> For the complete documentation index, see [llms.txt](https://trillo.gitbook.io/trillo-workbench-python-sdk/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://trillo.gitbook.io/trillo-workbench-python-sdk/meta-api-metaapi/retrieve-apis.md).

# All Retrieve-Only

## getAppDataDir

Locate and get the application data directory 

```
MetaApi.getAppDataDir()
```

**Parameters**

```
no parameters.
```

**Returns**

```
The application data directory.
```

## getClassM

Get the object representing the class​

```
MetaApi.getClassM(className)
```

Parameters

```
className: name of the class (string)
```

Returns

```
Class metadata.
```

## getSchemaForDataStudio

Get class schema​ for the data studio

```
MetaApi.getSchemaForDataStudio(className, includeAllSysAttrs)
```

**Parameters**

```
className:          name of the class (string)
includeAllSysAttrs:  include all system attributes (bool)
```

**Returns**

```
List of dictionaries containing schema details.
```

## getDomainFileAsMap

get domain file as a hashmap.​

```
MetaApi.getDomainFileAsMap(fileName)
```

**Parameters**

```
fileName:    name of the file (string)
```

**Returns**

```
Content of the domain file as a dictionary.
```

## getMetadata

Get metadata based on the ID.

```
MetaApi.getMetadata(id)
or
MetaApi.getMetadata(modelClassName, folder, name) 
```

**Parameters**

```
id (string)
modelClassName (string)
folder (string)
name (string)
```

**Returns**

```
Metadata details.
```

## getClasses

Get classes based on the provided filter.

```
MetaApi.getClasses(filter)
or
MetaApi.getClasses(dsName, filter)
or
MetaApi.getClasses(dsName, schemaName, filter)
or
MetaApi.getClasses(appName, dsName, schemaName, filter)
```

**Parameters**

```
filter (string)
dsName (string)
schemaName (string)
appName (string)
```

**Returns**

```
List of classes.
```

## getClassNames

Get class names based on the provided filter.

```
MetaApi.getClassNames(filter)
or
MetaApi.getClassNames(dsName, filter)
or
MetaApi.getClassNames(dsName, schemaName, filter)
or
MetaApi. getClassNames(appName, dsName, schemaName, filter)
```

**Parameters**

```
filter (string)
dsName (string)
schemaName (string)
appName (string)
```

**Returns**

```
List of class names.
```

## getDataSourceNames

Get data source names based on the provided filter.

```
MetaApi.getDataSourceNames(filter)
or
MetaApi.getDataSourceNames(appName, filter)
```

**Parameters**

```
filter (string)
appName (string)
```

**Returns**

```
List of data source names.
```

## getDataSources

Get data sources based on the provided filter.

```
MetaApi.getDataSources(filter)
or
MetaApi.getDataSources(appName, filter)
```

**Parameters**

```
filter (string)
appName (string)
```

**Returns**

```
List of data sources.
```