Package org.apache.drill.exec.record.metadata.schema

Class InlineSchemaProvider

java.lang.Object

org.apache.drill.exec.record.metadata.schema.InlineSchemaProvider

All Implemented Interfaces:

SchemaProvider

public class InlineSchemaProvider
extends Object
implements SchemaProvider

Is used to provide schema when passed using table function.

Field Summary

Fields inherited from interface org.apache.drill.exec.record.metadata.schema.SchemaProvider

DEFAULT_SCHEMA_NAME

Constructor Summary

Constructors

Constructor	Description
InlineSchemaProvider(String schema)

Method Summary

Modifier and Type	Method	Description
void	delete()	Deletes schema.
boolean	exists()	Checks if schema exists.
SchemaContainer	read()	Reads schema into SchemaContainer.
void	store(String schema, Map<String,String> properties, StorageProperties storageProperties)	Stores given schema definition and properties.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

InlineSchemaProvider

public InlineSchemaProvider(String schema)

Method Details

delete

public void delete()

Description copied from interface: SchemaProvider

Deletes schema.

Specified by:

delete in interface SchemaProvider

store

public void store(String schema,
 Map<String,String> properties,
 StorageProperties storageProperties)

Description copied from interface: SchemaProvider

Stores given schema definition and properties.

Specified by:

store in interface SchemaProvider

Parameters:

schema - schema definition

properties - map of properties

storageProperties - storage properties

read

public SchemaContainer read()
                     throws IOException

Description copied from interface: SchemaProvider

Reads schema into SchemaContainer. Depending on implementation, can read from a file or from the given input.

Specified by:

read in interface SchemaProvider

Returns:

table schema instance

Throws:

IOException

exists

public boolean exists()

Description copied from interface: SchemaProvider

Checks if schema exists.

Specified by:

exists in interface SchemaProvider

Returns:

true if schema exists, false otherwise