org.apache.hadoop.hive.ql.parse.rewrite

Class MergeRewriter

java.lang.Object

org.apache.hadoop.hive.ql.parse.rewrite.MergeRewriter

All Implemented Interfaces:

MergeStatement.DestClausePrefixSetter, Rewriter<MergeStatement>

Direct Known Subclasses:

CopyOnWriteMergeRewriter, SplitMergeRewriter

public class MergeRewriter
extends Object
implements Rewriter<MergeStatement>, MergeStatement.DestClausePrefixSetter

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	MergeRewriter.MergeWhenClauseSqlGenerator

Field Summary

Fields

Modifier and Type	Field and Description
protected HiveConf	conf
protected SqlGeneratorFactory	sqlGeneratorFactory

Constructor Summary

Constructors

Constructor and Description
MergeRewriter(Hive db, HiveConf conf, SqlGeneratorFactory sqlGeneratorFactory)

Method Summary

Modifier and Type	Method and Description
protected MergeRewriter.MergeWhenClauseSqlGenerator	createMergeSqlGenerator(MergeStatement mergeStatement, MultiInsertSqlGenerator sqlGenerator)
ParseUtils.ReparseResult	rewrite(Context ctx, MergeStatement mergeStatement)
protected void	setOperation(Context context)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.hive.ql.parse.rewrite.MergeStatement.DestClausePrefixSetter

addDestNamePrefixOfDelete, addDestNamePrefixOfInsert, addDestNamePrefixOfUpdate

Field Detail

conf

protected final HiveConf conf

sqlGeneratorFactory

protected final SqlGeneratorFactory sqlGeneratorFactory

Constructor Detail

MergeRewriter

public MergeRewriter(Hive db,
                     HiveConf conf,
                     SqlGeneratorFactory sqlGeneratorFactory)

Method Detail

rewrite

public ParseUtils.ReparseResult rewrite(Context ctx,
                                        MergeStatement mergeStatement)
                                 throws SemanticException

Specified by:

rewrite in interface Rewriter<MergeStatement>

Throws:

SemanticException

createMergeSqlGenerator

protected MergeRewriter.MergeWhenClauseSqlGenerator createMergeSqlGenerator(MergeStatement mergeStatement,
                                                                            MultiInsertSqlGenerator sqlGenerator)

setOperation

protected void setOperation(Context context)