpy.Describe(rel).originClassNames[0]
    if arcpy.ListFields(originfc,"","GlobalID"):
        rc_final.append(rel)
        print("Adding {0}  to the list to migrate. \n".format(rel.rsplit("\\",1)[1]))
    else:
        print("{0} must have Global Ids to migrate relationship class.\n".format(originfc.rsplit("\\",1)[1]))

# Pass the list of valid relationship classes into the Migrate Relationship tool
print("Passing valid relationship classes into the Migrate Relationship Class tool.\n")
for rel_class in rc_final:
    print("Migrating {0}... \n".format(rel_class.rsplit("\\",1)[1]))
    arcpy.MigrateRelationshipClass_management(rel_class)
    print(arcpy.GetMessages() + "\n")

环境

• 当前工作空间

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