Package org.apache.avro.util

Interface SchemaVisitor<T>

All Known Implementing Classes:

SchemaResolver.IsResolvedSchemaVisitor, SchemaResolver.ResolvingVisitor

public interface SchemaVisitor<T>

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static enum	SchemaVisitor.SchemaVisitorAction

Method Summary

Modifier and Type	Method	Description
SchemaVisitor.SchemaVisitorAction	afterVisitNonTerminal(Schema nonTerminal)	Invoked for schemas with children after its children have been visited.
T	get()	Invoked when visiting is complete.
SchemaVisitor.SchemaVisitorAction	visitNonTerminal(Schema nonTerminal)	Invoked for schema with children before proceeding to visit the children.
SchemaVisitor.SchemaVisitorAction	visitTerminal(Schema terminal)	Invoked for schemas that do not have "child" schemas (like string, int …) or for a previously encountered schema with children, which will be treated as a terminal.

Method Details

visitTerminal

SchemaVisitor.SchemaVisitorAction visitTerminal(Schema terminal)

Invoked for schemas that do not have "child" schemas (like string, int …) or for a previously encountered schema with children, which will be treated as a terminal. (to avoid circular recursion)

visitNonTerminal

SchemaVisitor.SchemaVisitorAction visitNonTerminal(Schema nonTerminal)

Invoked for schema with children before proceeding to visit the children.

afterVisitNonTerminal

SchemaVisitor.SchemaVisitorAction afterVisitNonTerminal(Schema nonTerminal)

Invoked for schemas with children after its children have been visited.

get

T get()

Invoked when visiting is complete.

Returns:

a value that will be returned by the visit method.