This is an automated email from the ASF dual-hosted git repository.

beto pushed a commit to branch semantic-layer-feature
in repository https://gitbox.apache.org/repos/asf/superset.git

commit baec35409eec9a4c7da3db737b0d57fb168417f2
Author: Beto Dealmeida <[email protected]>
AuthorDate: Fri Feb 6 15:52:37 2026 -0500

    feat: models and DAOs
---
 .../src/superset_core/semantic_layers/types.py     |   2 +-
 superset/connectors/sqla/models.py                 |   6 +-
 superset/daos/semantic_layer.py                    | 152 +++++++++
 superset/explorables/base.py                       | 128 ++++++-
 ...6_33d7e0e21daa_add_semantic_layers_and_views.py | 126 +++++++
 superset/models/sql_lab.py                         |   6 +-
 superset/semantic_layers/models.py                 | 370 +++++++++++++++++++++
 superset/superset_typing.py                        |  50 ++-
 superset/utils/core.py                             |  33 +-
 tests/integration_tests/charts/api_tests.py        |   6 +-
 10 files changed, 848 insertions(+), 31 deletions(-)

diff --git a/superset-core/src/superset_core/semantic_layers/types.py 
b/superset-core/src/superset_core/semantic_layers/types.py
index 42c0cd49050..46bcf707174 100644
--- a/superset-core/src/superset_core/semantic_layers/types.py
+++ b/superset-core/src/superset_core/semantic_layers/types.py
@@ -216,7 +216,7 @@ class Metric:
     name: str
     type: TypeOf[Type]
 
-    definition: str | None
+    definition: str
     description: str | None = None
 
 
diff --git a/superset/connectors/sqla/models.py 
b/superset/connectors/sqla/models.py
index be74a199672..6aabe485de5 100644
--- a/superset/connectors/sqla/models.py
+++ b/superset/connectors/sqla/models.py
@@ -107,6 +107,8 @@ from superset.sql.parse import Table
 from superset.superset_typing import (
     AdhocColumn,
     AdhocMetric,
+    DatasetColumnData,
+    DatasetMetricData,
     ExplorableData,
     Metric,
     QueryObjectDict,
@@ -463,8 +465,8 @@ class BaseDatasource(
             # sqla-specific
             "sql": self.sql,
             # one to many
-            "columns": [o.data for o in self.columns],
-            "metrics": [o.data for o in self.metrics],
+            "columns": [cast(DatasetColumnData, o.data) for o in self.columns],
+            "metrics": [cast(DatasetMetricData, o.data) for o in self.metrics],
             "folders": self.folders,
             # TODO deprecate, move logic to JS
             "order_by_choices": self.order_by_choices,
diff --git a/superset/daos/semantic_layer.py b/superset/daos/semantic_layer.py
new file mode 100644
index 00000000000..9c591e4a7a4
--- /dev/null
+++ b/superset/daos/semantic_layer.py
@@ -0,0 +1,152 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+"""DAOs for semantic layer models."""
+
+from __future__ import annotations
+
+from superset.daos.base import BaseDAO
+from superset.extensions import db
+from superset.semantic_layers.models import SemanticLayer, SemanticView
+
+
+class SemanticLayerDAO(BaseDAO[SemanticLayer]):
+    """
+    Data Access Object for SemanticLayer model.
+    """
+
+    @staticmethod
+    def validate_uniqueness(name: str) -> bool:
+        """
+        Validate that semantic layer name is unique.
+
+        :param name: Semantic layer name
+        :return: True if name is unique, False otherwise
+        """
+        query = db.session.query(SemanticLayer).filter(SemanticLayer.name == 
name)
+        return not db.session.query(query.exists()).scalar()
+
+    @staticmethod
+    def validate_update_uniqueness(layer_uuid: str, name: str) -> bool:
+        """
+        Validate that semantic layer name is unique for updates.
+
+        :param layer_uuid: UUID of the semantic layer being updated
+        :param name: New name to validate
+        :return: True if name is unique, False otherwise
+        """
+        query = db.session.query(SemanticLayer).filter(
+            SemanticLayer.name == name,
+            SemanticLayer.uuid != layer_uuid,
+        )
+        return not db.session.query(query.exists()).scalar()
+
+    @staticmethod
+    def find_by_name(name: str) -> SemanticLayer | None:
+        """
+        Find semantic layer by name.
+
+        :param name: Semantic layer name
+        :return: SemanticLayer instance or None
+        """
+        return (
+            db.session.query(SemanticLayer)
+            .filter(SemanticLayer.name == name)
+            .one_or_none()
+        )
+
+    @classmethod
+    def get_semantic_views(cls, layer_uuid: str) -> list[SemanticView]:
+        """
+        Get all semantic views for a semantic layer.
+
+        :param layer_uuid: UUID of the semantic layer
+        :return: List of SemanticView instances
+        """
+        return (
+            db.session.query(SemanticView)
+            .filter(SemanticView.semantic_layer_uuid == layer_uuid)
+            .all()
+        )
+
+
+class SemanticViewDAO(BaseDAO[SemanticView]):
+    """Data Access Object for SemanticView model."""
+
+    @staticmethod
+    def find_by_semantic_layer(layer_uuid: str) -> list[SemanticView]:
+        """
+        Find all views for a semantic layer.
+
+        :param layer_uuid: UUID of the semantic layer
+        :return: List of SemanticView instances
+        """
+        return (
+            db.session.query(SemanticView)
+            .filter(SemanticView.semantic_layer_uuid == layer_uuid)
+            .all()
+        )
+
+    @staticmethod
+    def validate_uniqueness(name: str, layer_uuid: str) -> bool:
+        """
+        Validate that view name is unique within semantic layer.
+
+        :param name: View name
+        :param layer_uuid: UUID of the semantic layer
+        :return: True if name is unique within layer, False otherwise
+        """
+        query = db.session.query(SemanticView).filter(
+            SemanticView.name == name,
+            SemanticView.semantic_layer_uuid == layer_uuid,
+        )
+        return not db.session.query(query.exists()).scalar()
+
+    @staticmethod
+    def validate_update_uniqueness(view_uuid: str, name: str, layer_uuid: str) 
-> bool:
+        """
+        Validate that view name is unique within semantic layer for updates.
+
+        :param view_uuid: UUID of the view being updated
+        :param name: New name to validate
+        :param layer_uuid: UUID of the semantic layer
+        :return: True if name is unique within layer, False otherwise
+        """
+        query = db.session.query(SemanticView).filter(
+            SemanticView.name == name,
+            SemanticView.semantic_layer_uuid == layer_uuid,
+            SemanticView.uuid != view_uuid,
+        )
+        return not db.session.query(query.exists()).scalar()
+
+    @staticmethod
+    def find_by_name(name: str, layer_uuid: str) -> SemanticView | None:
+        """
+        Find semantic view by name within a semantic layer.
+
+        :param name: View name
+        :param layer_uuid: UUID of the semantic layer
+        :return: SemanticView instance or None
+        """
+        return (
+            db.session.query(SemanticView)
+            .filter(
+                SemanticView.name == name,
+                SemanticView.semantic_layer_uuid == layer_uuid,
+            )
+            .one_or_none()
+        )
diff --git a/superset/explorables/base.py b/superset/explorables/base.py
index 2d534b72099..de69257a317 100644
--- a/superset/explorables/base.py
+++ b/superset/explorables/base.py
@@ -53,6 +53,130 @@ class TimeGrainDict(TypedDict):
     duration: str | None
 
 
+@runtime_checkable
+class MetricMetadata(Protocol):
+    """
+    Protocol for metric metadata objects.
+
+    Represents a metric that's available on an explorable data source.
+    Metrics contain SQL expressions or references to semantic layer measures.
+
+    Attributes:
+        metric_name: Unique identifier for the metric
+        expression: SQL expression or reference for calculating the metric
+        verbose_name: Human-readable name for display in the UI
+        description: Description of what the metric represents
+        d3format: D3 format string for formatting numeric values
+        currency: Currency configuration for the metric (JSON object)
+        warning_text: Warning message to display when using this metric
+        certified_by: Person or entity that certified this metric
+        certification_details: Details about the certification
+    """
+
+    @property
+    def metric_name(self) -> str:
+        """Unique identifier for the metric."""
+
+    @property
+    def expression(self) -> str:
+        """SQL expression or reference for calculating the metric."""
+
+    @property
+    def verbose_name(self) -> str | None:
+        """Human-readable name for display in the UI."""
+
+    @property
+    def description(self) -> str | None:
+        """Description of what the metric represents."""
+
+    @property
+    def d3format(self) -> str | None:
+        """D3 format string for formatting numeric values."""
+
+    @property
+    def currency(self) -> dict[str, Any] | None:
+        """Currency configuration for the metric (JSON object)."""
+
+    @property
+    def warning_text(self) -> str | None:
+        """Warning message to display when using this metric."""
+
+    @property
+    def certified_by(self) -> str | None:
+        """Person or entity that certified this metric."""
+
+    @property
+    def certification_details(self) -> str | None:
+        """Details about the certification."""
+
+
+@runtime_checkable
+class ColumnMetadata(Protocol):
+    """
+    Protocol for column metadata objects.
+
+    Represents a column/dimension that's available on an explorable data 
source.
+    Used for grouping, filtering, and dimension-based analysis.
+
+    Attributes:
+        column_name: Unique identifier for the column
+        type: SQL data type of the column (e.g., 'VARCHAR', 'INTEGER', 
'DATETIME')
+        is_dttm: Whether this column represents a date or time value
+        verbose_name: Human-readable name for display in the UI
+        description: Description of what the column represents
+        groupby: Whether this column is allowed for grouping/aggregation
+        filterable: Whether this column can be used in filters
+        expression: SQL expression if this is a calculated column
+        python_date_format: Python datetime format string for temporal columns
+        advanced_data_type: Advanced data type classification
+        extra: Additional metadata stored as JSON
+    """
+
+    @property
+    def column_name(self) -> str:
+        """Unique identifier for the column."""
+
+    @property
+    def type(self) -> str:
+        """SQL data type of the column."""
+
+    @property
+    def is_dttm(self) -> bool:
+        """Whether this column represents a date or time value."""
+
+    @property
+    def verbose_name(self) -> str | None:
+        """Human-readable name for display in the UI."""
+
+    @property
+    def description(self) -> str | None:
+        """Description of what the column represents."""
+
+    @property
+    def groupby(self) -> bool:
+        """Whether this column is allowed for grouping/aggregation."""
+
+    @property
+    def filterable(self) -> bool:
+        """Whether this column can be used in filters."""
+
+    @property
+    def expression(self) -> str | None:
+        """SQL expression if this is a calculated column."""
+
+    @property
+    def python_date_format(self) -> str | None:
+        """Python datetime format string for temporal columns."""
+
+    @property
+    def advanced_data_type(self) -> str | None:
+        """Advanced data type classification."""
+
+    @property
+    def extra(self) -> str | None:
+        """Additional metadata stored as JSON."""
+
+
 @runtime_checkable
 class Explorable(Protocol):
     """
@@ -132,7 +256,7 @@ class Explorable(Protocol):
         """
 
     @property
-    def metrics(self) -> list[Any]:
+    def metrics(self) -> list[MetricMetadata]:
         """
         List of metric metadata objects.
 
@@ -147,7 +271,7 @@ class Explorable(Protocol):
 
     # TODO: rename to dimensions
     @property
-    def columns(self) -> list[Any]:
+    def columns(self) -> list[ColumnMetadata]:
         """
         List of column metadata objects.
 
diff --git 
a/superset/migrations/versions/2025-11-04_11-26_33d7e0e21daa_add_semantic_layers_and_views.py
 
b/superset/migrations/versions/2025-11-04_11-26_33d7e0e21daa_add_semantic_layers_and_views.py
new file mode 100644
index 00000000000..1e3b42c5dc3
--- /dev/null
+++ 
b/superset/migrations/versions/2025-11-04_11-26_33d7e0e21daa_add_semantic_layers_and_views.py
@@ -0,0 +1,126 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+"""add_semantic_layers_and_views
+
+Revision ID: 33d7e0e21daa
+Revises: f5b5f88d8526
+Create Date: 2025-11-04 11:26:00.000000
+
+"""
+
+import uuid
+
+import sqlalchemy as sa
+from sqlalchemy_utils import UUIDType
+from sqlalchemy_utils.types.json import JSONType
+
+from superset.extensions import encrypted_field_factory
+from superset.migrations.shared.utils import (
+    create_fks_for_table,
+    create_table,
+    drop_table,
+)
+
+# revision identifiers, used by Alembic.
+revision = "33d7e0e21daa"
+down_revision = "f5b5f88d8526"
+
+
+def upgrade():
+    # Create semantic_layers table
+    create_table(
+        "semantic_layers",
+        sa.Column("uuid", UUIDType(binary=True), default=uuid.uuid4, 
nullable=False),
+        sa.Column("created_on", sa.DateTime(), nullable=True),
+        sa.Column("changed_on", sa.DateTime(), nullable=True),
+        sa.Column("name", sa.String(length=250), nullable=False),
+        sa.Column("description", sa.Text(), nullable=True),
+        sa.Column("type", sa.String(length=250), nullable=False),
+        sa.Column(
+            "configuration",
+            encrypted_field_factory.create(JSONType),
+            nullable=True,
+        ),
+        sa.Column("cache_timeout", sa.Integer(), nullable=True),
+        sa.Column("created_by_fk", sa.Integer(), nullable=True),
+        sa.Column("changed_by_fk", sa.Integer(), nullable=True),
+        sa.PrimaryKeyConstraint("uuid"),
+    )
+
+    # Create foreign key constraints for semantic_layers
+    create_fks_for_table(
+        "fk_semantic_layers_created_by_fk_ab_user",
+        "semantic_layers",
+        "ab_user",
+        ["created_by_fk"],
+        ["id"],
+    )
+
+    create_fks_for_table(
+        "fk_semantic_layers_changed_by_fk_ab_user",
+        "semantic_layers",
+        "ab_user",
+        ["changed_by_fk"],
+        ["id"],
+    )
+
+    # Create semantic_views table
+    create_table(
+        "semantic_views",
+        sa.Column("uuid", UUIDType(binary=True), default=uuid.uuid4, 
nullable=False),
+        sa.Column("created_on", sa.DateTime(), nullable=True),
+        sa.Column("changed_on", sa.DateTime(), nullable=True),
+        sa.Column("name", sa.String(length=250), nullable=False),
+        sa.Column("description", sa.Text(), nullable=True),
+        sa.Column(
+            "configuration",
+            encrypted_field_factory.create(JSONType),
+            nullable=True,
+        ),
+        sa.Column("cache_timeout", sa.Integer(), nullable=True),
+        sa.Column(
+            "semantic_layer_uuid",
+            UUIDType(binary=True),
+            sa.ForeignKey("semantic_layers.uuid", ondelete="CASCADE"),
+            nullable=False,
+        ),
+        sa.Column("created_by_fk", sa.Integer(), nullable=True),
+        sa.Column("changed_by_fk", sa.Integer(), nullable=True),
+        sa.PrimaryKeyConstraint("uuid"),
+    )
+
+    # Create foreign key constraints for semantic_views
+    create_fks_for_table(
+        "fk_semantic_views_created_by_fk_ab_user",
+        "semantic_views",
+        "ab_user",
+        ["created_by_fk"],
+        ["id"],
+    )
+
+    create_fks_for_table(
+        "fk_semantic_views_changed_by_fk_ab_user",
+        "semantic_views",
+        "ab_user",
+        ["changed_by_fk"],
+        ["id"],
+    )
+
+
+def downgrade():
+    drop_table("semantic_views")
+    drop_table("semantic_layers")
diff --git a/superset/models/sql_lab.py b/superset/models/sql_lab.py
index 956d33053bc..e7d8cecff20 100644
--- a/superset/models/sql_lab.py
+++ b/superset/models/sql_lab.py
@@ -22,7 +22,7 @@ import logging
 import re
 from collections.abc import Hashable
 from datetime import datetime
-from typing import Any, Optional, TYPE_CHECKING
+from typing import Any, cast, Optional, TYPE_CHECKING
 
 import sqlalchemy as sqla
 from flask import current_app as app
@@ -64,7 +64,7 @@ from superset.sql.parse import (
     Table,
 )
 from superset.sqllab.limiting_factor import LimitingFactor
-from superset.superset_typing import ExplorableData, QueryObjectDict
+from superset.superset_typing import DatasetColumnData, ExplorableData, 
QueryObjectDict
 from superset.utils import json
 from superset.utils.core import (
     get_column_name,
@@ -258,7 +258,7 @@ class Query(
             ],
             "filter_select": True,
             "name": self.tab_name,
-            "columns": [o.data for o in self.columns],
+            "columns": [cast(DatasetColumnData, o.data) for o in self.columns],
             "metrics": [],
             "id": self.id,
             "type": self.type,
diff --git a/superset/semantic_layers/models.py 
b/superset/semantic_layers/models.py
new file mode 100644
index 00000000000..4c4fda71b52
--- /dev/null
+++ b/superset/semantic_layers/models.py
@@ -0,0 +1,370 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+"""Semantic layer models."""
+
+from __future__ import annotations
+
+import uuid
+from collections.abc import Hashable
+from dataclasses import dataclass
+from functools import cached_property
+from typing import Any, TYPE_CHECKING
+
+from flask_appbuilder import Model
+from sqlalchemy import Column, ForeignKey, Integer, String, Text
+from sqlalchemy.orm import relationship
+from sqlalchemy_utils import UUIDType
+from sqlalchemy_utils.types.json import JSONType
+from superset_core.semantic_layers.mapper import get_results
+from superset_core.semantic_layers.semantic_layer import (
+    SemanticLayer as SemanticLayerProtocol,
+)
+from superset_core.semantic_layers.semantic_view import (
+    SemanticView as SemanticViewProtocol,
+)
+from superset_core.semantic_layers.types import (
+    BINARY,
+    BOOLEAN,
+    DATE,
+    DATETIME,
+    DECIMAL,
+    INTEGER,
+    INTERVAL,
+    NUMBER,
+    OBJECT,
+    STRING,
+    TIME,
+    Type,
+)
+
+from superset.common.query_object import QueryObject
+from superset.explorables.base import TimeGrainDict
+from superset.extensions import encrypted_field_factory
+from superset.models.helpers import AuditMixinNullable, QueryResult
+from superset.utils import json
+from superset.utils.core import GenericDataType
+
+if TYPE_CHECKING:
+    from superset.superset_typing import ExplorableData, QueryObjectDict
+
+
+def get_column_type(semantic_type: type[Type]) -> GenericDataType:
+    """
+    Map semantic layer types to generic data types.
+    """
+    if semantic_type in {DATE, DATETIME, TIME}:
+        return GenericDataType.TEMPORAL
+    if semantic_type in {INTEGER, NUMBER, DECIMAL, INTERVAL}:
+        return GenericDataType.NUMERIC
+    if semantic_type is BOOLEAN:
+        return GenericDataType.BOOLEAN
+    if semantic_type in {STRING, OBJECT, BINARY}:
+        return GenericDataType.STRING
+    return GenericDataType.STRING
+
+
+@dataclass(frozen=True)
+class MetricMetadata:
+    metric_name: str
+    expression: str
+    verbose_name: str | None = None
+    description: str | None = None
+    d3format: str | None = None
+    currency: dict[str, Any] | None = None
+    warning_text: str | None = None
+    certified_by: str | None = None
+    certification_details: str | None = None
+
+
+@dataclass(frozen=True)
+class ColumnMetadata:
+    column_name: str
+    type: str
+    is_dttm: bool
+    verbose_name: str | None = None
+    description: str | None = None
+    groupby: bool = True
+    filterable: bool = True
+    expression: str | None = None
+    python_date_format: str | None = None
+    advanced_data_type: str | None = None
+    extra: str | None = None
+
+
+class SemanticLayer(AuditMixinNullable, Model):
+    """
+    Semantic layer model.
+
+    A semantic layer provides an abstraction over data sources,
+    allowing users to query data through a semantic interface.
+    """
+
+    __tablename__ = "semantic_layers"
+
+    uuid = Column(UUIDType(binary=True), primary_key=True, default=uuid.uuid4)
+
+    # Core fields
+    name = Column(String(250), nullable=False)
+    description = Column(Text, nullable=True)
+    type = Column(String(250), nullable=False)  # snowflake, etc
+
+    configuration = Column(encrypted_field_factory.create(JSONType), 
default=dict)
+    cache_timeout = Column(Integer, nullable=True)
+
+    # Semantic views relationship
+    semantic_views: list[SemanticView] = relationship(
+        "SemanticView",
+        back_populates="semantic_layer",
+        cascade="all, delete-orphan",
+        passive_deletes=True,
+    )
+
+    def __repr__(self) -> str:
+        return self.name or str(self.uuid)
+
+    @cached_property
+    def implementation(
+        self,
+    ) -> SemanticLayerProtocol[Any, SemanticViewProtocol]:
+        """
+        Return semantic layer implementation.
+        """
+        # TODO (betodealmeida):
+        # return extension_manager.get_contribution("semanticLayers", 
self.type)
+        raise NotImplementedError()
+
+
+class SemanticView(AuditMixinNullable, Model):
+    """
+    Semantic view model.
+
+    A semantic view represents a queryable view within a semantic layer.
+    """
+
+    __tablename__ = "semantic_views"
+
+    uuid = Column(UUIDType(binary=True), primary_key=True, default=uuid.uuid4)
+
+    # Core fields
+    name = Column(String(250), nullable=False)
+    description = Column(Text, nullable=True)
+
+    configuration = Column(encrypted_field_factory.create(JSONType), 
default=dict)
+    cache_timeout = Column(Integer, nullable=True)
+
+    # Semantic layer relationship
+    semantic_layer_uuid = Column(
+        UUIDType(binary=True),
+        ForeignKey("semantic_layers.uuid", ondelete="CASCADE"),
+        nullable=False,
+    )
+    semantic_layer: SemanticLayer = relationship(
+        "SemanticLayer",
+        back_populates="semantic_views",
+        foreign_keys=[semantic_layer_uuid],
+    )
+
+    def __repr__(self) -> str:
+        return self.name or str(self.uuid)
+
+    @cached_property
+    def implementation(self) -> SemanticViewProtocol:
+        """
+        Return semantic view implementation.
+        """
+        return self.semantic_layer.implementation.get_semantic_view(
+            self.name,
+            json.loads(self.configuration),
+        )
+
+    # =========================================================================
+    # Explorable protocol implementation
+    # =========================================================================
+
+    def get_query_result(self, query_object: QueryObject) -> QueryResult:
+        return get_results(query_object)
+
+    def get_query_str(self, query_obj: QueryObjectDict) -> str:
+        return "Not implemented for semantic layers"
+
+    @property
+    def uid(self) -> str:
+        return self.implementation.uid()
+
+    @property
+    def type(self) -> str:
+        return "semantic_view"
+
+    @property
+    def metrics(self) -> list[MetricMetadata]:
+        return [
+            MetricMetadata(
+                metric_name=metric.name,
+                expression=metric.definition,
+                description=metric.description,
+            )
+            for metric in self.implementation.get_metrics()
+        ]
+
+    @property
+    def columns(self) -> list[ColumnMetadata]:
+        return [
+            ColumnMetadata(
+                column_name=dimension.name,
+                type=dimension.type.__name__,
+                is_dttm=dimension.type in {DATE, TIME, DATETIME},
+                description=dimension.description,
+                expression=dimension.definition,
+                extra=json.dumps({"grain": dimension.grain}),
+            )
+            for dimension in self.implementation.get_dimensions()
+        ]
+
+    @property
+    def column_names(self) -> list[str]:
+        return [dimension.name for dimension in 
self.implementation.get_dimensions()]
+
+    @property
+    def data(self) -> ExplorableData:
+        return {
+            # core
+            "id": self.uuid.hex,
+            "uid": self.uid,
+            "type": "semantic_view",
+            "name": self.name,
+            "columns": [
+                {
+                    "advanced_data_type": None,
+                    "certification_details": None,
+                    "certified_by": None,
+                    "column_name": dimension.name,
+                    "description": dimension.description,
+                    "expression": dimension.definition,
+                    "filterable": True,
+                    "groupby": True,
+                    "id": None,
+                    "uuid": None,
+                    "is_certified": False,
+                    "is_dttm": dimension.type in {DATE, TIME, DATETIME},
+                    "python_date_format": None,
+                    "type": dimension.type.__name__,
+                    "type_generic": get_column_type(dimension.type),
+                    "verbose_name": None,
+                    "warning_markdown": None,
+                }
+                for dimension in self.implementation.get_dimensions()
+            ],
+            "metrics": [
+                {
+                    "certification_details": None,
+                    "certified_by": None,
+                    "d3format": None,
+                    "description": metric.description,
+                    "expression": metric.definition,
+                    "id": None,
+                    "uuid": None,
+                    "is_certified": False,
+                    "metric_name": metric.name,
+                    "warning_markdown": None,
+                    "warning_text": None,
+                    "verbose_name": None,
+                }
+                for metric in self.implementation.get_metrics()
+            ],
+            "database": {},
+            # UI features
+            "verbose_map": {},
+            "order_by_choices": [],
+            "filter_select": True,
+            "filter_select_enabled": True,
+            "sql": None,
+            "select_star": None,
+            "owners": [],
+            "description": self.description,
+            "table_name": self.name,
+            "column_types": [
+                get_column_type(dimension.type)
+                for dimension in self.implementation.get_dimensions()
+            ],
+            "column_names": {
+                dimension.name for dimension in 
self.implementation.get_dimensions()
+            },
+            # rare
+            "column_formats": {},
+            "datasource_name": self.name,
+            "perm": self.perm,
+            "offset": self.offset,
+            "cache_timeout": self.cache_timeout,
+            "params": None,
+            # sql-specific
+            "schema": None,
+            "catalog": None,
+            "main_dttm_col": None,
+            "time_grain_sqla": [],
+            "granularity_sqla": [],
+            "fetch_values_predicate": None,
+            "template_params": None,
+            "is_sqllab_view": False,
+            "extra": None,
+            "always_filter_main_dttm": False,
+            "normalize_columns": False,
+            # TODO XXX
+            # "owners": [owner.id for owner in self.owners],
+            "edit_url": "",
+            "default_endpoint": None,
+            "folders": [],
+            "health_check_message": None,
+        }
+
+    def get_extra_cache_keys(self, query_obj: QueryObjectDict) -> 
list[Hashable]:
+        return []
+
+    @property
+    def perm(self) -> str:
+        return self.semantic_layer_uuid.hex + "::" + self.uuid.hex
+
+    @property
+    def offset(self) -> int:
+        # always return datetime as UTC
+        return 0
+
+    @property
+    def get_time_grains(self) -> list[TimeGrainDict]:
+        return [
+            {
+                "name": dimension.grain.name,
+                "function": "",
+                "duration": dimension.grain.representation,
+            }
+            for dimension in self.implementation.get_dimensions()
+            if dimension.grain
+        ]
+
+    def has_drill_by_columns(self, column_names: list[str]) -> bool:
+        dimension_names = {
+            dimension.name for dimension in 
self.implementation.get_dimensions()
+        }
+        return all(column_name in dimension_names for column_name in 
column_names)
+
+    @property
+    def is_rls_supported(self) -> bool:
+        return False
+
+    @property
+    def query_language(self) -> str | None:
+        return None
diff --git a/superset/superset_typing.py b/superset/superset_typing.py
index 02e294a08cf..ef002ac86ba 100644
--- a/superset/superset_typing.py
+++ b/superset/superset_typing.py
@@ -30,6 +30,46 @@ if TYPE_CHECKING:
 SQLType: TypeAlias = TypeEngine | type[TypeEngine]
 
 
+class DatasetColumnData(TypedDict, total=False):
+    """Type for column metadata in ExplorableData datasets."""
+
+    advanced_data_type: str | None
+    certification_details: str | None
+    certified_by: str | None
+    column_name: str
+    description: str | None
+    expression: str | None
+    filterable: bool
+    groupby: bool
+    id: int | None
+    uuid: str | None
+    is_certified: bool
+    is_dttm: bool
+    python_date_format: str | None
+    type: str
+    type_generic: NotRequired["GenericDataType" | None]
+    verbose_name: str | None
+    warning_markdown: str | None
+
+
+class DatasetMetricData(TypedDict, total=False):
+    """Type for metric metadata in ExplorableData datasets."""
+
+    certification_details: str | None
+    certified_by: str | None
+    currency: NotRequired[dict[str, Any]]
+    d3format: str | None
+    description: str | None
+    expression: str | None
+    id: int | None
+    uuid: str | None
+    is_certified: bool
+    metric_name: str
+    warning_markdown: str | None
+    warning_text: str | None
+    verbose_name: str | None
+
+
 class LegacyMetric(TypedDict):
     label: str | None
 
@@ -254,7 +294,7 @@ class ExplorableData(TypedDict, total=False):
     """
 
     # Core fields from BaseDatasource.data
-    id: int
+    id: int | str  # String for UUID-based explorables like SemanticView
     uid: str
     column_formats: dict[str, str | None]
     description: str | None
@@ -274,8 +314,8 @@ class ExplorableData(TypedDict, total=False):
     perm: str | None
     edit_url: str
     sql: str | None
-    columns: list[dict[str, Any]]
-    metrics: list[dict[str, Any]]
+    columns: list["DatasetColumnData"]
+    metrics: list["DatasetMetricData"]
     folders: Any  # JSON field, can be list or dict
     order_by_choices: list[tuple[str, str]]
     owners: list[int] | list[dict[str, Any]]  # Can be either format
@@ -283,8 +323,8 @@ class ExplorableData(TypedDict, total=False):
     select_star: str | None
 
     # Additional fields from SqlaTable and data_for_slices
-    column_types: list[Any]
-    column_names: set[str] | set[Any]
+    column_types: list["GenericDataType"]
+    column_names: set[str] | list[str]
     granularity_sqla: list[tuple[Any, Any]]
     time_grain_sqla: list[tuple[Any, Any]]
     main_dttm_col: str | None
diff --git a/superset/utils/core.py b/superset/utils/core.py
index 23a3017bf2c..795be29be69 100644
--- a/superset/utils/core.py
+++ b/superset/utils/core.py
@@ -96,7 +96,6 @@ from superset.exceptions import (
     SupersetException,
     SupersetTimeoutException,
 )
-from superset.explorables.base import Explorable
 from superset.sql.parse import sanitize_clause
 from superset.superset_typing import (
     AdhocColumn,
@@ -115,7 +114,7 @@ from superset.utils.hashing import hash_from_dict, 
hash_from_str
 from superset.utils.pandas import detect_datetime_format
 
 if TYPE_CHECKING:
-    from superset.connectors.sqla.models import TableColumn
+    from superset.explorables.base import ColumnMetadata, Explorable
     from superset.models.core import Database
 
 logging.getLogger("MARKDOWN").setLevel(logging.INFO)
@@ -200,6 +199,7 @@ class DatasourceType(StrEnum):
     QUERY = "query"
     SAVEDQUERY = "saved_query"
     VIEW = "view"
+    SEMANTIC_VIEW = "semantic_view"
 
 
 class LoggerLevel(StrEnum):
@@ -1730,15 +1730,12 @@ def get_metric_type_from_column(column: Any, 
datasource: Explorable) -> str:
     :return: The inferred metric type as a string, or an empty string if the
              column is not a metric or no valid operation is found.
     """
-
-    from superset.connectors.sqla.models import SqlMetric
-
-    metric: SqlMetric = next(
-        (metric for metric in datasource.metrics if metric.metric_name == 
column),
-        SqlMetric(metric_name=""),
+    metric = next(
+        (m for m in datasource.metrics if m.metric_name == column),
+        None,
     )
 
-    if metric.metric_name == "":
+    if metric is None:
         return ""
 
     expression: str = metric.expression
@@ -1784,7 +1781,7 @@ def extract_dataframe_dtypes(
 
     generic_types: list[GenericDataType] = []
     for column in df.columns:
-        column_object = columns_by_name.get(column)
+        column_object = columns_by_name.get(str(column))
         series = df[column]
         inferred_type: str = ""
         if series.isna().all():
@@ -1814,11 +1811,17 @@ def extract_dataframe_dtypes(
     return generic_types
 
 
-def extract_column_dtype(col: TableColumn) -> GenericDataType:
-    if col.is_temporal:
+def extract_column_dtype(col: ColumnMetadata) -> GenericDataType:
+    # Check for temporal type
+    if hasattr(col, "is_temporal") and col.is_temporal:
+        return GenericDataType.TEMPORAL
+    if col.is_dttm:
         return GenericDataType.TEMPORAL
-    if col.is_numeric:
+
+    # Check for numeric type
+    if hasattr(col, "is_numeric") and col.is_numeric:
         return GenericDataType.NUMERIC
+
     # TODO: add check for boolean data type when proper support is added
     return GenericDataType.STRING
 
@@ -1832,9 +1835,7 @@ def get_time_filter_status(
     applied_time_extras: dict[str, str],
 ) -> tuple[list[dict[str, str]], list[dict[str, str]]]:
     temporal_columns: set[Any] = {
-        (col.column_name if hasattr(col, "column_name") else 
col.get("column_name"))
-        for col in datasource.columns
-        if (col.is_dttm if hasattr(col, "is_dttm") else col.get("is_dttm"))
+        col.column_name for col in datasource.columns if col.is_dttm
     }
     applied: list[dict[str, str]] = []
     rejected: list[dict[str, str]] = []
diff --git a/tests/integration_tests/charts/api_tests.py 
b/tests/integration_tests/charts/api_tests.py
index b8b60355419..ea35b176449 100644
--- a/tests/integration_tests/charts/api_tests.py
+++ b/tests/integration_tests/charts/api_tests.py
@@ -626,7 +626,8 @@ class TestChartApi(ApiOwnersTestCaseMixin, 
InsertChartMixin, SupersetTestCase):
         assert response == {
             "message": {
                 "datasource_type": [
-                    "Must be one of: table, dataset, query, saved_query, view."
+                    "Must be one of: table, dataset, query, saved_query, view, 
"
+                    "semantic_view."
                 ]
             }
         }
@@ -981,7 +982,8 @@ class TestChartApi(ApiOwnersTestCaseMixin, 
InsertChartMixin, SupersetTestCase):
         assert response == {
             "message": {
                 "datasource_type": [
-                    "Must be one of: table, dataset, query, saved_query, view."
+                    "Must be one of: table, dataset, query, saved_query, view, 
"
+                    "semantic_view."
                 ]
             }
         }


Reply via email to