bdglue2.utility.schemadef

Class FormatHiveAvro

java.lang.Object

bdglue2.utility.schemadef.Format

bdglue2.utility.schemadef.FormatHiveAvro

public class FormatHiveAvro
extends Format

Format the Hive schema meta data based on the assumption that we will be storing data in HDFS as Avro files. It formats the proper syntax to leverage the Hive Avro SerDe that handles mapping this data as external tables.

Constructor Summary

Constructors

Constructor and Description
FormatHiveAvro()

Method Summary

Modifier and Type	Method and Description
void	bottom(String table) Format the bottom of the schema.
void	init() Reset so we can use this again.
void	top(String schema, String table, boolean noDoc) Format the top portion of the Hive schema file.
void	writeField(ColumnInfo column, boolean writeDefault) Format the "middle" of the schema.

Methods inherited from class bdglue2.utility.schemadef.Format

baos, getBuffer, getProperties, setFileName, setFileSuffix, validateDirectory, writFile

Methods inherited from class java.lang.Object

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

Constructor Detail

FormatHiveAvro

public FormatHiveAvro()

Method Detail

init

public void init()

Reset so we can use this again.

top

public void top(String schema,
                String table,
                boolean noDoc)
         throws IOException

Format the top portion of the Hive schema file.

Specified by:

top in class Format

Parameters:

schema - the name of the schema

table - the name of the table

noDoc - unused. Specific to avro.

Throws:

IOException - if an IO error occurs

bottom

public void bottom(String table)

Format the bottom of the schema. In this case, nothing occurs in this method because there is no "middle" either.

Specified by:

bottom in class Format

Parameters:

table - the table name

writeField

public void writeField(ColumnInfo column,
                       boolean writeDefault)

Format the "middle" of the schema. In this case, there is no middle as individual fields are not represented in the schema.

Specified by:

writeField in class Format

Parameters:

column - the name of the column

writeDefault - whether or not to include default values