mirror of
https://github.com/hwchase17/langchain.git
synced 2025-06-05 06:33:20 +00:00
bf5193bb99
Upgrade to using a literal for specifying the extra which is the
recommended approach in pydantic 2.
This works correctly also in pydantic v1.
```python
from pydantic.v1 import BaseModel
class Foo(BaseModel, extra="forbid"):
x: int
Foo(x=5, y=1)
```
And
```python
from pydantic.v1 import BaseModel
class Foo(BaseModel):
x: int
class Config:
extra = "forbid"
Foo(x=5, y=1)
```
## Enum -> literal using grit pattern:
```
engine marzano(0.1)
language python
or {
`extra=Extra.allow` => `extra="allow"`,
`extra=Extra.forbid` => `extra="forbid"`,
`extra=Extra.ignore` => `extra="ignore"`
}
```
Resorted attributes in config and removed doc-string in case we will
need to deal with going back and forth between pydantic v1 and v2 during
the 0.3 release. (This will reduce merge conflicts.)
## Sort attributes in Config:
```
engine marzano(0.1)
language python
function sort($values) js {
return $values.text.split(',').sort().join("\n");
}
class_definition($name, $body) as $C where {
$name <: `Config`,
$body <: block($statements),
$values = [],
$statements <: some bubble($values) assignment() as $A where {
$values += $A
},
$body => sort($values),
}
```
37 lines
1.1 KiB
Python
37 lines
1.1 KiB
Python
"""Apache Cassandra Toolkit."""
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from typing import List
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from langchain_core.pydantic_v1 import Field
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from langchain_community.agent_toolkits.base import BaseToolkit
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from langchain_community.tools import BaseTool
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from langchain_community.tools.cassandra_database.tool import (
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GetSchemaCassandraDatabaseTool,
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GetTableDataCassandraDatabaseTool,
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QueryCassandraDatabaseTool,
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)
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from langchain_community.utilities.cassandra_database import CassandraDatabase
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class CassandraDatabaseToolkit(BaseToolkit):
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"""Toolkit for interacting with an Apache Cassandra database.
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Parameters:
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db: CassandraDatabase. The Cassandra database to interact
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with.
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"""
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db: CassandraDatabase = Field(exclude=True)
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class Config:
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arbitrary_types_allowed = True
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def get_tools(self) -> List[BaseTool]:
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"""Get the tools in the toolkit."""
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return [
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GetSchemaCassandraDatabaseTool(db=self.db),
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QueryCassandraDatabaseTool(db=self.db),
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GetTableDataCassandraDatabaseTool(db=self.db),
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]
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