Collaboration diagram for com.cloudera.impala.analysis.SelectListItem:

Public Member Functions
	SelectListItem (Expr expr, String alias)

Expr	getExpr ()

boolean	isStar ()

String	getAlias ()

void	setAlias (String alias)

List< String >	getRawPath ()

String	toString ()

String	toSql ()

String	toColumnLabel (int selectListPos, boolean useHiveColLabels)

SelectListItem	clone ()

Static Public Member Functions
static SelectListItem	createStarItem (List< String > rawPath)

Private Member Functions
	SelectListItem (List< String > path)

Private Attributes
final Expr	expr_

String	alias_

final List< String >	rawPath_

final boolean	isStar_

Detailed Description

Definition at line 22 of file SelectListItem.java.

Constructor & Destructor Documentation

com.cloudera.impala.analysis.SelectListItem.SelectListItem	(	Expr	expr,
		String	alias
	)

inline

Definition at line 30 of file SelectListItem.java.

References com.cloudera.impala.analysis.SelectListItem.alias_, com.cloudera.impala.analysis.SelectListItem.expr_, com.cloudera.impala.analysis.SelectListItem.isStar_, and com.cloudera.impala.analysis.SelectListItem.rawPath_.

Referenced by com.cloudera.impala.analysis.SelectListItem.clone(), and com.cloudera.impala.analysis.SelectListItem.createStarItem().

com.cloudera.impala.analysis.SelectListItem.SelectListItem ( List< String > path )

inlineprivate

Definition at line 44 of file SelectListItem.java.

References com.cloudera.impala.analysis.SelectListItem.expr_, com.cloudera.impala.analysis.SelectListItem.isStar_, path(), and com.cloudera.impala.analysis.SelectListItem.rawPath_.

Member Function Documentation

SelectListItem com.cloudera.impala.analysis.SelectListItem.clone ( )

inline

Definition at line 121 of file SelectListItem.java.

References com.cloudera.impala.analysis.SelectListItem.alias_, com.cloudera.impala.analysis.Expr.clone(), com.cloudera.impala.analysis.SelectListItem.createStarItem(), com.cloudera.impala.analysis.SelectListItem.expr_, com.cloudera.impala.analysis.SelectListItem.isStar_, com.cloudera.impala.analysis.SelectListItem.rawPath_, and com.cloudera.impala.analysis.SelectListItem.SelectListItem().

static SelectListItem com.cloudera.impala.analysis.SelectListItem.createStarItem ( List< String > rawPath )

inlinestatic

Definition at line 40 of file SelectListItem.java.

References com.cloudera.impala.analysis.SelectListItem.SelectListItem().

Referenced by com.cloudera.impala.analysis.SelectListItem.clone().

String com.cloudera.impala.analysis.SelectListItem.getAlias ( )

inline

Definition at line 53 of file SelectListItem.java.

References com.cloudera.impala.analysis.SelectListItem.alias_.

Expr com.cloudera.impala.analysis.SelectListItem.getExpr ( )

inline

Definition at line 51 of file SelectListItem.java.

References com.cloudera.impala.analysis.SelectListItem.expr_.

Referenced by com.cloudera.impala.analysis.SelectStmt.analyze(), and com.cloudera.impala.analysis.StmtRewriter.createJoinConjunct().

List<String> com.cloudera.impala.analysis.SelectListItem.getRawPath ( )

inline

Definition at line 55 of file SelectListItem.java.

References com.cloudera.impala.analysis.SelectListItem.rawPath_.

Referenced by com.cloudera.impala.analysis.SelectStmt.analyze().

boolean com.cloudera.impala.analysis.SelectListItem.isStar ( )

inline

Definition at line 52 of file SelectListItem.java.

References com.cloudera.impala.analysis.SelectListItem.isStar_.

Referenced by com.cloudera.impala.analysis.SelectStmt.analyze(), and com.cloudera.impala.analysis.StmtRewriter.replaceUnqualifiedStarItems().

void com.cloudera.impala.analysis.SelectListItem.setAlias ( String alias )

inline

Definition at line 54 of file SelectListItem.java.

References com.cloudera.impala.analysis.SelectListItem.alias_.

String com.cloudera.impala.analysis.SelectListItem.toColumnLabel	(	int	selectListPos,
		boolean	useHiveColLabels
	)

inline

Returns a column label for this select list item. If an alias was given, then the column label is the lower case alias. If expr is a SlotRef then directly use its lower case column name. Otherwise, the label is the lower case toSql() of expr or a Hive auto-generated column name (depending on useHiveColLabels). Hive's auto-generated column labels have a "_c" prefix and a select-list pos suffix, e.g., "_c0", "_c1", "_c2", etc.

Using auto-generated columns that are consistent with Hive is important for view compatibility between Impala and Hive.

Definition at line 104 of file SelectListItem.java.

References com.cloudera.impala.analysis.SelectListItem.alias_, com.cloudera.impala.analysis.SelectListItem.expr_, com.cloudera.impala.analysis.SlotRef.getResolvedPath(), and com.cloudera.impala.analysis.SelectListItem.toSql().

String com.cloudera.impala.analysis.SelectListItem.toSql ( )

inline

Definition at line 70 of file SelectListItem.java.

References com.cloudera.impala.analysis.SelectListItem.alias_, com.cloudera.impala.analysis.SelectListItem.expr_, com.cloudera.impala.analysis.SelectListItem.isStar_, and com.cloudera.impala.analysis.SelectListItem.rawPath_.

Referenced by com.cloudera.impala.analysis.SelectListItem.toColumnLabel().

String com.cloudera.impala.analysis.SelectListItem.toString ( )

inline

Definition at line 58 of file SelectListItem.java.

References com.cloudera.impala.analysis.SelectListItem.alias_, com.cloudera.impala.analysis.SelectListItem.expr_, com.cloudera.impala.analysis.SelectListItem.isStar_, and com.cloudera.impala.analysis.SelectListItem.rawPath_.