SchemaProvider (core 2.44.0 API)

All Superinterfaces:

java.io.Serializable

All Known Implementing Classes:

AutoValueSchema, AvroRecordSchema, DefaultSchema.DefaultSchemaProvider, GetterBasedSchemaProvider, JavaBeanSchema, JavaFieldSchema
```
@Experimental(SCHEMAS)
public interface SchemaProvider
extends java.io.Serializable
```
Concrete implementations of this class allow creation of schema service objects that vend a Schema for a specific type. One example use: creating a SchemaProvider that contacts an external schema-registry service to determine the schema for a type.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`<T> @Nullable SerializableFunction<Row,T>`	`fromRowFunction(TypeDescriptor<T> typeDescriptor)`	Given a type, returns a function that converts from a `Row` object to that type.
`<T> @Nullable Schema`	`schemaFor(TypeDescriptor<T> typeDescriptor)`	Lookup a schema for the given type.
`<T> @Nullable SerializableFunction<T,Row>`	`toRowFunction(TypeDescriptor<T> typeDescriptor)`	Given a type, return a function that converts that type to a `Row` object If no schema exists, returns null.

- Method Detail
  - schemaFor
```
<T> @Nullable Schema schemaFor(TypeDescriptor<T> typeDescriptor)
```
    Lookup a schema for the given type. If no schema exists, returns null.
  - toRowFunction
```
<T> @Nullable SerializableFunction<T,Row> toRowFunction(TypeDescriptor<T> typeDescriptor)
```
    Given a type, return a function that converts that type to a Row object If no schema exists, returns null.
  - fromRowFunction
```
<T> @Nullable SerializableFunction<Row,T> fromRowFunction(TypeDescriptor<T> typeDescriptor)
```
    Given a type, returns a function that converts from a Row object to that type. If no schema exists, returns null.