References: #4426

Updated elementtree example to replace the deprecated classical mappings
interface with the current `registry.map_imperatively()` version.

The examples STILL use classical mappings, so the ticket remains open.
This update merely removes the deprecated API in favor of the (temporary?) replacement.

Change-Id: I8ddb86b76d82ac9d87a55edb0225e6b2f6ab4940

1 files changed, 6 insertions, 6 deletions

diff --git a/examples/elementtree/optimized_al.py b/examples/elementtree/optimized_al.py
index 74b4d279d..c68720aaa 100644
--- a/examples/elementtree/optimized_al.py
+++ b/examples/elementtree/optimized_al.py
@@ -20,26 +20,26 @@ from sqlalchemy import Column
 from sqlalchemy import create_engine
 from sqlalchemy import ForeignKey
 from sqlalchemy import Integer
-from sqlalchemy import MetaData
 from sqlalchemy import String
 from sqlalchemy import Table
 from sqlalchemy import Unicode
 from sqlalchemy.orm import aliased
 from sqlalchemy.orm import lazyload
 from sqlalchemy.orm import mapper
+from sqlalchemy.orm import registry
 from sqlalchemy.orm import relationship
 from sqlalchemy.orm import Session
 
 
 e = create_engine("sqlite://")
-meta = MetaData()
+mapper_registry = registry()
 
 # PART II - Table Metadata
 
 # stores a top level record of an XML document.
 documents = Table(
     "documents",
-    meta,
+    mapper_registry.metadata,
     Column("document_id", Integer, primary_key=True),
     Column("filename", String(30), unique=True),
 )
@@ -48,7 +48,7 @@ documents = Table(
 # Element and SubElement objects.
 elements = Table(
     "elements",
-    meta,
+    mapper_registry.metadata,
     Column("element_id", Integer, primary_key=True),
     Column("parent_id", Integer, ForeignKey("elements.element_id")),
     Column("document_id", Integer, ForeignKey("documents.document_id")),
@@ -61,7 +61,7 @@ elements = Table(
 # stored by an Element or SubElement.
 attributes = Table(
     "attributes",
-    meta,
+    mapper_registry.metadata,
     Column(
         "element_id",
         Integer,
@@ -72,7 +72,7 @@ attributes = Table(
     Column("value", Unicode(255)),
 )
 
-meta.create_all(e)
+mapper_registry.metadata.create_all(e)
 
 # PART III - Model