Package org.apache.drill.exec.record

Class SchemaBuilder

java.lang.Object

org.apache.drill.exec.record.SchemaBuilder

public class SchemaBuilder
extends Object

A reusable builder that supports the creation of BatchSchemas. Can have a supporting expected object. If the expected Schema object is defined, the builder will always check that this schema is a equal or more materialized version of the current schema.

Method Summary

Modifier and Type	Method	Description
SchemaBuilder	addField(MaterializedField f)
SchemaBuilder	addFields(Iterable<MaterializedField> fields)
SchemaBuilder	addSerializedFields(Iterable<UserBitShared.SerializedField> fields)
BatchSchema	build()	Generate a new BatchSchema object based on the current state of the builder.
SchemaBuilder	removeField(MaterializedField f)
SchemaBuilder	setSelectionVectorMode(BatchSchema.SelectionVectorMode selectionVectorMode)

Methods inherited from class java.lang.Object

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

Method Details

setSelectionVectorMode

public SchemaBuilder setSelectionVectorMode(BatchSchema.SelectionVectorMode selectionVectorMode)

addFields

public SchemaBuilder addFields(Iterable<MaterializedField> fields)

addSerializedFields

public SchemaBuilder addSerializedFields(Iterable<UserBitShared.SerializedField> fields)

addField

public SchemaBuilder addField(MaterializedField f)

removeField

public SchemaBuilder removeField(MaterializedField f)
                          throws SchemaChangeException

Throws:

SchemaChangeException

build

public BatchSchema build()

Generate a new BatchSchema object based on the current state of the builder.

Returns:

Throws:

SchemaChangeException