org.apache.hadoop.hive.ql.parse
Class MetaDataExportListener

java.lang.Object
  org.apache.hadoop.hive.metastore.MetaStorePreEventListener
      org.apache.hadoop.hive.ql.parse.MetaDataExportListener

All Implemented Interfaces:

org.apache.hadoop.conf.Configurable

public class MetaDataExportListener
extends MetaStorePreEventListener

This class listens for drop events and, if set, exports the table's metadata as JSON to the trash of the user performing the drop

Field Summary

static org.apache.commons.logging.Log

LOG

Constructor Summary

MetaDataExportListener(org.apache.hadoop.conf.Configuration config)
Configure the export listener

Method Summary

void	onEvent(PreEventContext context) Listen for an event; if it is a DROP_TABLE event, call export_meta_data

Methods inherited from class org.apache.hadoop.hive.metastore.MetaStorePreEventListener

getConf, setConf

Methods inherited from class java.lang.Object

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

Field Detail

LOG

public static final org.apache.commons.logging.Log LOG

Constructor Detail

MetaDataExportListener

public MetaDataExportListener(org.apache.hadoop.conf.Configuration config)

Configure the export listener

Method Detail

onEvent

public void onEvent(PreEventContext context)
             throws org.apache.hadoop.hive.metastore.api.MetaException,
                    org.apache.hadoop.hive.metastore.api.NoSuchObjectException,
                    org.apache.hadoop.hive.metastore.api.InvalidOperationException

Listen for an event; if it is a DROP_TABLE event, call export_meta_data

Specified by:

onEvent in class MetaStorePreEventListener

Throws:

org.apache.hadoop.hive.metastore.api.MetaException

org.apache.hadoop.hive.metastore.api.NoSuchObjectException

org.apache.hadoop.hive.metastore.api.InvalidOperationException