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

Class MergeRewriter.MergeWhenClauseSqlGenerator

java.lang.Object

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

All Implemented Interfaces:

MergeStatement.MergeSqlGenerator

Enclosing class:

MergeRewriter

protected static class MergeRewriter.MergeWhenClauseSqlGenerator
extends Object
implements MergeStatement.MergeSqlGenerator

Field Summary

Fields

Modifier and Type	Field and Description
protected HiveConf	conf
protected String	hintStr
protected MergeStatement	mergeStatement
protected MultiInsertSqlGenerator	sqlGenerator

Method Summary

Modifier and Type	Method and Description
protected void	addValues(Table targetTable, String targetAlias, Map<String,String> newValues, List<String> values)
protected void	addWhereClauseOfUpdate(String onClauseAsString, String extraPredicate, String deleteExtraPredicate, MultiInsertSqlGenerator sqlGenerator)
protected void	addWhereClauseOfUpdate(String onClauseAsString, String extraPredicate, String deleteExtraPredicate, MultiInsertSqlGenerator sqlGenerator, UnaryOperator<String> columnRefsFunc)
void	appendWhenMatchedDeleteClause(MergeStatement.DeleteClause deleteClause)
void	appendWhenMatchedUpdateClause(MergeStatement.UpdateClause updateClause)
void	appendWhenNotMatchedInsertClause(MergeStatement.InsertClause insertClause)
protected String	getRhsExpValue(String newValue, String alias)
protected void	handleWhenMatchedDelete(String onClauseAsString, String extraPredicate, String updateExtraPredicate, String hintStr, MultiInsertSqlGenerator sqlGenerator)

Methods inherited from class java.lang.Object

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

Field Detail

conf

protected final HiveConf conf

sqlGenerator

protected final MultiInsertSqlGenerator sqlGenerator

mergeStatement

protected final MergeStatement mergeStatement

hintStr

protected String hintStr

Method Detail

appendWhenNotMatchedInsertClause

public void appendWhenNotMatchedInsertClause(MergeStatement.InsertClause insertClause)

Specified by:

appendWhenNotMatchedInsertClause in interface MergeStatement.MergeSqlGenerator

appendWhenMatchedUpdateClause

public void appendWhenMatchedUpdateClause(MergeStatement.UpdateClause updateClause)

Specified by:

appendWhenMatchedUpdateClause in interface MergeStatement.MergeSqlGenerator

addValues

protected void addValues(Table targetTable,
                         String targetAlias,
                         Map<String,String> newValues,
                         List<String> values)

getRhsExpValue

protected String getRhsExpValue(String newValue,
                                String alias)

addWhereClauseOfUpdate

protected void addWhereClauseOfUpdate(String onClauseAsString,
                                      String extraPredicate,
                                      String deleteExtraPredicate,
                                      MultiInsertSqlGenerator sqlGenerator)

addWhereClauseOfUpdate

protected void addWhereClauseOfUpdate(String onClauseAsString,
                                      String extraPredicate,
                                      String deleteExtraPredicate,
                                      MultiInsertSqlGenerator sqlGenerator,
                                      UnaryOperator<String> columnRefsFunc)

appendWhenMatchedDeleteClause

public void appendWhenMatchedDeleteClause(MergeStatement.DeleteClause deleteClause)

Specified by:

appendWhenMatchedDeleteClause in interface MergeStatement.MergeSqlGenerator

handleWhenMatchedDelete

protected void handleWhenMatchedDelete(String onClauseAsString,
                                       String extraPredicate,
                                       String updateExtraPredicate,
                                       String hintStr,
                                       MultiInsertSqlGenerator sqlGenerator)