org.apache.pig.piggybank.storage
Class PigStorageSchema

java.lang.Object
  org.apache.pig.LoadFunc
      org.apache.pig.FileInputLoadFunc
          org.apache.pig.builtin.PigStorage
              org.apache.pig.piggybank.storage.PigStorageSchema

All Implemented Interfaces:

LoadMetadata, LoadPushDown, OrderedLoadFunc, OverwritableStoreFunc, StoreFuncInterface, StoreMetadata

Deprecated. Use PigStorage with a -schema option instead

@Deprecated
public class PigStorageSchema
extends PigStorage
implements LoadMetadata, StoreMetadata

This Load/Store Func reads/writes metafiles that allow the schema and aliases to be determined at load time, saving one from having to manually enter schemas for pig-generated datasets. It also creates a ".pig_headers" file that simply lists the delimited aliases. This is intended to make export to tools that can read files with header lines easier (just cat the header to your data).

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.pig.LoadPushDown

LoadPushDown.OperatorSet, LoadPushDown.RequiredField, LoadPushDown.RequiredFieldList, LoadPushDown.RequiredFieldResponse

Field Summary

Fields inherited from class org.apache.pig.builtin.PigStorage

caster, in, mLog, mRequiredColumns, schema, signature, writer

Constructor Summary

PigStorageSchema()
Deprecated.

PigStorageSchema(String delim)
Deprecated.

Method Summary

Methods inherited from class org.apache.pig.builtin.PigStorage

checkSchema, cleanupOnFailure, cleanupOnSuccess, cleanupOutput, equals, equals, getFeatures, getInputFormat, getNext, getOutputFormat, getPartitionKeys, getSchema, getStatistics, hashCode, prepareToRead, prepareToWrite, pushProjection, putNext, readField, relToAbsPathForStoreLocation, setLocation, setPartitionFilter, setStoreFuncUDFContextSignature, setStoreLocation, setUDFContextSignature, shouldOverwrite, storeSchema, storeStatistics

Methods inherited from class org.apache.pig.FileInputLoadFunc

getSplitComparable

Methods inherited from class org.apache.pig.LoadFunc

getAbsolutePath, getLoadCaster, getPathStrings, join, relativeToAbsolutePath, warn

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.pig.LoadMetadata

getPartitionKeys, getSchema, getStatistics, setPartitionFilter

Methods inherited from interface org.apache.pig.StoreMetadata

storeSchema, storeStatistics

Constructor Detail

PigStorageSchema

public PigStorageSchema()

Deprecated.

PigStorageSchema

public PigStorageSchema(String delim)

Deprecated.